US16138A - Feeding- paper to printietor-presses - Google Patents

Description

UNITED STATES PATENT OFFICE.

MOSES S. BEACH, OF BROOKLYN, NEWT YORK.

FEEDING PAPER T0 PRINTING-PRESSES.

Specification of Letters Patent No.

To all whom it 'may concern: y

Be it known that I, Moses S. BEACH, of the city of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Printing- Presses; and I do hereby declare that the following is a fulland eXact description thereof.

The nature of my invention consists in the construction and application to the im pression cylinders or some other part of Napier or other similar flat bed printing presses, or to type-revolving presses; of an improvement in the fingers, and the' contrivances for operating them; .by which the sheet of paper is so seized and returned to the types a second time, as to print it upon both sides at a single operation, and without checking or interfering with the regular and usual motions of the press, in all and any of its parts.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation, reference being had to the annexed drawings, forming part of this specification.

Figures I, II, III, IV, ,in the drawings, represent a vertical section o-f the cylinder, through the red line Z, Z, Fig. V; showing the manner in which the sheet is seized at one end and drawn into the press (Fig. I) and allowed to pass out, (Fig. II) in the Y first instance, and while being thus printed on the first side, seized at the opposite or tail end, (Fig. III) and, by the revolution of the cylinder, drawn in again, (Fig. IV) printed on the second side, and then discharged completed. Single red lines in these figures show the different positions of the paper while passing through and re turning-a number of parallel straight red lines in each figure indicating the position represent the inside of one of the side 16,138, dma December a, 185e.

frames, (N) with the various wheels at the positions necessary in producing the motions indicated in Figs. I, II, and IV; and Fig. VIII the inside of the other side frame (O) corresponding in the same way with Fig. III. All the wheels and mechanisms shown in these four figures, are connected with the side frames on which they are represented, except only the center cog wheels l and e which belong to the main shaft, I), and the finger cranks K and L which belong to the finger shafts F and Gr and move with the cylinder.

In these several figures A is the cylinder; B the feed board-an inclined shelf from which the sheets Aare first placed within reach of the fingers-and C, tape pulleys connected by endless tapes; the use of which is to press the sheet against the cylinderthe line of motion here as elsewhere in the drawings being indicated by arrows.

D and E, are twin fingers attached to i twin shafts F and G, which are fixed, one within the other. A detached view of these fingers and their attachment to the shafts, is given in parts l and 2 of Fig. I: The shaft G is threequarters cut away at the point where the fingers E are attached, to allow the necessary motion to the fingers D.

H are friction rollers, connected together by a shaft passing through, and near the face side of the lingers D. They are pressed by spiral springs I, in the fingers I), (acting upon the shaft which connects them) upon the cams J. These cams, which are cut into and form part of the twin shaft G, are of such shape as, when acted upon by the rollers, IFI, connected with the other twin shaft (F) to cause the twin fingers, D and E, to hug together when placed near each other, and to spread open as far as their shaft connections will admit, when opened apart more than 90 degrees. The dotted lines a show recesses in the cylinder for receiving the fingers when laid back.

K is a crank placed on one end of the twin shaft F, on one end of the cylinder, and L is a similar crank on shaft G, on the opposite end of the cylinder. These cranks are made with tripping points, b,- the crank K, being also provided with a small button, o. Parts 3 and 4, Fig. V, are detached representations of these cranks, showing their connections with the twin shafts F and Gr and with the twin fingers D and E.

IVI are the bearings of the twin shafts F, G; N and O, the two side frames; P the main shaft of the cylinder, to which the motive power is applied, and fixed to which are the cogwheels d and e.

Q is a stationary shield or guard, projecting from the side frame N, over the buttonV c, on finger crank K, to prevent the fingers from jumping or leaving their proper positions. It is provided with a slot f, into which the button c, is thrown at every third revolution of the cylinder, by the cam g, which is fixed to the cogwheel R, that wheel being moved by the main shaft cogwheel d. The revolution of the cylinder while the button is in this slot produces the finger motion seen in Fig. I. To prevent the tingers E, from rising to meet the fingers D; (Figs. I and VI) by the action of the cam, friction rollers and springs, connected with them; astationary shield S, is fixed to frame O, which projects over finger-crank L, and retains it in its place.

