US447748A - Lewis w - Google Patents

Description

(No Model.)

L. W. CLEVELAND. ELECTRICAL DOOR BELL PULL.

No 447,748. Patented Mar. 3,1891.

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UNITED STATES LEWIS IV. CLEVELAND, OF PORTLAND, MAINE, ASSIGNOR OF THREE-FOURTHS TO CLARENCE L. MARSTON, LEWIS A. BARKER, AND DENNIS A. MEAIIER,

ALL OF SAME PLACE.

ELECTRICAL DOOR-BELL PULL.

S?ECIFICATION forming part of Letters Patent No. 447,748, dated March 3, 1891.

Application filed December 1, 1890. Serial No. 373,207. (No model.)

To all whom it may concern.-

Be it known that I, LEWIs W. CLEVELAND, a citizen of the United States, residing at Portland, in the county of Cumberland and State of Maine, have invented certain new and useful Improvements in Electrical Door -Bell Pulls; 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.

Figure 1 is a perspective view of this device. Fig. 2 is a central longitudinal section of the device, showing the pull at rest. Fig.

5 3 is a like view, but showing the pull as in position when the bell is being rung.

This invention belongs to that class of devices known as electrical door-bell pulls, and the novelty consists in the construction and combination of the parts in the manner and for the purposes which will hereinafter be fully set forth and claimed, reference being had to the accompanying drawings. The chief trouble with all electric arrangements for door-bell pulls is that the electric points or binding-posts are more or less exposed to the action of the weather, and when the weather is wet or damp there is a constant leakage and wearing of the batteries and they soon give out. The aim of the present invention is to overcome this.

In the drawings,Arepresents any ordinary handle for a bell-pull, and B the escutcheon fixed to the door-frame. This escutcheon is 3 5 recessed on its face at b about the central opening I) through it to afford a seat for the end of the shank C6 of the pull. On the inner face side of the escutcheon is fixed the 1101- low projection 12*, to which the cylinder or sleeve C is fixed at one end by screws 0. This cylinder has inside of it the most of the operative or movable parts of the device, and is of proper length and size for that purpose.

The spindle a of the pull is located within the cylinder C, and is adapted to be moved back and forth therein through the projection Z2 and the opening I) in the escutcheon. Between its end and the inner face of the escutcheonis placed around the spindle the 50 spiral spring D, by means of which the handle is automatically returned to position and kept normally against the escutcheon, as shown in Fig. 2. When the pull is drawn out, as in Fig. 3, to ring the bell, the metal spindle E, which isbeyond but in alignment with the pull-spindle a, is forced inward by the spiral spring F about it, fixed between its headed end eand the hard-rubber piece G, which is fastened by any suitable means in the outer end of the cylinder or sleeve C, leaving a portion of it beyond the cylinder. This movement of the spindle E brings its metallic head e in contact with the binding-posts H H, fixed in said hard rubber and completes the electric circuit between the wires I I. I/Vhen the connection is made the spindle E is completely insulated. This device is very simple in its structure and prevents any leakage of the batteries, the

hard rubber that carries the binding-posts being placed beyond the access of dampness or the effect of the weather. Its parts are very easily reached for repairs. \Vhile it is not broadly new to make connectionsof the electric circuit by means of a pull-spindle having a spring about it, yet in my device the hard rubber is permanently and securely fixed, and the binding-posts are in like manner secured and firmly fixed in position therein. The circuit is made by direct contact with the said binding-posts of an independent and spring-actuated piece of metal, and best of all, when the electric circuit is complete there is no danger of its being interrupted by reason of contact with any other parts, since the means that effect the closure of the circuit are themselves insulated in fact.

Having thus described my invention, I claim 1. In an electrical door-bell pull, the combination of the handle and spring about its spindle, whereby it is normally held in place, with a second spring-actuated spindle and the insulating material through which said spindle is movable, and the binding-posts in 95 said material, whereby when the handle and its spindle are drawn out said second spindle is insulated by its spring action and makes connection between said binding-posts, substantially as described.

In combination with a door-cscutchcon and a metal cylinder C, fixed thereto at one end, the handle A and its spindle and the spring about it inside said cylinder, and the hard rubber G, fixed in the opposite end of the cylinder and projecting beyond said cylinder, and the binding-posts and spring-actuated and headed spindle E, substantially as and for the purposes set forth.

3. In an electric door-bell pull, the combination of the spring-actuated handle and the insulating material and binding-posts therein with the second spring-actuated spindle in alignment with the first spindle, movable through said insulating material, and all in the manner and for the purposes described.

4. In an electric door-bell pull, substantially as described, the combination of the door-cscutcheon and sleeves or cylinder at tached thereto, the hard-rubber or insulating malerial secured in and to the outer end of said sleeve or cylinder, and the bindingposts secured to said material, and the headed and spring-actuated metal spindle movable within said sleeve or cylinder and also through said insulating material, and the handle and its connections normally holding said headed spindle out of contact with the binding-posts, substantially as and for the purposes set forth. In testimony whereof I affix mysig'natu re in presence of two Witnesses.

LElVIS V. CLEVELAND.

\Vitnesses:

D. O. O. ODoNoeHUE, HENRY J. CONLEY.

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