US354814A

US354814A - steiner

Info

Publication number: US354814A
Authority: US
Publication date: 1886-12-21
Anticipated expiration: 1903-12-21

Description

(No Model.) I I I 2 Sheets-Sheet 1.

J. STEINER.

TELEGRAPH INSTRUMENT.

No. 354,814. Patented Dec. 21, 1886.

q/mtmwm avwembo'c Qf0.5'%' Steinem 351, m mum (No Model.) 2Sheets -S'hee t 2.

J. STBINBR. TELEGRAPH INSTRUMENT.

No. 354,814. Patented Dec, 21, 1886.

f f H I 1 C G H H II. 1 In! h-HM I -n-l M I mmllnuh, ....m 1

wwmeowo gvwawtoz Jose Steiner; 0, 35 M Gum-Head PETERS, Phamunw n her. wavhingioq lija Mrs TATES Enron.

ATENT JOSEF srnnvnn, on BROOKLYN, ASSIGNOR TO HASKINS & srnrnnaon NEW YORK, v. Y.

TELEGRAPH-INSTRUM ENT.

SPECIFICATION forming part of Letters Patent No. 354,814, dated December 21,1886.

' Application filed July 31, 1886.

To all whem it may concern:

Be it known that I, J osn'n STEINER, a -citizen of the United States, residing in Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Telegraph-Instruments, of which the following is a specification.

My invention relates to the construction of the supporting parts of the levers of vari ous forms of electric instruments-such, for instance, as telegraphic keys, sounders, -relays, &c. I

The object of the invention is to provide a convenient, economical, and efficient form of support, and one which may be easily and accurately adjusted.

The invention consists, in general terms, in supporting the lever by means of a flat resilient spring, one end of which is secured to the frame or body of the instrument, while the other end is secured to the lever. Between the two ends of the spring there extends a rigid shoulder or fulcrum, upon which the spring rests, and across which it bends when the lever is operated. Suitable means are provided for modifying the pressure exerted upon the spring between the shoulder and the support or frame, thereby giving to the lever a greater or less tendency to move in the opposite direction. This may be accomplished in various ways. The method shown in the present instance consists simply of an adjustingscrew, which by bearing against the spring tends to rock it upon the shoulder or fulcrum. The greater the pressure of the screw, the greater will be the force required to actuate the lever.

In the accompanying drawings, Figures 1 and 2 are respectively a plan and a side elevation of a telegraphic key embodying the features of the invention, and Figs. 3 and 4 are like views of a telegraphic sounder. In another application of even date herewith there is shown a special form of adjustment for devices of this character.

Referring to thefigures, A represents th support or base of a key, and Ba key-lever. A spring, 0, is secured at one end to the base by a screw, 0. The other end of the spring is secured to the lever B by means of a suitable clamp, b,which may be brazed or in any other suitable way fastened to the lever. The sup- Serial No. 209,605. (No model.)

port A is hollowed beneath the spring 0, as shown at d, and the spring rests against the shoulder or fulcrum a, extending fromthe base, near the point of attachment, to the lever. It is evident that when the lever is depressed the spring must bend across the shoulder or fulcrum, and for the purpose of modifying the effort required to move the lever,

and thusbend the spring, means are provided for causing the portion of the spring upon the side of the shoulder opposite the lever to be pressed down with more or less force, as required. A convenient method of accomplishing this consistsin extending athreaded screwrod, f, upward from the base through an opening in the spring. A nut,f, turning upon this screw, presses against the spring, causing it to be depressed into the cavity d more or less, as required.

The key is provided with the usual anvil, g, and circuitclosing point g. The screw-post h, which is employed for holding the switch H in position, extends upward through the body of the key-lever, and is provided with a set-screw, h, for limiting the play of the keylever. Two posts, K K which are employed for holding the key to the table, may be respectively the posts receiving the screw 0 and the anvil g. The leverB of the sounder shown in Figs. 3 and 4 is supported in essentially the same manner, such modifications in construction being made as are required to adapt it to the special application. v

The suppoitingpost M, extending from the base of the instrun1ent,'carries the plate M, to which the spring 0 is attached by means of the screw 0. The support M is provided with the shoulderor fulcrum a, and the lever B is attached to the spring beyond the shoulder in any convenient manner. This instrument is also equipped with an adj usting-screw, f, and nut, f, acting in the same manner as those employed upon the key.

I claim as my invention- 1 In a telegraphic instrument, a movable lever, a spring supporting the lever, an adjustable support for one end of the spring, and a fulcrum for said spring between the support and the lever.

2. In a telegraphic instrument, a lever, a spring supporting the lever, a rigid support at one end, a transverse fulcrum forsaid spring,

fulcrum for the spring, and an adjusting device for modifying thepressure ofthe spring against said fulcrum.

In testimony whereof I have hereunto sub- 15 scribed my name this 27th day of July, A. D. 1886.

JosEF STEINER;

Witnesses:

DANL. W. EDGECOMB, CHARLES A. TERRY.