T is a movable tripping pin, held in place by and sliding through the side frame N.

It is projected on the inside sufficiently to catch the tripping point of the finger crank K, and produce the motion indicated in Figs. II and VII) by the spiral spring la; and when not required for that purpose, is pressed back through the frame by the cam z', on the inside of cog wheel U, acting upon and in connection with the lever y'. I-Iere, as in Figs. I and VI, it becomes necessary to prevent the fingers E from rising with the fingers D, and this is eEected by the movable shield V, (Fig. VIII) worked the same as the tripping pin, by two spiral springs and a lever, 7c, in connection with the cam, Z, on the inside of cog wheel, W, which, when needed, is made to project` over the finger-crank L while it recedes and allows the crank and fingers to turn by the power applied to the crank K, to effect the motion required in Figs. IV and IX. The next motion-seizing the tail end of the sheet (Fig. IID-is produced at the other end of the cylinder, as seen in Fig. VIII, by another tripping pin X, similar to the pin T, acted upon by spiral spring m, and lever n; the lever being moved by the cam, 0, on the inside of cog wheel Y.

The motion indicated in Figs. IV and IX is producedby the button c, on finger crank K, catching into and traveling through the moving slot or track p, which is fixed to the outside of cog wheel U,-this cog wheel receiving its motion from the main shaft cog wheel d, through the gearing wheels g, and r. In this instance the fingers E and their crank L, being left at liberty by the recesretained, is made to assume the position originally held by the irst or head end, and the sheet is carried around the second time with the reversed side to the type, after which it is finally discharged as seen in Figs. I and VI.

In these drawings it will be seen that provision is made for taking a new sheet at every third revolution of the impression cylinder, which is as frequently as it can be done. This may be varied to suit the requirement of the Ipress on Lwhich my improvement is to be placed, either by increasing the size of the cam wheels R, U, W', Y, or by reducing that of the main shaft cog wheels, d, c. n

To make use of my invention, as thus far described, it is necessary that the impression cylinder .be of such diameter as will conform to the size of the sheet to be printed; but, to avoid this necessity, the twin lingers may be placed upon a second cylinder, or its equivalent, adjusted at any desired distance from the impression cylind-er, with which it is geared to run, and the sheet, after being printed on the first side in the usual way may be passed to this second cylinder, and its ends changed, as I have described, by means of -my improved lingers; -and then returned to the impression cylinder there to be printed upon the second side also, in the usual way. This contrivance will admit the use of any sized sheet within the capacity of the press itself, and it may be applied to presses already constructed more readily than the one represented in the annexed drawings. In either case, however, the sheet changes its motion by the same process; and as it is subject to no restraints from confinement between tapes or otherwise, while so changing, the paper escapes all liability to be torn or thrown out of register, and the ink, by the free exposure to the air is greatly assisted in setting or fixing itself to the paper.

It has, for many years, been a leading object, particularly among the publishers of newspapers of extended circulation, and power press manufacturers, to cont-rive a method for printing both sides of the sheet at a single operation which, at the same time should not retard or in any wise interrupt the high rate of speed already attained in printing, nor complicate the machinery of the press. My invention accomplishes this much-desired end, almost without eX- lpense, and accomplishes it so completely and simply that it seems to leave nothing more to be wished for in the field which it occupies. It is peculiarly applicable, moreover, to book printing, because of the perfect register Which it must afford, and opens to that kind of Work the use of the most rapid presses, all of Which have heretofore Inail-man, and the carrier, before they leave the press.

I do not, however, claim the printing of sheets on both sides at one operation but y What I do claim as my invention and desire to secure by Letters Patent, is

Seizing the back or tail end of the sheet, and thus returning it to the types for a second impression; in the manner, substantially, as set forth.

M. S. BEACH. Witnesses EDGAR W. DAvIEs, J. HOLLANDER.

Images