US2036580A - Copyholder for typewriters and bookholders - Google Patents

Description

April 7, 1936.

P. KOBLER 2,03,580 YPEWRITERS AND BOOKHOLDERS Filed March 8. 1954 COPYHOLDER FOR T Patented Apr. 7, 1936 UNITED STATES COPYHOLDER FOR TYPEWRITERS AND BOOKHOLDERS Paul Kobler, Lynbrook, N. Y.

Application March 8, 1934, Serial No. 714,666

1 Claim.

My invention relates to improvements in copyholders, particularly line indicators and has for its object to provide means for holding a sheet or-nuinber of sheets of manuscript or other writing, or books while being copied from by a typewriter operator, whereby time and labor are 'savedand mistakes avoided.

My invention will be understood by reference to the accompanying drawing, where the same parts are indicated by the same numerals throughout the several views.

' Figure 1 is a perspective view of my improved copyholder. Y V

Fig. 2 represents the upper part' of the copyplate in aplan'view.

The; copyholder is in form of a bridge placed over the opening of a drop 'down typewriter desk and being sufiiciently elevated to slide over the elevated part of the desk, when such a' desk is open. "The bridge of the copyholder'is shown in the drawing by numerals I, 2 and 3 carrying an inclined copyrest 4.

The bridge is constructed preferably with a plate or some other means so as to hold the copyholder in such a distance over the elevated part of the drop down desk, that the copyholder may easily slide over this elevated part.

Standards 2 hold the bridge I on each end and are fastened on bars 3. These standards are fastened about in the middle of bars 3, which prevents the copyholder from falling forward or backwards without needing any additional support.

The bridge I carries two eyelets or any other convenient means for guiding the cord l9, as herein after more fully described. The upper end of the copyrest 4 as shown in Fig. 1 has a cord regulating device.

In the center and rear of the copyrest 4 on its top are movably held by tension screw 1 I] on rivets 8 and 9 the levers 6 and 1. They are held at the desired adjustment by means of the tension screw 10.

By means of these extensible levers 6 and I the line marker can be lifted or lowered on each end as will be obvious.

A tray or foot piece I is attached in holes I I, I2 or l3 of the bridge or copyrest respectively, for the lower edges of the sheets to rest upon, and is preferably provided with an opening 15, through which a separate cord with a weight under the foot piece is running, thus preventing the displacement of sheets and assisting in holding the copy securely.

A separate piece 26 holding a shaft is attached with screws to the typewriter desk, near the keys of the typewriter. On this shaft is pushed a handwheel 21. A spring 28 inside the handwheel bears upon the shaft 26 and serves as a brake to retard the rotation of said reel.

'Two flexible cords l9 are secured at one end to the handwheel 21. The handwheel has holes on each side of the groove through which the flexible cords are secured by a simple knot.

' The flexible cords are then passed beneath a Q hook 25. This hook is also attached to the typewriter desk and is connected in no rigid way to the copyholder, but its position is very important, being somewhere between the platen of the typewriter and the backwall of the drop down desk, as shown in the drawing. The flexible cords are passed beneath and around the hook 25 and thence upward through guides 26 upon the back of bridge I. Each cord passes through a separateguide 24 and 24A. These separate guides 1 prevent the cords from being twisted together. From guides 24 one cord passes diagonally along the back of the copyrest to guidehole 22 in lever I, mounted on top of the copyrest and thence downward to one end of the line marker. From 25 guide 24A the other cord passes almost straight up to the guidehole 23 in lever '5 and thence downward to the other end of the line marker.

These guide hole levers 6 and l have a vast movable range. The fact that the guide holes are 30 further out on both sides than the side line of the copyrest means that these levers can be moved far over and under the top line of the copyrest.

These guide hole levers serve also another purpose. If any obstacle is in the way of the line marker, they move before too much strain is put on the cord, thus preventing the cord from tearing easily. This is especially the case when the handwheel is taken away from its support 26, so that the desk can be closed. 40

The guide hole levers B and l are mounted on top of the copyrest in such a way that between the bar to which they are attached and the copyrest there is an open space left, as shown in Fig. 2.

This open space is very convenient for holding any kind of cardboards or other means to make the copyrest higher. This is desirable when the copyholder is placed against a window and the higher copyrest does not interfere with the copyholder proper and stops the glare.

Screws 3% on top and on each side of the copyrest hold the bar to which the levers 6 and I are secured as already described. These screws 30 may also be used to secure additional attachments to the copyrest, if cord I6 with weight I! 55 should be replaced by some other leaf or sheet holding device.

The operation of my device is as follows:

The bridge placed over the opening of the drop down typewriter desk shown in drawing by numerals l, 2, 3, is pushed forward to the proper distance from the eyes.

The handwheel 27 which had been taken away from support 26 over night, before closing the drop down desk, is pushed back again on the axle of support 26 and the silk cords l9 are laid. under hook 25. The tray M with the opening l5-is adjusted by means of the clamping screws to suit the length of the sheets or sheet to be copiedfrom.

and to have bunches of cards or similar sizes of sheets to be copied from at the same level with the eyes of the operator. Cord lfi withweight [1, which is under the tray of the copyholder is then laid over the sheets to be copied from. This cord lli with weight I! holds all sheets in position on the tray and has the additional advantage that the first sheet can be easily pulled away from the bunch of papers without disturbing the position of the other sheets and without any further adjustments or movements of the hands of the operator. This is possible through opening [5 in tray 14 which opening permits that the cord will always touch the sheets, from a whole'bunch of sheets down to a single sheet.

The sheet or sheets are laid upon the oopyrest l4 in the usual manner the line marker 20-2l resting upon the face of the upper sheet, the cord IS with weight I! resting on the same upper sheet under the line indicator or marker.

Line marker 20, 2| is then Wound up to the top of the sheet by means of the handwheel 2! and cords l9 and said line marker adjusted with levers 6 and 1 so as to mark the first line accurately.

These levers 6 and I are standing out on each side of the oopyrest so that they can be easily moved by hand and at the same time'giving the possibility to move them as much up or down as possible. As the copying progresses the handwheel 21 is turned to mark each' successive line to the bottom of the page, when handwheel and line indicator are again wound up to the top of the sheet. The weight of the line indicator is contrary to other inventions almost nothing, but just enough for a downward movement, so that the very small spring 28 inside the handwheel 21 pressing on the axle of support. will stop the iine indicator at any position. The very light 10 weight of the line indicator has further the advantage that there is hardly any friction or Wear on the cords l9.

, Hook 25 which is attached in a straight line in back of the handwheel 21 holds the cords l9 away 15 from the moving carriage of the typewriter.

To close the drop down desk again, in the evening, the handwheel 21'is pulled away from support 26, the spring pressing on the axle of support 26 being attached inside to the handwheel, 20 is slid out together with the handwheel; The cord is taken awayfrom under hook 25 and the handwheel is placed on part 3 ofthe copyholder where another support 26 may be attached, or just on the desk near the copyholder. V 25 Then the bridge I, 2, 3'with the attached copyrest is pushed slightly backwards and the drop down typewriter desk may be closed for the night.

Having thus described my'invention, what I claim and desire to secure by Letters Patent of 0 the United States is:

A line indicator for a copyholder-including a supporting stand, comprising a bar to lie transversely the copy, two levers pivoted at the rear and top of the stand, means for adjustably holding the 5 levers, said levers having holes at'their outer ends, an operating handwheel mounted adjacent the stand carrying two cords, each passing through a hole at the end of each lever and attached to the ends of the line indicator bar.

V p 10 PAUL KOBLER.

Images