US1114532A - Ink-ribbon guide for type-writing machines. - Google Patents

Description

M. B. SARGENT & A. E. KARLBERG.

INK RIBBON GUIDE FOR TYPE WRITING MACHINES.

APPLICATION FILED JULY 2', 1914.

Patented Oct. 20, 1914.

UNITED STATES PATENT OFFICE.

MARSHALL BIDWELL SARGENT AND ARVID EMANUEL KARLBERG, 0F INDIANAPOLIS, INDIANA, ASSIGNORS T0 THE STENOTYPE COMPANY, OF INDIANAPOLIS, INDIANA.

INK-RIBBON GUIDE FOB TYPE-WRITING MACHINES.

Specication of Letters Patent.

Patented Oct. 20, 1914.

Application led July 2, 1914. Serial No. 848,619,

To all whom it may concern Be it known that we, MARSHALL B. SAR- GENT and Alivio E. KARLBERG, citizens of the United States, residents of Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Ink-Ribbon Guides for Ty )e-VVriting Machines; and we do hereby dec are the followin to be a full, clear, and exact description o the invention, such as will enable others skilled in the art to which it a pertains to make and use the same.

T 1s invention relates to improvements in ink-ribbon guides for typewriting machines and more particularly to such as are adapt ed for use on stenographic writing machines in which the inking ribbon 'is disposed over the top of the frame and moves in a horizontal plane between the type and the platen,the object of our present invention being to provide a simple and eflicient mounting for the ink-ribbon idle guide spools, whereby said spools may be readily shifted vertically to change the ribbon path and held in positions to which they may be shifted.

With this and other objects in View, the invention consists in certain novel features of construction and combinations of parts as hereinafter set forth and pointed out in the claims.

In the accompanying drawingsFigure 1 ,is a plan view of a portion of a stenographic writing machine, showing the application of our improvements; Figs. 2 and 3 are enlarged sectional views, Fig. 4 is a transverse sectional View, and Fig. 5 is a view showing the parts separated.

1 represents a portion of the frame of the machine; 2 the type bars; 3 the platen and 4 the ink-ribbon reels. Idler guide spools 5 are located over the frame near respective ends of the set of type bars and the platen, and ink-ribbon 6 as it is fed from one rcel to the other, passed about the idler spools 5 which serve to guide said rib-1 bon properly between the type faces and the platen.

Our present invention has reference particularly to the manner of mounting the idler guide spools 5 whereby they may be raised or lowered to change the ribbon path to present a new or fresh portion of the ribbon to 'the action of the type.

Near each end of the platen, a sleeve 7 is passed through the top frame plate 1 of the machine and suitably secured in place, the major portion of each sleeve being made to depend below the under face of said frame-plate.

Each sleeve 7 serves to receive the lower portion of a post 8, and upon the upper portion of the latter, an idler guide spool 5 is mounted to rotate freely,--vertical displacement of said spool on the post being prevented by the head of a screw 9 entering the upper end of the post, and such displacement in a downwardly direction being prevented by an annular flange 10 on the ost.

That portion of the post 8 which passes through the sleeve 7 is made with a longitudinal groove or key-way l1 to receive one end of a screw 12 passing through the wall ofthe sleeve 7 and serving as a key to prevent rotation of the post and yet permit vertical movement of the latter to raise 0r lower the idler guide spool to shift the horizontal plane of the ink-ribbon and thus alter the path of said ribbon relatively to the printing means.

The post 8 is made with a plurality of recesses 13 (two being shown in the drawing) arranged in vertical alinement, and adapted to receive a locking ball 14 mounted in a hole 15 in the wall of the sleeve. This ball is pressed against the post and into engagement with one or the other of the sockets or recess 13, by means of a spring 16 for the purpose of normally retaining the post and the idler spool which it carries, in the position to which the same may be shifted. The spring 16 is made to partially embrace the sleeve 7. one of its ends being secured by the head of the screw 12 and its free end portion being caused to engage the locking ball 14 and press the same inwardly.

A screw 17 enters the lower end of the post 8 and its head overlies the lower end of the sleeve 5 so as to prevent excessive vertical movement or displacement of the ost.

p Having fully described our invention what we claim as new and desire to secure by Letters-Patent, is

1. A guide spool mounting comprising a fixed sleeve` a post having a part movable longitudinally through said sleeve, means for preventing rotation of said. post, and spring-actuated locking means for holding said post in different positions of longitudinal adjustment.

2. A guide spoolmounting comprisin a fixed sleeve a post having a part mova 1e longitudina 1y through said sleeve, means for preventing rotatlon of said post said post having a plurality of recesses and -said sleeve having a hole in its wall, a ball mounted in said hole, and a spring pressing said ball toward the post and into one of the recesses therein.

3. The combination with the frame of a typewriting machine, of a sleeve passing through and xed to said frame, a post movable longitudinally through said sleeve, an idler spool mounted to rotate freely on said post, means for preventing rotation of the post said ost having a plurality of notches and the s eeve having a hole in its wall, a ball mounted in said hole and adapted to engage in one or another of said notches, and a sprino' embracing said sleeve and pressing said ball inwardly.

4. The combination with the frame plate of a typewriting machine, of a sleeve passing through and fixed to said frame-plate, a post having a part vertically movable through said sleeve, a spool freely rotatable on said ost, said post having a ke -way and a plurality of recesses, and the s eeve having a hole in its wall, a ball mounted in said hole and adapted to enter one or another of said recesses, a screw passing through the wall of the sleeve and entering the key-Way in the post, and a spring secured at one end by said screw and having its free end portion in position to engage said ball.

In testimony whereof, we have signed this specification in the presence of two subscribing witnesses,

MARSHALL BIDWELL SARGENT. AEVID EMANUEL KARLBERG. Witnesses:

J. S. SWEENEY, H. B. WATKINS.

Oopiel o! this patent may be obtained for ive cents each, by addressing the Commissioner of Patents, Washington, D. 0."

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