US2896768A

US2896768A - Typewriter attachment

Info

Publication number: US2896768A
Application number: US495578A
Authority: US
Inventors: Doolittle Donald
Original assignee: Individual
Current assignee: Individual
Priority date: 1955-03-21
Filing date: 1955-03-21
Publication date: 1959-07-28
Anticipated expiration: 1976-07-28

Description

July 2s, 1959 D DOOUTTLE 2,896,768

TYPEWRITER ATTACHMENT Filed March 21, 1955 ATTORNEYS Uni-ted .States Patent `C) TYPEWRITER ATTACHMENT Donald Doolittle, San Gabriel, Calif.

Application March 21, 1955, Serial No. 495,578

2 Claims. (Cl. 197-133) tinuous sheet, thereby eliminating the necessityv of feeding separate sheets onto the platen.

Another object of the invention is to provide an at tachment of extremely few and simple parts which may be quickly and readily applied or removed.

A further object of the invention resides in the provision for disassembling the attachment in such a manner that it is easily portable.

Still another object of the invention residesy in the provision of an ample length of supporting and translating paper roll carrying shaft which is free to move in the same direction as the platen, thereby carrying the paper in the same relation to the platen, in every direction of movement of the platen, relative to the carriage of the typewriter.

Other objects and advantages of the invention will be apparent from the following detailed description, taken in connection with the accompanying drawing wherein I have shown the preferred form in which I have thus far contemplated applying the principles of the invention.

Referring to the drawing:

Figure l is a side elevational view of a typewriting machine showing my improvedl attachment mounted thereon,

Fig. 2 is a vertical sectional view, taken on line 2--2 of Fig. l, the attachment being shown in elevation.

Fig. 3 is a fragmentary vertical sectional view taken on line 3-3 of Fig. 2.

Fig. 4 is a fragmentary elevational view of the paper in roll form used with the attachment.

Referring to the drawing in detail, the numeral 10 designates the frame of a conventional typewriter, and the numeral 11 indicates the usual carriage operatively mounted thereon, said carriage being provided with the usual platen 12. The attachment includes a bar 16 to which the upwardly and rearwardly projecting supporting arms 13 are secured. These arms 13 are provided with notches 14 in the upper ends thereof providing bearings, in which a paper roll supporting shaft 15 rests to permit said shaft to rotate within said bearings and at same time permit translational movement of the shaft through said bearings in the same direction of travel as the platen 12 of the typewriter carriage 11. This shaft 15 supports a roll of typewriter paper divided into sections by lines of perforations 20. The typewriter 10 rests upon the base 16' of the herein described type- Writer attachment to the upper surface of which has been secured a pad 17 of rubber, felt, or the like material to reduce the noise of opera-tion of the said typewriter to a minimum, and at the same time prevent slip- ICC page of the typewriter from the base of the said typewriter attachment. l

The supporting arms 13 of the typewriter attachment are of integral construction, as will be hereinafter referred to, and fastened to the base '16 by two wing-type screws 18, or similar fastening devices in Isuch a manner that the said typewriter attachment is readily detachable and demountable to facilitate transportation.

In addition to the pad 17, the said base 16 is also provided with buttons 19, or feet, of rubber orthe like material which prevent slippage ofthe machine from the surface upon which the typewriter attachment and the typewriter rest. These buttons 19 also vaid in cushioning the vibrations of the machine, reducing the noise of operation of the machine to a minimum.

Carried on the shaft 15 is a roll of paper 20, of any preferred size, that may t into said typewriting machine according to the use to which the same is applied. This roll of paper 20 is rolled, or wound, upon aV cylinder 21': or' the like so that the inner diameter of the cylinder 21 is slightly larger than the diameter of shaft 15,V thereby permitting movement'of the paper roll 20 yabout the Vshaft 15, which rotary movement is restricted'as'hereinafter more fully described.

