CLASS 246, RAILWAY SWITCHES AND SIGNALS |
1R | MISCELLANEOUS: |
This subclass is indented under the class definition. Systems and devices not otherwise classifiable. | |
1C | . Signals and indicators |
This subclass has no definition. | |
2R | TRAIN DISPATCHING: |
This subclass is indented under the class definition. Systems and devices specially adapted for the control of
train movements by train-orders or by their equivalents
transmitted from a central or directing station.
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3 | . Central signal control: |
This subclass is indented under subclass 2. Systems and devices in which the train-dispatcher
can set or control the operation of railway-traffic-controlling
devices from a distance.
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4 | .. Cab signal or train control: |
This subclass is indented under subclass 3. Systems having the signals given upon the engine cab or
car or having mechanism which is actuated to stop the train or to
control its motion.
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5 | .. Selective: |
This subclass is indented under subclass 3. Systems having means so that any one of a plurality of signals
may be independently set or controlled from a distance, the
number of line-wires used being less than the number of
signals controlled.
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6 | . Train-order cab signal or train control: |
This subclass is indented under subclass 2. Systems having devices placed upon the train to insure the
observance of train orders.
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7 | . Train telegraphy or telephony: |
This subclass is indented under subclass 2. Telegraphic or telephonic systems specially adapted for
communication between trains and the dispatcher or other stations.
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8 | .. Inductive: |
This subclass is indented under subclass 7. Systems in which an inductive relation is established between
the train and line, no physical connection being established.
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9 | .. Continuous contacts: |
This subclass is indented under subclass 7. Systems in which a current is transmitted to or from the
train by one or more continuous contacts with line conductors other
than the traction rails, which may or may not be sectionalized.
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10 | ... Traction rail return: |
This subclass is indented under subclass 9. Systems in which a single continuous contact is used, current
being returned by the traction rails.
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11 | .... Multiple contact: |
This subclass is indented under subclass 10. Systems in which two or more continuous contacts are used.
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12 | ... Instruments in series: |
This subclass is indented under subclass 9. Systems in which each train has its instruments cut constantly
into the line in series with those of other trains or stations.
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13 | .. Emergency signal stations: |
This subclass is indented under subclass 7. Emergency stations without operators, located along
the permanent way between regular stations, at which trains
may stop or be stopped for communication by telegraph or telephone with
the dispatcher or other trains or stations or from which in an emergency
signals may be controlled.
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14 | . Station, block, or train-order signals: |
This subclass is indented under subclass 2. Day or night signals or combinations of same used for the
purpose mentioned and usually adapted to be supported by or attached
to the roof or outer wall of a station or signal cabin and provided
with means for operating them from within the same.
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15 | .. Safety systems: |
This subclass is indented under subclass 14. Systems for insuring the proper display of the signal or
the due delivery of the train order.
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16 | ... Holders: |
This subclass is indented under subclass 15. Devices for holding the train order, or train order
blank, form part of the safety system.
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17 | .. Rotary, vertical axis: |
This subclass is indented under subclass 14. Signals which rotate upon a vertical axis.
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18 | .. Double semaphore: |
This subclass is indented under subclass 14. Signals having two semaphore-arms which extend
on opposite sides from a common support.
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2E | . Orientation |
This subclass has no definition. | |
2F | . Frequency |
This subclass has no definition. | |
2S | . Spacing |
This subclass has no definition. | |
19 | STAFF AND TABLET SYSTEMS: |
This subclass is indented under the class definition. Systems in which the physical possession by an officer of
the train of a train staff, ticket, tablet, or
other token is a prerequisite to entrance upon the section or block.
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20 | BLOCK-SIGNAL SYSTEMS: |
This subclass is indented under the class definition. Systems in which a space interval is maintained between
trains on the same track, usually by the subdivision of
the way into definite sections termed "blocks", the
movement of traffic being governed by cab or wayside signals or
devices which control the brakes or motive power, or both.
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21 | . Semi-automatic: |
This subclass is indented under subclass 20. Systems in which the train automatically cooperates with
human agency in the actuation or control of the elements of the
system.
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22 | .. Electromanual: |
This subclass is indented under subclass 21. Systems in which the train uses electrical means in performing
its automatic function.
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23 | ... Cab signal or train control: |
This subclass is indented under subclass 22. Systems in which means are provided for actuating audible
or visual signals upon the cab or train or for stopping it or controlling
its speed.
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24 | ... Circuit controllers: |
This subclass is indented under subclass 22. Systems in which use is made of train-actuated circuit
controllers.
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25 | ... Lock and block: |
This subclass is indented under subclass 22. Systems in which the signal clearing operations require
the cooperation of the operators at each end of the block and also
the absence of trains from the block, which when present, by
electrical means, render it impossible to clear the signals.
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26 | .... Track-circuit control: |
This subclass is indented under subclass 25. Systems in which track circuits are used for controlling
the devices of the system.
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27 | . Automatic: |
This subclass is indented under subclass 20. Systems having train-control devices which operate
automatically without direct human intervention.
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28R | .. Electric: |
This subclass is indented under subclass 27. Systems in which the traffic- controlling devices
are actuated and controlled only by electrical means.
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29R | ... Radiant energy: |
This subclass is indented under subclass 28. Systems in which the traffic- control devices are
actuated and controlled by waves of radiant energy as heat, light, etc.
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30 | .... Hertzian wave: |
This subclass is indented under subclass 29. Systems in which the signals or automatic-stop devices
are actuated or controlled by the methods of so-called "wireless
telegraphy", making use of Hertzian waves.
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29A | .... Electronic gaseous ionization devices |
This subclass has no definition. | |
31 | ... Propulsion-current control: |
This subclass is indented under subclass 28. Systems in which means not on the car or train are provided
whereby under conditions of danger the supply of propulsion current
is cut off or is so reduced that the car is stopped or its speed
controlled..
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32 | .... Current consumption: |
This subclass is indented under subclass 31. Systems in which the flow of propulsion current to one car or train under conditions of danger controls the flow to other cars or trains. | |
33 | ... Single track: |
This subclass is indented under subclass 28. Systems in which signals are so arranged as to give danger
or caution indications to trains running in both directions on the
same track.
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34R | ... Varying-current track circuit: |
This subclass is indented under subclass 28. Systems in which an alternating or pulsating current used
for actuating or controlling the traffic controlling devices and
derived from a source not on the train uses both traction rails as
conductors in series for the major portion of the block.
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35 | .... Propulsion-current return: |
This subclass is indented under subclass 34. Systems in which super-imposed propulsion current, either
direct or alternating, is returned through one of the traction
rails which is not sectionalized.
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36 | ..... Double rail: |
This subclass is indented under subclass 35. Systems in which both traction rails are used for the return
of the super-imposed propulsion current, neither
rail being sectionalized.
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37 | ...... Impedance bond: |
This subclass is indented under subclass 36. Systems in which one or both of the traction-rails
are divided into sections by insulated joints, the rails
being made continuous for the return of the super-imposed
direct propulsion-current by inductance-bonds
or similar devices, which by impedance prevent the passage
of the alternating signal-circuit.
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38 | .... Wireless distant control: |
This subclass is indented under subclass 34. Systems in which the home indication is actuated or controlled
by the presence or absence of current and the distant indication
by the change of some characteristic of the track-circuit
current.
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39 | .... Line-wire distant control: |
This subclass is indented under subclass 34. Systems in which one or more line-wires extending
back for at least the entire length of the block are used for controlling
or actuating the distant signal.
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40 | .... Single block: |
This subclass is indented under subclass 34. Systems in which the blocks are independent, trains
only controlling the devices at the entrance of the blocks in which
they are running.
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34A | .... Approach control |
This subclass has no definition. | |
34B | .... Coded circuits |
This subclass has no definition. | |
34C | .... Insulation breakdown |
This subclass has no definition. | |
34D | .... Saturable reactors |
This subclass has no definition. | |
34CT | .... Continuous track |
This subclass has no definition. | |
41 | ... Direct current, normally closed, track circuit: |
This subclass is indented under subclass 28. Systems in which a direct, normally closed, continuous
current, either actuating or controlling traffic-controlling
devices and derived from a source not on the train, uses
both traction-rails in series as conductors for the major portion
of the block.
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42 | .... Propulsion-current return: |
This subclass is indented under subclass 41. Systems in which a direct propulsion-current is returned
by and super-imposed upon one or both of the track-rails
in which the signal controlling current flows.
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43 | ..... Varying: |
This subclass is indented under subclass 42. Systems in which the super-imposed propulsion-current
is either alternating or pulsating.
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44 | .... Wireless distant control: |
This subclass is indented under subclass 41. Systems in which the distant signal is controlled by the
change of some characteristic of the track-circuit current.
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45 | ..... Current reversal: |
This subclass is indented under subclass 44. Systems in which a reversal of the direction of current
flow is used for controlling the distant signal.
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46 | .... Line-wire distant control: |
This subclass is indented under subclass 41. Systems in which one or more line wires extending back the
entire length of the block are used for controlling or actuating
the distant signal.
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47 | ..... Cab signal or train control: |
This subclass is indented under subclass 46. Systems in which means are provided for actuating traffic-controlling
devices placed upon the train or car.
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48 | ...... Bridged insulated rail joint: |
This subclass is indented under subclass 47. Systems in which an electric circuit on the train, normally
closed through the track-rails, is broken by the
passage of the train over one or more insulated rail-joints
when a condition of danger exists, the break in the rails
being electrically bridged under conditions of safety.
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49 | ...... Intermittent contact: |
This subclass is indented under subclass 47. Systems in which an electric current is transmitted from
the track into the cab or a local cab-circuit is closed
by means of so-called "ramp rails" or
intermittent contact plates or rails.
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50 | ..... Current characteristic: |
This subclass is indented under subclass 46. Systems in which the distant signal is actuated or controlled
by changes in the direction of current-flow or in some
other characteristic or the current in a circuit other than the
track-circuit.
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51 | ..... Overlapped blocks: |
This subclass is indented under subclass 46. Systems in which the signal at the entrance to any block
is retained in its danger position until after a train has entered
the next block ahead and has proceeded therein a certain predetermined
distance.
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52 | ..... Home and distant: |
This subclass is indented under subclass 46. Systems in which two signals, "home" and "distant" so
called, usually having a common support, are placed
at the entrance to each block and respectively indicate the condition
of the block about to be entered and or the next block ahead.
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53 | ..... Three position: |
This subclass is indented under subclass 46. Systems in which a so-called "three-position signal" is
placed at the entrance to each block and indicates by its three
different aspects the occupancy of the first or second blocks ahead or
that both blocks are clear.
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54 | .... Single block: |
This subclass is indented under subclass 41. Systems in which the blocks are independent, trains
only controlling the devices of the blocks in which they are running.
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55 | ..... Cab signal or train control: |
This subclass is indented under subclass 54. Systems in which the traffic-controlling devices
are placed upon the car or train.
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56 | ...... Intermittent contact: |
This subclass is indented under subclass 55. Systems in which intermittent contacts or so-called "ramp-rails" are
used for establishing electrical connection with the moving train.
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57 | ...... Bridged insulated rail joint: |
This subclass is indented under subclass 55. Systems in which an electric circuit upon the train, normally
closed through the track rail or rails, is broken by the
passage of the car over one or move insulated rail-joints, the
break in the rails being electrically closed under conditions of
safety.
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58 | ... Direct-current, normally open, track circuit: |
This subclass is indented under subclass 28. Systems in which a direct continuous current used for actuating
and controlling traffic-controlling devices, normally
open and derived from a source not on the train, uses both
traction-rails in series as conductors in opposite directions
for the major portion of the block.
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59 | .... Cab signal or train control: |
This subclass is indented under subclass 58. Means are provided for actuating audible or visual signals
upon the cab or train or for stopping it or controlling its speed.
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60 | .... Distant-signal control: |
This subclass is indented under subclass 58. Means are provided for the control of distant or three-position
signals or for the control of a single signal from a plurality of
blocks.
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61 | ... Superimposed propulsion current: |
This subclass is indented under subclass 28. Propulsion-current is superimposed upon the current
controlling the signals.
