US328939A - Sheet-delivery for oscillating-cylinder printing-machines - Google Patents

Description

(No Model.)

J. T. HAWKINS. SHEET DELIVERY FOR OSGILLATING GYLINDER PRINTING MACHINES.

No. 328,939. Patented Oct. 27, 1885.

Alla rizegv N. PETERS. Phom-Linw m nm, Wnhlnflnn. n. c.

deliverycylinder.

'issued November 14, 1876.

- above mentioned.

i the cylinder rotates freelyupon an eccentrical delivery-cylinder with its pawl and a one-' UNITED STATES PATENT trier.

JOHN T. HAWKINS, OF TAUNTON, MASSACHUSETTS.

SHEET-DELIVERY FOR OSCILLATING-CYLINDER PRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 328,939,dated October 27, 1885.

Application filed June 11, 1884.

To all whom it may concern.- V Be it known that I, JoHNT. HAWKINs,'of Taunton, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Sheet-Deliveries for Oscillating Cylinder Printinghlachines,

which improvements or invention are fully set forth and illustrated in the following specification and accompanying drawings.

The object of this invention is to adapt the general form of sheet-delivery illustrated in United States Patent No. 286,814, granted to me October 16, 1888, to a cylinder press in which the cylinder oscillates instead of continuouslyrevolving,asinthepatentabove mentioned. It is also the object to adapt this general form of sheet-delivery to that form of oscillating-cylinder press in which the machine at the back of the impression-cylinder is" occupied more or less by water or dampening rollers, as in lithographic presses, or by ink-rollers, as in the double-inking machine shown in United States Patent No. 184,337,

The invention consists of the parts particularly hereinafter described,and set forth in the claims. In the arrangement of the oscillating grippers and their mechanism in .Patent No. 286,814, above mentioned, said grippers and mechanism occupya position immediately below the delivery-cylinder and at the back of the impression-cylinder, which space in the lithographic machine is required for the dampening apparatus and rollers and in the double-inking machine by one set of ink-rollers.

For a description of all the parts of the oscillating grippers and their mechanism for taking the head of the sheet from the delivery-cylinder, not herein referred to by letters, reference may be made to Patent N 0. 286,814,

In the accompanying drawings, Figure 1 is a side elevation, partly in section, of those parts which constitute this invention as applied to an oscillating-cylinder press in which rockshaft. Fig, 2 is a rear elevation of the same, partly in section, the feed-board being omitted. Fig. 3 is a sectional elevation of a portion of the gear-wheel which actuates the toothed ratchet secured to the shaft of said Serial No. 134,559. (No model.)

operated, as shown in application filed by me" as Case Aof a series of three applications filed March 15, 1884, and bearing the Serial No. 124,297. This rock-shaft, B, when rotated into the position which holds the impressioncylinder B up from contact with the form, also carries the cylinder B a like distance to theleft, separating it from the adjoining cylinder during the retrograde or non-printing stroke of the machine, as will manifestly be the case by observing the relation of the parts in Fig. 1.

G is the delivery-cylinder or, preferably, a series of short cylinders secured to a shaft, 0, and carrying a series of grippers, g. Cylinder B carries the usual grippers, g.-

Secured tothe cylinder B or to its axis is a gear-wheel, B, and running freely upon the shaft 0 is a gear-wheel, B which meshes with the cylinder-gear B. The gear-wheel B carries a pawl, b, which engages the single notch or tooth of a single-toothed ratchet, 12, secured to the shaft 0. The shaft 0 is journaled'in the frames A, to which shaft is secured aidelivcry-cylinder or series of cylinders, O, carrying also a series of grippers, g g g are each operated to open and close in a The "grippers well-known manner not necessary'to be shown.

Secured to each of the shafts c and 0, respectively, are sprocket-wheels D D, upon which is run an endless chain, D.

The oscillating grippers S and their actuating mechanism are fully described in Patent No. 286,814, above mentioned, and differ in this case from that described in the abovementioned patent only in the operation of the stop-hinged double trip-lever L, which is in this case operated by a swell or elevation, S, upon the type-bed, instead of by a pin in the impression-cylinder.

F is the feed-board, and G a portion of the receiving-board.

Two shafts, k h are journaled in the frames A, to which shaftsare secured pressure-rollers h and h, to prevent the sheet from sliding upon the cylinders O and C until the entire length of it has passed from under them. I The air-blast pipe and its pump and mechanism described in Patent No. 286,814 are omitted here as unnecessary to illustrate this invention.

