US464897A

US464897A - Telegraph-key

Info

Publication number: US464897A
Authority: US
Publication date: 1891-12-08
Anticipated expiration: 1908-12-08

Description

(No Model.)

L. F. ROBARE. TELEGRAPH KEY.

No. 464,897. Patented Dec. 8, 1891.

WITNESSES: I M/VE/VTOB.

A UNITED STATES PATENT OFFIC LOUIS F. ROBARE, OF AU SABLE FORKS, NE\V YORK.

TELEGRAPH-KEY.

SPECIFICATION forming part of Letters Patent No. 464,897, dated December 8, 1891.

Application filed June 4, 1891. Serial No. 395,149. (No model.)

To aZZ whom it may concern.-

Beit known thatI, LOUIS F. ROBARE, of Au Sable Forks, in the county of Essex and State of New York, have invented a new and Improved Telegraph Key, of which the following is a specification, reference being had to the annexed drawings, forming a part thereof, in Which- Figure l is a side elevation of myimproved telegraph key. Fig. 2 is avertical transverse section taken on line 2 2 in Fig. 1. Fig. 3 is a vertical transverse section taken on line 3 3 in Fig. 1, and Fig. 4 is an inverted plan View.

Similar letters of reference indicate corresponding parts in all the views.

The object of my invention is to construct a simple leglessotelegraph-key from which the the regular binding-posts are omitted.

My invention consists in a legless telegraphkey formed of a base-plate, and pillars forming the hearings of the key-trunnions and serving as binding-posts.

The base A, consisting of a plate of metal, which in the present case is ellipticalin form, is formed integrally with the pillars a a. The pillars a a are provided with projections b, projecting forward parallel with the plate A and having in their under surfaces V- notches c, forming the bearings of the V- shaped trunnions cl of the key B. The key 13 is provided at its rear end with a regulating-screw 6, adapted to strike the base A, and thus regulate the lift of the key, and in front of the trunnions the key is provided with a spring regulating screw f, which reaches through the arm of the key and is bored axially to receive the upper end of a spiral spring 6, the lower end of which rests on the base A. The said spring 9 retains the trunnions d in their bearings and raises the key after it is depressed by the operator. The

key B carries the usual platinum-point 7t, and the anvil-contact i is inserted in the base A and insulated therefrom in the usual manner. The contact 11 is provided with a spring contact-fingerj, for engagement with the switcharm 0 when the circuit of the key is closed.

In the lower part of the pillar a and the portion of the baseplate A adjoining is formed a chamber is. The pillar is bored vertically, and in the chamber and the bore of the pillar is inserted an insulating-piece l, which is bored longitudinally to receive the metallic binding-post m. The binding-post and the insulation are bored transversely to receive the wire it, and a binding-screw 0 is inserted in the longitudinaily-threaded hole in the binding-post min the usual way. The pillar a is bored longitudinally and internally threaded to receive the binding-screw p, and is apertured transversely to receive the wire g, which is held by the bindingscrew.

In the base-plate A are inserted wires 0', which are bent over the insulated portions of the wires 07. q, holding them in contact with the edge of the base-plate, as shown, thus avoiding the necessity of driving staples into the table on which the key is mounted. The binding-post m is connected electrically with the anvil-contact t' by the metallic strip 3, placed in a recess in the under surface of the base-plate and insulated from the base-plate.

'It will thus be seen that the circuit through the key is from the wire TL, through the hinding-post m, the strip .9, the anvil-contactt,the contact 71., and key B, the pillar a and wire q. 'When the switch-arm O is carried under the spring contact-fingerj, the circuit is closed in the usual way.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, with the base, of two pillars Cl. at, having vertical and transverse apertures, screws extending down through the vertical apertures into the transverse apertures to bind the wires, one of said screws and its binding-post being insulated, a key journaled to the said pillars and having the contact h, the contact t', and the plate 8, connecting the contact'i and the said insulated binding-post, substantially as described.

2. In a telegraph-key, the base A, having keysupporting pillars a ct, provided with vertical and transverse intersecting apertures, vertical screws to clamp the wires in the transverse apertures, and the clampingloops r on the outer edge of the base in front of said transverse apertures to bind the wires to the base beyond the binding-posts, substantially as described.

3. In a telegraph-key, the combination, ing-post m, thekeyB,pr0vided with V-shaped with the base-plate A, provided with the piltrunnions d and regulatingscrews e f, and 10 lars a a, having V-notches c for receiving the spring g, substantially as described.

the key-trunnions, the pillar 0t bein made 5 hollow, of the insulation Z, inserted in the pil- LOUIS ROLARE' lar a, the binding-post m, inserted-in the in- Witnesses: sulation Z, the cross-connection 8, connecting LOUIS J. FARLAND,

the anvil-contact z' and the insulated bind- J. MONROE SHEFFIELD.