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62 | ... Cab signal or train control: |
This subclass is indented under subclass 28. Systems in which means are provided for actuating traffic-control
devices upon the cab or train.
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63R | .... Inductive: |
This subclass is indented under subclass 62. Systems in which an inductive relation is established between
the train and the line, no physical connection being maintained
between them.
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63C | ..... Continuous |
This subclass has no definition. | |
63A | ..... Intermittent |
This subclass has no definition. | |
64 | .... Train-carried current supply: |
This subclass is indented under subclass 62. Systems in which the source of current is a battery or dynamo
placed upon the train.
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65 | ..... Multiple continuous contacts: |
This subclass is indented under subclass 64. Systems in which continuous contacts are maintained by shoes, brushes, and
their equivalents between two or more metallic conductors extending
parallel to the track. The traction-rails may
or may not form part of the circuit.
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66 | ...... Sectional: |
This subclass is indented under subclass 65. Systems in which the continuous-contact rails, the
traction-rails, or both, are divided
into sections or blocks insulated from each other.
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67 | ..... Single continuous contact: |
This subclass is indented under subclass 64. Systems in which a single continuous contact is maintained
by shoes, brushes, or other equivalents between
the moving vehicle and a metallic conductor extending parallel with
the track.
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68 | ...... Sectional: |
This subclass is indented under subclass 67. Systems in which the conductor, the traction-rails, or
both, are divided into sections or blocks insulated from
each other.
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69 | ..... Intermittent contact: |
This subclass is indented under subclass 64. Systems in which the train-current passes out by
or returns through the medium of one or more intermittent contacts
or "ramp-rails", so-called.
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70 | ...... Rail circuit: |
This subclass is indented under subclass 69. Systems in which the traction-rails form part of the
circuit, the current passing through them in both directions.
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71 | ...... Rail return: |
This subclass is indented under subclass 69. Systems in which the traction-rails form part of the
circuit, the current passing through them in one direction
only.
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72 | .... Propulsion-current signaling: |
This subclass is indented under subclass 62. Systems in which the electrical energy is derived from the
propulsion-current.
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73 | .... Continuous contact: |
This subclass is indented under subclass 62. Systems in which the current is conducted from the track
through the cab or car by means of a continuous contact maintained
with one or more line conductors, not traction-rails, for
the major portion of the block.
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74 | .... Intermittent contact: |
This subclass is indented under subclass 62. Systems in which the current is conducted from the track
through the cab or car by means of intermittent contacts, periodically
established, with contact-plates, ramp-rails, or
similar devices other than traction-rails.
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75 | .... Bridged insulated rail joint: |
This subclass is indented under subclass 62. Systems in which an electrical circuit upon the train, normally
closed through the track rail or rails, is broken by the
passage of the car over one or more insulated rail-joints, the
break in the rails being electrically closed under conditions of
safety.
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76 | .... Track trip: |
This subclass is indented under subclass 62. Systems includes electrically-actuated track-detents
or obstacles mechanically actuate mechanism on moving trains, such
as brake-valves, levers, circuit-closers, etc.
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77 | ... Counting in and out: |
This subclass is indented under subclass 28. Counting and cancelling mechanism, usually of the
step-by-step variety, is provided, whereby
as many trains or car-wheels as enter must leave the block
before the signal can be restored to safety.
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78 | .... Ratchet wheel: |
This subclass is indented under subclass 77. Subject matter having ratchet-wheels which are actuated
and controlled by pawls or escapements.
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79 | ..... Double opposed pawls: |
This subclass is indented under subclass 78. Subject matter having a single ratchet-wheel which
is actuated by two opposed pawls moving in the same plane and tending
to turn it in opposite directions.
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80 | ...... Parallel teeth: |
This subclass is indented under subclass 79. Subject matter having two ratchet-wheels which
are placed in parallel on the same arbor or a single wheel having
two sets of teeth in parallel is actuated by opposed pawls to produce
rotation in opposite directions.
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81 | ... Propulsion-current signaling: |
This subclass is indented under subclass 28. Subject matter having the propulsion-current used
to actuate or control the signals of the block.
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82 | .... Rotary controller: |
This subclass is indented under subclass 81. Subject matter having one or more circuit-controllers
continuously rotated in one direction, which are actuated
either electrically or mechanically, but which do not perform
a counting and canceling function.
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83 | .... Car-actuated controller: |
This subclass is indented under subclass 81. Subject matter in which circuit-controllers are provided
which are mechanically actuated by the moving car.
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84 | ..... Trolley or plow: |
This subclass is indented under subclass 83. Subject matter having circuit-controllers actuated
by the trolley-arm plow or other current-collector.
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85 | .... Intermittent contact: |
This subclass is indented under subclass 81. Subject matter having traffic-controlling devices
actuated or controlled by circuits closed through intermittent contacts
established between the moving vehicle and stationary conductors.
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86 | ... Train-carried current supply: |
This subclass is indented under subclass 28. Systems in which the source of the current is carried upon
the train.
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87 | ... Line-current supply: |
This subclass is indented under subclass 28. Systems in which the source of the current is not carried on the train. | |
88 | .... Intermediate signal: |
This subclass is indented under subclass 87. Systems in which a plurality of signals, usually electric
lamps, are displayed within the block.
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89 | .... Short sectional rail closure: |
This subclass is indented under subclass 87. Systems in which the circuit for actuating or controlling
the signals is opened of closed by car-wheels bridging
two short parallel insulated track-sections.
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90 | .... Car-actuated controller: |
This subclass is indented under subclass 87. Systems in which the circuit for actuating or controlling
the signals is opened or closed by controllers actuated by the energy
of the moving train.
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91 | ..... Relay: |
This subclass is indented under subclass 90. Systems in which the car-actuated controllers governs the action of one or more controllers of other circuits, which perform the function of a relay. | |
92 | .... Intermittent contact: |
This subclass is indented under subclass 87. Systems in which the circuit is closed by devices carried
by the train, which make electrical connection with short
rails, contact-plates, etc.
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28C | ... Ballast leakage |
This subclass has no definition. | |
28E | ... Economy use of line wire |
This subclass has no definition. | |
28F | ... Checking circuits |
This subclass has no definition. | |
28G | ... Light-out |
This subclass has no definition. | |
28H | ... Intermittent light |
This subclass has no definition. | |
28K | ... Transformer |
This subclass has no definition. | |
93 | .. Combined fluid pessure and electric: |
This subclass is indented under subclass 27. Subject matter having electrical and fluid-pressure
means used in combination for the actuation and control of roadway-signals, track-detents, contacts, and
similar devices, irrespective of the means employed upon
the train for actuating the cab and control mechanism.
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94 | ... Cab signal or train control: |
This subclass is indented under subclass 93. Subject matter in which means are provided for actuating
signals upon the train or for stopping it or controlling its speed.
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95 | ... Track-circuit control: |
This subclass is indented under subclass 93. Systems which are controlled through track-circuits.
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96 | .. Electromechanical: |
This subclass is indented under subclass 27. Subject matter having electrical and mechanical means used
in combination for the actuation and control of roadway-signals, detents, and
other track devices, irrespective of any means employed
upon the train for actuating cab and control mechanism.
The mechanical means may or may not utilize the energy of the moving
vehicle.
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97 | ... Cab signal or train control: |
This subclass is indented under subclass 96. Subject matter having means provided for actuating audible
or visible signals upon the car or train or for stopping it or controlling
its speed.
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98 | ... Track-circuit control: |
This subclass is indented under subclass 96. Subject matter having track circuits to control the traffic-controlling
devices.
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99 | ... Clockwork: |
This subclass is indented under subclass 96. Subject matter having clockwork or similar trains of gearing
which are made use of and are provided with electrically-actuated
escapement or latch-release devices.
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100 | .. Fluid pressure: |
This subclass is indented under subclass 27. Subject matter having fluid-pressure means used
for actuating and controlling roadway-signals, detents, and
other track devices, irrespective of the means employed
upon the train for actuating the cab and control mechanism.
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101 | ... Cab signal or train control: |
This subclass is indented under subclass 100. Subject matter having means provided for actuating audible
or visible signals upon the cab or train or for stopping it or controlling
its speed.
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102 | .. Mechanical: |
This subclass is indented under subclass 27. Subject matter having roadway-signals, detents, and
other track devices actuated and controlled solely by mechanical
means, usually involving direct contact with the moving
train or some device attached thereto, and irrespective
of the means employed upon the train, if any, for
actuating the cab and control mechanism.
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103 | ... Cab signal or train control: |
This subclass is indented under subclass 102. Subject matter having means provided for actuating audible
or visible signals upon the cab or train or for stopping it or controlling
its speed.
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104 | . Manual: |
This subclass is indented under subclass 20. Subject matter having traffic-controlling devices
actuated either by manual power or by manually-controlled
power mechanism.
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105 | .. Electric: |
This subclass is indented under subclass 104. Subject matter having signals either actuated or controlled
by electric means or having electricity used for performing some
function other than transmitting telephonic or code messages to
the signalmen.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
106 | ... Lock and block: |
This subclass is indented under subclass 105. Subject matter having a signal which cannot be cleared at
one end of the block until it has been electrically unlocked by
the operator at the other end.
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| |||||
107 | . Recorders: |
Subject matter under subclasss 20 having devices which are
used for permanently recording the movements of trains, signals, or
other movable units or indicating the disregard of signals.
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108 | TIME INDICATION, AUTOMATIC: |
This subclass is indented under the class definition. Systems and devices which include means for giving a time
indication concerning trains which have previously passed.
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109 | . Flow retarded: |
This subclass is indented under subclass 108. Systems and devices in which the retarded flow of gases, liquids, or finely-divided particles of solids is utilized for giving the time indication. | |
110 | . Time limit expired: |
This subclass is indented under subclass 108. Systems and devices in which a visual indicator set by the
last train which passed is suddenly obscured or reset at the expiration
of a predetermined time-limit.
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| |||
111 | GRADE-CROSSING TRACK PROTECTION: |
This subclass is indented under the class definition. Systems and devices which include any arrangement of train-controlling
means--such as signals, derails, interlocking, automatic stops, etc., --designed
to prevent collisions where two or more lines of railway cross at grade.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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112 | . Semi-automatic: |
This subclass is indented under subclass 111. Subject matter in which the train automatically cooperates
with human agency in the actuation or control of the traffic devices.
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113 | . Automatic: |
This subclass is indented under subclass 111. Subject matter having means actuated or controlled automatically
by the approaching train and without the intervention of human agency.
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114R | .. Electric: |
This subclass is indented under subclass 113. Subject matter having electric means for the actuation or
control of the traffic-controlling devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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115 | ... Cab signal or train control: |
This subclass is indented under subclass 114. Subject matter having means provided for giving indications
upon the train or for stopping it or controlling its speed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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114A | ... Cross-over protection |
This subclass has no definition. | |
116 | .. Fluid pressure: |
This subclass is indented under subclass 113. Subject matter having fluid-pressure means for the
actuation or control of the signals.
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| |||||
117 | . Cab signal or train control: |
This subclass is indented under subclass 111. Subject matter having means provided for actuating audible
or visual signals upon the cab or train or for stopping it or controlling
its speed.
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118 | DRAWBRIDGE PROTECTION: |
This subclass is indented under the class definition. System of train-controlling means designed to prevent
trains and cars from running into an open drawbridge.
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119 | . Cab signal or train control: |
This subclass is indented under subclass 118. Subject matter having means provided for actuating signals
on approaching trains or for stopping them or controlling their
motion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
120 | ROADWAY-DEFECT PROTECTION: |
This subclass is indented under the class definition. Subject matter having signals, indicators, and
train-controlling devices which are automatically set at "danger" by
the occurrence of any defect in the permanent way, including bridges.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
121 | . Electric: |
This subclass is indented under subclass 120. Subject matter having roadway-defect signals which
are actuated or controlled by electrical means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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122R | TRAIN-POSITION INDICATION: |
This subclass is indented under the class definition. Systems and devices in which the train automatically indicates
its position upon the line as by lights, indicators, moving
diagrams, etc.
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123 | . Automatic time recording: |
This subclass is indented under subclass 122. Systems in which a permanent record is automatically made
at a distant station of the time at which a train passes a given
point.
