US770549A - Gustave a - Google Patents

Description

PATENTED SEPT. 20, 1904.

G. A. ZUNDBL.

KEY FRAME.

APPLIGATION HLBD MAR. 1891903.

NO MODEL.

GUSTAVE A. ZUNDEL,

Patented September 20, 1904.

PATENT Orricn.

OF NEW YORK, N. Y.

KEY-FRAME.

SPECIFICATION forming part of Letters Patent No. 770,549, dated September 20, 1904.

Application led March 18, 1903.

T0 LZZ zzz/1,07% t may concern:

Be it known that I, GUSTAVE A. ZUNDEL, a citizen of the United States, residing in New York, borough of Manhattan, and State of New York, have invented certain new and useful Improvements in Key-Frames, of which the following is a specification.

The object of this invention is to provide a cheap and durable supporting -frame for a Morse key. These keys have been hitherto mounted upon frames provided with adjustable screws forming bearings for the bearingpoints of the key-arbor. The object of this invention is to provide a bearing for said arbor which does not require the employment of these bearing-screws, such a frame being especially desirable for the cheaper grades of instruments, such as learners sets.

For this purpose the invention consists of a key frame comprising a base portion and bearing-standards rising one at each side of said base and provided each at its upper portion with an entrance-slot for the journal or bearing portion of the key-lever and at the inner portion of said entrance-slot with an upwardlyextending bearing-socket adapted to receive said journals.

The invention consists, further, in certain details of construction and combinations of parts, which will be fully described hereinafter and iinally pointed out in the claims.

In the accompanying drawings, Figure l is a perspective View of a telegraph-key provided with my improved key-frame. Fig. 2 is a plan View of the sheet-metal blank from which the key is formed. Fig. 3 is a plan view of the completed key-frame, and Fig. 4 is a vertical longitudinal section on line 4 4, Fig. 3.

Similar letters of reference indicate corresponding parts.

Referring to the drawing, A indicates the blank of my improved key-frame. Said blank is formed from sheet metal-such, forexample, as sheet-iron of approximately onesixteenth of an inch in thickness. It is shaped by being stamped, sawed, or otherwise cut from the sheet. Said blank consists of a body portion a and two oppositely-located Serial No. 148,292. (No model.)

arms a, one at each side of said body portion extending laterally therefrom in opposite directions. Each is provided with a recess or slot a2, extending transversely from the forward edge of the arm inwardly (rearwardly) to approximately the middle of the same. At their inner ends or portions said recesses a2 merge into sockets a3, located at the outer side of said recesses a2ac'. e., at that side of the same toward the ends of said arms a' and removed from the body portion a. At its forward portion said body portion of the blank is provided with two openings 05, arranged approximately on the longitudinal center line of the same. At its rear portion said body portion o is provided with a threaded opening a, also arranged approximately on the longitudinal center line of the body portion a. At its left sident'. c., at the left hand side of the center line of said body portion -is arranged in the body portion an opening a7.

For forming the key-frame from said blank the laterally-extending arms a are bent in upward direction, so as to stand approximately parallel and vertical. By this operation the sockets a3 are brought into position at the upper sides of the recesses a2, the recesses and sockets of one standard being located opposite those of the other standards. Said key-frame is secured to the base Boi1 the telegraph instrument by means of a screw passing upward through said base and engaging in the threaded opening a6. It is also secured by a screw which passes upwardly through the opening a7 and which forms also the pivot for the switch-lever b2 and by a screw passing in upward direction through the base B, opening and insulating-washer fand into the contact b5. O indicates the key-lever, which is provided with laterallyextending journals or bearing portions c, adapted to enter the recesses a2 of the bearing-standards a/ of the key-frame and to be seated in the sockets a3 of said bearing-standards. c' indicates a key-spring which is arranged beneath the lever at the forward side y of the bearings o. Said spring c' is a coilspring and is located at its lower portion in the opening a5 of the base a of the key-frame. It rests upon the base B of the instrument.

IOO

- At its upper end it bears against the under side of the key-lever C between the bearings c and the key-grip CZ. c2 indicates an adjusting-screw at the rear of the key, said screw bearing at its lower end upon the rear portion ofthe base a of the keyframe. By this construction the spring maintains the journals 0 of the key-lever constantly in raised position yieldingly in the sockets as. r)The entire key is thereby retained in proper position.

It is obvious that the entrance-recesses t2 may be inclined instead of horizontal, as shown in the drawings. That portion of each standard adjacent and below the bearing-socket o1c the same forms a guide, aiding in the insertion of the journal into the bearing-socket. It also forms an abutment which, being located adjacent and opposite the open side of the socket, serves for preventing ready dislodgment of the journal.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination of a sheet-metal keyframe, comprising a base and standards, said standards each provided with a recess extending horizontally into the same from the edge thereof, a bearing-socket in each standard communicating with said recess, a key having journals adapted to enter said recesses and sockets, and means retaining said journals yieldingly therein, substantially as set forth'.

2. The combination of a key-frame, comprising two standards, a bearing-socket in one standard, a bearing-socket in the other standard, a recess extending horizontally into the latter standard and communicating with said bearing-socket of the same, a key having a journal adapted to enter said first socket, and

a journal adapted to enter said recess and socket, and means retaining said journals yieldingly in said sockets, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

GUSTAVE A. ZUNDEL.

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