US470596A - Electric-circuit closer - Google Patents

Description

(No Model.) I

- (aw. PRICE.

ELECTRIC CIRCUIT CLOSER.

No. 470,596. Patented Mar. a, 1892.

WITNESSES: v mmnon I Geo)? ATM/ME? 7N: mmms PETERS-00.; mo'lo-Ln'mL WASHINGTON, 0.4:.

clare the following to be a full, clear, and ex UNITED STATES PATENT. OFFicE.

GEORGE W. PRICE, OF BALTIMORE, MARYLAND.

ELECTRIC-CIRCUIT CLOSER.

SPECIFICATION formingpart of Letters Patent No. 470,596, dated March 8, 1892.

Application filed November 18, 1889. Serial No. 330,664. on model.)

To all whom it may concern.-

Be it known that I, GEORGE W. PRICE, a citizen of the United States, and a resident of Baltimore, in the State of Maryland, have invented new and useful Improvements in Electric-Circuit Closers; and I do hereby deact description of said invention, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to improvements in electric-circuit closers, the object being to pro vide an improved and simplified construction which is designed more particularly for use in connection with electrical door-pulls,whereby a ready change may be made from a mechanical to an electrical door-pull and still retain the original mechanical fixtures, as will be hereinafter fully described, and specifically designated in the claim.' 7

In the accompanying drawings, Figure 1 represents a side elevation of my improvements as attached to an ordinary bell-pull,

and Fig. 2 a detail top plan view thereof.

Similar letters of reference indicate like parts in both figures of the drawings.

In carrying out my invention the base A of the circuit-closer is formed of wood or other suitable insulating material and is provided at each end with an upwardly-exten ding block or rest (1-, also of suitable insulating material. The one end of a coiled metallic spring B is secured to the top of one of the insulated blocks a, while the opposite end of said spring,

which terminates in a straight wire 1), passes through a hole or opening in the opposite insulating-block,where it is provided with a loop or hook c, as shown.

Upon the top of the insulating block,

7 through which passes the wire I) of the coiled spring B, is attached a metallic contact-piece G, the outer end of which is slightly curved upward, as shown at c, to contact with the coils of the metallic spring B when in operation. Electrical connection 'is made at the screws e and f upon the tops of the insulated blocks a, as shown.

The construction being as above described, it will be readily seen when the base A is screwed or otherwise firmly secured to a support, and a wire leading in. a direct line from the loop or hook c to the bell-pull D, and the battery-wires g and h form part of an electrical circuit that any pull upon the loop or hook 0 must close the circuit and establish electrical connection by bringing in contact the coils .of the, spring B with the metallic contact-piece 0.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a circuit-closer, the combination, with the base A, of the coiled spring B, secured to one of the blocks by a screw e and having a straight extension 13 passing through an opening in the other block and having a loop 0 at its extremity, and the spring contact-piece C, secured to the other block by a screw f and curved upward at its free end 0, the curved portion lying in the line of extension of the spring B, so that when the same is extended electrical contact will be made with the contact-piece and the circuit closed, substantially as specified.

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

GEORGE w. PRICE. [n s.]

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