Electric space discharge devices having at least one electrode
formed of and/or containing a solid material which is consumed
during the operation of the discharge device, and such devices in
combination with a current supply system therefor.
(1)
Note. Most of the discharge devices in this class are provided
with means to feed the electrodes of the discharge device together so
as to compensate for the consumption of the consumable electrode
and to maintain the proper distance for the space discharge between
the electrode, the feeding being intermittent or continuous.
SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
Patents claiming an "arc discharge device" or
an "arc lamp", or arc discharge device circuits,
or arc lamp circuits, are not classified in this class unless the
claims are limited by claimed subject matter to discharge devices of
the consumable electrode type. For arc lamps, arc discharge devices,
and methods and apparatus for utilizing arc discharge devices for
treating materials, objects or spaces, see "SEARCH CLASS" below.
This class does not provide for electric space discharge devices
with mechanisms for bringing together and separating the electrodes
of a discharge device merely to initiate the discharge unless the
claims are limited by claimed subject matter to discharge device
of the consumable electrode type. For discharge devices, per se, electrodes
together and then separating them so as to initiate the discharge,
search Class 313, Electric Lamp and Discharge Devices, subclasses
146+. Search Class 315, Electric Lamp and Discharge Devices:
Systems, subclasses 327+ for systems where the discharge
device is not a consumable electrode discharge device and the system
includes means to bring the electrodes together and then to separate
them to initiate the discharge.
This class does not provide for electrical systems including
a consumable electrode discharge device and another device which
is not a discharge device or lamp, such systems being classified
in Class 307, Electrical Transmission or Interconnection Systems,
subclasses 155+, or in the class which provides for the
particular art to which they relate, except that this class does
provide in subclasses 13 and 14 for systems wherein an impedance
is substituted in the circuit for the consumable electrode device
when the consumable electrode device is removed from the circuit,
and provides in subclasses 115 and 135 for systems wherein an impedance
is included in the circuit of the discharge device when the sole
function of the impedance is to regulate the current flow to the
consumable electrode discharge device.
This class does not take methods or apparatus for utilizing
consumable electrode space discharge devices for treating materials
or objects, or for apparatus or methods where the consumable electrode
discharge device is utilized to generate ray energy, such as ultra
violet light, for treating materials or objects. For such methods
and apparatus, see "SEARCH CLASS" below. This
class does take all patents claiming merely means for feeding the
consumable electrode to compensate for the consumption of the electrode
even though the electrode is disclosed as being for a particular
art device, such as an electric furnace or arc welding or heating
device. Merely naming one of the electrodes as a particular material
or object broadly defined, such as "the work to be welded
and/or heated," will not exclude the patent from
this class provided the claims are directly only to the feeding
means for the consumable electrode.
This class does not take electrical systems which are provided
with a consumable electrode discharge device for controlling and/or
modifying the current and/or potential supplied to a load
device other than a consumable electrode discharge device. For such
systems search the appropriate electrical system class.
This class does not include illumination devices provided
with consumable electrode discharge device lamps. Such illumination
devices are classified in Class 362, Illumination; see "search
class" below for the subclasses in Class 362 which provide
for such illumination devices.
This class, except in subclass 60, does not provide for electrodes,
per se, for consumable electrode discharge devices nor for the electrode
holders, clamps, or electrodes where the structure claimed is not
limited by claimed subject matter to use with consumable electrode discharge
devices provided with means for feeding the electrodes to compensate
for the consumption of the electrode. Class 373, Industrial Electric
Heating Furnaces, subclasses 67+ and 88+, provides
for arc furnace electrodes, Class 219, Electric Heating, subclasses 121.11+,
for arc welding electrodes, and Class 313, Electric Lamp and Discharge
Devices, subclasses 326+ for miscellaneous discharge devices
electrode structure. See subclass 357 for rod-like electrodes of
the type usually used with consumable electrode discharge devices. Note
that Class 252, subclass 500, and the classes specified in the Notes
thereto, provides for the materials for use for making discharge
device electrodes and for discharge device electrodes which are
defined only by the material of which they are composed. See section
XI, 3 of the class definition of Class 313 for the classification of
electrodes for discharge devices which are provided with electrical
connector structure.
For electric systems for supplying electric current and/or
potential to electric lamps and discharge devices other than consumable
electrode discharge devices, search the classes in References to
Other Classes, below.
Electric Heating,
subclasses 50+ , especially 121.11+, for electric arc
welding and heating apparatus provided with consumable electrodes.
