US2088924A - Electric signaling or indicating means - Google Patents

Electric signaling or indicating means Download PDF

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Publication number
US2088924A
US2088924A US1558A US155835A US2088924A US 2088924 A US2088924 A US 2088924A US 1558 A US1558 A US 1558A US 155835 A US155835 A US 155835A US 2088924 A US2088924 A US 2088924A
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US
United States
Prior art keywords
lamp
circuit
relay
switch
vacuum
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Expired - Lifetime
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US1558A
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English (en)
Inventor
Ringrose Henry Thomas
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Individual
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Individual
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Publication of US2088924A publication Critical patent/US2088924A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
    • G01N7/10—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
    • G01N7/12—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference the diffusion being followed by combustion or catalytic oxidation

Definitions

  • thewarning lamp has associated therewith arelayadapted.
  • a manually operated switch would be provided in the relay lgo-circuit whereby, once the warning lamp circuit has' been completed, ⁇ by4 the ,vacuum operated ⁇ switcher collapsible ⁇ diaphragm, the relay circuit can-be brokeniijorn time ⁇ to time so asto ascertain Whether the ⁇ predeternined"vacuumLexists thefporous vessel" andthe la-mpcircuit is still completedthrough the vacuum ⁇ controlledor ,col- Y ipsiblediaphragm.
  • Figure 1 is ai -partsectionaliside elevation of the-lamp head ortop of an apparatus, in the 4form ⁇ of ⁇ a miners ⁇ lamp, for indicating or recording the presence of inammable vapours or gases in mines.
  • Figure 2 isa planoi Figure 1.
  • g FigureB is a side elevation taken at right angles to'jl'igiire 1- and'in the direction of the ⁇ arrow A, the outer cover or cap ⁇ andlamp glass being omitted for the sake-of i clearness.
  • Figure ⁇ 4 is anotherelevation of Figure 1, but taken in the direction of the arrow B.
  • Figure5 is an electrical? circuit diagramof the apparatus.
  • vvformer 1of which carries a lamp 5 and the other 30 a Warning lamp B oflarger capacity.
  • the positive terminal- Tof the lamp holder 3 is connected to the base plateeor top I by means of a lead 8 and screw-down terminal 9, and the negative terminal Il] of said lamp holder 3 is connected by a leadII to the positive terminal I2 of the other ⁇ lamp holder 4 whose negative terminal strip I3 is connected to a binding post I4 passing through 'an insulating b ush I5 in the base or top I to the negative terminal' of the accumulator or battery (not shown).
  • the lamps 5 and 6 are connected in series and their relative capacities are such that the lamp 5 normally glows, whilst the filament of the other lamp 6 normally passes current Without becoming incandescent.
  • the positive terminal I2 of the lamp holder 4 is connected by a lead I6 to a bracket I'I which is mounted upon-an insulating plate I8 on the base or top I and secured to the latter by means of screws I9 passedthrough insulating washersi 50 or sleeves 2
  • the bracket I1 carries a spring arm 2
  • This hollow metal diaphragm is connected electrically by a metal tube 25 and hollow pillar 26 to the base or top I, whilst the passage 21, afforded from the interior of the diaphragm 24 by the tube 25 and hollow pillar 26, communicates directly with a porous vessel 28 in which a vacuum is created in accordance with the percentage of inflammable vapours or gases in the surrounding atmosphere.
  • the contact 23 passes through a hole in the spring arm 2
  • a relay indicated by coils 29, is connected across the larger capacity lamp 6, and the vacuum operated switch or collapsible diaphragm 24 is connected across the smaller capacity lamp 5, whilst the armature 30 of the relay is connected through a make and break switch to the positive side of the smaller capacity lamp 5 and associated vacuum controlled switch or collapsible diaphragm 24.
  • the relay is mounted upon an insulating platform 3
  • the smaller capacity lamp 5 ceases to function and the larger capacity lamp 6 does not light, this indicates that the filament of one of the lamps has burnt out or the series electric circuit is broken. If on the other hand the larger capacity lamp 6 lights up when the smaller capacity lamp goes out, this indicates that at least the predetermined vacuum has been created in the .porous vessel either as a result of the presence of inflammable gas or vapour in the porous vessel 28 or the lament 39 being fused or broken. If upon inspection through the transparent portion 38 or wall of the porous vessel 28, it is found that the filament 39 therein is still glowing or incandescent, and the larger capacity-lamp 6 is still alight, this definitely indicates the presence of excess gas or vapour.
