US271333A - Joseph w - Google Patents

Description

(No Model.)

J. W. HOPKINS.

PRINTING PRESS.

Patented Jan. 30, 1883',

N, PEIERS. muwmm nwr. Wnhinglcn. n. c.

UNITED STATES PATENT UFFICE.

JosnPH w. HOPKINS, on NEW 'YORK, ASSIGNOR TO enonen w. GARNAR,

' or FLUSHING, N. Y.

PRINTING-PRESS.

SPECIFICATION formingpart of Letters Patent No. 271,333, dated January 30, 1883.

Application filed January 16, 1882. (No model.)

To all whom it may concern Be it known that I, JosEPn W. HOPKINS, of the city and State of New York, have invented an Improvement in Printing-Presses,

of which the following is a specification.

Printing presses have been made with a chase and form suspended below a bed, the types being raised for inking and pressed down upon the paper laid upon the platen, and an apron has been drawn along over the platen toprevent injury by offsets.

My improvement is for simplifying the construction of the press, for regulating the position of the ink-plate to the types, so that the same will be properly in line when the roller passes from one to the other, and for moving theinkiug-rollerand applying theproperpressure to the same for inking the types.

In the drawings, Figure l is a vertical section of the press, and Fig. 2 is an elevation at the side where the sheets are fed in. Fig. 3 is a section in larger size of part of the ink-table. The frames A A are united by tie-bolts I) and by the impression-platen 0. These frames are adapted to receive the parts hereinafter described.

The main driving-shaft'e is in bearings upon the frames A A, and it is provided with a driving-pulley, and by preference with a fly-wheel, c. The cr'ank-shaftfis connected to the driving-shaft by the wheel f and pinion f At the ends of the crankshaftf, outside the frames A A, are the cranks g and connectingrods h to thefolloweror bed k, which is adapted at its ends to sliding up and down the guides or openings in the frames A A, and there are the projecting studs 2', that receive the upper ends of the eonnecting-rods h, so that the bed is raised and lowered by the action of the cranks g.

The chase and types Z are fastened upon the under side of the bed in any convenient manner.

There are tables m m for the sheets to be printed. These are on the same level as the platen c, and the tympan or smut-sheet n is passed across the platen and wound upon the rollers o and 1), there being guide-bars 0'10 at the level of the platen, around which the sheet passes.

At one end of the roller 0 is a ratchetwheel,

' a screw-thread on its surface.

and the lever q and hook-pawl 3 are employed to rotate the roller 0 progressively, said lever being moved at the longer end by a stud, 4, on one of the connecting-rods h, and the spring 5 returning the lever to a normal position and causing the pawl to take up another tooth on the ratchet. Bythis means the apron is moved along progressively as the printing is effected, the apron being drawn off the rollerp as it is wound upon the roller 0. It may be wound back upon the rollerp by a handle or crank applied to the end of the shaft of the roller 1).

The inking-table sis circular. It is provided with a ratchetwheel, s, screwed to the back, and between the table and ratchet-wheel is the flat disk-head of the stationary axis 1. for supporting such bed. This axis is made with It passes through an eye at the end of the arm a, that' extends out from a cross-bar, a, attached to the side frames, AA, and there are nuts upon t above and below the arm a, so that the axis of the ink-table can be moved up or down to adjust the edge of the ink-table in its proper relative position to the surfaces of the types, so that the inking-roller '0 may pass freely from such types totheink-table, or the reverse.

The inking-roller n is supported at its ends in bearings at the lower ends of the swinging arms to, the upper ends of such arms being round, as at 6, and passing through enlargements of the rock-shaft n, that is in bearings at the upper ends of the frames A A.

The link 8 from one of the connecting-rods h to an arm, 9, upon the rock-shaft '0, serves to give the required amount of movement, and there are guideways at 10 upon the inner faces of the frames A, beneath which the ends ot'the inking roller axis pass, and the springs 14 9o serve to draw the arms to endwise and press the inking-roller against the types; but these guides prevent the inking-roller being lifted by the springs as it is passed from the types to the ink-table, or the reverse.

The arm 9 at the end of the rock-shaft has a clamping-screw at its eye, so that the parts can be adj usted to move theinking-roller across the face of the types at the time the bed reaches its highest point, and then move back across the face of the types and pass to the inkingtable 8, where the ink is worked and spread 1. The combination,with thetype-bed, guided at its ends by the slides in the frames A, of the connecting-rods, actuating cranks, inkingtable, the rock-shaft n at the top of the frames, the arms to, sliding through the rock-shaft, the

This ink-table inking-roller 0, carried by such arms and passing across below theinking-table and the types, the contractile springs 14, the arm 9 upon the rock-shaft, and the link 8 to the connectingrod h, siibstantially asset forth.

2. The ink ing-table s and ratchet-wheel s, in combination with the stationary screw-axis, having a flat disk-head, the stationary arm u, and the nuts upon the screw above and below the arm 1, for adjusting the inking-table up or down, substantially as set forth.

Signed by me this 7th day of January, A. D. 1882.

JOSEPH W. HOPKINS. Witnesses:

GEO. T. PINCKNEY, HAROLD SERRELL.

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