US957798A - Copy-holder. - Google Patents

Description

B. F. PEETZ.

. COPY HOLDER.

APPLIOATION mum DEG. s, 1908.

WITNESSES INVENTOI? ATTOR/I/E V8 BENJAMIN rnnrz, "or mono, cannon.

COPY-HOLDER.

I; p e im n t on ofLettersPatent. PatentedMay 10, 1910,

Application filed December 3, i905. serial in. 465,780.

To all wlwm it may concern: I Be it known that I, BENJAMIN F. Pnn'rz,

a citizen of the United States, and a resident of Moro, in the county of Sherman and State of Uregon, have made certain new and useful Improvements in Copy-Holders, of

which the followin is a specification.

My invention re ates to cop holder attachments for typewriters an consists in the constructions, combinations and arrangeme'nts of parts hereinafter described and claimed. 1

The main object of my invention is to provide a copy holder which will bring the llnes of thecopy into view in front of the operator consecutively as the-platen is rotated for line spacing. I

A further object of my invention is to provide means for operating the copy holder so that it will fwd the copy faster or slower and in such a manner as to be entirely in deendent of the rotation of the platen.

y invention is illustrated in the accompanying drawing,'in which- Flgure 1 is a front view showing one embodiment of my invention, and Fig. 2 is. an end View showing the means by which the co y holder roller is operated.

In Fig. 1 A is thecarriage frame of a typewriter such as theUnderwood, Smith or Remington. B is the platen which is mounted u on a shaft 1 and is arranged/for movement y means of the thumb wheel 2. Secured to the carriage A is an upright frame consisting of the side pieces 3 and 3, provided with inwardly turned flanges at their lower ends 4 and 41 connected with the upright members 3 and 3 by means of the braces 8, 8. A cross piece 5 which is referably a flat strip connects the memhers 3, 3, and braces 7, 7 serve to strengthen the same and to prevent side movement. The frame thus described is' secured to the carriage by means of the screws 10 and 10 shield 16 is also mounted upon the shaft and is provided with the adjusting handle 19 for shifting the shield relatively to the pawl 17.

The shield may be adjusted in one of three positions. In its first position the end of the pawl 17 lides overonly a short portion of the shield before engaging the teeth of the ratchet 15, when the spacing lever 18 is manipulated. As soon as the pawl engages a tooth on the wheel 15 the platen is turned, in this instance a distance equal to the space between three lines. In the sec ond adjustment of the shield 16 the latter prevents the pawl from engaging the teeth of the ratchet wheel as soon as it otherwise would, and in the second position the platen is moved a distance corresponding to two lines. Thethird adjustment similarly gives a movement of the platen of only one line.

Referring now to Fig. 2 it will be seen that one leg of the upright 3 is provided with a lug 20 to which is pivoted a bell crank lever 21. The lower end of the latter is arranged to be engaged by the inner end of the line-spacing lever 18, so that when the pawl 17 is moved the lever 21 is alsomoved inwardly. On the other arm of the lever 21 is pivotally attached. a pawl 22, which is adapted to engage the teeth of the ratchet 23 located upon the shaft 13. The ratchet 23 is provided with a shield 24 a ainst which the pawl 22 is normally held y means of the spring 22. The shield 24 is similar to the shield 16 on the ratchet 15, which serves the same purpose of varying the throw of the pawl 22, thereby turning the copy holder roller difierent distances. The shield 24; is provided with an adjusting handle 25 similar to the handle 19 of the shield 16.

In order to provide frictional resistance to the positive movement of the copy holder roller 12 I have arranged the spring member 26, which is pivoted at 27 upon the upright 3 and bears at its end a head 28 of semicylindrical shape and of such a size that it will enter the outer openings between the teeth far enough to form an opposing element to the motion of the wheel when slight power is applied, but may be pushed out of the way by the teeth when enough power is applied to the wheel in either direction. In order to give sufficient tension to the spring 26 I provide a cam member 29 which may be turned to bear against the spring at different points on the cam surface, thereby providing a means for adjusting the pressure of the head 28 against the teeth of the ratchet. The arrangement thus described provides means for permitting the movement of the copy holder roller in response to the positive action of the pawl 22, while preventing any extra movement of the roller or the accidental rotation thereof. At the same time, owing to the cam shape of the head 28, the roller may be turned in either direction so that the paper may be quickly pulled out either from one side or the other. especially to call attention to the fact that if an ordinary spring-locking dog were to.

be used, the paper could not be pulled out from the opposite direction in which the roller can be turned without releasing the dog, and I consider this a decided advantage in my holder.

From the foregoing description of the various parts of the device the operation thereof may be readily understood.

As has been already explained, the invention constitutes an attachment which may be applied to any standard typewriter, but as illustrated, is applied to the Underwood. In this machine the line-spacing is accomplished by moving the lever 18 to the right or to the left. This actuates the pawl 17 in the manner already described and at the same time moves the lever 21. It will be observed that the throw of this lever 21 is the same at every movement of the lever 18,

I desire although caused by a movement of the same lever.

I claim 1. In a copyholder attachment for typewriter machlnes, the combination with the line-spacing lever, of a frame, a roller journaled in said frame, a ratchet wheel attached to the shaft of said roller, a bell-crank lever pivoted on said frame, a sprin -pressed pawl carried by said bell-crank ever and arranged to en age the teeth of said ratchet wheel, one en of said bell-crank lever being adapted to be engaged by said line-spacing lever, a friction member normally in engagement with the teeth of said ratchet wheel, and means for varying the pressure of said friction member.

2. In a copy holder, attachment for typewriter machines, the combination with a linespacing lever, of a frame, a shaft journaled in said frame, a roller on said shaft, a ratchet wheel attached to one end of the shaft of said roller, a bell-crank lever pivoted on said frame, a spring-pressed pawl pivotally mounted on one end of said bellorank lever, and arranged to engage the teeth of said ratchet wheel, the other end of said bell crank lever being out of normal engagement with, but adapted to be engaged by the line-spacing lever, a spring friction member, normally in engagement with the teeth of said ratchetwheel, and a cam secured to said frame, and arranged to engage said sprin friction member for varying the pressure 0% the latter, upon the ratchet wheel.

BENJAMIN F. PEETZ.

Witnesses:

H. S. MCDANEL, J. C. MCKEAN.

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