US1507183A - Duplicator - Google Patents

Description

Sept. 2. 1924. 1,507,183

A.-ISAACS ET AL DUPLICATOR Filed Jan. 5, 1924 2 She8t5-$heet 1 IN VENTORS.

Sept. 2 1924.

1,507,183 A; ISAACS ET AL DUPLIGATOR Filed Jan. 5 1924 2 Sheets-Sheet. "2

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' ATTORNEY Patented Sept, 2, 1924.

UNITED STATES PATENT DFFECE.

ALBERT ISAACS, OF NEW YER-K, AND RICHARD BALIDAUF, OF HEMPSTEAD, HE /V YORK, ASSIGNORS TO THE BECK DUPLICATOR COMPANY, A CO'E?CRA.TIGI\I F NEN YORK.

DUPLICATOR.

Application filed January 5, 1924. Serial No. 684,592.

T 0 all whom it may concern:

Be it known that we, ALBERT ISAACS, a citizen of the United States, and a resident of the borough of Queens, city and State of New York, and RICHARD BALDAUF, a citizen of the United States, and a resident of I-Iempstead, in the county of Nassau and State of New York, have invented certain new and useful Improvements in Duplicators, of which the following is a specification.

The invention relates to that type of duplicator in which a negative or reversed impression of the matter to be copied is impressed upon a gelatinous duplicating surface or the like and positive impressions taken therefrom by bringing sheets of paper or the like successively into contact therewith.

The invention consists in the novel construction, arrangement and combination of various devices, elements and parts to form an attachment adapted for use with a duplicator of the type referred to, as set forth in the claims hereof, one embodiment of the same being illustrated in the accompanying drawings and described in this specification.

The particular form of duplicator for use in connection with which our present invention is best adapted, is that in which the lower portion is of well-understood construction, such as, for instance, is shown in Patent No. 1,372,67a, granted to Theodore Danheiser and Frederick Francis Fecher on March 29, 1921. In this form of duplicator a suitable frame is provided, comprising a bed over which extends an adhesive duplicating medium. In practice the duplicating medium which lies on the bed is only a portion of the large roll, which is unwound from and rewound upon reels journaled below the bed, but this construction is not a part of our present invention and need not be here described.

In duplicators of the type referred to, as for instance the Danheiser and Fecher construction above mentioned, there is, in operative connection withthe lower part of the machine, a paper-supporting member. This member is usually pivotally attached to the main portion of the duplicator, and is provided with an opening in the bottom so as to permit a portion of a sheet of paper placed upon said paper-supporting member to come into contact, through said opening, with said adhesive duplicating medium when the paper-supporting member is depressed thereupon, and upon the paper-supporting member being raised from the duplicating medium, the paper is withdrawn and allowed to fall flat upon. the duplicating medium.

In practice, however, it is found desirable to take impressions from said duplicating medium upon sheets of paper of different sizes. In the form of duplicator heretofore lrnown it has been necessary, when it is desired to change the size of paper upon which impressions are to be taken, to remove the pile of paper from the paper-supporting member and to replace the same with a pile of paper of different size. This is undesirable in practical work, as it is an operation which consumes considerable time, and requires not only the removal of the paper already in position, but also the placing of a new pile upon the machine, and careful registering of the same in proper relation to the opening and to the matter on the duplicating medium which is to be reproduced.

In our present invention we seek to obviate the inconveniences above referred to by providing an auxiliary paper-snppori'ing member, adapted to hold piles of 13211301 of different sizes, and mounting same rotatably with reference to the duplicating film in such a way as to permit any particular size sheet of paper desired to be'breught into operative relation with said duplicating film. i

In the accompanying drawings,l*ig. 1 represents a sideview of the upper portion of a duplicating machine having our in vention applied thereto;

Fig. 2 is a plan View of the same,

Fig. 3 is a section along the line 3 3 of Fig. 2; and

Fig. 4 is a plan view of the attachment which constitutes the principal. part of our invention, all as hereinafter described.

In carrying our invention into effect in the embodiment thereof which we have selected for description in this specification and illustration in the accompanying drawings, we provide in connection with a duplicator of some general type as hereinbefore referred to, an auxiliary paper-supporting device, which. is shown, without its appurtenant parts, in Fig. 4 of the draw ing. This paper-supporting member, in the formhere shown, is somewhat of the shape of a Maltese cross, having four arms extending laterally from the main portion. This device is adapted to be pivotally connected as shown at 11 (Figs. 1 and 3) to a member 12, which may be pivotally secured to the main portion of the duplicator, so as to be capable of being raised and lowered, the raised position being shown in dotted lines and the lowered position in full lines in Fig. 1. This member 12 may be of the general construction and may be attached in the same general manner, as is set forth, for instance, in the Danheiser and Fecher patent above'referred to. This member 12 may be equipped with paper-depressing means, comprising a bar 13, supported at'its ends by arms 14: which are pivotally secured to the member 12, so that the bar is adapted to be raised and lowered. Spring members 15 are provided which tend to uplift the bar, and a plate 16 may be provided tofa cilitate the depression of the same by the hand as hereinafter described.

