US1105082A - Rewinding mechanism for type-writing machines. - Google Patents

Description

A. E. KARLBERG & M.'B. SARGENT' RBWINDING MECHANISM FOR TYPE WRITING MACHINES.

APPLICATION FILED APR. 7, 1914.

IN VEN T 0R5 E. w

4 Attorney Patented July 28, 1914.

WITNESSES 5 w UNITED srnrr ns PATENT OFFICE.

ARVID EMANUEL KARLBERG AND MARSHALL BIDWELL SARGENT, 0F OWENSBORO, KENTUCKY, ASSIGNOBS TO THE STENOTYPE COMPANY, OF INDIANAPOLIS,

INDIANA.

Specification of Letters Patent.

Patented July 28, 1914.

Application filed April 7, 1914. Serial No. "830,317..

chincs,-the obj cet of the invention being to provide simple and eflicient mechanism which will be operable from the paper feed mechanism of a machine of the class employed for -stenographic typewriting, to accurately reel the paper strip step-by-stcp after it leaves the writing mechanism, and to so construct such rewindin g means that it may be readily and quickly manipulated manually in such manner as to permit ready retrograde rotation of the rewinding' reel when the operator desires to inspect the writing on the reeled paper strip.

Vith this object in view, the invention consists in certain novel features of construction and combinations of partsas hereinafter set forth and pointed out in the claims.

In the accompanying drawings, Figure 1 is a sectional view (partly in elevation) showing the application of our improvements; Fig. 2 is a plan view partly in section; Fig. 3 is a detail view illustrating positions which the parts may assume under different conditions, and F 4 is an enlarged sectional view illustrating the ratchet devices.

.1 represents the frame of the machine, wherein is mminted suitable printing means embodying a platen 2 and type bars 3 .-the latter being operable by suitably arranged key levers 1. A universal bar 5, operated by the keylevers, is connected. by an arm 6 and pitman 7 with paper feeding mechanism 8.

A paper strip 9 passes from a supply roll ll'and after passing, in front of the platen ahd over guiding devices 12, passes through the paper feed mechanism 8 and it will then IGELIWflIdlYfIOIIl said frame 1, said arms being provided at their rear ends with sleeves 1617 respectively. A spindle 18 is revolubly mounted in the sleeve 16 and to one end of this spindle, a disk 19 is secured by means of a screw 20, the other end of said spindle being provided with a thumb piece 21. The spindle 18 is also longitudinally movable and is normally pressed in one direction by means of a spring 22 inclosed within the sleeve 16.

A spindle 23 is mounted in the sleeve 17 of arm 14: and provided at one end with a thumb piece 24. Adisk 25 is secured to the inner end of the spindle 23 by means of a screw 26, and near the head of thisscrew, the disk 25 is provided with a pin 27. A removable hub or core piece 28 is disposed between the disks and is made hollow or with socketed ends to receive the headsofthe screws 20 and 26 and is also notohed as at. 29 to receive the pin 27 on disk 25, so as to trally to the outerface of the reel disk '25,

and adjacent to this ratchet wheel, a disk 31 mounted loosely on the spindle 23 and provided with a peripheral flange 32 inclosing the ratchet wheel but spaced radially therefrom. A gravity pawl 33 is pivot-ally attached to the inner face of the disk 31 and its tooth is maintained by gravity, in engagement with the toothed periphery of the ratchet wheel when the parts are disposed in their normal positions, as shown in full lines in Fig. When the disk 31 is turned over, as indicated in dotted lines in Fig. 3, the pawl will drop by gravity from engagement with the ratchet wheel and rest on a pad 33 secured to the flange 32 of the disk 31. When the ratchet devices are thus disposed, the rewinding reel may be turned backwardly to permit the free unwinding of the paper when the operator desires to inspect portions of the writing on the paper.

The disk 31 of the ratchet devices is provided with an arm 34 which may be secured to the disk by means of a plate 35 from which said arm projects and which is secured in any suitable manner to the disk 31. A pitman 36 connects the arm 3& with the paper 'feed mechanism 8, so thatthe movements of the latter will be transmitted to the ratchet devices for operating the rewinding reel. The pitman 36 comprises two ratchet devices connected with said reel and comprising a ratchetwheel and a pawl nor- .mally Testing by gravity over and engaging said. ratchet Wheel, an abutment for said, pawl when the same is disposed under and out of engagement with the ratchet wheeland a pitman comprising jointed sections, connecting said ratchet devices with a movable Ipart of the typewriting mechanism.

2. The combination with typewriting mechanism and arewinding' reel, of a ratchet wheel secured to the rewinding reel, a loosely mounted part, a gravity pawl carried by said loosely mounted part and nor;

-typewriting mechanism.

3. Rewinding mechanism for typewriting 1 ing witnesses.

is disposed under and out of engagement with the ratchet-wheel, a pitman comprising ointed sections connecting said loosely mounted part with a movable part of the machines, comprising a rewinding reel, a

mounting therefor, a ratchet wheel secured to the reel, a part loosely mounted with respect to the reel, a gravity pawl carried by the loosely mounted part and normally disposed over and engaging the ratchet wheel, an abutment for the pawl when it drops by gravity from the ratchet wheel, and an operating pitman connected with said loosely mounted part,

4. Rewinding mechanism for typewriting machines, comprising a reel, a mounting therefrom, a ratchet wheel secured to the reel, a loosely mounted disk having a flange inclosing the ratchet wheel, a gravity, pawl carried by said disk and adapted to normally project over the ratchet wheel and engage the same, the flange of said disk constituting an abutment for the free end of the pawl when the disk is turned to dispose said pawl under and -out of engagement with the ratchet wheel, an arm projecting from said disk, and an operating pitman connected with said arm.

i In testimony whereof, we have signed this specification in the presence of two subscril ARVID EMANUEL KARLBERG. MARSHALL BIDWELL SARGENT. Witnesses:

EDW; GROEZANGER, CHAS. Gr. NALLE.

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