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124 | . Train annunciators or indicators: |
This subclass is indented under subclass 122. Systems in which an audible or visual indication is given, usually
in a tower or station, of the approach of a train, and
in some cases also of its number, its intended route, or
other necessary information.
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| |||
122A | . Miniature model |
This subclass has no definition. | |
125 | ELECTRIC AUTOMATIC HIGHWAY SIGNALS, MINE DOORS, AND GATES: |
This subclass is indented under the class definition. Systems in which highway-crossing signals, gates, and
mine-doors are actuated or controlled from the moving train
or vehicle by electrical means.
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126 | . Car-actuated controller: |
This subclass is indented under subclass 125. Subject matter having car-actuated circuit-controllers
located on the right of way.
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127 | .. Gates and doors: |
This subclass is indented under subclass 126. Subject matter where the actuated devices are either crossing-gates, mine-doors, or
curtains.
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128 | . Normally open track circuit: |
This subclass is indented under subclass 125. Subject matter where the primary or controlling track-circuit
is normally open.
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129 | .. Short sectional rail closure: |
This subclass is indented under subclass 128. Subject matter where an open circuit is closed by the car-wheels
bridging two short parallel insulated sections of the traction-rails.
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130 | . Normally closed track circuit: |
This subclass is indented under subclass 125. Subject matter where the controlling track-circuit
is normally closed.
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131 | INTERLOCKING: |
This subclass is indented under the class definition. Subject matter having means for actuating switches, signals, locks, derails, and
similar independently-movable units of this class in such
manner as to insure predetermined sequences of operation so far
as they may be needed to restrain the movement of all other devices
which, if actuated, would give rise to a condition
of danger.
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132 | . Electric actuation: |
This subclass is indented under subclass 131. Subject matter where electrical means are provided for actuating
the movable units.
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133 | .. Electric locking: |
This subclass is indented under subclass 132. Subject matter having electrical means provided for actuating
the locks.
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134 | ... Route locking: |
This subclass is indented under subclass 133. Subject matter in which a definite route or itinerary is
set up through a system of tracks by a smaller number of actuating
levers or devices than would usually be required.
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135 | ... Return-release indication: |
This subclass is indented under subclass 133. Subject matter in which the actuating lever or device is
prevented by electric locks from completing its movement, and
from thereby releasing the other devices which it controls, until
the actuated unit is in full normal or reversed position, whereupon
a return-release-indication current is sent back, unlocking
the actuating-lever and either effecting or permitting
the completion of its movement.
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| |||||
136 | .. Mechanical locking: |
This subclass is indented under subclass 132. Subject matter in which the locking is effected by mechanical
connections between the actuating levers or devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
137 | ... Return-release indication: |
This subclass is indented under subclass 136. Subject matter in which the actuating lever or device is
prevented by electric locks from completing its movement, and
from thereby unlocking the other devices which it controls, until
the actuated unit is in full normal or reverse position, whereupon
a return-release-indication current is sent back, unlocking
the actuating-lever and permitting or effecting the completion
of its movement.
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| |||||
138 | .... Locked slide: |
This subclass is indented under subclass 137. Subject matter in which the release-locking is applied
to sliding members which actuate the circuit-closers.
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139 | . Fluid-pressure actuation: |
This subclass is indented under subclass 131. Subject matter in which fluid-pressure means are
used for actuating the movable units.
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140 | .. Electrically controlled valve: |
This subclass is indented under subclass 139. Subject matter in which the units are actuated by electrically-controlled
fluid-pressure means.
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141 | ... Return-release indication: |
This subclass is indented under subclass 140. Subject matter in which the actuating lever or device is
prevented by electric locks from completing its movement and thereby
unlocking the other device which it controls, until the actuated
unit is in full normal or reverse position, whereupon a
return-release-indication current is sent back, unlocking
the actuating-lever and permitting or effecting the completion
of its movement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
142 | .. Return-release indication: |
This subclass is indented under subclass 139. Subject matter in which the actuating lever or device is
prevented by electric locks from completing its movement, and
from thereby unlocking the other devices which it controls, until
the actuated unit is in full normal or reversed position, whereupon
a return-release indication current is sent back, unlocking
the actuating-lever and permitting or effecting the completion
of its movement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
143 | . Manual actuation: |
This subclass is indented under subclass 131. Subject matter in which units are actuated by manual power
transmitted from the signal-cabin by rods or cables.
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This subclass has no definition. | |
144 | ... Signal-actuating: |
This subclass is indented under subclass 131. Subject matter having switch-stands where the signal
and switch do not move simultaneously, but independently, in
a prearranged sequence of operation.
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145 | .... Double lever: |
This subclass is indented under subclass 144. Subject matter in which the switch stands are provided with
separate levers for the switch and the target or signal.
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146 | .. Electrical locking: |
This subclass is indented under subclass 143. Subject matter in which the locking mechanism is effected
by electrical means.
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| |||
147 | .. Mechanical locking: |
This subclass is indented under subclass 143. Subject matter in which the locking mechanism is effected
by mechanical connections between the operating levers.
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148 | ... Preliminary: |
This subclass is indented under subclass 147. Subject matter in which the actuation of the quandrant-latch
or its equivalent completely actuates the locking mechanism before
the lever can begin its movement.
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149 | .... Tappets: |
This subclass is indented under subclass 148. Subject matter in which a parallel system of tappet-rods, each
directly connected to an operating-lever, cooperates
with tappets in actuating a parallel system of locking-rods
moving at right angles thereto.
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| |||
150 | ... Tappets: |
This subclass is indented under subclass 147. Subject matter having locking and unlocking mechanism in
which the locking and unlocking is performed by the motion of the
lever itself instead of by the motion of its latch, a system of
parallel tappet-rods cooperating, through tappets, with
a system of parallel locking-rods moving at right angles
thereto.
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| |||
151 | ... Detector bars: |
This subclass is indented under subclass 147. Subject matter having devices by which any attempt to unlock
and shift a switch, signal, or other movable unit
of an interlocking plant is restrained by the contact, with
one or more wheels of a passing car, of a movable bar longer
than the greatest distance between such wheels.
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152 | ... Compensators: |
This subclass is indented under subclass 147. Subject matter having devices for compensating for the expansion
and contraction of wires, rods and similar connections
used between signals, switches, etc., and
their operating means.
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153 | .... Counterweight: |
This subclass is indented under subclass 152. Subject matter having compensators in which the slack is taken up by means of one or more counterweights. | |
154 | ..... Intermittent grip: |
This subclass is indented under subclass 153. Subject matter having counterweight-compensators
in which the actuating-lever is normally detached from
the connecting cable or rod and connected therewith by grip devices
only during the period of actuation.
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155 | ... Rod-saving devices: |
This subclass is indented under subclass 147. Subject matter having devices used in the mechanical actuation of switches and signals, whereby the functions of several connecting-rods are performed by a smaller number of rods. | |
156 | .... Selectors: |
This subclass is indented under subclass 155. Subject matter having devices for connecting single operating-levers, wheels, etc., with
any one of two or more rods, cables, or operating devices
used for actuating switches, signals, derailing-blocks, and
other movable units of the class.
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| |||||
157 | ..... Electric: |
This subclass is indented under subclass 156. Subject matter actuated or controlled by electrical means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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158 | .... Switch and lock movements: |
This subclass is indented under subclass 155. Subject matter having rod-saving devices whereby
the movement of one lever both actuates the switch and also either
locks it, indicates or detects its motion, shifts
a detector or locking bar, or performs both of these additional
functions.
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159 | . Detached locking, check locking, or key control: |
This subclass is indented under subclass 131. Subject matter having mechanism spatially separated from
but interlocked with the mechanism of the central tower and usually
located near switches and signals, whereby they can be shifted
by others than the tower operator, provided the conditions
are safe for such movement, in which case the full protection
of the entire interlocking system is afforded until the switches
and signals are properly replaced.
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160 | . Approach locking: |
This subclass is indented under subclass 131. Systems, mostly electric, wherein upon
the approach of a train to the switch or signal the switches, signals, or
other movable elements are automatically locked in position.
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161 | . Retarded-release mechanism: |
This subclass is indented under subclass 131. Subject matter having mechanism for preventing the reversal
of a switch or signal movement until after the lapse of a definite
interval of time.
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162 | . Switch or signal indicators: |
This subclass is indented under subclass 131. Subject matter having devices for indicating the position
or motion of a distant switch, signal, or similar
movable element.
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163 | . Derails: |
This subclass is indented under subclass 131. Blocks or similar movable devices which can be placed upon
or near the track for derailing such trains as disregard a signal.
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164 | SLOTTING AND CONTROL: |
This subclass is indented under the class definition. Subject matter including devices which require the cooperation
of two or more operators or moving elements for effecting a movement,
as in clearing a signal, while any one of them can independently
effect the reverse movement, as setting it to "danger".
Includes "replacers" and "reversers",
so-called, and coupling devices for disconnecting signals, switches,
etc., from their operating means.
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| |||
165 | . Electric: |
This subclass is indented under subclass 164. Subject matter which is electrically controlled in whole or in part. | |
166 | PILOT OR SIGNAL CARS: |
This subclass is indented under the class definition. Subject matter having pilot-cars and compression buffers
in front of a train or car or designed to run ahead or behind the
train and provided with means for operating signals upon the train,
stopping it, controlling its motion, or signaling danger to other
approaching cars or trains.
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166.1 | SIGNALLING BETWEEN OCCUPANTS OF A TRAIN: |
This subclass is indented under the class definition. Subject matter including systems which permit a conductor,
or other occupant, of a car or train to signal or communicate with
the engineer, or another occupant, along the car or train.
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167R | CAB SIGNAL OR TRAIN CONTROL: |
This subclass is indented under the class definition. Subject matter for the automatic actuation of signals and
changeable exhibitors upon the cab or train or for stopping it or
controlling its speed, usually by cooperation with means not on
the train, but not disclosing a complete block system.
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168 | . Train parting: |
This subclass is indented under subclass 167. Subject matter designed for avoiding accidents by the use
of automatic train-signals or train control when trains part through
the breaking or uncoupling of the couplers.
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168.1 | . Wheel slip: |
This subclass is indented under subclass 167. Subject matter including means for generating a cab. | |
169R | . Train defect: |
This subclass is indented under subclass 167. Subject matter having means automatically actuated by defects
in or breakage of parts of the rolling-stock or by improper adjustment
of appliances, which are liable to cause disaster, such as broken
wheel-flanges, fallen brake-beams, defects in running-gear and brake
systems, improper coupling of air-brake pipes, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
169A | .. Hot bearing detectors |
This subclass has no definition. | |
169D | .. Radiant energy type |
This subclass has no definition. | |
169S | .. Sound detectors |
This subclass has no definition. | |
170 | . Derailment: |
This subclass is indented under subclass 167. Subject matter having means actuated by the derailment of
one or more wheels of the train.
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171 | .. Contact trips: |
This subclass is indented under subclass 170. Subject matter having a trip which on derailment comes into
contact with the road-bed or traction-rail.
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172 | ... Frangible: |
This subclass is indented under subclass 171. Subject matter having a frangible closure for the train-pipe
of an airbrake system, broken upon derailment or other condition
of danger, usually by contact with the roadway, whereby the brakes
are automatically applied.
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| |||||
173 | .. Inertia trips: |
This subclass is indented under subclass 170. Subject matter where the control is effected by the inertia
of the trip, as when the vehicle is severely jolted.
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174 | . Highway or station, automatic: |
This subclass is indented under subclass 167. Subject matter having a signal, bell or whistle, which is
automatically sounded upon the train as it approaches the high-way-crossing,
station, tunnel, curve, or other place for which a signal should
be given.
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175 | .. Code signal: |
This subclass is indented under subclass 174. Subject matter, the signal consists of a succession of long
and short whistle-blasts or their equivalent, resembling a letter
of the Morse telegraphic code.
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176 | . Switch signals: |
This subclass is indented under subclass 167. Subject matter having switches provided with means whereby
signals are given upon the approaching train or the train is stopped
or its speed controlled when the switch is in a dangerous position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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177 | . Block entrance initiated: |
This subclass is indented under subclass 167. Subject matter where the actuation of the cab signal or
train-control devices is automatically prevented under prearranged
conditions, for the most part those of safety, having been previously
initiated by automatic means.
