US324253A - Oscillating-cylinder printing-machine - Google Patents

Description

(N0 ModeLj 2 Sheets-Sheet 1..

J. T. HAWKINS.

OSGILLATING CYLINDER PRINTING MACHINE.

Patented Aug. 11., 1885.

I N. PETERS PhulO-Lilhognphnr. Waflllnglon. 11c.

I I? f (No Model.) 2 Sheets-Sheet 2.

J T. HAWKINS. OSGILLATING CYLINDER PRINTING MACHINE. No; 324,253. Patented Aug. 11, 1885.

N. PETERS, Fholn-Lilhagraphun Wishingion. D. c.

UNITED STATES PATENT OFFICEo JOHN T. HAWKINS, OF TAUNTON, MASSACHUSETTS.

OS CILLATING-CYLINDER PRINTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 324,253, dated August 11, 1885,

Application filed June 2, 1884. (No model.)

To all whom it may concern Be it known that I, JOHN T. HAWKINS, of

I Taunton, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Oscillating-Cylinder Printing- Machines, which improvements or inventions are fully set forth and illustrated in the following specification and accompanying drawings.

This object of this invention is to provide an oscillating impression-cylinder having the under method of feeding the sheets, with simple automatic means of lowering and raisv ing the cylinder to and from the type bed or form, and also to provide the same character of means for operating said cylinder-grippers, which grippers take the sheet from the feedboard of the machine.

The invention consists of the parts herein particularly described, as set forth in the claims.

The general form of the printing-press illustrated in the accompanying drawings is the same as that illustrated in my application for Letters Patent filed on the 15th day of March, 1884,(Case A,) hearing the Serial No. 124,297. The invention herein described is, however, not confined to a machine driven by hand power alone, but maybe operated by any suitable power.

In the accompanying drawings, Figure 1 is a longitudinal vertical section of the press; and Fig. 2, an end elevation of the same from the right of Fig.1, partlyin section, with the feed-board removed. Fig. 3 is a side elevation of the impressioncylinder and the delivery-cylinder on a larger scale, a portion of the main side frames being broken away to more clearly show the parts. Fig. 4 shows Fig. 3 in plan, broken away in the central parts to economize space in the drawings. Fig. 5 shows in detail an incline on the typebed for operating the sheet-flier. (Not else *where clearly shown.)

All parts of the machine below the level of the type-bed are the same as those fully described in the above-mentioned application.

, (Serial No. 124, 297

The method of operating the machine by hand-power and the operation of the inkfountain roller are also fully described in the last-mentioned application, and the general design of this machine is throughout the same as that described in said application, except so far as said design involves this invention, to which invention the description herein is therefore confined.

In said drawings the several parts are respectively indicated by letters as follows: A A are the main side frames. B is the impression cylinder, running freely upon an ec centric rocl shaft, R, journaled in eccentric bushes R, which in turn are adjustably secured to the frames A. B is the type-bed, and B the rack secured thereto. B is a gearwheel secured to the impression-cylinder B, engaging rack B and B" is a pinion secured to a shaft, B journaled in the frames A, engaging the rack B power being applied to move the parts by the hand-crank B secured to one end of the shaft B In Fig. 2 certain details are omitted as difficult to clearly show on so small a scale.

In the cylinder B is journaled a grippershaft, 9, carrying a series of grippers, g, in the usual way. On one end of this shaft is secured an arm, 9 carrying a roller, 9

Secured to rock-shaft R is an arm, R and secured in two lugs extending from arm R are two impact screws or bolts It R.

B is a stud securely fastened to the end of cylinder B, which, in the operation of the ma chine, alternately impinges upon the head of the impact screws R R the latter being so spaced that the stud R will move the arm R",

one-quarter of a revolution for a complete revolution of the impression-cylinder B in either direction. The eccentricity of the rock-shaft R is so placed that, when downward, the impression-cylinder B will be in contact with the type or form, as shown in position in the drawings, and being rotated one-quarter of a revolution to the left, Fig. 3, it raises the cylinder B from contact with the form, and at the same time carries it an equal distance to the left.

Bivoted to the arm R at P is a two-armed lever, one arm of which, L, is outside and the other arm, L, inside of the arm R The inner of these arms, L, engages on its under side the roller 9 on the gripper-shaft arm 9", to open the grippers preparatory to receiving the sheet. The outer arm, L, engages a roller, 1?, running on a stud, 1?, extending from the frame A,the roller P running upon the straight inclined upper surface of lever-arm L to open the grippers g as the arm It is moved from left to right by the rotation of the impressioncylinder B. \Vhcn the cylinder B commences to rotate upon its printing stroke, the roller 9 leaves the under site of the arm L, thus also permitting the arm L to drop clear of the roller 1 preparatory to the arm B being moved to the left, Fig. 3, by the stud R5111]- pinging on the impact screw 1% through the last quarter of the rotation of the cylinder B. Thus the grippers g are opened when approaching the point at which they take the sheet from the i'eedboard, held slightly open when the impression-cylinder B is at the termination of its non-printing revolution, and allowed to quickly close upon the paper by'the action of the spring S, Fig. 2, at the first movement of the impression-cylinder B upon its printing revolution.