E is a brake operated by the eccentricity of the rock-shaft B, to press at the proper times upon a hub or collar, E, secured to shaft 0, to absorb the momentumof the deliverycylinders G and O and bring them to rest at the same time with the cylinder B at the termination of its direct or printing rotation. A series of cords or tapes, (1, run upon the delivery-cylinders O G.

In presses in which-Water or dampening rollers or inking-rollers and their apparatus are not used at the back of the impressioncylinder B, as in nearly all single-inking typographic presses, the delivery-cylinder O, the two sprocket-wheels D D, the chain D", and the cords or tapes d are dispensed with, and the oscillating grippers S and their mechanism are placed to coact directly with the delivery-cylinder O, and the receiving-board G is placed in the same relative position to the delivery-cylinder O, as shown in Fig. 1, with relation to the delivery-clinder G.

Theoperation of the mechanism above described is as follows: The sheet taken from the feed-board F by the grippers g is carried around during the printing revolution of the cylinder B until the grippers g and g meet at the nearest point of contact of cylinders B and 0, where it is released by the grippers g, and simultaneously grasped by grippers g, and by the latter carried to the top of cylinder 0, where it is released by them and carried face downward upon the cords or tapes d untilthe head of the sheet reaches the top of the cylinder 0. At this point the cylinder B will have reached the termination of its printing rotation, and the grippers y will have arrived at the proper point at the 1 top of cylinder .0 to grasp the head of the sheet, the relative positions of cylinders Oand 0 being so arranged as to make this distance conform to the length of a full sheet to be printed, and the cylinders O and 0 having been rotated during the printingstroke of the cylinder B through the instrumentality of the gear-wheel B the pawl b, and the one-toothed j ratchet b, the sprocket-Wheels D and D, and 5 chain D The brake E at this point clamps fast the shaft 0, and prevents any rotation during the retrograde or non-printing rota- I tion of the cylinder B. Thus the sheet reat the head by the grippers 9'. While the succeeding sheet passes through the same course or operation, the first sheet is carried around the cylinder 0' until the head reaches the oscillating grippers S, when it is released mains at rest upon the strings or cordsd, held,

by the grippers g and held and conveyed by the oscillating grippers S to the receivingboard G, and there held until the entire sheet has passed from under the pressure-rollers h, When it is flattened out upon the board G by the action of the air-blast, and then released by the oscillating grippers S, as fully described in Patent No. 286,814, above mentioned.

The operation of this mechanism as arranged for single-inkin g typographic presses that is to say, in all such presses as require no inking or water rollers at the back of the impression-cylinder, and therefore without the additional delivery-cylinder G, sprocket- Wheels D D, chain D and cords or tapes dis the same as described in Patent No. 286,814, except that the delivery-cylinder O is given an intermittent motion to conform it to the motions of an oscillating impress-ioncylinder, as described.

I do not herein claim the pawl-and-ratchet mechanism for operating the cylinder 0, nor the brake for holding the same, said parts being included in the claims of another pending application bearing the Serial No. 133,775, filed June 4, 1884. j

I do not limit myself to the method shownto operate the brake E, as this may be effected in many well-known ways, and would require to be differently operated in an oscillating-cylinder press in which an oscillating rock-shaft did not serve as bearings for the impression-cylinder to run upon.

Having thus fully described my improvements as of my invention, I claim- 1. In an oscillating impression cylinder printing-press, in combination with an intermittently rotated delivery cylinder pro-' vided with sheet-grippers, a series of oscillating grippers, as S, whereby said sheet- I05 grippers are caused to receive and partially deliver the shectduring one printing operation, to remain at rest during the non-printing operation, and to complete the delivery to the said oscillating grippers during the succeeding operation of printing the next sheet, substantially as and for'the purposes set forth.

2. In an oscillating-cylinder printing-press,

the combination of an oscillating impression I I 5 cylinder; as B, an intermittently-rotated delivery-cylinder or series of cylinders, as O, a second delivery-cylinder or series of cylinders, as 0', connected to the first deliverycylinder or series of cylinders by cords or tapes, as d, and intermittently rotated from the first delivery-cylinder or series of cylinders by means of sprocket-wheels, as D D, and a chain, as D", or other suitable means, and a series of oscillating grippers, as S, .sub- I2 5 stantially as and for the purposes set forth.

JOHN T. HAWKINS.

Witnesses: a

O. R. WATERBURY, FRANCIS P. REILLY.

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