US257521A - Stencil-printing machine - Google Patents

Description

(No Model.)

A. G. SHANNON. STENGIL PRINTING MACHINE.

UNITED STATES PATENT OFFICE.

ALBERT (lr. SHANNON, OF SANTA ROSA, GALl FORNIA.

STENCILPRINTING MACHINE.

SPECIFICATION forming part ef Letters Patent No. 257,521, dated May 9, 18812.

Application filed November lS, 18H1. (No model.)

To all whom it may concern:

Be it known that I, ALBERT G. SHANNON, a citizen of the United States, residing at Santa Rosa, in the county of Sonoma and State of California,have invented certain new and useful 4Improvements in Stencil Printing Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertaius to make and use the same, reference being had to the accompanying drawings, and to the letters and ligures of reference marked thereon, which form a part of this specification.

Myinveution relates to a stencil-printing machine in which two cylinders are so arranged in a frame as to work against each other by means of cogs, and are fed byink from theinside. Stencil or perforated paper from which it is desired to take impressions is placed around one or both cylinders, so that paper passing between said cylinders can be printed on one or both sides. The cylinders are perforated and partially filled with ink, but s o arranged (by smaller closely-iittin g inside cylinders) that the ink can be turned oft' from either at pleasure. Therefore when one side only of a paper is to be printed the stencil from which the impressions are to be taken can be placed around one of the cylinders. The ink in the opposite cylinder should be shutoff and an nnperforated sheet placed around the same and held by means of the clamps thereon. A clean sheet of paper then passing between the cylinders will receive vthe impression from the cylinder carrying the stencil or perforated paper. 1f, however, it is desired to print both sides ot' a sheet at the same time with different subject-matter, perforated paper can be placed` around each of the cylinders, the ink turned on, and the paper moving between said cylinders necessarily receives the exact impression contained on the two stencils. A knife is placed on one cylinder, so as to cut the paper at each impression or revolution of the cylinders.

Figure lis a perspective view of cylinder A, (containing inclosed cylinders A and 60,) having the encircling-cloth partially removed, so as to show the parallel lines of holes through which the ink passes from the inner cylinders that saturates the cloth. Fig. 2 shows in perspective the cylinders A and a, A being partially broken away, that it within the cylinder A. Fig. 3 is a perspective of cylinder c. Fig. u

x spective view of my improved press. Fig. 8

is a bifureated handle, to be used, when desired, on cylinder A or A.

rlhe cylinders A and A2 have rows of holes I), which may be ot' any desired size or shape, running parallel with eachother from one end ofthe cylinders t0 the other, leaving as much space between the rows ofholes as is occupied by the diameter ot' a hole.

A is a cylinderhavingscvcral parallel lilies of holes, B, and is large enough to iit tight-ly inside of the cylinder A or A2, in which it is placed. The large cylinders A and A2 are alike in function and construction, and therefore each contains the ink-regulating cylinders A.' and a.

a is a cylinder, liquid-tight, either solid or hollow, and fits loosely in A or A2, and is designed to take up aportion ofthe spacein said cylinders. (l is a rod, which runs through and iits tightly `i n cylinders a and A', so as to canse them to turn with it, and also passes through the extensions E E.

E is an extension of portion of each head of the cylinders A A2, around which is fastened the cog-wheel F, and leaving space between the cog-wheels F and the cylinders A A2 for an axle, and leaving space on the outside of the cog-wheel for a crank or wheel or other power l to turn the machine. G isa handle at-the end ofthe rod d, which turns the rod d and cylinder Af, and is regulated by the scale C.

H. it are holes which are closed by a screwstopper, the head of each iittin g flush with the surfaces of the cylinders.

I is a groove in the cylinder A, running from one end to the other.

K represents sprin gs, to be used to fasten the stencilpaper 'that encircles cylinders A A2.

The ends of said paper meet and are inserted into the groove I.

L is the covering, ot'cloth or other substance, tting around the cylinders A A2. The cloth L is held firmly around and against the ends of the cylinders by screws J and springs K. The springs K are fastened at their inner ends in the groove I. They are dat and extend outward, and havearight-angled projection,which io gives the spring a T shape. Said spring tits closely against the ends of the stencil-paper, the paper being inserted under the springs, by which means it is secured to the cylinder.

M is the frame in which the machine works.

N represents grooves in which the ends oi" the cylinders A and A2 work when placed in the frame M.

O is a set-screw that fits against the axle to regulate the pressure ot' the cylinders one zo against the other.

I? represents a roller fitting in frame Q, around which a roll of paper is placed.

Q is a frame fastened to the i'rame M.

1^ It is a knife with sharp indentations on the edge, which may be fastened in the groove I.

If the two cylinders A A2 be placed in the frame M, with axles in the grooves N, the cogs F tting in each other, and a stencil-paper made by the electric pen or the needle typewriter patented by me November I, i881, and numbered 248,890, be placed around the cloth on cylinders A and A2, and fastened by means ot' the springs K, and the handle G be turned ou the graduated scale C so hole h be directly under the hole II, the holes b will then bc stopped by the solid portions of the interior surface ofthe cylinders A and A?, and the holes B will be stopped 'by the solid portions of the cylinders A'.

4o to the proper consistency by oil, be poured in holes II h, when in line, and the stoppers replaced, it will hold the same without leaking; and when the handle G is turned on the grad uated scale G until the holes i) come under the 5 holes B the ink escaping through said holes is absorbed and equally distributed on the cloth covering the surface. The end of paper around the roller Pis then placed between the cylinders A A2, which are revolved by means o ofthe power attached to the extension E, and the paper-stencil placed around each cylinder A A2 will be copied on the sides ot' the paper passing between said cylinders. It the knit'e R be pla-ced in the groove I in the cylinder A Il" printers7 ink, softened so that the pointed edges will work in the groove I of the cylinder A2, the printed paper passing between the cylinders A A2 will be cut ott' at cach revolution of said cylinders.

The handle S, Fig. 8, may, it' desired, be placed on the extensions E E of one ot' the 6o cylinders after the cog-wheels are removed, andthe said cylinder, by means of this handle, may be rolled on the paper to be printed, making a copy ot` the stencil around it at each revolution.

It is obvious that the two standards forining the frame Q may be set at any desired point on the side bars otl the frame M, and that roller P can also be made a length to conform therewith. By this means a roll ot' paper of' 7o any width can be used.

It must also be apparent that the uprights Q Q can be tlxed to the ends ol the frame M and the roller l) constructed a conforming length.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In a stencil-prii'lting machine, the cylin ders A and A2, having ink-receiving holes H, which are closed by screw-Stoppers, said cyl- 8o inders containing cylinders A', which are also provided with in k-receivin g holes h,so arran ged that the holes I-I and h can be placed in a direct line by means of the rod d, having the handle G, which is designed to be turned, when desired, on the scale C, the latter indicating the relative position ot' the holes H and h, the perforationsB b in the cylinders being so arranged as to be closed when H and It are opened, all substantially as described, and for the pur- 9o poses set forth.

2. The cylinders A`Z A', having perlorations B b, the former cloth-covered and provided with groove I, springs K, and knife It, in combination with cylinders A A', similarlyY pert'o- 95 rated, covered, grooved, and provided With springs, the groove in cylinder A being adapted for the working ot' the knife I{,and said cylinders A A2 geared together and adjustably mounted on frame lll, in the manner and for roo the purposes set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ALBERT G. SHANNON.

Witnesses: .i ROBERT A. THoMPsoN, REGINALD W. Trroiurson.

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