US695398A - Circuit-maker for electric fire-alarms. - Google Patents

Description

No. 695,398. Patented Mar. H, I902.

F, W. JORDAN.

CIRCUIT MAKER FOR ELECTRIC FIRE ALARMS.

A iimion Mod July 19, 1901.)

(No lodoI.)

WITNESSES INVENTOR A tiarney UNITED STATES PATENT OFFICE.

FRANK IV. JORDAN, OF NORIVOOD, MASSACIIUSETTSa CIRCUIT-MAKER FOR ELECTRIC FIRE-ALARMS.

SPECIFICATION forming part of Letters Patent No. 695,398, dated March 11, 1902.

Application filed July 19,1901. Serial No. 68,968. (No model.)

To aZZ whom it may concern.-

Be it known that I, FRANK W. JORDAN, a citizen of the United States, residing at Norwood, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Circuit-Makers for Electric Fire-Alarms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to circuit-makers for electric fire-alarms; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure l is a front view of the circuit-maker. Fig. 2 is a plan view of the same from below. Fig. 3 is a crosssection taken on the line a; o; in Fig. 1.

A is a piece of wall-molding, such as used to hang pictures from. Two grooves b and c are cut longitudinally in the back of the strip of molding A, and b and o are wires arranged in the said grooves. These wires are in cir cuit with an electric battery and a call-bell of any approved construction and are normally out of circuit with each other. At intervals sockets or recesses D are cut in the back of the molding, and in each socket or recess a pin cl is arranged in contact with the lower wire 0.

E is a contactdever which is pivoted on the pin cl and which has one end portion 8 heavier than the other.

F is a plate which is secured to the molding A and which has a pin f, which projects below the bottom of the molding. A plate G is pivoted on the pin f, and g is fusible metal or cement which connects the upper side of the plate G with the under side of the heavy end of the contact-lever.

The upper wire I) has a plate h secured to it for the contact-lever to strike against when the fusible metal is melted and the heavy end of the contact-lever descends by gravity.

The fusible metal is made so that it will melt whenever subjected to any prearranged temperature higher than that normally found in any room to which the device is to be applied. In case of a fire in the room the fusible metal melts on the device which is nearest to where the fire is located and the electric circuit is established through the wires, so that the alarm is sounded.

\Vhat I claim is 1. The combination, with a strip of wallmolding, and two wires carried by the said strip one above the other; of a pivoted gravity-lever arranged in circuit with the lower of the said wires, a plate pivoted to the mold ing, and fusible metal normally connecting the said plate with the heavy end of the said lever and holding it out of contact with the upper wire, substantially as set forth.

2. The combination, with a strip of wallinolding having a recess in its back and two longitudinal grooves one above the other; of an upper and a lower wire arranged in the said grooves, a pivoted gravity-lover arranged in the said recess in circuit with the lower wire, a plate pivoted at the lower part of the recess, and fusible metal normally connecting the said plate with the heavy end of the said lever and holding it out of contact with the upper wire, substantially as set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

FRANK IV. JORDAN.

Witnesses:

ALICE J. MURRAY, FREDK. K. Dneenrr.

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