The auxiliary paper-supporting device is preferably composed of a single piece of material (see Fig. 1) having an approximately central perforation 17 adapted to receive the pivot 11. 18, 18 are a series of depressions, adapted to engage with corresponding sockets in the member 12 (see Fig. 3) so as to hold the rotatable member when in any one of its several operative positions as hereinafter described. 19, 19 are a series of slots adapted'to hold paper-stops 20 for the inner ends of sheets of paper, and 21,

' 21 are similar slots adapted to hold lateral guides 22- for the sides of the outer portions of the sheets of paper placed upon the rotatable member. A pile of paper is represented in Fig. 3 and designated 23. It will be seen that the inner ends of the sheets of paper abut against the stop 20, their for ward portions being laterally guided by the stops 22, and the end forward portions extending over the outer edge or a'ro tatable member 12, under the paper-depressing bar 13, and are supported by the ledge 24 which forms a part of the member 12.. It will be observed that between the outer edge of the rotatable member and the ledge 2 is an open space. This open space lies directly above the adhesive film of the duplicator, and it willbe obvious. that if the bar 13 is depressed, the lower sheet of the pile of paper will be brought into contact with the adhesive duplicating medium.

The operation of our-invention is as follows: The stops 20 and may be adjusted at any desired place upon the rotatable mem her, so as to receive and hold four piles of paper of different sizes, as shown in Fig. 2, and it being desired to make duplicate copies upon sheets of one particular size of paper, the rotatable member is placed in position so that the outer edges of the sheets of paper of the desired size are brought to the front of the machine, the same passing under the bar 13 and the extreme edges resting upon the ledge as (see Fig. The rota-table member is held securely in this position by the depressions 1S. Thebar 13isthen depressed, which brings the lowermost sheet of paper into contact with the adhesive duplieating medium, the member 12 is then raised into the position shown in the dotted lines in Fig. 1, carrying with it the rotatable member and the paper thereon, exceptthe lowermost sheet of paper whichhas been brought into contact with the adhesive duplicating medium; this last-mentioned sheet of paper adheres to the duplicating medium and is stripped away from the bottom of the pile and lies flat upon the duplicating medium. Pres us is then aijiplied'to the sheet of paper by means of the hand, a roller, for in any desired manner, and the paper then removed from the duplicating medium, the member 12 depressed, and the operation repeated. lVhen it is desired. to take copies upon sheets of paper of some other size, the rotatable member is turned around until the paper of the desired size is brought to the frontof the machine, when the above described operation is performed upon such difl'erent sized paper.

The advantages of our invention will be obvious from what has been above said. It will be evident that by the use of the same, in the form here shown, four different sizes of paper can be placed upon the machine, any one of which sizes can be almost instantaneously substituted for any other size by simply rotating the auxiliary paper-sup porting member. lVe do not limit ourselves to the particular details of construction here shownand described. Instead of having an auxiliary rotatable member secured in the manner shown, it may be removably secured in some suitable manner so as tomalre it possible that a number of such paper-supporting members may be provided ready for use, having piles of paper the-rein of great. variety of assorted sizes, and that one set of sheets may be substituted for another by simply exchanging paper trays. The use of the in-' vention is of course not limited to piles of paper of different sizes; it is obvious that in some cases it might be desired to use a plurality of qualities or colors of paper, each of the same size; in such case the paper stops would be accordingly adjusted.

It would also obviously be within the spirit and scope of our invention to provide an auxiliary paper-supporting member which shall be slidably mounted. instead of rotatably mounted as above'described, and with which the different piles of paper shall be brought into operativevposition as required by sliding the paper-supporting member from one place to another.

Having thus described our invention, What We claim as new and desire to secure by Letters Patent is as follows:

1. An attachment for duplicators comprising a paper-supporting member adapted to be movably mounted upon a duplicator and to bear a plurality of piles of paper or the like and to be moved so as to bring a predetermined pile of paper into operative position with relation to said duplicator.

An attachment for duplicators comprising a papersupporting member adapted to be movably mounted upon a duplicator and to bear a plurality of piles of paper or the like and to be moved so as to bring a predetermined pile of paper into operative position With relation to said duplicator, and means adapted to secure said movable member in a predetermined position.

3. An attachment for duplicators comprising a paper-supporting member adapt ed to be rotatably mounted upon a duplicator and to bear a plurality of piles of paper or the like and to be turned so as to bring a predetermined pile of paper into operative position with relation to said duplicator.

4. An attachment for duplicators comprising a paper-supporting member adapted to be rotatably mounted upon a duplicator and to bear a plurality of piles of paper or the like and to be turned so as to bring a predetermined pile of paper into operative position with relation to said duplicator, and means adapted to secure said rotatable member in a predetermined position.

5. An attachment for duplicators comprising a paper-supporting member adapted to be rotatably mounted upon a duplicator and to bear a plurality of piles of paper or the like and to be turned so as to bring a predetermined pile of paper into operathe position With relation to said duplicator, and means adapted to secure said rotatable member in a predetermined position; said rotatable member being provided With stops adapted to hold sheets of paper placed thereon.

6. The combination With a duplicator comprising an adhesive duplicating medium adapted to receive an impression and to transfer the same; of a main supporting member movably mounted on said duplicator over said adhesive duplicating medium, a rotatable paper-supporting member pivotally secured to said main supporting memher, said main supporting member having an opening therein extending beyond the edge of said rotatable member, whereby a sheet of paper borne by said rotatable member and extending beyond the edge of the same and over said opening, may be depressed into contact With said adhesive duplicating medium.

7. An attachment for duplicators comprising a paper-supporting member adapted to be slidably mounted upon a duplicator and to bear a plurality of piles of paper or the like and to be moved so as to bring a predetermined pile into operative position with relation to said duplicator.

In Witness whereof We have hereunto signed our names this 27th day of December, 1923.

ALBERT ISAACS. RICHARD BALDAUF.

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