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178 | .. Electric or magnetic control: |
This subclass is indented under subclass 177. Subject matter where the control devices are of an electric
or magnetic nature.
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179 | ... Bridged insulated rail joint: |
This subclass is indented under subclass 178. Subject matter having control devices whose actuation is
initiated by an electric circuit on the train normally closed through
the track-rails and which is broken by the passage of the train
over one or more insulated rail-joints placed at the point of initiation
and which are electrically bridged or connected when the cab signal
or train-control mechanism is not to be actuated.
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180 | ... Cab-circuit controller: |
This subclass is indented under subclass 178. Subject matter having control devices whose actuation is
initiated by breaking a normally closed circuit placed on the train,
which contains a circuit-controller actuated by contact with track-trips
at the point of initiation.
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| |||||
181 | ... Mechanical actuation: |
This subclass is indented under subclass 178. Subject matter having control devices whose actuation is
initiated by mechanical means, such as track-trips directly or indirectly
acting upon the cab-signals and train-control devices.
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| |||
182R | . Speed-control systems: |
This subclass is indented under subclass 167. Subject matter having speed-control means which is inoperative
below but operative above predetermined speeds when predetermined points
are reached.
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182A | .. Track brake speed control |
This subclass has no definition. | |
182B | .. Automatic vehicle-carried braking |
This subclass has no definition. | |
182BH | .. Humped, unpowered cars |
This subclass has no definition. | |
182C | .. Automatic vehicle-carried speed comparison circuits |
This subclass has no definition. | |
182AA | .. Yard-switching, dispersed |
This subclass has no definition. | |
182AB | .. Yard-switching, centralized |
This subclass has no definition. | |
183 | . Manual-control systems: |
This subclass is indented under subclass 167. Systems in which the engineer or motorman can pass the track
device without receiving the signal or having his train stopped
or its speed reduced, by manually preventing the train mechanism
from cooperating with the track device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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184 | . Serivce stop: |
This subclass is indented under subclass 167. Subject matter in which a "service-stop" so called,
is made, as distinguished from an emergency-stop, the brakes being
applied gradually and not suddenly.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
185 | . Recording devices: |
This subclass is indented under subclass 167. Subject matter having recording devices to be used in connection
with cab signal and train-control mechanism for making a record
in case an employee disregards the signals.
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186 | . Motive-power control: |
This subclass is indented under subclass 167. Subject matter having means placed upon the train for controlling
the motive power used for propelling the train or vehicle.
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187R | .. Electric: |
This subclass is indented under subclass 186. Subject matter having electric means for controlling the
motive power.
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187A | ... Remote control |
This subclass has no definition. | |
187B | ... Non-mechanical control of vehicles from wayside |
This subclass has no definition. | |
187C | ... Control of vehicle from leading vehicle |
This subclass has no definition. | |
188 | .. Fluid-pressure-actuated throttle: |
This subclass is indented under subclass 186. Subject matter having the throttle-valve of a steam-locomotive
directly actuated by fluid-pressure.
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| |||||
189 | . Engineer"s brake-valve actuation: |
This subclass is indented under subclass 167. Subject matter having means provided for actuating the engineer"s
brake-valve instead of a train-pipe valve.
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190 | . Train-pipe-valve structure: |
This subclass is indented under subclass 167. Subject matter relating to the structure of the vent-valve
of the air-brake train-pipe when especially adapted to be operated
or controlled by track devices.
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| |||||
191 | . Visual cab signals: |
This subclass is indented under subclass 167. Subject matter having visual signals provided which are
especially adapted for use in the engine-cab or on the train.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
192R | . Train mechanism: |
This subclass is indented under subclass 167. Subject matter having devices placed on the train which
cooperate with track devices in actuating cab signal and train-control
mechanism.
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193 | .. Electric or magnetic: |
This subclass is indented under subclass 192. Subject matter having train mechanism actuated or controlled
by electrical means.
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194 | ... Inductive: |
This subclass is indented under subclass 193. Subject matter where the track device acts upon the train
mechanism by electric induction and without physical contact between
them.
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195 | ... Intermittent contact: |
This subclass is indented under subclass 193. Subject matter having intermittent contacts or so-called "ramp-rails" used
for conducting electric current from the roadway to the vehicle.
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196 | ... Cab-circuit controller: |
This subclass is indented under subclass 193. Subject matter having circuit-controlling devices upon the
train for opening or closing train-circuits are actuated by track
devices.
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197 | .... Magnetically actuated: |
This subclass is indented under subclass 196. Subject matter having the train mechanism actuated from
the roadway by magnetic means and without physical contact between
the train-trip and track-detent.
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198 | .. Single-direction actuation: |
This subclass is indented under subclass 192. Subject matter having the train mechanism actuated only
when the car or train is moving forward and not when moving backward.
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199 | .. Frangible: |
This subclass is indented under subclass 192. Subject matter having frangible devices, usually closures,
for train-pipes which are broken by contact with track-detents and
so either vent the train-pipe of the air-brake system or actuate stop
or signal mechanism, their fracture indicating that a signal has
been disregarded.
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| |||||||
200R | .. Lever actuated: |
This subclass is indented under subclass 192. Subject matter having a lever carried by the train moved
by contact with a track-trip.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
200A | ... Lever perpendicular inclined less than 45 degree |
This subclass has no definition. | |
200B | ... Lever transverse relative to direction of travel |
This subclass has no definition. | |
192A | .. Train-carried electric contact mechanism |
This subclass has no definition. | |
201 | . Track trips: |
This subclass is indented under subclass 167. Devices placed upon the track and which cooperate with mechanism
upon the train in actuating signals thereupon or stopping it or controlling
its speed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
202 | .. Electric or magnetic: |
This subclass is indented under subclass 201. Track-trips actuated or controlled by electrical or magnetic
means.
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203R | .. Pivoted: |
This subclass is indented under subclass 201. Track-trips composed of a single pivoted member.
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203A | ... Single vertical pivot on which track trip turns |
This subclass has no definition. | |
203B | ... Single vertical pivot; strike rod transverse of track |
This subclass has no definition. | |
203C | ... Single horizontal pivot on which track trip turns |
This subclass has no definition. | |
203D | ... Single horizontal pivot; strike rod transverse of track |
This subclass has no definition. | |
203E | ... Horizontal pivot, vertical rod, strike rod perpendicular |
This subclass has no definition. | |
204 | .. Vertical motion: |
This subclass is indented under subclass 201. Track-trips moving vertically into operative position.
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205 | .. Lateral motion: |
This subclass is indented under subclass 201. Track-trips moving laterally into operative position. | |
206 | .. Fixed: |
This subclass is indented under subclass 201. Track-trips having no moving parts and permanently fixed
in operative position.
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207 | .. Portable: |
This subclass is indented under subclass 201. Portable track-trips without moving parts for use in emergencies
by trainmen and others and which can be temporarily secured in operative position
at any point required.
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167A | . Train approach warning for work cars |
This subclass has no definition. | |
167M | . Magnetic rail |
This subclass has no definition. | |
167D | . Vehicle-vehicle distance measuring |
This subclass has no definition. | |
208 | CAR-DISPLAYED CROSSING SIGNALS: |
This subclass is indented under the class definition. Signals, usually visual, displayed upon or given from a
standing or moving car or train to warn those attempting to cross
the track behind it that a car is approaching from the opposite direction.
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209 | PASSENGERS" STATION SIGNALS: |
This subclass is indented under the class definition. Station-signals for the use of passengers in signaling for
stopping trains, usually provided with means by which they are automatically
reset when the train departs.
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210 | TORPEDO MECHANISM: |
This subclass is indented under the class definition. Subject matter having means actuated by the movement of
a switch, signal, drawbridge, etc., for placing detonating signals
where a train can explode them.
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211 | . Electric: |
This subclass is indented under subclass 210. Subject matter where the means is electrically-actuated. | |
212 | . Magazine: |
This subclass is indented under subclass 210. Subject matter having a plurality of torpedoes stored in
a magazine.
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213 | .. Vertical: |
This subclass is indented under subclass 212. Subject matter having the torpedoes fed by gravity from a vertical magazine. | |
214 | .. Rotary: |
This subclass is indented under subclass 212. Subject matter having a rotary magazine for the storage
of the torpedoes.
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215 | . Car attached: |
This subclass is indented under subclass 210. Subject matter having car-attached mechanism for placing the torpedo upon the rail while the car is in motion. | |
216 | . Hand placing devices: |
This subclass is indented under subclass 210. Hand-held mechanism for placing torpedoes upon the track from the rear platform of a moving car. | |
217 | AUDIBLE SWITCH AND SIGNAL INDICATORS: |
This subclass is indented under the class definition. Audible indicators, such as bells and torpedoes, indicating
that visual signals or switches are at the danger position or that
dangerous conditions exist ahead.
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| |||||
218 | ELECTRIC ACTUATION: |
This subclass is indented under the class definition. Systems and mechanism for the electrical actuation of switches, signals and other elements of the class. | |
219 | . Control circuits: |
This subclass is indented under subclass 218. Circuits and systems of circuits especially adapted for controlling the operation of switch and signal motors, but not equivalent to a complete block, crossing, or other system. | |
220 | . Switch signals: |
This subclass is indented under subclass 218. Subject matter, having signals which are electrically controlled
or actuated for indicating the position of track-switches.
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221 | . Motor systems: |
This subclass is indented under subclass 218. Subject matter having electric-motor means placed upon the roadway and especially adapted for actuating switches, signals, and other similar movable elements of this class. | |
222 | .. Return-indication-current generation: |
This subclass is indented under subclass 221. Subject matter whereby when the switch or signal movement
has been accomplished a return-indication current is generated and
sent back to the actuating devices to operate indicators, release
operating-levers, locks, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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223 | .. Three-position signals: |
This subclass is indented under subclass 221. Subject matter especially adapted for actuating three-position
signals.
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224 | .. Home and distant signals: |
This subclass is indented under subclass 221. Subject matter especially adapted for the operation of two
signals- a home and a distant-placed upon the same mast.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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225 | .. Reciprocating armature: |
This subclass is indented under subclass 221. Subject matter in which the motor armature reciprocates
or oscillates in a substantially straight line.
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226 | ... Controller-actuated switches: |
This subclass is indented under subclass 225. Subject matter having means for actuating track-switches
by manipulation of the controller of an electrically-propelled car,
current being either used or cut out, while passing an insulated
section of third rail or trolley-wire connected to the switch-motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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227 | .... Opposed magnets: |
This subclass is indented under subclass 226. Subject matter in which an armature or double core of the
motor reciprocates between two opposed magnets or solenoids.
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228 | ..... Circuit changers: |
Subject matter under subclasss 227 having a circuit-changer
which is moved electrically or mechanically.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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229 | ..... Tandem contacts: |
This subclass is indented under subclass 227. Subject matter in which two successive or tandem contacts
or insulated sections of track or trolley-wire are connected to
the two magnets or solenoids.
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| |||
230 | .... Alternate throw: |
This subclass is indented under subclass 226. Subject matter in which each motion of a reciprocating member
alternately throws the track-switch first in one direction and then
in the other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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231 | ... Opposed magnets: |
This subclass is indented under subclass 225. Subject matter in which an armature or double core moves
between two opposed electromagnets or solenoids.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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232 | .... Circuit changers: |
This subclass is indented under subclass 231. Subject matter having devices by which the circuit connections
are changed during or at the completion of the given movement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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233 | .... Tandem contacts, switches: |
This subclass is indented under subclass 231. Subject matter for switches provided with and which have
a separate contact device for each magnet, the same being arranged
in tandem or succession, usually in front of the switch to be actuated.
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| |||
234 | .... Parallel contacts, switches: |
This subclass is indented under subclass 231. Subject matter for switches and which have a pair of contact
plates, conductors, or ramp-rails (one for each magnet) placed together
in parallel in front of the switch, and provided with means on the
car for making electrical connection with either one of same, as
desired.
