US1368620A - Typewriting-machine - Google Patents

Description

G. H. FOSTER.

TYPEWHITING MACHINE.

APPLICATION FILED JUNE 19, 1919.

Patented Feb. 15, 1921.

2 SHEETSSHEET I.

G.. H. FOSTER.

'TYPEWRITING MACHINE.

APPLICATION FILED JUNE19, 1919.

2 SHEETSSHEET 2.

men/0r:

Patented Feb. 15,

UNITED STATES PATENT OFFIOE.

GEORGE E. FOSTER, OF HARTFORD, CONNEOTICUT,'ASSIGNOR TO UNDERWOOD TYPE- WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE;

TYPEWRITING-MAGHINE.

Specification of Letters Patent. Patented Feb. 15, 1921.

Application filed June 19, 1919. Serial No. 305,224.

T all/whom it may concern:

Be it known that I, GEORGE H. Fos'rnn, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Typewriting-Machines, of which the following is a specification.

This invention relates to typewriting ma chines, and is herein disclosed as applied to an Underwood standard typewriting machine, in which the types strike against the front side of a platen in printin In writing machines like the Underwood typewriting machine and others, which are known as visible writers, the typist has the great advantage of seeing the written work.

t is, however, often advantageous to conceal the written work, either because it is confidential and therefore should be hidden from view of those who might make it pub lic property, or because the typist wishes to conceal the written work, as, for example, in practising some systems of typewriting.

According to the present invention, the typewriting or other machine may be pro vided with a device in the form ofa shield or screen, which is adapted to be positioned so that it may keep much or all of the writing covered, or may be swung to ineffective position, leaving the writing open to view. The device is herein disclosed as comprising a thin sheet-metal screen,

upon a rod so that it may be swung to various angles, said rod being mounted upon brackets by means of swinging arms, thus permitting the screen to be swung on the swinging arms either to the effective position or to the ineffective position at the rear of the typewriter carriage. The screen advantageously swings on its journals close to the front bar of the carriage if adjusted to the angle at which it conceals the whole of the writing. It may, however, be swung to other angles to leave open to view one or more lines of writing. The rod on' which the screen is swung may also carry upper front feedrolls, which are adapted to guide the typewritten sheet rearward'ly over the top of the platen.

Otherfeatures and advantages will hereinafter appear. 7

In the accompanying drawings,

Figure 1 is a perspective view, largely diawhich is journaled grammatic, of an Underwood typewriter carriage, showing the present invention as applied thereto.

Fig. 2 is a perspective detail, showing the mounting of the rod.

Fig. 3 is a perspective view of one of the swinging arms.

Fig. 4 is a sectional side view showing the screen in two positions in which it substantially conceals the writing line.

Fig. 5 is a view similar to Fig. i, but showing the screen swung to allow several lines of writing to be visible. 7

Fig. 6 is a similar view, showing the screen swung to ineii'ective position at the rear of the carriage.

In the usual Underwood typewriting machine, the traveling carriage 10 includes a platen frame 11, in which is journaled a platen 12 by means of its axle 13 which passes through end plates 14: and 15 of the platen frame. As the typewriter carriage travels along, it carried with it a work-sheet 16 passed around the platen to enable types 17 to print upon it at the writing line, which falls substantially at the top of the usual wing scales 18. In order to hold the worksheet 16 upon the platen, it passes down over a rear paper table 19, and is held against the platen by the usual feed-rolls 20 and 21, and the end of the work-sheet is bent rearwardly over the top of the platen by top front feed-rolls 22 which will be described later.

In writing upon the work-sheet 16,,with the parts positioned, as shown in Fig. l, the typist has the writing in View, the typist looking over the front bar 23 of the typewriter carriage. In order to conceal the lines above the one actually written, a shield or screen 24 may be provided, held by means of screws 25 to brackets 26 splined to a rod 27 extending across the front of the shift frame.

In order to support the rod 27-there are provided arms 28 and 29 pivoted to their brackets 30 and 31 formed as the turned-up ears of plates 32 and 33, which are adapter to be held to the top cover plates 34; and 35 of the ends it and 15, by means of screws 36 adapted to fit into the usual screw holes which hold the cover plates 3% and 35 upon the ends 14 and 15. The ears or brackets 30 p the combination with a revoluble platen and a platen frame having ends, of a rod supported by said ends, a front bar forming part of the carriage carrying the frame, a flat stiff screen upon said bar and adapted to be swung to and from the front bar to conceal more or less of the written lines, journals in which said rod is carried, and a finger-piece fast to said rod to swing the screen.

6. In a front-strike typewriting machine, the combination with a revoluble platen and a platen frame having ends, of a rod supported by said ends, a front bar forming part of the carriage carrying frame, a flat stiff screen upon said bar and adapted to he swung to and from the front dear to conceal more or less of the written lines, journals in which said rod is carried, a fingerpiece fast to said rod to swing the screen, arms carrying; said journals, ears upon said ends to which said arms are pivoted, and other arms pivoted to said ears and connected to the first arms to detain the screen in 1ts ad usted position.

7. In a front-strike typewritmg machine the combination with a revoluble platen and a platen frame having ends, of a rod supported by said ends, a front bar forming part of the carriage carrying the frame, a flat stiff screen upon said bar and adapted to be swung to and from the front bar to conceal more or less of the written lines, journals in which said rod is carried, a finger-piece fast to said rod to swing the screen, arms carrying said journals ears upon said ends to which said arms are pivoted, other arms pivoted to said ears and connected to the first arms to detain the screen in its adjusted position, and front feed'rolls connected to said first arms and adapted to limit their throw.

GEORGE H. FOSTER. Witnesses FRANK A. Coon, WILLIAM P. SMITH.

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