Projecting from the arm It is a V-shaped stud, Z, which engages a correspondinglyshaped notch in the end of each of two levers, T and T, both oscillating upon a stud, T, secured to the frame A.

Secured to the inner side of the lever T is a cam, T, which engages at the proper time a stud and roller, T projecting from and secured to the cylinder B, both cam and roller being so placed that the impinging of the stud and roller T upon the cam T" will unlock the lever from the V-shaped stud Z just previonsto the stud R impinging upon the impactbolt It".

Upon the inside of the notched lever T is secured an arm, T, carrying upon its lower end a roller, T. The roller Tengages an inclined surface, T, on the typebed at the proper time to unlock the notched lever T from the V-shaped stud Zjnst before the stud It impinges upon the impact-screw It upon the noirprinting rotation of the impression-cylinder B. The upward motion of the levers T and T is limited by two small pins, 1) p, inserted in them in proper position to come in contact with the edges of the frame A. The levers T T are pressed upward by two springs, S S, secured to the frame A. The upper curved surfaces of the levers T T are engaged by the end of the V-shaped stud I, in passing from one to the other, in such a way as to depress them until the V-shaped stud Z engages the corrcspondingly-shaped notch in the end of either lever T or T.

The common function of the stud Z, notched levers T T, cam T, arm T, roller T,inclined surface T upon the typebed, stud, and roller T", and the springs S S is to lock the rockshaft It in the two positions alternately corresponding to the two different positions in and out of contact with the form of the impres sion-cylinder B when printing and not printing, respectively.

In illustrating the parts shown in the drawings, the cylinder Bis shown in its downward position to make contact with the form as theform is run under it.

The printing operation is as follows: At the commencement of the printing stroke the stud It leaves the impact screw It, and, after the cylinder B has made about three-quarters of a revolution, said stud comes in contact with the impact screw B, the roller T having just previously engaged the cam T, and depressed the lever T sufficiently to release it from the V-shaped stud Z. By this time the form has passed completely under the cylinder B, and the remainder of the stroke is per formed while the last part of the form runs under the ink-rollers. During this remaining part of the revolution of the cylinder B the stud R carries the arm *5 into such position that the V- shaped stud Z engages the corresponding slot in the lever T. At the first movement of the cylinder B, on the abovementioned revolution, the roller 9 leaves the arm L, and thus permits the arm L to drop so as to become disengaged from the stud and roller P P. For the retrograde revolution the stud Bf in like manner makes about threequarters of a revolution, when it impinges again upon the impact screw R, the incline T having previously acted upon the roller T, so as to disengage the lever T from the V shaped stud Z. Du ring the last quarter of this revolution of cylinder B the arm L engages the stud and roller 1 P", thereby depressing the arm L, which arm, operating upon the rollers g, opens the grippers 1 and allows them to nearly close again by the time the cylinder B arrives at the termination of this revolution, the parts again taking their respective posit-ions just as shown in the drawings, the grippers y being nearly closed, and completely closed at the first movement again of the cylinder B upon its printing revolution. The shaft 12 has secured to it a cylinder or series of short cylinders, I), having a portion of their respective circumferences made to a smaller radius in order to clear the cylinder B during its retrograde or non-printing rcvo lution, which cylinder at that time is carried nearer to the cylinder or cylinders b by the action of the eecentrical rock-shaft B. The cylinder or cylinders b are provided with grippers G, carried upon a shaft, G, journaled in the cylinder or cylinders b. The grippers G are kept closed by the action of a spring, G surrounding the gripper-shaft ir.

Upon one end of the gripper-shaft G is socured an arm, (Shown in dotted lines in three different positions in Fig. 3.)

G G are cams for operating the grippers G by engaging the roller G at the proper times. Cams G are also shown, but in dotted lines only, in Fig. 3.

G is a cam for opening the grippers g of the cylinder B. ltunning loosely on shaft Z) is a gear-wheel, NV, engaging the gear-wheel B, the motion of cylinder B and its gear-wheel B" to and from gear-wheel "\V notbeing sutlicient to entirely disengage them.

()n a stud in one of the arms of the gcar- G carrying a roller, G

wheel \V is secured a pawl, \V, held in place by a spring, NV".

Secured to the shaft 1) is a one-toothed ratchet, W which is engaged by the pawl VV.