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235 | ..... Circuit controller: |
This subclass is indented under subclass 234. Subject matter for switches and having an electric switch or shunt circuit controller mechanism on the car, whereby the proper solenoid or magnet may be energized. | |
236 | ... Alternate throw: |
This subclass is indented under subclass 225. Subject matter having mechanical means arranged so that
each motion of a reciprocating member alternately throws the track-switch first
in one direction and then in the other.
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237 | ... Fly-back: |
This subclass is indented under subclass 225. Subject matter in which the elements actuated are set and
held against gravity or a spring, which restores them to their original
position upon the cessation of current.
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238 | .... Latch or clutch release: |
This subclass is indented under subclass 237. Subject matter in which the elements actuated are set and
held in position against gravity or a spring by latches, clutches,
or brakes, or their equivalents, which are released by electrical means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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239 | .... Switches: |
This subclass is indented under subclass 237. Switch-actuating mechanism of the type stated. | |
240 | .. Rotary armature: |
This subclass is indented under subclass 221. Subject matter in which the armature rotates or oscillates in a curvilinear path. | |
241 | ... Opposed motors: |
This subclass is indented under subclass 240. Subject matter in which the action of one rotary-armature
motor opposes that of another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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242R | ... Circuit changers: |
This subclass is indented under subclass 240. Subject matter in which automatic means are provided for
changing or modifying the circuits.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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242A | .... Overload release |
This subclass has no definition. | |
242B | .... Dual selector circuit |
This subclass has no definition. | |
242C | ..... Remote lever, local selector |
This subclass has no definition. | |
243 | ... Fly-back: |
This subclass is indented under subclass 240. Subject matter in which a rotary armature is set and held
against gravity or a spring, which restores it to its original position
upon the cessation of current.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
244 | .... Latch or clutch release: |
This subclass is indented under subclass 243. Subject matter in which a rotary armature is set and held
in position against gravity or a spring by latches, clutches, or
brakes, or their equivalents, which are released by electrical means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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245 | . Car-actuated generators: |
This subclass is indented under subclass 218. Subject matter by which the energy of the moving vehicle
is converted, by mechanism on the track, into electrical energy,
which is used for actuating switches and signals.
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246 | . Car-actuated circuit controllers: |
This subclass is indented under subclass 218. Subject matter in which circuit closing or breaking devices
are actuated by the wheels or tappets of moving cars, including
the so-called "track instruments" and "treadles" of
railway signaling.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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247 | .. Wheel or train counting: |
This subclass is indented under subclass 246. Subject matter provided with mechanism, usually of the step-by-step
variety, by means of which as many trains or car-wheels as enter must
leave the block before the signal is restored to safety.
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248 | .. Retarded action: |
This subclass is indented under subclass 246. Subject matter in which the return of the circuit-controller
to normal condition is retarded after the passage of the train,
usually for a predetermined interval of time.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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249 | .. Electric or magnetic: |
This subclass is indented under subclass 246. Subject matter in which circuit controllers are actuated
in whole or in part by electric or magnetic means.
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250 | .. Single-direction actuation: |
This subclass is indented under subclass 246. Subject matter in which a circuit controller is actuated
by trains moving in one direction only.
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251 | .. Vertically sprung rail: |
This subclass is indented under subclass 246. Subject matter in which a circuit controller is actuated by the vertical yielding of the rail under the weight of the passing train. | |
252 | .. Trolley or plow actuated: |
This subclass is indented under subclass 246. Subject matter in which a circuit controller is supported
by the trolley-wire or third rail and actuated mechanically by the
current-collector.
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253 | . Switch or signal actuated controllers: |
This subclass is indented under subclass 218. Subject matter in which a circuit controller is actuated
by the motion of signals, switches, and other movable elements,
sometimes known in the art as "switch-boxes".
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254 | . Trolley-completed circuits: |
This subclass is indented under subclass 218. Subject matter in which a trolley or plow, its wheel, or
some member attached to the trolley makes a temporary electrical
contact with one or more contact-surfaces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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255 | . Car-wheel-completed circuits: |
This subclass is indented under subclass 218. Subject matter in which a car-wheel or a special wheel carried by a car makes a temporary electrical contact between two or more contact-surfaces. | |
256 | . Relays: |
This subclass is indented under subclass 218. Subject matter having electrically-actuated circuit closing
and breaking devices especially adapted for use in controlling circuits
actuating railway switches and signals and not of general application.
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257 | FLUID-MOTOR ACTUATION: |
This subclass is indented under the class definition. Actuating mechanism operated by fluid-pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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258 | . Electric control: |
This subclass is indented under subclass 257. Subject matter having valves which are electrically controlled.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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259 | .. Car-controlled switches: |
This subclass is indented under subclass 258. Subject matter having valves electrically controlled by
a moving car or train.
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260 | . Signals: |
This subclass is indented under subclass 257. Subject matter which actuates a signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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261 | . Gates: |
This subclass is indented under subclass 257. Subject matter which actuates a gate.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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262 | MECHANICAL-MOTOR ACTUATION: |
This subclass is indented under the class definition. Subject matter in which a spring or weight motor is used
for actuating switches, signals, or analogous devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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263 | . Electric control: |
This subclass is indented under subclass 262. Subject matter , the operation of which is controlled by
electrical means.
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264 | POINT THROWERS: |
This subclass is indented under the class definition. Devices attached to and operated from the car, and sometimes
utilizing its energy of motion, for throwing the unmodified or but slightly-modified
points of ordinary tongue or point switches by direct contact therewith.
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265 | . Magnetic: |
This subclass is indented under subclass 264. Subject matter having a permanent or an electromagnet, which
moves the point by magnetic attraction.
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266 | . Modifier switch: |
This subclass is indented under subclass 264. Subject matter adapted for throwing the points of switches
of special construction, in which the point is only slightly modified,
if at all, on the special switch construction used in cooperation
with the particular point-thrower.
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267 | .. Directing-grooves: |
This subclass is indented under subclass 266. Subject matter in which the point throwers are directed
into contact with the switch-point by fixed grooves in the switch.
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268 | . Wedging wheel: |
This subclass is indented under subclass 264. Subject matter having a wheel with sharp edges, designed
for operating on and wedging over the points of point and tongue
switches of ordinary construction.
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269 | . Sliding shoe: |
This subclass is indented under subclass 264. Subject matter having a wedge-shaped shoe sliding longitudinally
in the flangeways and designed to wedge over the points of unmodified
point and tongue switches.
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270R | VEHICLE-ENERGY ACTUATION: |
This subclass is indented under the class definition. Subject matter in this subclass by which signals, switches,
gates, and other movable elements of this class are actuated by
the energy of the moving vehicle; either by direct mechanical connection
with the train- actuated track-trip or indirectly by means of power
stored up in springs, counterweights, and trains of clockwork by
the moving vehicle through the medium of track-trips.
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271 | . Fluid transmission: |
This subclass is indented under subclass 270. Subject matter in which power is transmitted from a track-trip to the device actuated by means of a column of fluid. | |
272 | .. Gates: |
This subclass is indented under subclass 271. Subject matter which actuates a railway gate.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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273 | . Continuous-rail crossings: |
This subclass is indented under subclass 270. Subject matter having a grade-crossing of two lines of railway
provided with means, actuated automatically by an approaching train,
so as to secure for the train an unbroken line of rails.
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274 | . Switch-connected frogs: |
This subclass is indented under subclass 270. Subject matter having a switch actuated by a track-trip
and mechanically connected with one or more movable-rail frogs,
so as to secure for the train an unbroken line of rails.
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275 | . Continuous-rail frogs: |
This subclass is indented under subclass 270. Subject matter having movable-rail frogs which are set automatically
by an approaching train, so as to secure unbroken line of rails.
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276 | .. Spring rail: |
This subclass is indented under subclass 275. Subject matter having continuous-rail frogs which yield against the action of springs or the resilience of the moving rails, to the lateral pressure of trailing wheels. | |
277 | . Automatic turnouts: |
This subclass is indented under subclass 270. Subject matter having turnouts or passing-sidings provided
with vehicle-energy-actuated switches placed at the ends of same
for automatically switching two approaching trains upon the proper
tracks for passing.
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| |||||
This subclass has no definition. | |
278 | .. Facing setting: |
This subclass is indented under subclass 270. Subject matter having means for manually actuating switches
combined with means for automatically actuating the same by the
energy of a vehicle approaching the same, facing.
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279 | ... Manual control: |
This subclass is indented under subclass 278. Subject matter having switch-actuating mechanism by which
a train can enter a siding only when the automatic setting mechanism
is held by the switchman in an inoperative position against gravity
or springs, which return the switch to its original position when
the switchman releases it.
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280 | ... Resetting: |
This subclass is indented under subclass 278. Subject matter having switch-actuating mechanism by means
of which the switch, having been set for the siding by the approaching
train, is automatically reset for main line after the train has
entered the siding.
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281 | .... Vehicle restrained: |
This subclass is indented under subclass 280. Subject matter having switch-actuating mechanism in which
the vehicle upon entering the switch maintains contact with a yielding
member until clear of the main track, whereupon the switch is automatically
reset, by spring or counterweight, to "mainline clear".
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282 | ... Trailing setting: |
This subclass is indented under subclass 278. Subject matter having switch-actuating mechanism in which
a switch wrongly set is automatically reset by trains running in
either direction.
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283 | .... Yielding rail: |
This subclass is indented under subclass 282. Subject matter including switch-actuating mechanism enabling a switch to be set from a train approaching it facing, and also when approaching it trailing, by the lateral pressure, in the latter case, of the wheel-flanges of the train against a yielding switch-rail. | |
284 | .. Trailing setting: |
This subclass is indented under subclass 270. Subject matter including mechanism for the manual actuation
of switches combined with mechanism for the actuation of same by
the energy of a moving vehicle approaching the same trailing.
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285 | ... Yielding rail: |
This subclass is indented under subclass 284. Subject matter including a yielding section of the traction-rail which is sprung or actuated by a wheel of the moving train. | |
286 | .... Spring-clutch: |
This subclass is indented under subclass 285. Subject matter in which a resisting force is furnished by the compression of a spring, caused by the slipping of a clutch or cam actuated by the pressure, upon the switch rail, of a car-wheel trailing through the switch. | |
287 | ..... Coaxial spring: |
This subclass is indented under subclass 286. Subject matter including a compressed spiral spring, concentric with the revolving spindle of the stand, the so-called "Ramapo" type of stand being here included. | |
288 | .... Counterweight: |
This subclass is indented under subclass 285. Subject matter including mechanism whereby a switch-stand is held closed against ordinary manual force, but is capable of being automatically thrown and secured, against the action of a counter-weight, by the passage of the first wheel trailing through the switch. | |
289 | .... Frangible: |
This subclass is indented under subclass 285. Subject matter including mechanism whereby a switch stand is normally locked against ordinary manual force, but is capable, by the breaking of some frangible part or the yielding of the lock, of being automatically thrown, and sometimes locked, by the passage of the first wheel trailing through the switch. | |
290 | .. Trailing fly-back: |
This subclass is indented under subclass 270. Subject matter including a switch stand provided with means
for allowing the switch-rails to move apart and fly back against
the resistance of the mechanism of the stand upon the passage of
each trailing wheel.
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291 | ... Spring actuated: |
This subclass is indented under subclass 290. Subject matter provided with means for allowing the switch-rails to spring apart and fly back against the compression or distention of a spring located in the stand upon the passage of each trailing wheel through the switch. | |
292 | . Signals and gates, automatic: |
This subclass is indented under subclass 270. Subject matter including signals or gates which are automatically
actuated by the energy of a moving vehicle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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293 | .. Highway crossing: |
This subclass is indented under subclass 292. Subject matter including signals specially adapted and intended
for use at highway-crossings of railways.
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294 | ... Visual and audible: |
This subclass is indented under subclass 293. Subject matter including combined visual and audible signals.
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295 | ... Audible: |
This subclass is indented under subclass 293. Subject matter including audible highway-crossing signals. | |
296 | .... Bells, single stroke: |
This subclass is indented under subclass 295. Subject matter including a bell, in which a single stroke of the bell is given by the action of each wheel of the train. | |
297 | .. Track mechanism: |
This subclass is indented under subclass 292. Subject matter including signals and gates which are automatically
actuated by the energy of the moving vehicle, the devices of this
subclass and of the subclasses indented thereunder being classified
upon either the mechanism connecting the gate or signal with the
track mechanism or upon the function or structure of such mechanism.
