US529826A

US529826A - Edgae s

Info

Publication number: US529826A
Authority: US
Publication date: 1894-11-27
Anticipated expiration: 1911-11-27

Description

(No Model.)

E. S. COMES.

TELEPHONE SWITCH.

Patented Nov.- 27,1894l UNITED STATES PATENT OFFIcII EDGAR S. OOMBS, OF ROCHESTER, NEW YORK, ASSIGNOR OF ONE-HALF TO IRVING PAINE, OF SAME PLACE.

II'ELEPHONE-SWITCH.

SPECIFICATION forming part of `Letters Patent No. 529,826, dated November 27, 1894. Appnmion nea october 9,1894. sean N0.525.381 (Nomodel To all whom it may concern.:

Be it known that I, EDGAR S. COMBS, a citizen of the United States, residing at Rochester, in the county of Monroe and State of New York, have invented certain new'and useful Improvements in Telephone-Switches, of which the following is a specification.

My invention relates to telephones, and has reference more particularly to a novel construction of the switch hook as hereinafter set forth and claimed.

In the drawings,-Figure lis a perspective view of my hook; Fig.,2, a similar view, from the opposite side; Figs. 3 and 4, face views, from the side, showing the parts in different positions; and Fig. 5, a planv view.

A indicates a base plate adapted to be secured by screws, or other means, to the box or casing; and B indicates an arm projecting from the front face of the plate at one side of the slot a therein.

Arm B is cut away or slotted from its lower edge upward, to form two smaller dependf ing arms or members b and c,-the former being at the front and having a straight inner wall, and the latter being in rear of member b and having a receding wall, the two members being thus separated by a slot whose mouth is wide enough to receive the eye usually secured to the end of the receiver. g

Projecting from the rear face of plate A, is an arm C, carrying the insulating block d and the contacts c, e', e2, e3.

Pivoted to the arm B is a lever D carrying at its outer end a thumb piece f; on its lower face, a curved arm or hook g; and at its rear inner end, a contact plate h, which is designed to rub over the contacts e when the lever is rocked upon its pivot, and which arm is preferably slitted as at j.

A leaf spring E secured to the rear of plate A is connected at its upper end with a link/L' secured to the lever, the arrangement being such that when the lever is pulled down, the link forces the upper end of the spring away from the plate. The tension of the spring is sufficient to enable it to hold the lever in either of its two positions and prevent its accidental movement.

When the receiver is in place the eye or loop thereof is upon the arm or hook ggof the lever, and is vembraced by, or held upon the hook by meansof the members b c of arm B. When in this position the plate h is over the contacts e2 and e3 and the telephone cut out. By pulling down upon the thumb piece while holding the receiver, the lever will be rocked or tipped, its plate h moved from the vcontacts e2 e3 to the contacts e c', and the hook g swung down away from the members?? o so as to permit the removal of the receiver from the hook of the lever. When it is desired to replace the receiver, its eye is passed up into the slot in arm B,-v between -the members b c and in line with the hook g,-and while the receiver is held in this position by one hand, the lever will be raised by pressing upward upon the thumb piece with the thumb, and the hook carried through the eye.

An important advantage in the present constructionresides in the fact that the receiver cannot be moved from its' locked position by an accidental blow, as frequently occurs with vother devices.

What I' claim is- 1. In combination with plate A having a slot a therein; arm O carrying the insulated block d and contacts; an arm B projecting from the front of the plate and slotted or cut away to receive the eye of the telephone receiver; and a lever pivoted to the arm B and provided with contact plate h and hook g.

2. In combination with plate A having a slot a therein; arm C provided with the insulated block d and contacts; arm B provided with two separated members b c; lever D pivoted to arm B and projecting through slot a; contact plate h; and a hook g carried by the lever. Y

3. In combination with plate A, arms B and C, lever D, and contacts; the leaf spring E secured at one end to the plate; and the link 71 connected at its ends to the spring and the lever.

4. In combination with plate A, and the arms B and O, the latter having block cl and contacts; the lever D having atits end the plate h which is slit as at j,and,working over the contacts.

In witness whereof I hereunto set my hand in the presence of two witnesses.

EDGAR S. COMBS.

ICO