US2317821A

US2317821A - Copyholder

Info

Publication number: US2317821A
Application number: US296689A
Authority: US
Inventors: Stein Hermann
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-12-27
Filing date: 1939-09-26
Publication date: 1943-04-27
Anticipated expiration: 1960-04-27
Also published as: CH226472A; BE446256A; CH237794A; CH227437A; CH227374A; CH230273A; CH225647A; FR877689A

Description

H. STEIN April 27, 1943.

coPY HQLDER l l Filed sept. 26, 1959 sheets-sheet 1 /nvento/n Her ma 7m' Stem 5y April 27, 1943. H. STEIN y 2,317,821y

' COPY HOLDER Filed Sept. 26, 1939 2 Sheets-Sheet 2 Patented Apr. 27, 1943 UNlTED STATES r OFFICE.

CPYHOLD'ER.

Hermann Stein, Magdeburg; Germany vested in the Alien Property Custodian 14 Claims.

The invention relates to improvements in connection with typewriters, its object being to provide a copy holder situated above` the machine in front of the typists eyes` and its distance from the typist being' adjustable.

Another object of the invention is to provide means preventing the vibrations of the machine from being transmitted to the adjacent parts, in particular to the copy holder.

To attain this aim, an object of the invention is a holder which keeps. the copy holder above the typewriter and is so xed to the bottom plate of the machine and soshaped as not to interfere with the movements of theV carriage of the typewriter.

Another object of the inventionis. the support of the holder on an axle substantially below its center of gravity, said axle being at right angles to the direction of movement of the carriage of the typewriter.

Another object of the invention is a flexible support ofthe machine on a base plate in order to keep off the vibrations of the machine from the adjacent parts, in particular from the copy holder.

Further objects of' the invention will become obvious from the claims and description referring to the annexed drawings in which Figure 1 is a frontview of the device embodying the invention,

Figure 2 is a side view of the device embodying the invention,

Figure 3 is a side view of, a modified form of the invention.

Figure 4 a detail in accordance withV the invention.

In Figures l, 2 and 3 the typewriter is. indicated in dash-and-dot lines. The typewriter is in the conventional manner fitted with a carriage carrying a roller 2. As shown in Figures 1 and 2, the copy holder 3 is secured to a holder 4 pivoted on journals 5. These journals are supported in such a manner that their movements can be adjusted by means. of the wing nuts E, this being preferably obtained in a manner as to permit the holder 4 to be swiveled by hand, but to remain in the. adjusted position without changing the latter. By swiveling the holder 4, the copy holder is permitted to be swung forward down to the keyboard of the machine, should any alterations or additionsbe required in the copy. *Ifv the paper to be written on shall be inserted' in, or removed from, the typewriter, the holder 4 is swung upwardly. Figure 2 shows the approximate position of the holder when the typewriter is in use.A It Wlll be seen that the holder is' about at eye levelv of the typist.

To prevent the lateral movements of the carriage of the typewriter from being hindered by the holder 4 what` would be the case in thev positionV shown in Figure 2, the holder is curved, as shown, in Figure l, so that the lateral, bows of the holder extend beyond the movement'of the carriage.

With the type shownA in Figure 3, the holder 4 and its journals* 5 are carried more highly than shown in Figures 1 and 2, namely about level with' the carriageof the typewriter or higher. In this case the holder is carried by a stand 1. With this type the, holder 4 need not be curved. as shown in Figure l, but may be of any desired shape, e. g., a simple rod, since it is at all times above the carriage of the typewriter and thus"A does not interfere with the movements of the carriage.

In order to protect the copy holder from .the vibrations caused byy typewriting-that is` to say not only the vibrations produced by the keyboard, but in particular those due to the. movement of the carriage-the copy holder is fastened either directly", as'shown in Figures 1 and 2, or indirectly by means of stand l,v as. shown in Figure 3, to a balance beam 8. This scale beam 8 is pivoted on an axle 9 which, is situated sub.- stantially transversely to the movement of the carriage. This axle 9 is approximately Vbelow the center of gravity of the swiveling members. By this arrangement the following isv obtained: due to the movement of' the carriage to the left while writing, the machine is imparted at each step a thrust to the left which is also transmitted to the base. Consequently theV copy holder would join this movement so that the copy would hardly be legible. The support of the copyholder on the axle 9 by means of the balance beam 8, however, enables the copy holder due to its inertia to stand still in the space when the typewriter with its base moves to the left due to the thrust, of the carriage. Since these movements are comparatively small, the swiveling capacity of the-balance beam 'isI closelyrestricted by the. stops lil. Thesestopsl are preferably elastic and 'may' consist, e. g., of rubber.

To fasten the copy' book 34'` to. the copy holder, the latteris, according to the invention, providedl with one or severalr-preferably two-studs Il,A while the copy book has corresponding holes. The holes and studs are situated at the top; edge of. the copy holder and copy book respectively. Thereby it. is, possible to easily turnover-the pages already copied of the book so as to fall behind the copy holder, permitting the next page of the 4 make the front section I4 of the bearing 'ledgel hinged by providing hinges I5 in order to prevent the bottom edge of the papers to be written on from sliding down. The copy holder 3 can be fixed to the holder 4 in an adjustable manner,

for instance, by means of a screw I6 (Figure 4) As shown in Figure 1, a lamp I 'I may be fastened, e. g., to the holder 4 so as to be adjusted in a suitable manner. This lamp lights both the copy and the keyboard of the machine and may be so adjusted as not to dazzle the typist. Being secured to holder 4, the lamp just as the copy holder 3 is held free from vibrations and will not be affected by the jerks oftthe machine.

