US105369A

US105369A - Improvement in burglar-alarms

Info

Publication number: US105369A
Authority: US
Publication date: 1870-07-12
Anticipated expiration: 1887-07-12

Description

W. REYNOLDS. BurgIaJr AIarm No. 105,369. Patented July 12, 1870.

WITNESSES;

NPEIERS. PHDTO-LITD'IOGRAPHER.WASHXNGTON, b. c.

itched gtatez fitment ctjijiire.

wltttA-nnurnows, or MANCHESTER, NEW HAMPSHIRE.

Letters Patent No. 105,369, dated July 12, 1870.

IMPROVEMENT IN BURGLAR-ALARMSL i i I, WILLIAM Rm'sows, of Manchester, in the county of Hillshorough and State of New Hampshire,

have invented certain Improvements in Burglar- Alarms, of which the followingis a specification. Y My invention-relates tovalarms to be used in houses, for the purpose of giving an alarm should the house he entered by burglars 'tin ough the doors orwindows to which the alarm is connected.

The nature of my invention consists in the construction and arrangementbt' the devices for springing the alarm for theabove-mentioned purpose, as will be hereinafter fully explained. In theaccom panying drawing, which is a perspectviewv i A 13 represent the two flat pieces, fastened together i at right anglesQto each other, to which the various v parts of the alarm are attached.

'lovthc piece A is secured a frame, in which is located the ordinary gearing used in alarm-clocks, with a flat coiled spring, 860.

Thegongor hell 0 is also secured to the piec'eA. Inthe frame inwhich the gearing is placedis a shaft, (1, on one side of which is a curved ratchet, I), its ends being tinned inward, and which engage the teeth of the ratchet-wheel D. a i crepresents an arm, which extends out from the shaft to, with a ball on itsonter end, which, when the alarm is wound up andsct, isheld up above the gong orbell; it a Secured to the piece B is a post or rod, (1, the upl per end of which ispointed. v

I e c e c are wires or cords, one end of each being attached to theshortrod f, and their other ends to spiral springs or their equivalents, g g g g, and to the otherends of these springsare attached wires or cords h h h h, the othcrends of which are attached to the doors or windows in the lower portion of the house.

Attached to the shaft a is a rod or arm, 'i, which extends ont over the post or rod (1. 4

Its operation is as follows: i The outer ends of the cords h are attached to the doors or windows, and the. lower end of the rod f is placed on the upper end of the post or rod (I, with outerend of the rod 42 resting on its upper enchas shown in' thedrawing.

When the rod 11 is'in this position, the upper end of the ratchet 7) holds the ratchet-wheel D and its connecting parts stationary, the ball on the outer end of thearm 0 being raised above the gong'or hell 0.

When one of the cords It is pulled by the opening of a door or window, or from any cause, it displaces the rod f from off the post or rod ll and from under the arm 1, whichreleases the upper end of the curved ratchet b from the ratchet-wheel D, which is now .caused to revolve by means of the spring j, and the teeth of the ratchet-wheel, striking the ends of the ratchet I), give a rapid vibratory motion to the arm a and the ball which strikes the gong or hell, thus sounding an alarm.

Having thus fully described my invention,

, \Vhat I claim, and desire to secure by Let-ters Pat- 'ihe combination and arrangement of the post at, detached rod 1, springs g, or their equivalents, and arm or rod 1', with its operative parts, when constructed and operating substantially as shown and described.

7 WILLIAM REYNOLDS.

\Vitnesses:

CHARLES DAVIS, DAVID 1.- Nonnis.