US826733A - Duplicating apparatus. - Google Patents

Description

- Nth 826,733. PATENT'ED JULY 24, 1906.

E. R. MOORE. DUPLIGATING APPARATUS.

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EDWIN R. MOORE, OF ST. PAUL, MINNESOTA.

DUPLICATING APPARATUS.

NO 826,733. Specification of Letters Patent. Patented July 24:, 1906. Application filed February 27, 1906. Serial No. 308,278-

To all whom it may concern: cation will make everything clearly under- Be it known that I, EDWIN R. MOORE, a stood. citizen of the United States, residing at N o. Figure 1 is a perspective view of my in- 1905 Iglehart street, St. Paul, in the county vention closed. Fig. 2 shows it open, (all the 5 of Ramsey and State of Minnesota, have indrawings representing it without the stencil.)

vented a new and useful Duplicating Appa- Fig. 3 1s a sectional view of the construction,

ratus, of which thefollowing'is a speci cation. showing especially the central ink-table, inky invention relates to an apparatus for supply, and printing-surface. Fig. 4 is a duplicating handwriting and type-writing, so view of the hand-roller.

IO that letters, circulars, notices, and the like A represents a board about eleven inches maybe made quicklyjcheaply, and legibly wide and thirteen inches long, to which is in large or small quantities. fastened by hinges at F a frame B of the same 's invention refers especially to that dimensions as A. In the center of B, but a class of devices whereby paper, very soft and trifle smaller than the opening E of the frame I 5 fibrous, having been coated with wax or par- B, I fasten by screws J J a thin board I.

aflin is then cut with the steel dies of a type- Upon the top of the central base I is securely writing machine or perforated by the point fastened at its edges a thin level smooth slab of a stylus, such stenciled characters in the of slate H the same width as the central base wax sheet being afterward reproduced by I, but about one-half inch longer. On top of 2o rollers with ink upon their surface pressing the slate H is laid a piece of best-quality cotthe ink through the open stenci to a sheet of ton flannel G the exact length and width of 7 5 paper placed in contact. the slate H, (the cotton flannel is laid so that am aware that waxed paper as stencils the soft cotton side is uppermost.) Then for duplicating letters is now in use. I also over that is laid a piece of fine muslin D an :5 know that smallink-pads for rubber handinch or so longer and Wider than G or H, so

stamps are used in great numbers. While that when stretched upon the cotton cloth G my apparatus appears somewhat similar to its edges project all around. To make it fit those inventions, yet it differs greatly from tight and smooth, I press strips of wood K them in construction and in operation. 'I under the projecting edges of the slate H.

30 require and use a perfectly level' and smooth Then when the cover-frame B is closed down ink-bed of slate, glass, or metal, my ink-satuover A and fastened by the hooks C C a rated fabric resting upon the slate holding a smooth printing-surface a pears just a little large uantit of ink without runnin over higher than the surroun ing frame B, the the si es of t e ink-plate, yet respon g to opening E neatly fitting over the slate H and 35 the lightest pressure above. The important its foundation I.

' and essential difference between other sten- In actual use the operation is as follows: 0 oil duplicating systems and mine is this: Having raised the frame B and thoroughly ther inventors use rollers of felt or other saturated the cloth G and muslin cover D material to which ink is applied and then with ink suitable for the purpose, a sheet of to pressed through the wax-cut stencils to the Wax-cut'stencil-paper is laid down-upon the paper below, often resultingin the ink oozing central printin surface. The frame B is 5 over the edges, frequently soiling the hands again fastened own by the brass hooks C C, and clothing of the operator. My deviceis thus holding everything tight and smooth. entirely different, for my absorbent ink-re A sheet of paper is then laid upon the stencil- .5 taining fabric acts as a reservoir or ink-suppaper, the printers roller, Fi 4, is rolled ply, and my roller is at all times perfectly across the paper, and all the c aracters andnxoo dr and clean and free from ink. I use the letters out into the stencil will be reproduced roller merel to ap ly the even gentle preson the sheet of paper, and with one inking sure upon the blan paper that receives the many copies may be taken in the simple man- 0 ink from the cloth beneath the stencil, so ner 'ust described.

that With the reatest ease and neatness I Vl hile I mention slate for the ink-bed surcan from one in 'ng obtain a large number of face and cotton flannel as an absorbent inkgood co ies. retaining material, I do not confine myself to The rawings that accompany this specifithese, but am free to use others that would answer the same purpose. Neither do I limit myself to one layer of-fabric. Ifind that sometiines two layers work better than one, depending somewhat upon the quality of the fa ric or the ink used.

What claim in my invention, and desire to secure by Letters Patent, is

A device of the class described comprising1 a base A, a flat plate I of less length an breadth secured thereon, a second plate H of non-yielding material mounted on said firstnained plate and overlapping the edges thereof and having a smooth upper surface, a sheet of absorbent material G corresponding in length and breadth with said plate H, and

a sheet D of comparatively thin fabric covering said sheet G and extending beyond the the edges of said sheet D and drawing the same snugly over said sheet G, and a cover B hinged on said base'A and having an opening to receive said plates and sheets, the top of said cover when closed being flush substantially with said sheet D, substantially as described. v I

In testimony whereof I have signed my name to this specification in the presenceof two subscribing Witnesses;

EDWIN RJMOORE.

Witnesses:

D. M. BROWN, S. M. WILLIAMS.

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