As also shown in Figure 4, the copy holder 3 is provided with a line indicator I8 which may be moved up and down along a bar I9 to indicate the lines to be copied of the copy. t

If copies are to be made not from a copy book, but from loose leaves, it will be suitable--especially if such leaves are very broad-to use the device shown in Figures 1 and 3. This device consists .of a feed roller 20 secured to the copy holder. .For this purpose it is advisable to use an ordinary .typewriter roller which has been removed from a typewriter together with the slide rail used for movingthe carriage sideways or has been procured separately as a spare part. To this end it will do to provide a threaded hole in the slide rail 2| and a hole in the bearing ledge I3 at the copy holder 3. Then a screw 22 is passed through the hole in the bearing ledge and screwed into the slide rail in the .aforementioned hole, so that the feed roller is secured to the'copy holder. The conventional line controlling device attached to the roller is then connected to a key 24 by means of a Bowden wire; the operation of this key causes the roller to be shifted by one or several lines. This key 24 is preferably fastened to a box 25 which can be opened and is adapted to accommodate the feed roller when not in use. In this manner the key 24 is housed ina simple way without the necessity of fastening it separately to the machine or the table or the like, and at the same time there is taken care that the feed roller is safely kept when not in use. As particular advantage ofthis arrangement can be considered the fact that the feed roller 20 together with the vsheet to be copied is situated almost direct over the fair copy. j

`In order to still more' absorb the vibrations originating fromY the typewriter when writing and particularly to take care of the typists fingers, elastic means preferably consisting of rubber are provided between the base -26 and a bottom plate 21 to permit in particular of an upward and lateral movement of the base 26 and thusof'thetype- Writer corresponding to the movements 'of the carriage. The softer `touch preserves also-the machine. These elastic means may, e?. g., consist of rubber balls 28 embedded in rounded depressions 29 provided inthe opposite sides of the base and the bottomplat'e. v The radii of the l y.. r

rounded depressions may be greater than those of the balls, so that the balls are able to roll to a certain extent when the plates are displaced towards each other, while at the same time the distance of their rolling surfaces decreases in accordance with the curvature of the rounded depressions, so that the lateral movement is damped. Since especially a transmission of the movement of the carriage to the left shall be prevented, the elasticity of the flexible means between the two plates is preferably smaller on that side towards which the carriage is moving. Further the elasticity of the flexible means can 'be smaller under the keyboard of the machine than at the back in order to intercept the shocks originating from the pressure exerted on the keys. The two

plates

26 and 21 are preferably held together at the edges by bolts 30 by means of which the tension of the elastic means may be controlled.

The lateral movement of the base 26 and the bottom plate 21 is preferablylimited by stops 3l which preferably consist of inert material, especially felt. To controlv the lateral movements, the stops 3| are made adjustable and, for instance, fastened to strips 32 which are secured by nuts 33 to the bottom plate 21 so as to be adjusted to a certain extent in relation to the base 26 after loosening the screws.

I claim: 1. A device for use with a typewriter comprising a copy holder adapted to swing in a plane parallel to the direction of the movement of the carriage of the typewriter. l

. having its axis substantially below. the. centre of gravity of said beam and holders, jand so directed that said beam can swing in a plane parallel to the directionA of the movement of the carriage of the typewriter.

3. A device for use with a typewriter having a carriage, comprising a base plate, a` shiftable holder, a stand, and a balance beam, said shiftable holder being pivoted on said stand approximately at the levelof said carriage, said. stand being supported by said balance beam, and said beam being swingable about an axis in said base plate.

4. A device for use with a typewriter with a carriage and mounted on a base plate, comprising a copy holder connected on the plate to swing in a plane parallel to the direction of movement of the carriage and a stop adapted to limit the movements of said holder.

5. A device according to claim 4, in which the stops are elastic.

6. For use with a typewriter having a carriage, a base plate, a bottom plate substantially parallel thereto, rounded depressionsbeing formed in two adjacent sides of said plates, and elastic means between said plates, said means engaging said depressions with provision for a substantially horizontal movement of said base plate in the direction of the movement of the carriage,

7. A base plate anda bottom plate according to claim 6, in which said elastic means have lesser elasticity on the side towardswhichY the carriage moves than on the other side.

8. A- base plate vand, a bottom plate according to claim 6, in which the elastic means has lesser elasticity below the, keyboard of .the typewriter than at the back.

9. A base plate and a bottom plate according to claim 6, in which a terminal stop is provided limiting the horizontal movement of the base plate.

10. A base plate and a bottom plate according to claim 6, in which an elastic terminal stop is provided limiting the horizontal movement of the base plate.

l1. A base plate and a bottom plate according to claim 6, in which an adjustable terminal stop is provided limiting the horizontal movement of the base plate.

12. A device according to claim 2, in which a base plate is provided to carry the beam.

13. A copy holder for a typewriter having a carriage comprising a balance beam capable of swivelling about a substantially horizontal axis situated transversely to the movement of the carriage and substantially below the center of gravity of the holder.

14. For use with a typewriter having a carriage, a base plate and a bottom plate, said plates having rounded depressions arranged in the two adjacent sides of said plates, elastic means arranged between said plates and in said depressions, a pivot on said base plate, a shiftable holder adapted to swing on the pivot in a plane parallel to the movements of the carriage, and a copy holder carried by said shiftable holder. HERMANN STEIN.