US144274A

US144274A - Improvement in self-closing telegraph-keys

Info

Publication number: US144274A
Authority: US
Publication date: 1873-11-04
Anticipated expiration: 1890-11-04

Description

w. HolmMMSI-:M v Self-Closing Telegraph Keysl No. 1214 27.4, V Patented Nov,4,1a73.

' '/@OZMWM 'vertical axis c.

UNITED STATES PATENT OFFICE `WILLIAM nocnnnusnn, oE NEW vonk, n. Y.

IMPROVEMENT IN SELF-CLOSING TELGRAPH-KEVS.

Specification forming part of Letters Patent No. 144,274, dated November 4, 1873; application filed October 3,1873.

To all 'whom fit may concern.'

Be it known that I, WILLIAM HooHHAUsEN,

\ of the city and State of New York, have inycircuit when the key is not in use, and for opening that circuit when the key is to be manipulated.

, illy present invention relates to a self-closing key, in which the operator breaks the mainline circuit as he commences to manipulate his key, and that circuit is closed bythe key when pressure thereon is relieved, so that a Separate switch or a switch-connection to the key-'is rendered unnecessary. I make use of key-lever that is mounted upon horizontal and vertical axes or centers, the yhorizontal centers or fulcrums allowing of the ordinary movement in manipulating` the key, and the vertical centers allowing the key to be turned aside sufficiently to separate the line-connecting contact-points while the key is being opcrated; but as soon as the key is liberated, a sprin g moves the same lateral] y and closes the ljnecircuit. In-.the drawing, Figure 1 is a vertical section ot' the finger-key, yoke, and frame, the lever being in elevation; and Fig. 2 is a plan of said key complete.

The frame a and horizontal centers b are of usual character; but instead of the centers b receiving the axis or fulcrum of the finger- `key lever c, such centers receive the yoke d,

and the lever c is connected therewith by -the The center-screw f receives one end ot this axis c, and by means thereof the parts are kept closely in contact, and looseness is prevented. The contact-point t' on c and anvil o are of lusual character; but the latter is connected with the bracket g, as well as with the attachingscrew h and upon this bracket g is an adjustingscrew and contactpoint, r, contiguous to a contact-point, s, uponl the lever c. The spring l presses the lever c and point/s toward fr, so that the line-circuit will be closed through the points 1^ s and bracket g when the key is not in use 5 but when the manipulation of the key is commenced the operator first moves the lever o laterally to separate the contact-points 1' and s, and then the movement is given to the key as usual. The spring m serves to raise the nger-key, and the screw u adjusts the amount of movement. The bracket g may be swung around upon either side ot' the leveiI c to suit the convenience of the operator, the spring l being placed upon the opposite side of the lever. Usually the parts will be positioned as shown; but some may prefer to press the key laterally toward the right to separatethe points 1 s, instead of pressing the key toward the left.

I claim as my invention- The telegraphic key in which the lever is mounted upon two centers, to allow of a lateral as well as of a vertical movement, in combination with the circuit-closing points r s, substantially as and for the purposes set forth.

Signed by me this 30th day of September, A. D. 1873.

NV. HOGHHAUSEN.

' T1 lVitncsses GEO. T. PINcKNEv, Units. H. SMITH.