The respective diameters of the wheels NV and B are such that the wheel W makes eX- actly one turn for the printing revolution of the cylinder B, whether the latter cylinder makes more or less than a complete revolution, it so proportioned for other reasons. The brake It has one end partly encircling a disk, 71, secured to the shaft 1), and similarly its other end encircles in part a hub, h of the wheel B, the rod connecting the said two ends sliding in the lug h projecting from one of the frames A. The brake h is kept in contact with hub h" by a spring, h. This brake is operated at the proper time to press upon the disk h by the action of the eceentrical rockshaft B, so as to absorb the momentum of the cylinder or cylinders 12 and bring them to I rest at the termination of the printing revolution of the cylinder B, and thus insure the pawl N, dropping into the single notch of the ratchet at the termination of the retrograde revolution of the cylinder B, during which time the cylinder or cylinders b remain at rest. A series of tapes or cords, run upon the cylinder or cylinders b, and a series of pulleys are carried on ashaft journaled in the frames A. A series of fiy-fingers is secured to a rock-shaft, f, one operated by the pinion f secured to shaft f, the sector f oscillating upon a stud, f, secured in one of the frames A. The sector f is operated in onedirection by the spring f surrounding a connecting rod, f, which is slid in a lug, f, projecting from one of the frames A, and the bell-crank f, carrying the roller f which latter engages an incline, f on the type-bed B.

C is the fly-table or receiving-board. Pressurerollers c 0, carried on shafts c journaled in frames A, run over the margins of the sheet to hold it in contact with the cylinder or cylinders b.

The operation of the sheet-delivery mechanism is as follows: During the printing revolution of cylinder B the sheet is carried, as held by the grippers g, to the nearest point of approach of the cylinders B and b, where it is released by them through the action of cam G and simultaneously grasped by the grippers G by the action of the cam G the cylinder or cylinders I) being rotated by the engagement of the pawl W with the ratchet W From this point the grippers G convey the sheetwith the printed side in contact with the cylinder or cylinders b until by the action of the cam G they release it and it runs partly down upon the tapes or cords t, the head of the sheetjust stopping short of the free ends of the fly-fingers f. In this position the sheet, wit-h the cylinder or cylinders 12, remains at rest during the retrograde revolution of cylinder B. During the succeeding printing revolution of the cylinder B the succeeding sheet goes through the operation just described, while the first sheet passes down by the action of tapes t and pressurepulleys 0 over the fly-fingers f, which, at the proper time, by the action of the spring f, as permitted by the incline f on the bed B, throws the fly-fingers f, and with them the sheet, over to and upon the fly-board 0. During the retrograde revolution of cylinder B the flyfingers f return to the position shown in the drawings, ready to receive the succeeding sheet, andare held in that position by the level run for the roller f on the bed B.

I herein make no claim to the eccentric rock-shaft and bushings for operating the impression-cylinder B, the same being claimed in my pending application, Serial No. 115,603, filed December 26,1883; nor do Iherein claim the brake h and its connecting mechanism,

the same being claimed in my application, Serial No. 133,775, filed June 4, 1884, and now pending.

Having thus fully described my said improvements as of my invention, I claim- 1. In an oscillating-cylinder printing-press in which an impression-cylinder, as B, runs freely on an eccentrieal rock-shaft, as B, the combination of the following-named parts for automatically operating the grippers of said impression-cylinder, raising and lowering said impression-cylinder and locking it in its raised and lowered positions, respectively, namely: an arm, as R, secured to said eccentrical rock-shaft, carrying two lever-arms, as L L, bot-h secured to a rock-shaft carried in said arm, one of said levers, L, engaging a roller, as 1 on an arm secured to the grippershaft, the other lever,L,engaging a stationary stud and roller, as P P, a V-shaped stud, as l, secured in said arm B engaging two notched levers, as T and T, oscillating on a fixed fulcrum, as T, a stud and roller, as T*, carried in said impressioncylinder B, engaging a cam, as T secured to said lever T, a roller on one end of the said lever T, engaging an inclined surface, as T, on the typebed, a stud,as Ricarried in said impression-cylinder B, engaging two impact-screws, as R R carried in said arm B", and two springs reacting upon the said two levers T T, all coacting to automatically raise and lower said impression-cylinder B, to operate said grippers g, and lock the eccentrical rock-shaft in either of its two respective positions, substantially as set forth.

2. In an oscillating-cylinder printing-press, in combination with an oscillating impressioneylinder, as B, an intermittently-rotated cylinder or cylinders, as Z), provided with grippers, and having their peripheries of two different radii, substantially as and for the purposes set forth.

JOHN T. HAWKINS.

\Vitnesses:

0. It. WATERBURY, FRANCIS P. REILLY.

Images