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298 | ... Single direction: |
This subclass is indented under subclass 297. Subject matter including track devices for actuating signals
and gates, operated by vehicles moving in one direction only.
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299 | ... Latch or clutch release: |
This subclass is indented under subclass 297. Subject matter including signals or gates which are set
and latched in position by moving trains against the force of a
spring or gravity, the latch or clutch being released by an approaching
or departing train.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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300 | .... Electric: |
This subclass is indented under subclass 299. Subject matter having a latch or clutch which is released
by electrical means.
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301 | .... Longitudinal motion: |
This subclass is indented under subclass 299. Subject matter having a track device which actuates the
latch or clutch and which moves in the direction of the traffic.
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302 | .... Vertical motion: |
This subclass is indented under subclass 299. Subject matter having a track device which moves the latch
or clutch and which moves vertically.
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303 | ... Longitudinal spiral cam: |
This subclass is indented under subclass 297. Subject matter including a track device which is revolved
on an axis parallel to the rails by the action of a car-tappet upon
a screw, helix, cam or spiral groove.
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304 | ... Vehicle-restrained gates and doors: |
This subclass is indented under subclass 297. Subject matter including a gate or door which is held against
gravity or a spring by contact with the moving vehicle.
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305 | .... Parallel swing: |
This subclass is indented under subclass 304. Subject matter including track devices in the form of bars,
which always remain parallel to the traction-rails, while swinging
vertically or horizontally about axes or pivot-points.
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306 | .... Longitudinal motion: |
This subclass is indented under subclass 304. Subject matter including a restraining device which moves
longitudinally in the direction of the traffic.
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307 | .... Vertical motion: |
This subclass is indented under subclass 304. Subject matter including a restraining device which moves
vertically.
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308 | ..... Swinging: |
This subclass is indented under subclass 307. Subject matter including a restraining device which swings
vertically.
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309 | ...... Yielding rail: |
This subclass is indented under subclass 308. Subject matter including a track-rail which yields vertically under the weight of the train, thereby actuating the gate or door. | |
310 | ... Parallel swing: |
This subclass is indented under subclass 297. Subject matter including track devices which move with a
vertical or horizontal swinging motion parallel to and in the direction
of the rails, similar to that of a parallel-ruler.
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311 | ... Longitudinal motion: |
This subclass is indented under subclass 297. Subject matter having track devices which move longitudinally
in the direction of the traffic.
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312 | .... Rectilinear: |
This subclass is indented under subclass 311. Subject matter having track devices which move in right lines parallel to the traction-rails. | |
313 | ... Vertical motion: |
This subclass is indented under subclass 297. Subject matter having track devices which move vertically.
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314 | . Switches, automatic: |
This subclass is indented under subclass 270. Subject matter having track switches which are automatically
set or reset by the energy of the moving vehicle, acting directly
on the switch through the vehicle-wheels or some fixed member in
advance of the wheels or through a separate track instrument connected
to the switch by motion-transmitting mechanism.
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| |||||||
315 | .. Resetting, vehicle restrained: |
This subclass is indented under subclass 314. Subject matter having switches usually actuated by the approaching
vehicle which during its passage maintains contact with a yielding member
until clear of the main track, whereupon the switch is automatically
reset by spring or counterweight to "main-line clear".
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| |||||
316 | .. Wheel resetting: |
This subclass is indented under subclass 314. Subject matter including a switch which is usually actuated by the approaching vehicle, which after its passage onto the side track automatically closes the switch resetting it for the main line by the action of the car-wheels upon trips or rails other than the laterally- moving switch-rails forward of their pivot. | |
317 | .. Facing setting: |
This subclass is indented under subclass 314. Subject matter including a switch which, if set for siding,
is automatically reset for main line by a train approaching it facing,
provided the resetting mechanism is not intentionally temporarily
withdrawn from actuating position.
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| |||||||
318 | .. Trailing setting: |
This subclass is indented under subclass 314. Subject matter including a switch locked against ordinary
force, but capable of being automatically thrown and locked by the
pressure, upon the moving rail or point, of the first wheel trailing
through the switch.
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319 | .. Trailing fly-back: |
This subclass is indented under subclass 314. Subject matter including a switch, usually point or tongue,
which is forced open, generally against springs or counterweights,
by direct contact of each wheel of a train trailing through the
switch and which flies back or is automatically moved back after
the passage of same.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
320R | ... Spiral spring: |
This subclass is indented under subclass 319. Subject matter in which the switch is returned automatically to its original position by the power on one or more spiral springs. | |
321 | .... Tie or connecting rod: |
This subclass is indented under subclass 320. Subject matter having a single spiral spring located upon either the tie-rod or the connecting-rod. | |
320A | .... Dash pot |
This subclass has no definition. | |
322 | .. Track mechanism: |
This subclass is indented under subclass 314. Subject matter not above classified whereby track-switches
are actuated by the energy of an approaching vehicle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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323 | ... Selective: |
This subclass is indented under subclass 322. Subject matter including car-actuated switch-shifting mechanism
for automatically directing a plurality of cars to various tracks
in predetermined order or for automaticaly actuating the necessary
switches along the route of a car.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
324 | ... Latch or clutch release: |
This subclass is indented under subclass 322. Subject matter including car-actuated switches which are
reset for main line automatically by latch or clutch release devices
cooperating with springs or counterweights.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
325 | .... Electric control: |
This subclass is indented under subclass 324. Subject matter in which the latch or clutch is operated
by electrical means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
326 | ... Electric control: |
This subclass is indented under subclass 322. Subject matter including switch-operating track mechanism
controlled by electrical means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
327 | ... Alternate throw: |
This subclass is indented under subclass 322. Subject matter including a switch actuated by a single-track
device, the successive operation of which in the same manner alternately
sets the switch for siding or main line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
328 | .... Tappet wheel: |
This subclass is indented under subclass 327. Subject matter in which a tappet-wheel is used as the track device. | |
329 | ... Three and multiple throw: |
This subclass is indented under subclass 322. Subject matter including an automatic switch for three or
more tracks diverging from the same point.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
330 | ... Traffic protected: |
This subclass is indented under subclass 322. Subject matter including track mechanism normally withdrawn from actuating position, so that ordinary street traffic has no power to either throw the switch or damage the mechanism, the track device being automatically placed in actuating position by the approaching car, so that it can be actuated by the switch-throwing means. | |
331 | ... Rotary longitudinal connecting shaft: |
This subclass is indented under subclass 322. Subject matter including a track device and a switch which are connected by a longitudinal rotary connecting-shaft. | |
332 | ... Cable and pulley connection: |
This subclass is indented under subclass 322. Subject matter including a track device and a switch which are connected by a system of cables and pulleys. | |
333 | ... Longitudinal sprial cam: |
This subclass is indented under subclass 322. Subject matter including switches which are actuated by
devices which are revolved on an axis parallel to the rails by the
action of a car device upon a screw, helix, cam, or spiral groove.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
334 | ... Rack and pinion: |
This subclass is indented under subclass 322. Subject matter including switches which are actuated by star and pinion wheels or their equivalents, the train-trip being either a toothed rack, a brush, a friction-bar, or some equivalent device. | |
335 | ... Bow spring: |
This subclass is indented under subclass 322. Subject matter including devices of the bow-spring type
used for actuating switches.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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336 | ... Longitudinal motion: |
This subclass is indented under subclass 322. Subject matter including switches actuated by track devices
which move longitudinally in the direction of the traffic.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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337 | .... Train-trip elevation: |
This subclass is indented under subclass 336. Subject matter in which the track device releases the train-trip by causing its elevation. | |
338 | .... Track-mechanism depression: |
This subclass is indented under subclass 336. Subject matter in which the track device is released from the train-trips by being depressed. | |
339 | .... Perpendicular swing: |
This subclass is indented under subclass 336. Subject matter in which the track device swings in a perpendicular
plane parallel to the direction of the traffic.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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340 | ..... Double: |
This subclass is indented under subclass 339. Subject matter in which pairs of connected track devices
are used, each moving the switch in a direction opposite from the
other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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341 | .... Horizontal swing: |
This subclass is indented under subclass 336. Subject matter including switches actuated by track devices
which swing in a horizontal plane.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
342 | ..... Double acting: |
This subclass is indented under subclass 341. Subject matter including track devices which can be acted
upon at two different contact-points, whereby the switch can be
thrown in either direction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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343 | ..... Double: |
This subclass is indented under subclass 341. Subject matter in which pairs of track devices are used,
each moving the switch in a direction opposite from the other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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344 | ... Transverse motion: |
This subclass is indented under subclass 322. Subject matter having track devices which move at right angles to the direction of traffic. | |
345 | .... Duplex lever: |
This subclass is indented under subclass 344. Subject matter having a switch which is actuated by a plurality
of levers moving transversely and which coact at the ends opposite their
fulcrums.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
346 | .... Swinging: |
This subclass is indented under subclass 344. Subject matter having track mechanism which swings transversely
to the direction of the traffic.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
347 | ..... Double acting: |
This subclass is indented under subclass 346. Subject matter having track devices which can be acted upon
at two different contact-points, whereby the switch can be thrown
in either direction.
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348 | ...... Guiding tail: |
This subclass is indented under subclass 347. Subject matter having a track device which is provided with a tail or extension behind the pivot, the function of which is to guide the train-trip into proper contact with the track device. | |
349 | ..... Double: |
This subclass is indented under subclass 346. Subject matter having pairs of track devices, each moving
the switch in a direction opposite from the other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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350 | .... Double acting: |
This subclass is indented under subclass 344. Subject matter having track devices which can be acted upon
at two different contact-points, whereby the switch can be thrown
in either direction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
351 | .... Vertical motion: |
This subclass is indented under subclass 344. Subject matter having switches which are actuated by vertically-moving
track devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
352 | ..... Duplex lever: |
This subclass is indented under subclass 351. Subject matter having switches which are actuated by one
or more sets of end-pivoted double levers, which coact at their
ends opposite their fulcrums.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
353 | ..... Swinging: |
This subclass is indented under subclass 351. Subject matter having switches which are actuated by track
mechanism swinging vertically.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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354 | ...... Double acting: |
This subclass is indented under subclass 353. Subject matter having trail devices which can be acted upon
at two different contact-points, whereby the switch can be thrown
in either direction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
355 | ...... Double: |
This subclass is indented under subclass 353. Subject matter having pairs of track devices each moving
the switch in a direction opposite from the other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
356 | ..... Double: |
This subclass is indented under subclass 351. Subject matter having pairs of connected track-trips, each
moving the switch in a direction opposite from the other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
357 | ...... Transverse lever connection: |
This subclass is indented under subclass 356. Subject matter having track devices which are transversely connected by a horizontal lever. | |
358 | . Switch locks, automatic: |
This subclass is indented under subclass 270. Subject matter having train-actuated devices, sometimes
called "lock-bars", by which a moving train can
lock or secure in place a switch over which it is passing or is
a about to pass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
359 | . Train trips: |
This subclass is indented under subclass 270. Subject matter having devices upon cars by which track mechanism
is actuated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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360 | .. Electric or magnetic: |
This subclass is indented under subclass 359. Subject matter having train-trips which are moved into operative
position by electric or magnetic means or moving track devices by magnets
attraction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
361 | .. Fluid pressure: |
This subclass is indented under subclass 359. Subject matter having train-trips which are moved into operative
position by fluid-pressure means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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362 | .. Resilient: |
This subclass is indented under subclass 359. Subject matter having train-trips which yield after the switch or signal has been actuated, thus allowing the car to pass on without injury to the mechanism. | |
363 | .. Hooks: |
This subclass is indented under subclass 359. Subject matter having means whereby a car-carried hook engages
with and actuates a ring, loop, or similar device upon the track.
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364 | .. Racks or friction bars: |
This subclass is indented under subclass 359. Subject matter having train trips whose contacting members
are either toothed racks, brushes, friction-bars, or their equivalents.