Class 219 provides for all patents which are limited by claimed
subject matter to electric arc welding and/or heating,
including, for example, such patents as claim means for holding,
handling, feeding, and/or moving the work which is to be
welded and/or heated. Class 219 also provides for all hand
held tools for holding an electrode, such as are used in manual
welding.
Advancing Material of Indeterminate Length, appropriate subclasses for methods of, and apparatus
for, feeding material without utilizing the leading or trailing
ends to effect movement of the material.
Radiant Energy,
subclasses 281+ for methods and apparatus for the ionic separation
or analysis of materials wherein the material maybe ionized by subjecting
the material to electronic or ionic bombardment, subclass 306 for method
and apparatus to inspect solid or liquid materials by charged particles,
subclass 324 for methods and apparatus to corona irradiate materials,
subclasses 440.11+ for object supports to irradiate objects
by charged particles in a vacuum and subclasses 492.1+ to
irradiate objects or materials generally.
Electric Lamp and Discharge Devices, appropriate subclasses for arc lamps and electric space
discharge devices other than the consumable electrode type. Class
313,
subclasses 238 , 243, 267 and 268 provide for the supporting and
spacing structure for electrodes for arc lamps which are not within
a sealed envelope. Subclass 325 of Class 313 also contains many patents
for arc discharge devices which are not within a sealed casing or
envelope. See Lines With Other Classes above for the subclasses
in class 313 which provide for discharge devices with movable electrodes,
and (6) note above for the subclasses in Class 313 which provide for
the electrodes for discharge devices.
Electric Lamp and Discharge Devices: Systems, appropriate subclasses, for all such supply systems
for electric lamp and for such supply systems for electric space
discharger devices of the gas or vapor ionization type, including
arc and spark devices.
Miscellaneous Active Electrical Nonlinear Devices,
Circuits, and Systems, appropriate subclasses for miscellaneous electric
space discharge systems not otherwise classified.
Oscillators,
subclasses 78 and 126 for oscillator systems utilizing gaseous
space discharge devices, particularly subclass 127, indented under
subclass 126, wherein the space discharge device is of the spark
or open arc type.
Illumination, appropriate subclasses, for arc lamps provided with means
to modify and/or distribute the illumination, and/or
with protective means, such as casings, globes, or guards, and for
the supports and holders for arc lamps. Particular reference is
made to the following subclasses:
subclass 20 for automatic substitution of light sources, one
of which may be of the carbon arc type. Subclass 210 for plural, carbon
arc-type light sources. Subclass 228 for plural light sources, one
of which may be of the carbon arc type. Subclasses 261+ for
carbon arc-type light source combined with a light modifier. Subclasses
362+ for housings for carbon arc-type light sources. Subclass
376 for guard means for carbon arc-type light sources. Subclass
416 for arc lamp hangers.
AUTOMATIC SUBSTITUTION OF DISCHARGE DEVICE, ELECTRODE OR LAMP
This subclass is indented under the class definition. Subject matter having (a) two or more discharge devices,
at least one of which is of the consumable electrode type, or (b)
a consumable electrode device and a lamp, or (c) a consumable electrode
discharge device having a plurality of cathodes and/or
anodes, and provided with means for operating one of the discharge
devices, lamps, or one of the cathodes and/or anodes and
its corresponding electrode while the other discharge device, lamp
or electrode is maintained in a nonoperative condition until the
first operated device or electrode fails, either through consumption
of the electrode, or some other condition rendering it inoperative, and
having means provided which operate automatically in response to
either the failure of the first operated device or electrodes, or
the consumption of the electrode in the consumable electrode device,
to place the other device or electrodes in operative condition whereby such
other device or electrodes are substituted for the first operated
device or electrodes.
(1)
Note. The device or electrodes which are substituted for the
first operated device or electrodes need not be in the same electrical
circuit, and the substitution may be made for the purpose of maintaining
a discharge, or maintaining the light, or maintaining a load in
the circuit.
for discharge devices and systems under the class
definition provided with a signaling means, or alarm means to indicate
some condition in the discharge device.
and indented subclasses, for discharge devices and
systems under the class definition provided with automatically operating
means to complete an electrical circuit in shunt about the discharge
device or some part thereof, and/or to open the electric
circuit of the discharge device or some part thereof, such means
being automatically operated in response to some condition of the
discharge device which prevents further operation of the discharge
device in the normal manner.
for discharge devices under the class definition
and the current supply systems therefor wherein the discharge device
is provided with at least two principal electrodes and an auxiliary starting
electrode, the discharge being initiated between one of the principal electrodes
and the starting electrode, the discharge being then transferred
to the other principal electrode and maintained only between the
principal electrodes.
