US1909712A - Indicating device with two electrically operated signals - Google Patents

Indicating device with two electrically operated signals Download PDF

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Publication number
US1909712A
US1909712A US317336A US31733628A US1909712A US 1909712 A US1909712 A US 1909712A US 317336 A US317336 A US 317336A US 31733628 A US31733628 A US 31733628A US 1909712 A US1909712 A US 1909712A
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United States
Prior art keywords
electrically operated
indicating device
lamp
operated signals
signals
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Expired - Lifetime
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US317336A
Inventor
Oppegaard Karl Fredrik
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Oppegaard Karl Fredrik
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Priority to DE1909712X priority Critical
Application filed by Oppegaard Karl Fredrik filed Critical Oppegaard Karl Fredrik
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Publication of US1909712A publication Critical patent/US1909712A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00Recording or indicating positions or identities of vehicles or vehicle trains or setting of track apparatus
    • B61L25/06Indicating or recording the setting of track apparatus, e.g. of points, of signals
    • B61L25/08Diagrammatic displays

Description

May 16,1933. K. F. OPPEGAARD ,909,

INDICATING DEVICE WITH TWO ELECTRICALLY OPERATED SIGNALS Filed NOV. 5, 1928 8/ jyd unirao STATES PATENT. OFFICE rnnnnm ofrneaann, or HOVIK NEAR osno NORWAY INDICATING DEVICE TWO ELEGTRICALLY OPERATED SIGNALS Application filed November 5, 1928, Serial No. 317,336, and in Germany June 15, 3182 8.

The present invention relates to signalling devices with two electrically operated signa s, one of which should always be m functio Signalling devices of this kind are ge'nerally used in connection with controlling devices for railway and street trailic,util1zing differently coloured light in order to indicate wh'ether'the street or railroad is free or blocked. v 1

Further, signalling devices of thisliind are utilized in connection with switch board indicators for'the supervision and control of electrical plants as well as of railway junc tions and the like.

The electric lines *for a device of this kind must be so connected that one signal is automatically put in operation when the other signal is switched out and vice versa.

This is obtained in accordance with the present invention in a simple manner by connecting the electric actuating devices for both signals in series between the electric current supply lines of the device, and giving one actuating device a higher electric resistance than the other, whereas the actuating device with the highest electric resistance is provided with means for being short-circuited in order to be put out of operation.

When both actuating devices are connected in series, the one having the largest electric resistance will be actuated alone, as .it does not permit the passage of a sufficient amount of current to actuate the other device.

When, however, the said first actuating automatically actuated.

In case the signals consist of lamps with different colours, one chooses according to the invention one lamp with high filament resistance, and another lamp with low filament resistance, in the case of relays, coils are utilized.

Onxthe drawing a preferred form of the invention is diagraminatically illustrated.

Referring to the drawing 1, 2, 3, 4: indi-. cates the sections of a secondary line corresponding to the sections of aprimary line which is not indicated on the drawing.

The sections 1, 2 an 3, 4 are intercom V nected by means of switches .5, 6, 7, which are controlled in any convenient manner by the corresponding switches of the primary line., The control of the switches 5, 6, 7 may be purely mechanical ormay be electric or may be carried out in any other conventional manner well known from switch board indicatbrs. V

- The terminal sections 1, 4 are connected with the positive feed line. The sections 2, 3, thecondition of which is to be indicated by the switch board indicator are-each connected with a red lamp R and the green lamp G which are connected in series between the positive and negative feed lines.

' One of the lamps, for instance the red lamp, has a low filament resistance which may be obtalned for instance by utilizing a carbon filamentfor that lamp, whereas the other lamp, in this case the green lamp, has a high filament resistance.

In the position indicated on the drawing, the green lamp'will burn and the red lamp will remain dark'as the green lamp does not let uflicient current through for operating the red lamp.

N If switch 5 is closed, this will however have the effect of short-circuiting the green lamp and the red lamp will now receive current directly from the positive line and will be actuated.

In. case the red lamp does not function, no current can pass to the green lamp, so that in this case none of the lamps will be actuated.

I claim.

A switch hoard indicator for the. sn per-v vision of a system of lines, electric lanes,

K railway lines, pipe lines and the like and the connecting devices thereof, means for indicating .on the switch board indicator the condition of separate sections of the lines,

,7 said means comprising Imirs of erently colored lamps with difierent filament resistance connected in series, and means controlled by the switches of the line system represented on the switch hoard indicator for slfort-circuiting the lamps having the hi hest filament resistance.

n testimony whereof I have signed my name to this specification.

BL FREDRM OPPEGAAJRD.

US317336A 1928-06-15 1928-11-05 Indicating device with two electrically operated signals Expired - Lifetime US1909712A (en)

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DE1909712X 1928-06-15

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429466A (en) * 1942-11-04 1947-10-21 Brown Instr Co Measuring and controlling apparatus
US2441359A (en) * 1942-11-04 1948-05-11 Brown Instr Co Selective signalling
US2448776A (en) * 1944-01-19 1948-09-07 George W Crise Thermostatic control and signaling device
US2468676A (en) * 1945-04-20 1949-04-26 Premier Crystal Lab Inc Level indicating device for fluent materials
US2486599A (en) * 1947-08-05 1949-11-01 Jesse R Hollins Lighting circuit condition indicator
US2510115A (en) * 1947-03-17 1950-06-06 Jakosky Milton Aircraft safety belt
US2517302A (en) * 1946-04-08 1950-08-01 Graves Richard Timing light
US2562271A (en) * 1947-10-23 1951-07-31 Jesse R Hollins Auxiliary energizing circuit for vehicle signal lamps
US2736884A (en) * 1954-02-09 1956-02-28 American Telephone & Telegraph Overcurrent and undercurrent indicating lamp
US2760113A (en) * 1952-02-13 1956-08-21 Auto Lamp Mfg Company Signal light system for motor vehicles
US2784348A (en) * 1952-06-06 1957-03-05 Auto Lamp Mfg Company Signal light system for motor vehicles

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429466A (en) * 1942-11-04 1947-10-21 Brown Instr Co Measuring and controlling apparatus
US2441359A (en) * 1942-11-04 1948-05-11 Brown Instr Co Selective signalling
US2448776A (en) * 1944-01-19 1948-09-07 George W Crise Thermostatic control and signaling device
US2468676A (en) * 1945-04-20 1949-04-26 Premier Crystal Lab Inc Level indicating device for fluent materials
US2517302A (en) * 1946-04-08 1950-08-01 Graves Richard Timing light
US2510115A (en) * 1947-03-17 1950-06-06 Jakosky Milton Aircraft safety belt
US2486599A (en) * 1947-08-05 1949-11-01 Jesse R Hollins Lighting circuit condition indicator
US2562271A (en) * 1947-10-23 1951-07-31 Jesse R Hollins Auxiliary energizing circuit for vehicle signal lamps
US2760113A (en) * 1952-02-13 1956-08-21 Auto Lamp Mfg Company Signal light system for motor vehicles
US2784348A (en) * 1952-06-06 1957-03-05 Auto Lamp Mfg Company Signal light system for motor vehicles
US2736884A (en) * 1954-02-09 1956-02-28 American Telephone & Telegraph Overcurrent and undercurrent indicating lamp

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