US1108926A - Type-writing machine. - Google Patents

Description

L. G. MYERS.

TYPE WRITING MACHINE.

APPLICATION FILED MAR. 31, 1911 zm gm 82%,

2 SHEETS-SHEET l.

Patented Sept. 1, 1914.

WITNESSES 5. #4 11 ATTORNEY L. G. MYERS.

TYPE WRITING MACHINE.

APPLICATION FILED MAR. 31, 1:111.

Patented Sept. 1, 1914.

2 SHEETS SHEET 2.

INVENTOR WITNESSES ,2 -4 12 ATTORNEY shoulder ("3. the face of which may be radial.

pisrrs s'rarss rA'rsN'r OFFICE.

LEWIS Cr MYERS, 0F BROQKLYN, NEW YORK, AS SIGNOR, BY MESNE ASSIGNMENTS, TO RGYAL TYPEVTRITER CUMI-A'NY, INCL, OF NEW YORK, N. Y., A CORPORATION OF Ira-w YonK.

I Specification of Letters Patent.

TYPE WITING MACHINE.

Patented. $61751, T911.

Application filed March 31, 1911. Serial No. 618,122.

om mar concern Be it lmown that I, Lnwrs O. MYERS, a

citizen of the United State of America, re-

i he borough of Brooklyn, county or" and. State of New York, have in- :ertain new and usetul Improve- :;'{H3-.lVIlting hiiacliines, of which swing is a specification. I w ..ntion relates tr -t amp mounted umt'erential ace of the platen, for holding rds or stiff sheets.

The details of construction and the ap pliance c mprised Within the invention are hereinafter set forth in detail.

in the accompanying drawings: Figure 1 is per oectivc view, partly broken away, of n, cy-limrical typewriter platen showing a cardclamp set in the circumferential surface thereof. Figs. 2, 3 and 4 are detail diagrammatic views showing different positions of the clasp with reference to the printing point-on the platen. Fig. 5 is a front elevation of the platen and some associated parts; T 6, an clevat'ii'm of the right hand end i n l ofthe platen and associated parts with the plate of the platen carria-ige broken av: Fin. T, a detail view showing the end of the piston and some associated parts in Y a ditl'erent prsition from that shown in Fig. 6; 8, a similar view showing the parts in still another position. Fig. 9, a similar View showing a modification; Fig. 10, a like view showing a further modification; and 5.1. is a like view showing the card clamping devices reversed relatively to the platen.

Ina longitudinal openingtFig. 1) in the peripheral face of the platen 1 is set a, card clamp 2 of appropriate length longitudinally of the platen. It is carried by a rock shaft.

3 having at the left hand end of the cylinder a collar 4 and at theright hand end there is i applied to it an arm 5', curved to conform generally to the circumference of the platen and which at its rear or free end has a 'or substantially so, to the platen. To the end of the cam arm below the shoulder is applied a coiled spring 7 attached at 8 to a pin in the end of the platen. The reaction of this spring is such as to normally close the card clamp 2 against the surface of the platen. The card clamp is shaped to conform to the circumference of the platen and is let into it in such a way as to destroy as little as possible its circumferential contour; and it is so associated with the platen that, when the latter is turned toward-the front (in a front strike machine) the clamping edge will be uppermost and rearmost. The clamp is composed generally of a plate curved to conform to the-circumference of the cylinder and having at its ends arms that extend within the .laten and are connected to the rock 'sha t- 3 which turns in hearings in the platen. On the inner face of the clamp, just within 'or beyond-its outer lip or edge 2* are stops 2 that act as a gage for the inserted edge of a card. To gage cards laterally the end piece 2 of the card clamp may be utilized. A card, such as 9, may be inserted above the platen into the grip of the clamp Fig. 2. There is,-Fig. 6, on the right hand. end plate of the carriage a fixed stop 10. When the platen by means of its usual knob or twirling handle 1 is rotated so that its upper surface turns rearwardly, shoulder (3 of the cam arm of rock shaft 3 comes against fixed shoulder 10, (Fig. 7) which cams arm 5 outwardly, against tension of spring 7, into the position shown in Fig. 6 and the rock shaft?) is turned to open the card clamp 2. If, now, a card be inserted. as in Fig. 2, and the platen is given a slight forward motion, the reaction of spring 7 promptly closes the clamp on the card, gripping its leading or inserted edge against the contiguous face of the platen. As may be seen from Figs. 6 and 7, the shoulder 6 and stop 10 are so shaped. arranged and related that a very small turning movement of the platen is required to open the normally closed clamp after the parts 6 and 10 come into contact. There is, of course, less movement required to permit the clamp to grasp a card because the card has been inserted and the clamp cannot make a complete closing movement. The platen may now'be rotated to carry its upper surface forward as indicated in. Figs. 3 and 4 until it has reached the position, shown in either of these figures when further rotation will be arrested by a. stop hereinafter described. In Figs. 2, 3 and 4, the dotted line indicates the printing line.