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365 | .. Pivoted: |
This subclass is indented under subclass 359. Subject matter having train trips wheel swing upon pivots
into operative position.
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366 | ... Wheel: |
This subclass is indented under subclass 365. Subject matter having a wheel which is used as the contacting
element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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367 | ... Rod: |
This subclass is indented under subclass 365. Subject matter having a rod which is used as the contacting element. | |
368 | .. Vertical motion: |
This subclass is indented under subclass 359. Subject matter having a trip which is moved vertically into
operative position.
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369 | ... Wheel: |
This subclass is indented under subclass 368. Subject matter having vertically-moving trips which use
a wheel as the contacting element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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370 | ... Rod: |
This subclass is indented under subclass 368. Subject matter having vertically-moving trips which use
a rod as the contacting element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
371 | .. Lateral motion: |
This subclass is indented under subclass 359. Subject matter having a train trip which moves laterally
into operative position.
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372 | ... Wheel: |
This subclass is indented under subclass 371. Subject matter having a wheel which is used as the contacting
element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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373 | ... Rod: |
This subclass is indented under subclass 371. Subject matter having a rod which is used as the connecting
element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
270A | . Automatic switch actuation from or by vehicle |
This subclass has no definition. | |
374 | SAFETY SIDINGS: |
This subclass is indented under the class definition. Subject matter having a siding in which the main-track switch
is mechanically connected to a derailing-block or safety-switch
in the siding, the derailing-block or safety-switch being opened
when the main-track switch is closed, so that cars on the siding
are prevented from fouling the main line.
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375 | CONTINUOUS-RAIL CROSSING: |
This subclass is indented under the class definition. Subject matter having a crossing of two or more lines of
railway-track in which there is always preserved an unbroken rail
for each line of road when a train is passing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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376 | . Overlapped main: |
This subclass is indented under subclass 375. Subject matter having single rails or sections of track
which swing or fold over upon and overlap other lines of rail.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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377 | . Pivoted rail: |
This subclass is indented under subclass 375. Subject matter having pivoted rails which are placed at
the points of intersection.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
378 | . Rotary block: |
This subclass is indented under subclass 375. Subject matter having rotary blocks which carry rail-sections
at the crossing-points.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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379 | . Movable point: |
This subclass is indented under subclass 375. Subject matter having crossings in which two adjacent point-switches
facing each other are mechanically connected, so as to move in unison,
but in opposite directions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
380 | . Sliding rail: |
This subclass is indented under subclass 375. Subject matter having blocks, rails, or track-sections which
slide into place.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
381 | .. Longitudinal: |
This subclass is indented under subclass 380. Subject matter in which the rails slide in a direction longitudinal with reference to the traffic. | |
382 | SWITCH-CONNECTED FROGS: |
This subclass is indented under the class definition. Subject matter having a switch which is combined with various
types of movable-rail substitutes for rigid frogs, insuring an unbroken
rail at the frog-point, and which is provided with mechanism for
the simultaneous actuation of the switch and the frog substitute.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
383 | . Overlapped main: |
This subclass is indented under subclass 382. Subject matter , having switch-connected frogs in which
sections of the siding rail slide, swing, or fold into position,
overlapping the main-line rail.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
384 | .. Double rail: |
This subclass is indented under subclass 383. Subject matter having switch-connected frogs in which two sections of the siding-rail meet over the main-line rail. | |
385 | . Swinging tongue: |
This subclass is indented under subclass 382. Subject matter having a pivoted tongue or pointed double rail which swings between two fixed wing-rails. | |
386 | .. Stub end: |
This subclass is indented under subclass 385. Subject matter in which the tongue or double rail is not pointed, but has one or more stub or beveled ends. | |
387 | . End-pivoted rail: |
This subclass is indented under subclass 382. Subject matter in which an end-pivoted rail is placed at
the frog-point.
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| |||
388 | . Center-pivoted rail: |
This subclass is indented under subclass 382. Subject matter in which a center-pivoted rail under subclass
382 is placed at the frog-point.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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389 | . Swinging rail: |
This subclass is indented under subclass 382. Subject matter in which two or more rails are simultaneously swung into position. | |
390 | .. Opposed swing: |
This subclass is indented under subclass 389. Subject matter in which two or more moving stub-rails swing, with reverse motion, into connection with each other. | |
391 | .. Wing: |
This subclass is indented under subclass 389. Subject matter in which switch-connected frogs are provided with a fixed frog-point and swinging wing-rails. | |
392 | . Transversely sliding rail: |
This subclass is indented under subclass 382. Subject matter having moving rails which slide laterally
into position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
393 | SWITCH STANDS: |
This subclass is indented under the class definition. Subject matter having means located at switches for their
manual actuation, usually provided with a target or other visual
signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
394 | . Cab signal or train control: |
This subclass is indented under subclass 393. Subject matter having switch stands equipped with mechanism
for actuating cab signal or train-control mechanism on approaching
train when the switch is open.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
395 | . Resetting: |
This subclass is indented under subclass 393. Subject matter having stands which insure the resetting
of the switch to "unbroken main" after the passage
of the train, either automatically by energy other than that of
the moving vehicle or by alarms or other devices insuring manual
actuation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
396 | .. Latch release, automatic: |
This subclass is indented under subclass 395. Subject matter having switch-actuating mechanism provided
with train-actuated latch-release mechanism, permitting the switch
to be thrown to "main-line clear" by the force
of springs or counterweights as the train approaches.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
397 | .. Hand restrained: |
This subclass is indented under subclass 395. Subject matter having a switch stand in which the switch
is held open by the switchman against the action of springs, counterweights, etc.,
the switch automatically closing when released.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
398 | .. Vehicle restrained: |
This subclass is indented under subclass 395. Subject matter having a switch stand in which the switch,
after being opened manually, is held open, by the action of the
car-wheels upon treadles and other devices, against springs or counterweights
or their equivalents, the switch automatically closing after the
passage of the train.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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399 | .. Detention devices: |
This subclass is indented under subclass 395. Subject matter having means for detaining the switchman
at the switch until it is properly closed and locked, either by
confinement in cages or by means of handcuffs, shackles or other
body-locks.
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400 | .. Key retaining: |
This subclass is indented under subclass 395. Subject matter having switch keys which cannot be removed
from the switch-lock until the switch has been properly reset and
locked.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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401 | . Rail lock and position indication: |
This subclass is indented under subclass 393. Subject matter having switch stands with special locks acting
directly on the switch-rails or on moving parts other than the operating-rod and
connected to the switch-stand proper through the switch-rails.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
402 | .. Transverse rotary locking shaft: |
This subclass is indented under subclass 401. Subject matter having a switch stand in which the lock is
actuated by the rotation of a shaft placed transversely to the switch-rails.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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403 | . Three and multiple throw: |
This subclass is indented under subclass 393. Subject matter having a switch stand specially adapted for
the actuation of three and multiple throw switches.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
404 | . Adjustable throw: |
This subclass is indented under subclass 393. Subject matter having a switch stand provided with means
for adjusting the throw of the switch.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
405 | . Spiral-cam actuated: |
This subclass is indented under subclass 393. Subject matter having a spiral cam for transmitting motion
to the switch-rails.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
406 | . Gear actuated: |
This subclass is indented under subclass 393. Subject matter having gearing for transmitting motion to the switch-rails. | |
407 | . Structural types: |
This subclass is indented under subclass 393. Subject matter having stands not hereinbefore classified as to function, and defined by structural characteristics. | |
408 | .. Depressed mechanism: |
This subclass is indented under subclass 407. Subject matter having stands without projections above the pavement liable to be damaged by street traffic, and so especially adapted for use by street-railways in cities and towns. | |
409 | .. High semaphore stands: |
This subclass is indented under subclass 407. Subject matter having switch stands provided with an elevated
semaphore-signal usually used at the entrance to main-line sidings.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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410 | .. Vertical lever: |
This subclass is indented under subclass 407. Subject matter having switch stands which are actuated by
a vertical lever.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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411 | ... Ground stands: |
This subclass is indented under subclass 410. Subject matter having switch stands of low construction
specially adapted for use in yards.
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412 | .. Horizontal lever: |
This subclass is indented under subclass 407. Subject matter having a switch stand actuated by a horizontal
lever and usually also having a horizontal locking-segment.
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413 | ... Drop arm: |
This subclass is indented under subclass 412. Subject matter having a switch stand which has a pivoted
arm, which drops into a notch in the locking-segment, forming an
automatic lock.
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| |||||
414 | .... Automatic key-lock: |
This subclass is indented under subclass 413. Subject matter having an automatic spring key-lock built
into the body of the stand or lever.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||
415R | SWITCHES: |
This subclass is indented under the class definition. Subject matter having means for enabling a succession of
cars to pass to a selected one of several diverging lines of track.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||
416 | . Slip: |
This subclass is indented under subclass 415. Subject matter having switches and connecting-tracks placed
at diagonal crossings and permitting a change of direction from
one line to another, as well as a continuance upon the same line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
417 | . Frog obviating: |
This subclass is indented under subclass 415. Subject matter having a switch so constructed as to obviate the use of rigid or spring rail frogs or movable-rail substitutes for frogs, one or more movable devices performing the double function of a frog and a switch. | |
418 | .. Single ral: |
This subclass is indented under subclass 417. Subject matter having a single movable switch-rail extending
from the switch-point to the point where the frog would normally
be placed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
419 | . Conduit, third rail or trolley: |
This subclass is indented under subclass 415. Subject matter having a switch which is more or less modified
in construction by the presence of conduits, third rails, and cables
and conducting-wires of cable and electric railways.
| |||
420 | . Nonderailing, trailing: |
This subclass is indented under subclass 415. Subject matter having a switch through which, however set,
an ordinary train can be run trailing without derailment and without
moving any parts of the switch.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
421 | .. Risers: |
This subclass is indented under subclass 420. Subject matter having a switch provided with one or more
devices, called "risers", upon which the wheels
are carried over the top of the stock-rail and are guided into position
by the action of the guard rail or grooves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
422 | .. Moving guard rail: |
This subclass is indented under subclass 420. Subject matter having a switch provided with fixed points and moving guard-rails, the function of the latter being to direct the wheels to the proper track. | |
423 | . Facing, rerailing: |
This subclass is indented under subclass 415. Subject matter having point switches provided with devices for rerailing cars running facing when derailed or split by the failure of the points to come fully home. | |
424 | . Facing, selective: |
This subclass is indented under subclass 415. Subject matter having switches without movable parts, the
direction taken by the car being determined in various ways, some
of which are specified in the following subclasses.
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425 | .. Side draft: |
This subclass is indented under subclass 424. Subject matter having a switch of such construction that the car can be drawn over and directed to the main or branch track by the side draft or internal traction of a team of draft-animals. | |
426 | .. Modified wheel: |
This subclass is indented under subclass 424. Subject matter having a switch in which wheels of special construction (as, for example, when provided with extra flanges) determine the direction which the car is to take. | |
427 | . Stationary turnout: |
This subclass is indented under subclass 415. Subject matter having switches without moving parts which
divert trains running facing onto the siding and allow trains running
trailing to continue, underailed, upon the main line, or vice versa.
| |||
428 | . Snow protected: |
This subclass is indented under subclass 415. Subject matter having switches so constructed as not to
be readily clogged by snow and ice, which is usually either melted
or automatically removed by the movement of the switch.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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429 | . Overlap: |
This subclass is indented under subclass 415. Subject matter having continuous main-line rails and switch-points
which overlap same when set for siding.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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430 | . Sliding: |
This subclass is indented under subclass 415. Subject matter having a switch in which a plate carrying
a section of track-rail slides laterally.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
431 | . Oscillating, longitudinal axis: |
This subclass is indented under subclass 415. Subject matter having switches in which the moving rails revolve or oscillate about an axis parallel to the rails. | |
432 | . Risers: |
This subclass is indented under subclass 415. Subject matter having a switch in which the wheel rides
upon a riser block or rail, and is thereby lifted and drawn over
the top of a gauge-rail by the action of guard rails or grooves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
433 | . Vertical motion: |
This subclass is indented under subclass 415. Subject matter having a switch which moves vertically instead of horizontally and with points usually rising and falling alternately. | |
434 | . Flexible rail: |
This subclass is indented under subclass 415. Subject matter having a switch in which one or both of the main-line rails are sprung laterally, often against a fixed point-rail. | |
435R | . Point: |
This subclass is indented under subclass 415. Subject matter having a switch in which the ends of one
or both of the movable switch-rails terminate in points, as opposed
to stub ends, the stationary rail being unbroken.