Electric Lamp and Discharge Devices,
subclass 236 , for miscellaneous space discharge devices which
are provided with a spare electrode to be used in place of a defective
electrode, and subclass 237 for miscellaneous discharge devices
which are especially designed so that a defective electrode may
be replaced or especially designed to be readily taken apart so that
they may be repaired.
Electric Lamp and Discharge Devices: Systems,
subclasses 87 and subclass 88, for miscellaneous current supply
systems for electric lamps and/or electric space discharge
devices other than consumable electrode discharge devices, the system
being provided with automatically operated means for substituting
another lamp, discharge device, or electrode when the first operated
lamp, discharge device, or electrode fails to operate properly.
Illumination,
subclass 20 , for lanterns designed to use a plurality of light sources,
one of which may be an arc lamp, and provided with means for automatically
substituting another light source in event the first operated light
source is destroyed or extinguished.
This subclass is indented under subclass 1. Subject matter having an electric switch which is automatically
operated in response to the failure of the first operated discharge
device, lamp or electrodes to complete the circuit to the second
operated device or electrodes.
16 and 17 and indented subclasses, for discharge
devices, and systems under the class definition provided with an automatically
operated electric switch means for completing an electrical circuit
in shunt about the discharge device or some part thereof, and/or
to open the electric circuit of the discharge device or some part
thereof, such switch means being automatically operated in response
to some condition of the discharge device which prevents further
normal operation of the discharge device.
Electricity: Circuit Makers and Breakers, appropriate subclasses, for electric switches of general
application especially
subclass 47 , for limit switches.
Electric Lamp and Discharge Devices: Systems,
subclass 93 , for miscellaneous electric lamp and/or electric
space discharge device systems which are provided with an automatically
operating electric switch for substituting another lamp, discharge device,
or electrode when the first operated lamp, discharge device or electrode
fails to operate properly.
This subclass is indented under subclass 1. Subject matter having (a) two or more consumable electrode
discharge devices, or (b) a consumable electrode discharge device
having a plurality of cathodes and/or anodes included in the
same circuit, wherein the separating mechanism for the movable electrodes
operates to separate the movable electrodes from the other electrodes
either (a) simultaneously, or (b) one of the movable electrodes
is separated from its other electrode an instant before the other
movable electrode is separated from its other electrode, so that
the discharge is maintained only between one of the movable electrodes
and the other electrode due to the difference in impedance in the
two branch circuits containing the respective discharge devices
or electrodes.
This subclass is indented under subclass 1. Subject matter wherein a consumable electrode discharge
device is provided with a plurality of cathodes and/or
anodes, two or more of the electrodes being movable, the movable
electrodes being operated by means of the same motive power means.
(1)
Note. In most of the devices in this subclass, one of the
movable electrodes is held stationary while the first operated electrode
is fed to the discharge, and means are provided for automatically releasing
the stationary electrode so that it may be actuated by the feed
regulating mechanism when the first operated electrode is consumed
or fails to operate.
(2)
Note. Continue the search in subclass 3 of this class.
for miscellaneous discharge devices and systems
under the class definition wherein the discharge device is provided
with two or more anodes, and has two or more movable electrodes connected
together by mechanical means so that these movable electrodes are
moved by the same motive power means.
This subclass is indented under subclass 4. Subject matter provided with a receptacle for containing
and storing at least one electrode in addition to the electrode
which is to be first operated, with means for delivering an electrode
from the storage container to the proper position in the discharge
device to be used as the electrode for the discharge device when
the electrode which has therebefore been maintaining the discharge
has been wholly or partially consumed.
Article Dispensing, appropriate subclasses for article dispensing devices not
otherwise provided for, including devices for dispensing cylindrical
articles such as rod shaped electrodes.
Supports: Cabinet Structure,
subclasses 45 and 72 for article retaining magazines having article
removal facilitating means, for holding cylindrical articles such
as rod-shaped electrodes and making them available for removal therefrom.
This subclass is indented under subclass 4. Subject matter wherein an electro-responsive device, which
is automatically operated in response to the failure of the first
operated electrode, is used to place the second operated electrode
in operative condition.
