US1427909A

US1427909A - Typewriting machine

Info

Publication number: US1427909A
Authority: US
Publication date: 1922-09-05
Anticipated expiration: 1939-09-05

Description

E. A. PETERSON.

TYPEWRITING MACHINE.

APPUCAIION FILED SEPT. 21, 1920.

1,427,909, PatentedSept. 5, 1922.

Patented Sept. 5, 1 922.

UNITED STATES PATENT oFFicE.

I EDWIN A. PETERSON, OF MADfSON, WISCONSIN, ASSIGNOR TO UNDERWOOD TYPE WRITER COMPANY, OF NEW YORKQIQ'. Y., A CORPORATION OF DELAWARE.

I ryrnwnrrrne MACHINE.

Application filed September 21 1929. serial No. 411,716.

To all whom it may concern.-

Be it known that I, EDWIN A. Pn'rnnsoN, a citizen of the United States, residing in Madison, in the county of Dane and State of WVisconsin, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

This invention relates to typewriters, and particularly to the means for supporting a sheet of paper on the platen so that the top margin thereof may be written on close to i the leading edge.

A feature of the invention resides in the provision of means for holding the top edge part of the paper against the front surface of the platen, closely adjacent to the printing point, so that the extreme top edge part will receive the printing strokes from the type. To this end, the usual envelope-holding arm is modified, preferably by providing thereon, a downwardly-extending resilient auXiliaryarm having a roller at the free end thereof, said roller pressing rearwardly againstthe top edge part of the sheet of paper to be written upon, near to and just above the types in their printing position,

the leading edge of the sheet being free from the sheetholding end of said envelope-holding arm. I

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a perspective View and Figure .2 a side elevation of my improved device.

Referring to the drawings, 1 indicates the usual platen of an Underwood typewriting machine, and 2 the front bar of the usual carriage, to, which is pivoted the usual envelope-guide-arm 3 having a roller 4. at the free end thereof, said arm 3 being loosely pivotally supported at 5 by brackets 6 extending' from the front carriage bar 2, as shown.

The pivot-hole in the forward pivoted end of the arm 3, for the vertical pivot-pin 5, is tapered to flare upwardly, as shown in broken lines in Figure 2, and the roller 4 at the rear or free end of the arm 3 is pressed downwardly upon the crown of the platen 1 by means of a leaf-spring 6' secured to the front bar 2 of the carriage and pressing forwardly against the rear pivoted end of the arm 3 so as to have a tendency to swing the arm 3 downwardly. Also the rear end of the arm 3 so shaped thatthe spring 6 will hold said arm 3 either at its operative or non-operative position, as is usuaL.

It often happens that it is desired to write at the extreme top of a sheet, and this cannot be readily done in the machine as at present constructed, for the reason that the paper-engaging part of the envelope-guide,

such as the roller 4, comes too far up to press numbering pages of a letter orgmanuscript.

My invention provides a ready means by which the paper may be securely held so that its extremeupper margin or edge part may be written upon, and, to this end, I pivot on the envelope-guide-arm or main arm 3, by means of a horizontal pivot-pin 6 a short downwardly-extending auxiliary arm 7, at thefree end of which is provided an auxiliary paper-holding roller 8, the arm '7 being pressed rearwardly-by a spring 9, to press the roller 8 rearwardly against the front of the platen, just above and in close proximity to the type-head 9 inthe writing position of the latter, as shown in Figure 2. The roller 8 is prevented from moving too closely to or into contact with the main paper-holding roller 4: by means of a pin 10 on the arm 3, against which the arm 7 may abut, when the envelope-guide-arm 3 is swung to one side. When, however, the arm 7 is in position so that the roller 8 bears against the platen, the spring 9 isunder tension, as shown in the drawings. The paper is shown at 11 with its upper or leading edge at the front of and free from the downwardly-pressing roller 4 and above the rearwardly-pressing roller 8, and with its upper edge part pressed rearwardly against the platen 1 by the roller 8, just above and in close proximity to the type-head 9 When the envelope-guide-arm 3 is in its operative position, the upper edge part of the paper is held so that the type on the type-head 9 carried by the type-bar 12 (Figure 1) may strike near the top edge thereof.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim 1. In a typewriting machine, the combination with a platen, a carriage therefor, and types to strike against the front of the platen, of a rearwardly-extending arm loosely pivoted on thecarriage to swing laterally and vertically and spring-pressed to press downwardlyatits free end towards the crown of the platen, a roll upon the end of said arm, and a second roll loosely mounted upon said arm for substantially horizontal independent movement or pressure rearwardly against the front of the platen and spring-pressed rearwardly against the front of the platen, said second roll {mounted to occupy a position above and in close proximity to the types in their printing positions, to press against the platen, a sheet being typed close to its leading'edge.

2. In a typewriting machine, the combination witha platen, a carriage therefor, and types to strike against the front of the platen, of a rearwardly-extending main paper-holding arm loosely pivoted on the carriage to swing laterally to or from operative position and toswing vertically to or from the platen andhaving a main paperholding roller at its free end, said paperholding arm being spring-pressed downwardly to press said roller downward upon the crown of the platen, and an auxiliary paper-holding arm pivoted upon a transversely horizontal pivot upon said main paper-holding, arm and extending clown- Wardly therefrom and provided at its lower end with anauxiliary paper-holding roller, said auxiliary paper-holding arm bein independently spring-pressed rearwardly to press its roller rearwardly against the front of the platen above and in close proximity to the types in their printing positions, to press against the platen a sheet being typed close to its leading edge.

3. In a typewriting machine, the combinationwith a platen, a carriage therefor, and types to strike against the front of the platen, of a rearwardly-extendin main paper-holding arm loosely pivoted on the carriage to swing laterally to or from operative position and to swing'vertically to or from the platen and having a main paperholding roller at its free end, said paperholding arm being spring-pressed 'downwardly to press said roller downward upon the crown of the platen, an'auxiliary paperholding arm pivoted upon a transversely horizontal pivot upon said main paperholding arm and extendin downwardly therefrom and provided at its lower end with'an auxiliary paper-holding roller, said auxiliary paper-holding arm being independently spring-pressed rearwardly to press its roller rearwardly against the front of the platen above and in close proximity to the types intheir printing positions, to press against the platen a sheet being typed close to its leading edge, and a stop on the main paper-holding arm for the auxiliary paper-holding arm to limit the movement of the auxiliary paper-holdin roller towards the main paper-holding roller when said main paper-holding arm is swung laterally away from the platen to free both of said rollers therefrom.

EDWIN A. PETERSON.

Witnesses KING M. BACON, ANITA M. WILKE.