US492330A

US492330A - Julius kamsler

Info

Publication number: US492330A
Authority: US
Publication date: 1893-02-21
Anticipated expiration: 1910-02-21

Description

(No Model.)

J KAMSLER ELECTRIC BURGLAR ALARM.

. alga Patented Feb. 21, 1893.

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Uivitrnn *TATES PATENT Erica.

JULIUS KAMSLER, OF NEW YORK, N. Y.

ELECTRIC BURGLAR-ALARM.

SPECIFICATION forming part of Letters Patent No. 492,330, dated February 21, 1893.

Application filed December 15,1892. Serial No. 455,250. (No model.)

To all whom it may concern:

Be it known that I, JULIUS KAMSLER, a citizen of the United States, residing at New York, in the county and State of New York, have invented new and useful Improvements in Electric Burglar-Alarms, of which the following is a specification.

The object of this invention is to provide a burglar alarm which is compact in construction and readily applied in place and the invention consists in the novel features pointed out in the following specification and claim and illustrated in the annexed drawings, in which,

Figure 1, shows a face view of the contact mechanism of the alarm in place. Fig. 2, is a face view of the contact mechanism of Fig. 1 enlarged and detached. Fig. 3, is an inverted plan view of Fig. 1. Fig. 4, is a section along or 03 Fig. 2.

In the drawings the letter A indicates a base or support having the binding posts B O to which are connected the conductors D F. connecting in anysuitable well known way with a battery and alarm or hell mechanism (not shown). From post B extends a conductor F to the fulcrum G of lever II. The lever H is adapted to touch the contact pieces or posts I K. These contact pieces are secured by screws or fastenings L M near one extremity of the base A and a conductor N connects the posts L C while conductor 0 connects fastenings L M. The fulcrum G is located near the opposite extremity of base A from the posts I K and the lever II is connected at one of its ends to said fulcrum. The opposite or free end of the lever is adapted to make the connection with the contacts I K and a spring or weight P tends to hold the lever in contact with the piece I. The various parts of the device are thus located within the boundary of base A making a compact structure.

The base A has holes Q through which screws or fastenings can be passed for securing the base to a convenient place as a Wainscot or window case R. As the base is adapted to sit flat on its seat and the lever II moves in the plane of the base the latter can be directly fastened in the desired locality such as an exposed face or portion of easing R and no preliminary recessing or cutting is required for providing a seat for said base or play room for the lever so that the device is readily applied in place. From lever H extends a thread or connection S to a window sash T said thread being connected to the sash at one side of the lights or panes U so as to be out of line of view'and not readily discoverable, especially from the outside.

When the thread S is connected to the sash T the latter is slightly raised or opened to pull the thread and hold lever I-I out of contaotas seen in Fig. 1 or the thread S might be connected to the sash in such a way as to hold the lever out of contact even when the sash is entirely closed. It now it be attempted to open the sash T to its full extent the thread S will move lever I-I into contact with post K and as said thread is rupturable or not excessively strong any considerable strain thereon will break the same whereon the spring P will move lever H into contact with post I. Should the thread S be cut the lever II-will likewise come into contact with post I. The circuit it will be noticed is closed when lever II touches either of the posts I K.

Of course I do not confine the use of my device to windows as it might be applied elsewhere as for example on doors.

When the alarm is not required the thread S can be detached from the window sash and secured at any fixed point to hold the lever out of contact. In summer time for example it frequently happens that the upper sash is down or open and by slightly raising the lower sash T the lever II is held out of connection. Any person then attempting to enter by climbing in at the upper opening will press upon and push down the lower sash thus causing the lever H to make contact and move it in one direction, and a flexible thread In testimony whereof I have hereunto set S connected with the lever and adapted to be my hand in the presence of two subscribing engaged with a window or door for sustain- Witnesses.

ing' the lever free from connection with the JULIUS KAMSLER. 5 contacts on the base plate until said thread Witnesses:

is tightened, or loosened or ruptured, sub- JACOB KAMSLER,

stztntiztlly as described. E. F. KASTENHUBER.