(1)
Note. Continue the search in subclass 2 of this class.
This subclass is indented under the class definition. Subject matter wherein (a) two or more consumable electrode
discharge devices, or (b) a consumable electrode discharge device
and another type, of electric space discharge device or lamp are
claimed.
(1)
Note. To be classified in this subclass or the indented subclasses
as plural consumable electrode-type discharge devices there must
be provided a cathode, an anode, and a separate electrode separating
and feeding mechanism for each consumable electrode discharge device,
although the electrode separating and/or feeding mechanism
of one device, may be influenced by the voltage and/or current
flow in the other device. The plurality of discharge devices may
be mounted in a single frame.
Where there are a plurality of cathodes and/or anodes,
and only a single electrode cooperating with the plural cathodes
or anodes, the patent is classified as a single device in subclass
36 and indented subclasses of this class, even though there is a
plurality of movable electrodes each of which is actuated by a separate
electrode feed regulating mechanism.
(2)
Note. For electrical systems for supplying electric current
to two or more lamps or discharge devices other than consumable
electrode devices, search classes in the Search Notes below for
Electric Lamp and Discharge Devices and for Miscellaneous Active
Electrical Nonlinear Devices:
and indented subclasses, for plural consumable electrode
discharge devices, or for a consumable electrode discharge device
and another type of discharge device or lamp, provided with means
for operating one of the discharge devices or lamps while the other
device or lamp is maintained in nonoperative condition until the
first operated device or lamp fails and then automatically substituting
the second device or lamp for the first operated device or lamp.
Electric Lamp and Discharge Devices,
subclass 1 , for miscellaneous structures which include either
a plurality of lamps or a plurality of discharge devices integrally
combined in a single unitary structure or which include a discharge
device and an electric lamp integrally combined in a single unitary
structure.
Electric Lamp and Discharge Devices: Systems,
subclass 312 and the subclasses specified in the notes to the
definition of those subclasses, for all such supply systems for
a plurality of electric lamps and for such supply systems for a
plurality of electric space discharge devices of the gas or vapor
ionization type, note especially indented subclass 324, where there are
a plurality of discharge devices.
Miscellaneous Active Electrical Nonlinear Devices,
Circuits, and Systems,
subclasses 530+ for miscellaneous circuits with specific source
of supply or bias voltage.
Illumination, appropriate subclasses, especially
subclass 210 for plural carbon arc-type light sources, and subclasses
228+ for plural light sources, one of which may be of the
carbon arc type.
This subclass is indented under subclass 7. Subject matter wherein two or more of the discharge devices
are connected in series relation in the circuit.
for discharge devices and systems under the class
definition wherein the discharge device is provided with three or
more electrodes connected in electrical series relation.
Radiant Energy, and appropriate subclasses, for miscellaneous systems
not otherwise classified, which include a plurality of series connected
discharge devices.
Electric Lamp and Discharge Devices: Systems,
subclass 179 and indented subclasses, subclass 185 and indented
subclasses, and the subclasses specified in the notes to the definitions
of those subclasses, for miscellaneous systems for supplying electric
current to series connected electric lamps and/or electric
space discharge devices of the gas or vapor ionization type.
This subclass is indented under the class definition. Subject matter provided with signaling means, or indicator
means, or alarm means operated by some part of the consumable electrode
discharge device or the electrical circuits therefor to indicate
some condition in the discharge device.
(1)
Note. The condition indicated may be the amount of consumption
of the electrodes or the time that the discharge device has been
operated, or the degree of heat of some part of the discharge device,
or any other desired condition.
and indented subclasses, for systems including (1)
a consumable electrode discharge device and another device or lamp,
or (2) a consumable electrode discharge device having a plurality
of cathodes and/or anodes, and provided with means for
automatically substituting for (a) the consumable electrode discharge
device the other discharge device or lamp, or (b) the first operated
electrode another electrode, when the first operated device or electrode
fails to maintain the discharge or is extinguished.
and indented subclasses, for discharge devices and
systems under the class definition provided with automatically operating
means to complete an electrical circuit in shunt about the discharge
device or some part thereof, and/or to open the electric
circuit of the discharge device or some part thereof, such means
being automatically operated in response to some condition of the
discharge device which prevents further operation of the discharge
device in the normal manner.
