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Publication numberUS1164507 A
Publication typeGrant
Publication dateDec 14, 1915
Filing dateJan 17, 1914
Priority dateJan 17, 1914
Publication numberUS 1164507 A, US 1164507A, US-A-1164507, US1164507 A, US1164507A
InventorsJames B Guyer
Original AssigneeJames B Guyer
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Signal control.
US 1164507 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)



Patented Dec. 14, 1915.

I 9 Jamea'fi Gag/976K JAMES B. crime, OF NEW "roan, N. Y.


Specification of Letters Patent.

Patented Dec. 14., iairi.

Application filed January 17, 1614. Serial 160,812,746.

To all whom it may concern Be it known that I, JAMES B. GUYER,

a citizen of the United States, residing at New York city, in the county of New York and State of New York, have invented new and useful Improvements in Signal Controls, of which the following is a specification.

' The general object of this invention is to effect the automatic breaking of the circuit in an electric audible signal system and the like, after the circuit is closed for the purpose of actuating the signal, and thus reduce the consumption of the electro-motive force to a minimum. And to these ends the invention consists of a pivoted member located in the circuit and a trip controlled by an electro-magnet and adapted to actuate the said pivoted member and means for resetting the said trip member after the same has been actuated.

Other objects will appear and be better understood from that embodiment of my invention of which the following is a specification, reference being had to the accompanying drawings forming part hereof, in which Figure 1 is a diagrammatic view of a usual electric signal system showing my invention located therein. Fig. 2 is a detail view of my invention showing the manner in which the circuit of the signal system is broken.

As shown in the drawings the dotted lines 5 indicate a suitable casing for the circuitbreaker which is composed of the electromagnet a, a segmental trip I) and the pivoted contact 0. This circuit breaker is connected by means of the wires 6 to the usual signal-system (Z and may be located at any convenient place to afford convenient access thereto, so that an operator may easily reset the same after each operation.

The electro-magnet a is formed by the wiring 6 in the usual manner, and is provided with a reciprocating core 7 which is adapted to be actuated by the current from the cells 10 energizing the magnet a.

The trip I) is substantially segmental in shape, and is pivoted at 8 to the base of the casing 5. One side of the trip is weighted as at 11, which, by force of gravity, tends to cause the trip to rotate in the direction of the arrow as shown in Fig. 1. In order toretain the trip in the cooked position, a

notch 12 is provided in the periphery thereof, so that upon the trip being reset, the core 7, owing to gravity, will drop into the notch and so prevent the forward movement of the trip. A stop lug 13 is positioned on the base, and is adapted to limit the clockwise or backward movement of the trip as shown.

The pivoted contact 9 is connected to the wiring 6 so as to interrupt the flow of current therethrough, and is positioned so as to be tilted by the trip I) when the latter drops as before described; and to limit the extent of movement by the contact 9, a stoplug 14 is located adjacent thereto as shown. The opposite end of the contact is provided with an offset or weighted end 15, which contacts with a terminal 16 connected to the wiring 6, when the contact is in its normal position. Thus it will be seen that when the contact 9 is in its normal position, such as shown in Fig. 1, it tends to close the circuit, but when acted unon by the trip, the offset portion 15 is released from contact with the terminal 16, thus breaking the circuit.

In operation, the trip is set as shown in Fig. 1 and obviously the contact 9 will assume its normal position shown in the same figure. The push-button 17 which is normallly open by virtue of its resiliency, is pressed by the finger in the usual manner, and thus closes the circuit; the current passes from the cells 10, through the wire 6 around the magnet, through the contact 9 to the terminal 16 then through the closed button to the bell. 18, whence it returns to the cells. It will be noted, however, that the current also energizes the magnet a which draws upwardly the core 7 thus releasing the trip. The latter then drops by virtue of its weighted side 11 and tilts the contact 9, thus breaking the circuit and stopping the flow of current to the bell. The trip I) may then be reset by directing inwardly the resetting rod 19 which is fitted in the lower end of the casing and is adapted to bear against the trip and direct the same back to the position shown in Fig. 1.

What is claimed as new is:

In combination with a source of electric current, a magnet and an alarm, an open circuit connecting with said elements, means for closing said circuit, a switch connected in the circuit and normally held by gravity coming the influence of gravity acting upon in a closed position and a gravity actuated the switch to maintain the same closed. 1-0 member retained by the magnet When the In testimony whereof I afiix my signature magnet is inactive and released by the mag in presence of two Witnesses.

. net When the magnet is active, said member JAMES B. GUYER. when released adapted to engage the switch Witnesses: and open the same under the influence of M. E. LAUGHLIN, gravity acting on the said member and over- G120. A. BYRNE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5186228 *Feb 8, 1991Feb 16, 1993Stafford Donald CWorkbench and mountable implements
U.S. Classification340/286.11, 246/256
Cooperative ClassificationG08B5/36