  • the relay may be adapted to operate further or auxiliary warning any excess of gas or vapours is caused to operate .39
  • the warning lamp this is maintained on by the relay, and that under these conditions said lamp cannot be put out, by breaking of the relay circuit, until such time as conditions are again 5 normal.
  • An apparatus for indicating the presence of inflammable vapors orgases and of the kind specified comprising a source of current, an electric signaling or indicating means, including anl indicator circuit, two lamps of relatively diiferent capacities arranged in series in said circuit, a relay circuit including a relay, connected to said indicator circuit across the larger capacity lamp, means in said relay circuit including a switchr responsive to the presence of inflammable gasesf of the subsequent operation of the gas responsive tric signaling or indicating means, including an n indicator circuit, two lamps of relatively different capacities arranged in series in said circuit, a ref lay circuit including a relay, connected to said indicator circuit across the larger capacity lamp said relay having an armature, means in said relay circuit including a switch responsive to the presence of inflammable gasesy connected across the smaller capacity lamp for completing said relay circuit, and means to maintain the vlarger.
  • An apparatus for indicating the presence of inflammable vapors or gases and of the kind specified comprising a source of current, an elec-y tric signaling or indicating means, including a lamp circuit, a warning lamp in said circuit, a lamp of lower capacity than said warning lamp arranged in series with said warning lamp in said circuit, a relay, the coil of whichV is in parallelf circuit with said warning lamp, means including a switch responsive to the presence of inflammable gases for completing the circuit through the relay and Warning lamp, whereby said relay will be energized when the circuit through the Warning lamp is completed by said switch, and
  • An apparatus for indicating the presence of inflammable vapors or gases and of the kind specified comprising a source of current, an electric signaling or indicating means, including an indicator circuit, two lamps; of relatively diierent capacities.A arranged in seriesl in said circuit,
  • a shunt circuit including a relay connected to said indicator circuit across the larger capacity lamp, means in said shunt circuit including a switch responsive to the presence of inflammable gases, connected across the smaller capacity lamp for completing said shunt circuit and effective when closed to complete said shunt circuit to cut out said lamp of smaller capacity and to increase current flow to said lamp of larger capacity, means including a holding circuit through said relay to maintain the larger capacity lamp in circuit, irrespective of subsequent operation of the gas responsive switch in said shunt circuit, and means to break said holding circuit.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Air Bags (AREA)
  • Emergency Alarm Devices (AREA)
US1558A 1934-01-29 1935-01-12 Electric signaling or indicating means Expired - Lifetime US2088924A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2912/34A GB426981A (en) 1934-01-29 1934-01-29 Improvements in or relating to electric signalling or indicating means

Publications (1)

Publication Number Publication Date
US2088924A true US2088924A (en) 1937-08-03

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ID=9748402

Family Applications (1)

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US1558A Expired - Lifetime US2088924A (en) 1934-01-29 1935-01-12 Electric signaling or indicating means

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US (1) US2088924A (da)
BE (1) BE407414A (da)
FR (1) FR784349A (da)
GB (1) GB426981A (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433124A (en) * 1945-04-20 1947-12-23 Casco Products Corp Electric flatiron
US2535950A (en) * 1948-10-18 1950-12-26 Carl M Page Flammable gas detector
US4422859A (en) * 1982-05-24 1983-12-27 Consolidated Technology Corporation Apparatus and method for safely purifying hydrogen gas

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433124A (en) * 1945-04-20 1947-12-23 Casco Products Corp Electric flatiron
US2535950A (en) * 1948-10-18 1950-12-26 Carl M Page Flammable gas detector
US4422859A (en) * 1982-05-24 1983-12-27 Consolidated Technology Corporation Apparatus and method for safely purifying hydrogen gas

Also Published As

Publication number Publication date
GB426981A (en) 1935-04-12
BE407414A (da)
FR784349A (fr) 1935-07-22

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