Electric Lamp and Discharge Devices: Systems,
subclass 120 and subclass 129, and its indented subclasses,
for miscellaneous systems for supplying electric current to electric lamps
and/or electric space discharge devices of the gas or vapor
ionization type, the system including signal means, indicator means,
or alarm means for indicating some condition affecting the operation
of the system.
This subclass is indented under the class definition. Subject matter provided with means to complete an electrical
in shunt about the discharge device or some part thereof, and/or
to open the electric circuit of the discharge device or some part
thereof, such means being automatically operated (a) when the electrodes have
been consumed, or (b) when the feed regulating mechanism fails to
feed the feeding electrode, or (c) when an electrode is broken and/or
becomes nonconductive, or (d) when the supply voltage becomes either
too high or too low for the proper operation of the discharge device,
or (e) after the electrodes have been in operation for a predetermined
time.
(1)
Note. This subclass includes discharge devices having means
on the electrode and/or the electrode holding rod or mechanism
for preventing further feeding of the feeding electrode when the feeding
electrode has been consumed to a predetermined extent thereby opening the
electrical circuit by keeping the electrodes too far apart to maintain
an electrical discharge between them.
(2)
Note. In many of the devices in this subclass the shunt circuit
is placed about only the regulating mechanism, such as the magnet
coils, or only the circuit to the regulating mechanism is open circuited,
the circuit to the electrodes being maintained, the electrodes being
permitted either to come into contact and thereby establish a short
circuit, or to maintain the discharge until the electrodes have
been consumed to such an extent that the electrodes are spaced too far
apart to maintain the discharge between them, thereby opening the
circuit through the discharge device.
and indented subclasses, for systems including (1)
a consumable electrode discharge device and another electric discharge
device or lamp, or (2) a consumable electrode discharge device having
a plurality of cathodes and/or anodes, and provided with
means for automatically substituting for (a) the consumable electrode
discharge device the other discharge device or lamp, or (b) the
first operated electrode another electrode, when the first operated
device or electrode fails to maintain the discharge or is extinguished.
for discharge devices and systems under the class
definition provided with signaling means, indicating means and/or
alarm means operated by some means responsive to a condition of
the discharge device to indicate such condition.
Electric Lamp and Discharge Devices: Systems,
subclass 65 and 119, and its indented subclasses for miscellaneous
systems for supplying electric current to electric lamps and/or
electric space discharge devices of the gas or vapor ionization
type, the system being provided with automatically operated shunt-circuit
closing or cut-out means for the lamp or discharge device.
This subclass is indented under subclass 10. Subject matter wherein an electrical circuit in shunt is
completed about the discharge device or some part thereof.
(1)
Note. In many of the devices in this subclass the shunt circuit
is placed about only the regulating mechanism, such as the magnet
coils.
(2)
Note. The shunt circuit is usually of lower resistance than
the resistance of the discharge device and/or the part around
which it is completed and is often a "short circuit",
but it may be of higher resistance.
Electric Lamp and Discharge Devices: Systems,
subclass 75 , and subclass 125 and indented subclass, for miscellaneous
systems for supplying electric current to electric lamps and/or
electric space discharge devices or the gas or vapor ionization type,
the system being provided with automatically operated shunt-circuit closing
means for the lamp or discharge device.
This subclass is indented under subclass 11. Subject matter having the feed regulating mechanism operated
and/or controlled by electromagnetic means, the coil of
one of the electromagnets, of the feed regulating mechanism being
included in the shunt circuit when it is completed.
This subclass is indented under subclass 11. Subject matter provided with an electrical impedance in
the shunt circuit.
(1)
Note. This subclass includes arrangements wherein an electroresponsive switch,
such as an electromagnetic or thermostatic switch, is included in
the shunt circuit, and the switch actuating means, such as the coil
or the heater for the thermostat, is included in the shunt circuit
so as to hold the switch in operated condition as long as the supply
voltage is maintained.
(2)
Note. Continue the search in subclass 12 of this class.
3, 4 and 6, for systems including (1) a consumable
electrode discharge device and another electric discharge device
or lamp, or (2) a consumable electric discharge device having a
plurality of cathodes and/or anodes, and provided with
means for automatically substituting for (a) the consumable electrode
discharge device the other discharge device or lamp, or (b) for
the first operated electrode another electrode, when the first operated device
or electrode fails to maintain the discharge or is extinguished,
the substituted device or electrode being placed in shunt to the
first operated device or electrode.
