US320238A

US320238A - Electrical push-button

Info

Publication number: US320238A
Authority: US
Publication date: 1885-06-16
Anticipated expiration: 1902-06-16

Description

(No Model,)

J. GEARY.

ELECTRICAL PUSH BUTTON. I No. 320,238. Patented June 16, 1885.

W'xmesses: 1m: aumr:

JOHN GEARY, OF PHILADELPHIA, PENNSYLVANIA.

ELECTRICAL PUSH-BUTTON.

SPECIFICATION forming part of Letters Patent No. 320,238, dated June 16, 1885.

Application filed April 15, 18: 4. (No model.)

T 0 all whom it may concern:

Be it known that 1, JOHN GEARY, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Electrical Push-Buttons; and I do hereby declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, which form part of this specification, in which- Figure 1 is a vertical or transverse section.

2 is an inverted plan. Fig. 3 is a perspective of staple.

My invention has for its object to provide an electrical puslrbutton, which in operation shall have rubbing or sliding contacts, whereby the points 01" Contact will be kept clean and insulation from dust, &c., avoided.

A further object of my invention is to provide an electrical push-button which shall be simple in construction and comparatively inexpensive, yet durable, el'licient, and not liable to get out of order.

My invention consists in the peculiar con struction and combinations ofparts hereinafter fully set forth and claimed.

Referring to the accompanying drawings, A represents an insulating-base in the form of a ring, and B a metal cylinder or cap attached thereto. Itdesired, parts A and B may be integral and consist of insulating material.

C is a button or disk designed and adapted to fit in the cylinder B and to be moved in and out in the latter. On the inner or under side of this button or disk, and between the latter and the shoulder u of the ring A, is a spiral spring. D, which tends to press said button outwardly or upwardly, and which will yield to pressure and permit said button to be pushed inwardly or downwardly.

To the inner side of said button 0 is secured, by a screw, 0, or equivalent fastening, a metallic spring-staple, E, of approximately U shape, having two limbs or branches, 6' e. The outer extremities of these limbs converge toward each other, as shown at c e, not meeting, however, whenthe button is in its normal outward position. These extremities are adapted and designed to establish metallic M connection between the electrodes or battery terminals ff, which latter are shown as wires passing into the base A. Vhen the button 0 is pushed inwardly, the ends (2 c are brougl 11 into contact with said terminals ff, sliding and rubbing thereon in the act of forming con tact, thus operating to keep the contacting surfaces clean and bright.

To keep the button and its attached parts from coming out of place, one of the legs of the staple E is provided with a lug or stop, c, which abuts against a transverse pin, y, inserted in the base, and to keep the button from being pushed in too far, another lug or stop, c. may be formed on one of the legs of the staple E, the pin 5 thus coming between said twolugs or stops, which latter are plainly illustrated in Fig. 3.

It is obvious that when the button is pushed in, electrical connection is established between the battcry-terminals through the staple E, and that when pressure is relieved the button is impelled outwardly by spring I), elcctiical disconnection being thus el't'e(ted and the legs of the staple springing apart.

\Vhat I claim as my invention isas follows:

1. The combination, in an electrical pushbutton, 01 base A, cylinder or cap B, button 0, spring I), swing-staple E, having converging ends 0 c, and naked \\'iresf which pas through holes in said base and are pcrma nently secured therein, substantially as shown and described.

2. In an electrical push-button, the combination, with spring-staple E, having a lug, c or a of transverse pin y in base A, substautially as shown and described.

In testimony that I claim the foregoing l have hereunto set my hand this 10th day ol' April, 1884.

JOHN GEARY.

\Vitnesses:

\VILL H. POWELL, ANDREW ZANE, Jr.