Means for applying sand or like material to vehicle-wheel
treads or to vehicle-tracks, such as automobile-roads or railway-rails,
or to both the wheel-treads and tracks, for the purpose of increasing
the tractive effect between such wheels and roads or rails.
Fluid Sprinkling, Spraying, and Diffusing,
subclasses 650+ for vehicles the sole purpose of which is to distribute
sand on highways for use by other vehicles, and comprising a container
for nonfluid material (sand) and means to scatter or strew the material
over an extended area.
This subclass is indented under the class definition. The sand-dispensing device is automatically operated by
the slipping or skidding of a traction-wheel or the relative slipping
of two or more traction-wheels.
This subclass is indented under the class definition. Devices in which the sand is displaced and propelled or
after gravity release is propelled through the delivery-pipe by
either air, steam, water, or engine exhaust-gases.
This subclass is indented under subclass 3. Supplemental attachments for fluid sand-delivery apparatus,
so that in case of absence of or failure of fluid-pressure or at
will a gravity sand-feed may be thrown into operation.
This subclass is indented under subclass 7. The sand-trap is located either in the side walls or below
the floor of the sand-dome and is swung in a vertical plane to clear
the opening to the discharge-pipe for gravity feed.
This subclass is indented under subclass 3. Service comprising a retaining obstruction or horizontal
passage to which the sand is delivered for engagement thereat by
the air, steam, water, engine exhaust gas or other fluid. The fluid
moves the sand over the obstruction or along the passage into the
This subclass is indented under subclass 11.1. Device having two openings or nozzles through which the
fluid flows to engage and move the sand to or through the delivery
Note. A service must have two openings or nozzles associated
with a single, common delivery pipe for inclusion in this subclass.
Note. In a device of this subclass, the fluid can flow from
the two openings or nozzles concurrently or at different times.
Devices having a particular fluid delivery nozzle in combination
with a cleanout blast nozzle or stirring nozzle are included in
Note. A device in which fluid flowing from one opening or
nozzle induces additional flow from a second opening or nozzle is
included in this subclass.
This subclass is indented under subclass 11.1. Device wherein significance is attributed to means to change
the character of a flowing fluid prior to its engagement with the
Note. The character of a flowing fluid may be changed by
altering the flow rate, the location of the flow, etc.
Note. A device comprising a mere valve or control means located
upstream of the trap which changes the character of the fluid flow
is not included in this subclass unless particular structure of
the valve or control means is provided or unless particular valve
or control means operation or structure is recited.
for fluid delivery devices having a sand-trap and
multiple fluid inlets for propelling sand to or though a delivery
pipe, particularly those devices wherein fluid flow from the two
inlets is adjusted interdependently.
This subclass is indented under subclass 3. Special forms of ports in blast-nozzles to impart a special
form to the air-jet or to prevent sand from backing up into the
blast-nozzle and screens or strainers for preventing the sand from
backing up through the blast-nozzles.
This subclass is indented under the class definition. The movement of the brake or engineer"s valve handle
at a determined point in its movement engages an abutment, which
operates the control-valve of fluid sand-delivery apparatus or the
sand-feeding device in a gravity sand apparatus or opens a port
to control the sand-feeding device.
This subclass is indented under the class definition. The movement of some valve other than the engineer"s
brake-valve or of some movable member of a brake system operates the
control-valve of a fluid-operated sanding device or a sand-feeding
device in a gravity sanding apparatus.
This subclass is indented under the class definition. An air or steam jet discharges into the top of the hopper
for effecting pressure on the mass of sand or discharges into the
mass of sand for the purposes of heating, drying, or breaking up
caked sand. This subclass does not include devices for blowing
sand out of the hopper.
This subclass is indented under the class definition. Devices for releasing the sand so that it may fall by gravity
to the wheel or track. The term "sand-feeders" is
also used to include devices for stirring up sand in the hoppers
preliminary to feeding it out.
This subclass is indented under subclass 25. The sand releasing and stirring members have an angular
to-and-fro movement about axes at right angles to the plane of rotation.
The releasing members are hinged doors, cylindrical segments, recessed
or smooth, or of the perforated-plug-valve type.
This subclass is indented under subclass 28. The pipes for delivering sand to the track are hinged adjacent
the hoppers, are flexible, or are bodily movable, so that when the
pipes are moved or bent the sand-discharge is cut off.
This subclass is indented under subclass 25. Rotary plates and cylindrical members adapted to rotate
either continuously in the same direction or through a complete
revolution. This subclass also includes centrifugal sowers.
This subclass is indented under subclass 42. A current of air or steam is blown through the delivery-pipe.
In case of a delivery-pipe in fluid sanding system the cleaning-current
is additional to the sand, air, or steam blast for moving the sand.
This subclass is indented under subclass 41. Flexible and articulated delivery-pipes designed to accommodate
relative movement between traction-wheel frames and other parts of
the vehicle due to relative vertical movements of such parts or
to relative angular movement when rounding curves.
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