The arrows shown in Fig. 1, indicate the direction of travel of the paper which is being wound from roll 20 in the normal process of using the typewriting machine and typewriter attachment. paper roll 20 is indicated by the numeral 22.

Referring now particularly to Fig. 2, while the inner cylinder 21 of the paper roll 20 rests loosely upon the shaft 15, the roll of paper 20` is restrained on one side of the Ishaft 15 by frictional contact with a collar 23 and a large washer 24 afxed thereto, which collar 23 is firmly arrested from movement upon said shaft 15 by a set screw 25 in said collar 23. The collar 23, washer 24, and the set screw 25 are removable and detachable from said shaft 15, Upon the opposite side of 'the roll of paper 20, and opposing the translating motion of the roll of paper 20, on the shaft 15, is a spring finger 26 which lightly restrains the roll of paper 20 from uncontrolled unwinding from the shaft 15. This spring finger 26 is held firmly, but detachably, on said shaft 15 by a collar 27 and set screw 28. While shaft 15 is mounted to rotate in its bearings or notches 14, the washer 24 and finger 26 act to secure the roll of paper to said shaft so that the roll of paper will move transversely with the shaft `as the shaft moves over its bearings to compensate for the transverse movements of the typewriterl carriage. The spring finger 26, the collar 27 and the set screw 28 may be removed entirely from the shaft 15, and in a like manner the collar 23, washer 24, and the set screw 25, may also be removed for the purpose of inserting a new roll of paper 20 upon the shaft 15, or for the purpose of removing the inner cylinder 21 from a spent roll of paper 20. As better shown by Fig. 2 of the drawing, the shaft 15 is free to move backwards and forwards in the notched ends 14 of the two supporting arms 13. The shaft 15 is carried in the same direction and with the motion of the platen 12 on the carriage 11 of the typewriter 10.

Continuing the reference to Fig. 2 it may be seen that the supporting arms 13 form an integral construction being of tubular shape, which has been flattened along the mid-portion 29 n such manner that the supporting arms 13 may be readily secured or detached by means of the wing-type screws 13 from the said base 16' of the said typewriter attachment.

Referring particularly to Fig. 3, the roll of paper 20 is wound about the spool or inner cylinder 21 which is supported by the shaft 15. The shaft rests in the notched Patented July 28, 1959" The free end of the upwardly and rearwardly, being fastened to the base'16 by the two Wing-type screws 18.

In Fig. 4 the fragmentary View of a portion 30` of the perforated paper roll 20 is shown. It may be seen that the lineiof perforations 20 extends entirely across the width of the paper 30, and as. the paper 30 is 'un' Wound from the paper roll 20,` by the action of the platen 12, the paper 30 may be separated into sheets of uniform size by tearing along the lines of perforations, or kept in a continuous length as desired by the typis't. The arrow 32 is printed or marked in the lower righthand corner ofeach section of paper 30 that is wound on the paper roll 20, indicating that the typewritten matter of a section of the paper is nearing the end of the 1 section, insuring uniform spaces at the endsof the paper section.

The foregoing detailed description has been given for clearness and understanding only, and no unnecessary limitations would be understood therefrom, but the appended claims should be construed as broadly as permis- 20 4 Y Y! T base, bearings fformed'at the upper ends of said arms, a shaft mounted in said bearings and slidable transversely of said supporting arms, the ends of said shaft extending substantial distances beyond said supporting arms, a paper roll on said shaft adapted to be fed to the platen of the typewriter positioned on said base, and mechanism for removably securing said roll on said shaft.

2. An attachment for use with a typewriter or similar carriage, comprising a base, roll supporting means mounted on said base having bearings, a shaft mounted in the bearings of said supporting means for sliding translatory movement, said shaft adapted to support a roll of paper, and means to restrain the roll of paper against endwise movement on said shaft in normal use of the said typewriter and the typewriter attachment'.

References Cited in the iile of this patent UNITED STATES PATENTS