This subclass is indented under subclass 13. Subject matter having the feed regulating mechanism operated
by electro-responsive means, such as an electromagnet, and having the
switch which completes the shunt circuit actuated by the movement
of the feed regulating mechanism.
(1)
Note. Continue the search in subclass 12 of this class.
(2)
Note. In most of the devices in this subclass, the feed regulating
mechanism is given an abnormal movement when the electrodes are
either consumed or fail to feed, and the abnormal movement of the feed
regulating mechanism is utilized to operate the shunt circuit completing switch
to its circuit completing position.
(3)
Note. This subclass does not include discharge devices having
the switch operated by means of a cam, projection, detent or other
means carried by the electrode rod, or electrode supporting means,
or some other part of the discharge device which moves in relation
to the movement of the electrode so that the switch is operated
only when the electrode has been moved to a predetermined position.
Discharge devices having only this type of shunt switch operation
to complete the circuit through the shunt impedance are in subclass
13.
This subclass is indented under subclass 11. Subject matter wherein the switch which completes the shunt
circuit is an electroresponsive switch operated by means of voltage
and/or current changes in the circuit of the discharge device.
(1)
Note. Continue the search in subclasses 13 and 14 of this
class.
(2)
Note. This subclass does not include discharge devices having
the switch operated by means of a cam, projection, detent or other
means carried by the electrode rod or electrode supporting means,
or some other part of the discharge device which moves in relation
to the movement of the electrode, so that the switch is operated
only when the electrode has been moved to a predetermined position.
Discharge devices having only this type of shunt switch operation
are in subclass 11 or in indented subclasses 12 and 13.
This subclass is indented under subclass 15. Subject matter having the feed regulating mechanism operated
by the electro-responsive means, such as an electromagnet, and having the
shunt circuit switch actuated by the movement of the feed regulating
mechanism.
(1)
Note. Continue the search in subclasses 12 and 14 of this
class.
(2)
Note. In most of the devices in this subclass, the feed regulating
mechanism is given an abnormal movement when the electrodes are
either consumed or fail to feed, and this abnormal movement is utilized
to operate the shunt circuit switch.
for systems including (1) a consumable electrode
discharge device and another electric discharge device or lamp,
or (2) a consumable electrode discharge device having a plurality
of cathodes and/or anodes, and provided with automatically
operated electric switch means for substituting for (a) the consumable
electrode discharge device the other discharge device or lamp, or
(b) the first operated electrode another electrode, when the first operated
device fails to maintain the discharge or is extinguished.
Electric Lamp and Discharge Devices: Systems,
subclass 74 and indented subclass and subclass 127 and indented
subclass, for miscellaneous systems for supplying electric current
to electric lamps and/or electric space discharge devices
of the gas or vapor ionization type, the system being provided with
an automatically operated electric switch for completing a shunt
circuit about or opening, the circuit of the lamp or discharge device.
This subclass is indented under subclass 17. Subject matter wherein the switch is an electroresponsive
switch operated by means of voltage and/or current changes
in the circuit of the discharge device.
(1)
Note. Continue the search in subclasses 12, 13, 14, 15 and
16 of this class.
This subclass is indented under subclass 18. Subject matter having the feed regulating mechanism operated
by electro-responsive means, such as an electromagnet, and having the
switch actuated by the movement of the feed regulating mechanism.
(1)
Note. Continue the search in subclasses 12, 14 and 16 of this
class.
(2)
Note. In most of the devices in this subclass, the feed regulating
mechanism is given an abnormal movement when the electrodes are
either consumed or fail to feed, and the abnormal movement is utilized
to operate the switch.
(3)
Note. This subclass does not include discharge devices having
the switch operated by means of a cam, projection, detent or other
means carried by the electrode rod or electrode supporting means,
or some other part of the discharge device which moves in relation
to the movement of the electrode, so that the switch is operated
only when the electrode has been moved to a predetermined position.
Discharge devices having only this type of switch operation are in
subclass 17.
This subclass is indented under the class definition. Subject matter provided with means for deflecting the electric
discharge which is formed between the electrodes from the path the
discharge would normally occupy in the absence of the deflecting
means.
(1)
Note. In most of the patents in this subclass an electromagnet
is positioned adjacent the discharge area between the electrodes,
and the magnetic lines of force of the electromagnet cause the discharge
to be deflected from the path the discharge would occupy in the
absence of the electromagnet, but this subclass also includes patents
wherein the deflecting means is means for directing a jet of gas
towards the discharge, or other means for deflecting the discharge.