Cotiperating with the laten is a card guide and holder'comprising upright arms carrying guiding and holding rollers 11, and a platen scale 12. These guiding and holding devices may of course vary generally and in detail. Those here illustrated are disclosed in Letters Patent No. 950,326 granted to Edward B. Hess February 22, 1910.

The combined guide, holder and scale is shown mounted upon the shift rail 13 of the carriage of a visible or front strike writing machine such as the Royal Standard. 14 indicates the usual type. bar guide also mounted upon the shift rail and 15 is the usualribbon vibrator through which traverses a ribbon 16.

Fig. 6 shows ordinary rear and front feed rolls 17, 18, paper table 19 and pan 20. 21 is a common form of spring controlled detent roller acting upon the platen ratchet wheel 22 and cooperating with it at proper times to hold the platen stationary.

Stop means are provided to arrest rotation of the platen with the free end of the card in desired position to receive printing. For instance, when the platen has been moved to th position shown in Fig. 4,'it may be arrested by a fixed stop 23, Fig. 8-, against which the rock shaft end of cam arm 5 abuts. To arrest the platen in another position such, for instance as shown in Fig. 3, an additional adjustable stop may be provided, such as the stop 25 (Fig. 9)

pivoted on the fi'xed bracket or part 24 that carries stop 23. The latch stop 25 has a finger piece 26 and its end 27 may be set to intercept the end of arm 5. Its pivot screw may frictionally hold it in either of its positions. A universal stop device may be employed and it may be such, for instance, as

shown in Fig. 10 in which 28 is a toothed wheel turning on a fixed bearing onthe right hand end plate of the ca riage in suitable relation to the end of the platen. This wheel has a spring pressedlocking latch 29 by which itv may be fixed in any desired position and carries a stop 30 cooperating with the rock shaft end of the cam arm 5 to arrest the retrograde movement of the platen at any desired point.

Fig. 11 indicates a construction in which the platen card clamp is reversed,that is to say,'its open or clamping edge is directed when open toward the front of the machine. In this view 31 is the stop corresponding with the fixed stop'10 (Fig. 6)

and which, when the cam arm 5'is pressed against it by forward rotation of the platen,

operates the rock shaft 3 to cause the clamps 2 to open, as indicated in Fig. 11.

The construction described is particularly applicable for the handling of cards of considerable thickness and size and the coopcrating guides 11, 12 at the front of the machine serve to effectively hold such cards closely against the platen and, not only prevent their interfering with the ribbon vibrator, but also from contacting with the ribbon and becoming soiled.

I claim:

1. Card feeding devices for a typewriting machine comprising a platen having a longitudinal recess in its face, a clamp hinged and supported within said recess, means located at'the end of the platenand extending longitudinally within the platen for automatically opening the clamp when vtheplaten is turned to card receiving position and adjustable means on the frame of the platen for automatically arresting the cylinder at a determined point when the cylinder is rotated from card receiving position whereby .provision is made in the same machine for cards of diiferent length.

2. Card feeding devices for a typewriting machine, comprising a platen frame, a revoluble platen thereon having a longitudinal recess in its face, a rock shaft turning therein, a clamp mounted on the rock shaft, an arm on one end of the rock shaft at the end of the platen having a surface substantially radial to the platen, a spring tending normally to close the clamp and a stop on the frame having a surface cooperating with the radial surface of the arm for the purpose set forth.

3. Card feeding devices for a typewriting machine comprising a rocking arm carried by the platen and having a stop surface substantially radial to the platen, a spring ap plied to the arm and tending to depress it and a stop on the frame having a surface cooperating with the surface on the rocking arm to raise the arm against the tension of the spring when by rotation of the platen the two surfaces are brought into contact, rock shaft within the platen controlled by the rocking arm and a paper clamp controlled by the rock shaft.

4. Card feeding devices for a typewritin machine comprising a rocking arm carrie by the platen and having a stop surface, a spring tending to depress the arm and a stop on the frame cooperating with the stop surface of the arm and an adjustable wheel on which a stop is mounted whereby an adjustment for cards of varying length is provided, a rock shaft within the. platen controlled by the rocking arm and a paper clamp controlled by the rock shaft.

5. Card feeding devices for a typewriting machine comprising a rocking arm carried (,J the platen and having a stop surface, a platen controlledby the rocking arm and a apring tending to depress the arm and a stop paper clamp controlled by the rock shaft. 10

on the frame cooperating with the stop sur- In testimony whereof, I have hereunto face of the arm, a stop adapted to act on the subscribed my name.

end of the arm and adjustable in a circular LEWIS C. MYERS. path concentric to the axis of the platen Witnesses:

whereby an adjustment for cards of varying E. B. Hess,

length is provided, a rock shaft within the FRED J. PRovo.

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