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| |||||
436 | .. Recessed rail: |
This subclass is indented under subclass 435. Subject matter having point switches in which the stock-rail is recessed to receive the point-rail. | |
437 | .. Renewable and reenforced: |
This subclass is indented under subclass 435. Subject matter having a point switch which has renewable or reinforced points. | |
438 | .. Point and mate: |
This subclass is indented under subclass 435. Subject matter having a switch with a fixed frog or switch mate in one rail and a moving point in the other. | |
439 | .. Tandem: |
This subclass is indented under subclass 435. Subject matter having point switches in which one point
is placed in advance of the other.
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440 | .. Three throw: |
This subclass is indented under subclass 435. Subject matter having a point switch for passing to one
of three different tracks.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
441 | .. Tread guard rail: |
This subclass is indented under subclass 435. Subject matter having a point switch provided with a guard-rail,
which by contact with the rim of the tread of the wheel forces the
flange of the wheel away from the switch-points.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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442 | .. Tongue: |
This subclass is indented under subclass 435. Subject matter having triangular-shaped and comparatively
short pivoted single points extensively used on the sharp turnouts
of street-railways and placed in one of the gauge-rails, a fixed
point or switch mate being placed in the other rail.
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443 | ... Bed lock: |
This subclass is indented under subclass 442. Subject matter having locking devices of various kinds placed in the beds of tongue-switches for holding the point in position. | |
444 | ... Self-cleaning: |
This subclass is indented under subclass 442. Subject matter having point switches usually of the tongue
type, so designed as to automatically remove the accumulated dirt,
which tends to obstruct their motion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
435A | .. Guard |
This subclass has no definition. | |
445 | . Stub: |
This subclass is indented under subclass 415. Subject matter having switches in which the ends of the moving rails are squarely truncated. | |
446 | .. Double rail: |
This subclass is indented under subclass 445. Subject matter having stub switches composed of pairs of parallel instead of single moving rails. | |
447 | .. Anti-creep or jar: |
This subclass is indented under subclass 445. Subject matter having stub switches provided with devices for preventing the creeping of the switch or the jar of wheels passing over gaps at the stub ends of the switch-rails. | |
448 | . Lock: |
This subclass is indented under subclass 415. Subject matter having means other than portable padlocks
or tower-operated bolts which lock the switch-rails, switch-rods,
or connecting-bars in place, but do not lock parts of the switch-stand.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
449 | . Tie bars: |
This subclass is indented under subclass 415. Subject matter having rods connecting the two moving rails of a switch and determining their spacing. | |
450 | .. Adjustable: |
This subclass is indented under subclass 449. Subject matter in which the tie rods are provided with means
for adjusting the position of the switch-rails with reference to
the stock-rails.
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451 | ... Eccentric: |
This subclass is indented under subclass 450. Subject matter having tie-bars in which the adjustment is made by means of eccentrics. | |
452 | . Connecting rods: |
This subclass is indented under subclass 415. Subject matter having a rod connecting the switch or signal to the actuating stand or rod and by means of which the switch is thrown. | |
453 | . Chairs and plates: |
This subclass is indented under subclass 415. Subject matter having means designed for supporting the
moving rails of switches.
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415A | . Toy |
This subclass has no definition. | |
454 | CROSSINGS, FROGS, AND MATES: |
This subclass is indented under the class definition. Subject matter having means placed at the common point of
two or more traction-rails or opposite a tongue-switch and arranged
to permit the passage of the wheel-flanges.
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455 | . Outer-tread-supported wheel: |
This subclass is indented under subclass 454. Subject matter having crossings, frogs and mates in which
an outer rail member with riser ends is employed, upon which the
unguttered or rim portion of the wheel-tread runs, thereby obviating
the jolting due to guttered wheels.
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456 | . Tread guard rail: |
This subclass is indented under subclass 454. Subject matter having crossings, frogs, and mates provided
with a guard-rail acting on the rim of the wheel-tread, and thereby
guiding the wheel-flanges past the frog and crossing points.
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457 | . Flange-supported wheel: |
This subclass is indented under subclass 454. Subject matter having crossings which have a hard filler,
with end risers, placed at the crossing-point between the gauge
and guard rails, affording a bearing-surface upon which the flange
of the wheel runs, carrying the wheel-tread clear of the gap in
the gauge-rail.
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458 | .. Frogs: |
This subclass is indented under subclass 457. Subject matter having frogs provided with flange-bearing risers. | |
459 | . Hot filled: |
This subclass is indented under subclass 454. Subject matter having crossings, frogs, and mates whose components, often pieces of rail, are joined by hot metal, usually iron or steel, cast around them, which usually enters cavities therein, binding the entire structure, partly by bonding and partly by a welding action. | |
460 | . Central inserts: |
This subclass is indented under subclass 454. Subject matter having crossings, frogs, and mates provided with centrally-inserted pieces of manganese or other hard steel adapted especially for resisting wear and for being replaced when worn down or destroyed. | |
461 | .. Cast bound: |
This subclass is indented under subclass 460. Subject matter in which the inserts are secured in position, in whole or in part, by casting hot and comparatively soft metal (as spelter) or cement, which enters sundry cavities and on cooling secures the block in position or prevents the bolts, wedges, or other fastenings used from working loose under stress. | |
462 | . Plate or plate bolted: |
This subclass is indented under subclass 454. Subject matter having crossings, frogs, and mates in which the rail-pieces are riveted or bolted through their flanges to a foundation-plate, usually of wrought-iron. There may or may not in addition be filler-blocks and bolts through the web of the rails. | |
463 | . Bolted: |
This subclass is indented under subclass 454. Subject matter having crossings, frogs, and mates built up from rail-pieces spaced by filler-blocks and secured by bolts passing through the fillers and through the webs of the rails. | |
464 | . Solid: |
This subclass is indented under subclass 454. Subject matter having crossings, frogs, and mates of solid cast or wrought construction or those whose component parts are joined by welding, (other than cast-welding). | |
465 | . Crossings: |
This subclass is indented under subclass 454. Subject matter having means placed at the crossings of the
rails of two intersecting tracks and consisting, in their simplest
form, of four solid frogs joined together with rails to form a connected
system.
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466 | .. Street and steam: |
This subclass is indented under subclass 465. Subject matter having crossings placed at the intersection of steam with street railway tracks and in which the former have unbroken lines of rail. | |
467 | .. Chairs: |
This subclass is indented under subclass 465. Subject matter having means in the nature of rail-supports
for holding and supporting the ends of rail-pieces in building up
a crossing.
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468 | . Frogs: |
This subclass is indented under subclass 454. Subject matter having means placed at the intersection of
two gauge-rails of railway-track in order to afford flangeways for
the wheels.
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469 | .. Unbroken main: |
This subclass is indented under subclass 468. Subject matter having a frog in which the wheels are raised
and carried over the unbroken main track by means of fixed elevated
side rails or risers.
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470 | .. Clamped: |
This subclass is indented under subclass 468. Subject matter having rail frogs which have spacing-fillers whose parts are secured in position by clamps or clamps and wedges. | |
471 | .. Composite: |
This subclass is indented under subclass 468. Subject matter having frogs of composite (mostly horizontal) structure built up in various ways from pieces of wrought or cast metal other than pieces of rail. | |
472 | . Details: |
This subclass is indented under subclass 454. Subject matter having details relating to the construction of various types of crossings, frogs and mates. | |
473R | SIGNALS: |
This subclass is indented under the class definition. Subject matter having audible or visual means of communication
especially adapted and intended for directing and controlling the traffic
over and upon railways.
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473.1 | . Highway crossing: |
This subclass is indented under subclass 473. Subject matter including devices which indicate to pedestrians
or highway vehicle operators that a train is approaching a highway crossing.
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473.2 | .. Wigwag type: |
This subclass is indented under subclass 473.1. Subject matter in which the device includes an oscillating
member (e.g., swinging arm, scanning light beam).
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473.3 | . Light beam projecting: |
This subclass is indented under subclass 473. Subject matter including devices which give an indication by means of a projected beam of light. | |
474 | . Track reflectors: |
This subclass is indented under subclass 473. Subject matter having signals on the track or roadway provided
with reflectors, which reflect light from the headlight either back
to the engineer or forward, as around curves, etc., to notify an
approaching train.
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475 | . Dwarf or pot: |
This subclass is indented under subclass 473. Subject matter having "drawf" or "pot" signals, so called which are low compact signals placed at switches and used mostly in yards where switches are operated from towers. | |
476 | . Switch or switch stand: |
This subclass is indented under subclass 473. Subject matter having switch-position indicators such as
signals, lamps, and targets actuated by the movement of a switch
or switch-stand.
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477 | . Roadway, visual, and portable: |
This subclass is indented under subclass 473. Subject matter having visual signals adapted to be temporarily
placed upon or secured to the permanent way to advise approaching
trains of danger ahead.
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478 | . Enclosed: |
This subclass is indented under subclass 473. Subject matter having signals whose moving parts are for the most part enclosed or boxed in for protection from the weather-as, for example, the disk and circular-box or banjo type of signal. | |
479 | . Semaphore: |
This subclass is indented under subclass 473. Subject matter having visual signals of the well-known railway-
semaphore type--viz., a blade with parallel or but slightly-diverging edges,
pivoted upon one side of a post or mast and capable of being rotated
to a vertical, inclined, or horizontal position. They are usually
provided with signal-lamps and spectacles set with colored glasses,
corresponding to the various aspects which they can present.
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480 | .. Upper quadrant: |
This subclass is indented under subclass 479. Subject matter having semaphores which are operated in the
upper quadrant and moved upward instead of downward when passing from
horizontal to vertical position, so that deposits of ice on the
arm will increase rather than decrease the tendency to assume the
stop or danger position. They are not usually provided with counterweights.
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481 | .. Home and distant: |
This subclass is indented under subclass 479. Double semaphores on the same mast, usually operated by
one lever in succession.
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482 | .. Arms: |
This subclass is indented under subclass 479. Subject matter having semaphores in which the novelty resides in the arm or blade or in its mode of mounting. | |
483 | ... Illuminated: |
This subclass is indented under subclass 482. Subject matter having semaphores in which the novelty resides
in means for illuminating the arm or blade by either natural or
artificial light not emanating from the train.
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484 | .. Lamp and spectacles: |
This subclass is indented under subclass 479. Subject matter having semaphores with lamps or spectacles
of special structure or provided with means for holding or moving
the lamp or its parts.
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485 | .. Post mechanism: |
This subclass is indented under subclass 479. Subject matter having means located at or upon the post
for actuating, locking, or controlling the movements of the semaphore.
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486 | . Bridge warnings: |
This subclass is indented under subclass 473. Subject matter having means placed at the approach to overhead or highway bridges as a warning to brakemen on the roofs of cars that there is not sufficient clearance for safety. They are usually yielding obstructions, such as hanging cords, rods resiliently mounted, etc. | |
487 | . Torpedoes: |
This subclass is indented under subclass 473. Subject matter having means adapted to be placed on or near
the track-rails, so as to be exploded by a passing train as a warning
of danger ahead.
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488 | . Trainmens" kits: |
This subclass is indented under subclass 473. Subject matter having collections of signal devices for
the use of brakemen in protecting their trains--such as flags, lanterns,
torpedoes etc.,--fastened or otherwise kept together until needed
for use.
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473A | . Toy rail signals |
This subclass has no definition. | |
489 | MANUAL ACTUATION: |
This subclass is indented under the class definition. Subject matter having means for manually or pedally actuating
signals, switches and other movable elements.
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FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
This subclass has no definition. | |
DIG1 | RADIANT ENERGY DEVICES |
This subclass has no definition. | |
DIG2 | THERMAL SENSING DEVICES |
This subclass has no definition. | |