US1929981A

US1929981A - Type-bar rest for typewriters

Info

Publication number: US1929981A
Application number: US488275A
Authority: US
Inventors: James F Koca
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-10-13
Filing date: 1930-10-13
Publication date: 1933-10-10
Anticipated expiration: 1950-10-10

Description

Oct. 10, 1933.

J. F. KocA TYPE BAR REST FOR TYPEWRITERS Filed Oct. 13 1930 Patented Oct. 10, 1933 UNITED STATES PATENT OFFKIE.

3 Claims.

This invention relates to a typewriter and particularly to that portion of a typewriter upon which the type-bars rest when they are out of operation. The principal object of the invention is to simplify the construction shown in the Roebuck Patent No. 1,265,859, granted May 21, 1918, for Type-bar rest.

Another object of the invention is to provide a suitable cushion for the type-bars combined with means for holding the cushion in place with abutments at the ends thereof.

Another object of the invention is the provision of a tubular type-bar rest of rubber or similar elastic material.

Other objects of the invention will appear hereinafter, the novel features and combinations being set forth in the appended claims.

In the accompanying drawing Fig. 1 is a perspective View of a portion of the top plate of a typewriting machine with a curved portion in which the cushioning material of the type-bar rest is adapted to be seated;

Fig. 2 is a view in elevation showing the typebar rest in section with the cushion in elevation;

Fig. 3 is an elevational view of the central portion of the cushion with a wear strip thereon;

Fig. 4 is an elevational view of a tubular cushion without a wear strip;

Fig. 5 is a sectional view taken on the line 5-5 of Fig. 2 looking in the direction of the arrows; and

Fig. 6 is a sectional view taken on the line 66 of Fig. 3 looking in the direction of the arrows.

In Fig. 1, a portion of the top frame of a typewriting machine is shown at 7 and integrally formed therewith is a concavely curved or crescentshaped support 8, which is grooved at 9 on its upper side to form a recess substantially semi-circular in cross-section to receive the cylindrical, tubular cushion 10, which is preferably composed of rubber or similar resilient material.

At the ends of the arcuate type-bar rest 8 are openings 11 to provide freedom of movement of the ends 12 of the cushion behind the abutments at the top plate '7, one of which abutments As shown in Fig. 5, the legs 1'7 pass through the opening 16 in the bottom of the arcuate frame 8. The ends 18 are bent against the bottom edges of the opening 16 to firmly secure or rivet the tubular cushion'lO to the frame 8, while the ends 12 of the cushion are at the abutments 13. It will thus be seen that the clip 15 Will hold the tubular cushion bent to conform with the arcuate frame 8 while longitudinal movement of the cushion 10 along the recess 9 is prevented by the abutments 13. It should also be understood that the tubular cushions may originally be rectilinear tubes but by reason of the holding clips and the end abutments 13, the cushions will be bent into arcuate form and securely held 7 in place in the groove 9.

It should also be noted that the lateral walls of the end openings 11 afford side abutments for the end portions of the cushion 10. Therefore, the end openings 11 form recesses to prevent lateral play and thus co-act with the clips 15 to hold the cushion 10 in the groove 9. While the drawing indicates only one clip 15, there may be a plurality of them spaced apart and disposed between the ends of the frame 8.

Inasmuch as a cushion of tubular rubber has been found to be very effective in greatly minimizing the rebound of the type-bars, a strip of leather or other flexible material 12 may be cemented to the upper portion of the tubular cushion 10 as shown in Fig. 3, to act as a wear strip to be replaced when worn out. While such wear strip may be composed of fabric, the tubular cushion 10 should be of solid rubber with sufficient resiliency to act as a dead-stop for the 90 type-bars by preventing rebound thereof.

Obviously those skilled in the art may make various changes in the details and arrangement of parts without departing from the spirit and scope of the invention as defined by the claims hereto appended and I wish therefore not to be restricted to the precise construction herein disclosed.

Having thus described and shown an embodiment of my invention, what I desire to secure by Letters Patent of the United States is:

1. In a typewriting machine, the combination with a top frame plate formed at the front with a portion curved downwardly at the center and having an upwardly opening longitudinal recess with a perforation in its bottom, of an anti-rebound cushiondisposed in said recess, and a wire extending through said cushion and having its ends passed through said perforation and bent 1'10 3. A type-bar rest comprising an arcuate frame, a. cushion mounted thereon, end abutments for said cushion, spaced-apart Walls adjacent said abutments formed by openings in the ends of said frame, said spaced walls forming spaces adjacent the abutments to receive the ends of the cushion and support them laterally in abutting relationship with the abutments, and means for securing said cushion to said frame.

JAMES F. KOCA.