US174461A

US174461A - Samuel s

Info

Publication number: US174461A
Authority: US
Publication date: 1876-03-07
Anticipated expiration: 1893-03-07

Description

S. S. APPLEGATE. CIRCUIT-CLOSERS FOR ELECTRIC-ALARMS.

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UNITED STATES PATENT QFFICE.

SAMUEL s. APPLEGATE, or CAMDEN, NEW JERSEY.

-IMPROVEMENT IN ClRCU|T-CL OSERS FOR ELECTRIC ALARMS.

Specification forming part of Letters Patent No.

To all whom it mag concern:

Be it known that I, SAMUEL S, APPLE- GATE, of Camden, New Jersey, have invented an Improved :Indicator and Alarm for Stores, 850., of which the following is a specification The object of my invention is to provide stores, oiiices, 850., with an economical device, through the medium of which an alarm can be given by those who pass through the doorway; and this object I attain in the manner which I will now proceed to describe, refercnce being had to the accompanying drawing,- in which- Figurel is a longitudinal section of part of the floor of a room, showing the application of my invention; Fig. 2, an enlarged sectional view of Fig. 1.

A is a platform, arranged on the floor of a signal apparatus that when the platform A is depressed a circuit will be completed and an alarm sounded. The springs 01 (shown in the drawing) consist of short sections'of rubber tubing, throughwhich the pins b' pass, and

which are secured at their upper ends to the under side of'the platform A; butother springs may be employed for slightly elevating the platform above the floor, and insuring its recoil after being depressed.

The platform may be covered with rubber,

cloth, or other suitable material, which extends over the edges, and has the appearance of an ordinary rug or mat, one ofits main advantages being that the platform can be removed 174.461, dated March 7, 1876; application filed June 9, 1875.

and replaced with facility, and withoutdisturb- 7 ing the electrical mechanism through which the alarm is given.

. Although my invention isintended espe cially for application to small stores, 850., where it is desired to call an attendant from an adjoining room upon the entrance of a cus tomer, it may be applied with good eifect to the vestibulesor halls of dwellings. In this case the fact that the platform takes the place of an ordinary mat, and can be applied without mutilating the floor, is of especial advantage, as these floors are frequently made of costly marble, the injury of which consequent upon the use of ordinary forms of platforms has heretofore prevented their adoption.

I am aware that yielding boards andspringplatforms sunk in recesses in the floor have been heretofore used as indicators or alarms,

and therefore do not claim the combination of the yielding platform with the electric alarm but e I claim as my invention- The combination of a floor' having a surface free from recesses with the platform A, supported above said surface upon springs 01, and provided with pins 1), passing through minute openings in the floor, and connected below with the circuit-breaker of an electric alarm, all substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' SAMUEL S. APPLEGATE.

Witnesses:

HUBER-'1 HowsoN,

HARRY SMITH.