Electric Lamp and Discharge Devices,
subclass 153 , for miscellaneous discharge devices which are
provided with an electromagnet for deflecting the space discharge,
and subclasses 231.01+ for miscellaneous discharge devices
which are provided with means for directing a jet of fluent material
towards the discharge for deflecting the space discharge.
Electric Lamp and Discharge Devices: Systems, for miscellaneous systems for supplying electric current and/or
potential to electric space discharge devices including electric space
discharge lamps, the discharge device being provided with means
for deflecting the discharge from the path it would normally occupy,
subclasses 111.01+ , where the deflecting means is a jet of gas or
other fluent material, subclass 267 and subclass 344, where the
deflecting means is an electromagnet.
This subclass is indented under the class definition. Subject matter provided with means to supply a material
to the discharge area between the electrodes, the material being
either a fluent material and/or designed to be converted
to a fluent material by the heat of the discharge.
(1)
Note. The material may be a material (a) which is consumed
by combustion in the discharge and/or (b) which is heated
by the discharge and which converts such heat into radiant energy
rays such as light, and/or (c) to facilitate the flow of discharge
current between the electrodes, and/or (d) which is a flux,
and/or (e) to retard oxidation or combustion.
(2)
Note. This subclass includes patents wherein a material is
placed about or in contact with the movable electrode so as to wholly
or partially cover the electrode, as a coating, as it is fed to
the discharge. Search Class 252, Compositions, subclass 500, for
the coating compositions for use on the electrodes of consumable
electrode discharge devices, Class 313, Electric Lamp and Discharge Devices,
subclass 354 for cored rod electrodes (e.g., "carbons")
and subclass 355 for the miscellaneous electrode structures which
have a coating thereon, and Class 428, Stock Material or Miscellaneous
Articles, subclass 375 for electrodes for arc discharge devices
which involve non electrical structure and are generally merely
a base (e.g., rod) with at least one coating thereon.
(3)
Note. This subclass does not include patents wherein the only
material to be supplied to the discharge is the material of the
electrodes, such as consumable electrodes discharge devices having
electrodes containing flaming and/or luminous salts. Such
consumable electrode devices are classified on the type of discharge
device and/or the type of feeding mechanism used to regulate
the feed of the electrodes.
(4)
Note. Compare this subclass and subclass 25 of this class.
Search Class 252, Subclass 500 and the classes specified in the
Notes thereto for the composition of electrodes which contain flaming
and/or luminous materials. Also see (2) Note above.
for consumable electrode discharge devices provided
with means for directing a jet of gas towards the discharge for
deflecting the discharge from its normal path.
for consumable electrode discharge devices provided
with means to transfer the electric current from the lead wires
to the movable electrode, including such transfer devices used with
electrodes having a covering of nonconducting material.
Electric Heating,
subclass 50 , especially 121.11+, for electric welding and
heating with feeding of material to be welded or heated into the
discharge zone. Note also subclass 72 where a different material,
such as slag or a gas, is fed to the weld or heating zone.
Electric Lamp and Discharge Devices,
subclasses 231.01+ , for miscellaneous discharge devices which are
provided with means to supply a fluent material to the discharge
space. Also see (2) Note above.
Industrial Electric Heating Furnaces,
subclasses 79+ , for electric furnaces provided with means for
feeding the material to be treated into the discharge area.
Electric Lamp and Discharge Devices: Systems,
subclasses 111.01+ , for miscellaneous systems for supplying electric
current and/or potential to electric space discharge devices
of the gas or vapor ionization type, including space discharge lamps,
the discharge device being provided with means to supply a fluent
material to the discharge space.
WITH ELECTRODE TIP CLEANER OR FILM-PUNCTURING MEANS
This subclass is indented under the class definition. Subject matter provided with means operated by the discharge
device mechanism to remove and/or to penetrate deposits
of electrically nonconductive material on the discharge end of one
of the electrodes so that good electrical contact can be made between
the discharge electrodes whereby the discharge can be more easily
initiated between the electrodes when they are brought into contact
with each other.
for consumable electrode discharge devices provided
with means for feeding an auxiliary material to the discharge area
between the electrodes for the purpose of cleaning the electrodes.
for consumable electrode discharge devices having
two principal discharge electrodes and an auxiliary electrode designed
to initiate a discharge between itself and one of the principal
electrodes, the auxiliary electrode being placed with respect to the
principal electrode so that the discharge is initiated at a part
of the principal electrode which is not covered with a nonconductive
deposit, the discharge being shifted to the principal electrodes
when the nonconducting deposit has been heated and rendered conducting.
This subclass is indented under subclass 23. Subject matter of the type having means for feeding the
electrodes into contact with each other and then separating the
electrodes to initiate the discharge, and provided with means by
which (if the electrodes are not brought into contact electrically,
even though they may be in physical contact, so that the discharge
cannot be initiated) the electrodes are repeatedly separated and
fed towards each other until the obstruction to the flow of current
between the electrodes is removed from the space between the electrodes.
(1)
Note. Discharge devices wherein the electrodes are manually
moved, and which may have the electrodes repeatedly contacted by
operation of the manual moving means, are not included in this subclass
but are in subclasses 57 and 58 of this class.
This subclass is indented under the class definition. Subject matter provided with a device known in the art as
an economizer which is placed in proximity to the discharge end
of at least one of the electrodes.
(1)
Note. An economizer may be defined for the purpose of classification
in this subclass as (a) a mass of refractory material placed near
the discharge end of at least one of the electrodes, usually surrounding
the discharge end of the electrode, and designed to receive heat
from the electrode and to either return the heat to the electrode
or to convert the heat into radiant energy rays, such as light,
and/or (b) a body, usually cup-shaped, placed around the
discharge end of one of the electrodes and designed to retard the flow
of fumes from the electrodes so as to either conserve the heat of
the electrode and/or to facilitate complete combustion
of the combustible gases in the fumes.
WITH VENTILATOR, FUME FLOW SHIELD, FUME CONDENSER AND/OR TEMPERATURE MODIFYING MEANS
This subclass is indented under the class definition. Subject matter wherein the discharge device is provided
with (a) means to direct and/or circulate a gas or vapor,
which may be air, in contact with at least part of the discharge device
structure such as the electrode and/or electrode moving
mechanism, and/or (b) means to prevent the gaseous fumes
given off by the discharge from flowing into contact with the electrode
moving mechanism, and/or (c) means to cool the gaseous
fumes given off by the discharge so as to cause condensation of
the more readily condensable constituents of the fumes, and/or
(d) means for cooling and/or heating at least part of the
discharge structure, such heating means being in addition to the heat
generated by the discharge between the electrodes and/or
(e) means to obstruct or to facilitate the flow of heated generated
by the electrodes to other parts of the discharge device structure.
(1)
Note. Continue the search in subclass 25 of this class.
Electric Lamp and Discharge Devices,
subclass 11 , for miscellaneous discharge devices which are
provided with means for cooling and/or heating at least
part of the discharge device structure, and subclasses 231.01+ for discharge
devices of other than the consumable electrode types which are provided
with a gas or vapor flow directing means.
Electric Lamp and Discharge Devices: Systems,
subclass 112 , for miscellaneous systems for supplying current
and/or potential to electric lamps and electric space discharge devices
of the gas or vapor ionization type, the lamp or discharge device being
provided with heating and/or cooling means for the lamp
or discharge device structure.
This subclass is indented under subclass 26. Subject matter having such means movable mounted and having
the mounting means connected to the electrode and/or the
electrode moving mechanism so as to be moved in proportion to the
movement of the electrode to maintain such means in spaced relation
to the discharge end of the movable electrode.
This subclass is indented under subclass 26. Discharged devices provided with a ventilator, fume director
and/or a fume condenser.
(1)
Note. A mere baffle to prevent the fumes from flowing into
contact with the electrode moving mechanism is not considered to
be a fume director within the meaning of the definition of this
subclass, but a conduit to carry the fumes and to prevent the circulation
of the fumes around the electrode moving mechanism is considered
to be a fume director within the meaning of the definition of this
subclass.
(2)
Note. This subclass includes casings placed only about the
electrode moving mechanism and provided with ventilating means,
but where the casing is an enclosure for the entire discharge device, see
the Search Notes below.
Electric Lamp and Discharge Devices,
subclass 20 , 33 and 34 for discharge devices which are inclosed
within a sealed envelope and which are provided with an internal
temperature modifying baffle or a condensing chamber or surface
to cool the vapors within the envelope.
This subclass is indented under subclass 26. Subject matter wherein the means to modify the temperature
of at least a part of the discharge device structure, such as the
electrode and/or the electrode holder, includes means for circulating
a heat transfer liquid in contact with the part which is to have
its temperature modified.
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