US1025894A - Printing-press. - Google Patents

Description

J. WHITE.

PRINTIEG PRESS. APPLIOATION FILED AUG.9, 1910. mgmggq Patented May 7, 1912.

Z SHEETSSHEET 1-.

J. WHITE.

PRINTING PRESS.

APPLICATION FILED me e, 1910.

.2 SHEETSSHEET 2.

jiT ms 7" UNITED sTATEsrATEnT. onmon.

JOSEPH WHITE, OF BEECHWOOD HEIGHTS, NEW JERSEY, A SSIGNOR TO HALL PRINTING PRESS COMPANY, DUNELLEN, NEW J EBSEY, A CORPORATION OF NEW JERSEY.

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Application filed August 9 which includes a form carrying cylinder and an impressioncylinder wherein these printing cylinders make a plurality of revolutions to one impression; the impression cylinder taking the sheet 'on'one revolution and delivering it ozi another revolution, and the plate cylinder in its revolutions causing the form to pass over the ink rollers twice for the purpose of inking the same. In

this type of machine during one revolution the sheet is presented to the cylinder surface and an impression taken." thereon in which case the cylinders are inllprinting relationwith one another, and in the next revolution the sheet is delivered, and the impressiongsurface passes the form surface with the printing cylinders slightly apart.

This II. .kes it necessary to cause one or both of the cylinders to be moved into'an'd out of impression relation once for each printing operation. "It is usual to move the impression cylinder. but this has its disadvantages due to therelation of the parts composing the gripper' taking mechanism being altered relatively and causing inaccuracies and difli-' culty in registering the sheets to be printed.

1 have arranged this machine so that the plate cylinder 1s moved instead of the impression cylinder, and inorder to keep the inking rollers in proper relation to theform, I have arranged the mechanism so; that the form rollers will remain fixed relatively to the form cylinder as it" is caused to move to and from\ the impression cylinder. By this arrangement inking of the form is properly accomplished and at the same time the impressionl cylinder can be located in fixed bearings, thus admitting of greater accuracy ofvregister than if placed in movable bearings.

The machine embodying these improve- Specifieation of Letters Patent.

, 1910. .Serial No. 576,418.

accompanying form roller carriage moved away from the form cylinder. Fig. 3 is a sectional elevation showing the roller carriage moving mechanism.

bearings 2 which are mounted in the side frames 3 of the machine. These bearing are preferably fixed and non-adjustable. The form cylinder 4 is. mounted in the side which maybe of any usual or well-known ings 5, whichare rocked to raise and lower sion cylinder. The mechanism for moving -these boxes may be varied widely, .but as illustrated it preferably-consists of a rockshaft 6 upon either end offwhich are fastened rock levers 7, ,upon which is fastened the stud 8 which passes through the eye 9 on the end of the connecting rod 10, said connecting rod having a turn-buckle 11 (which has the usual right and 'lefthanded screw), the other end of which is'fastened in "the connection 12, on which is' formed the eye 13 which moves on the studl, which .is. fastened on the arms 15, which are formed on the eccentric journal boxes 5, which move the plate cylinder. I

The turn-buckle herein mentioned is for the purpose ofregulatingthe amount of printing pressure between the two cylinders. This method} is preferably employed, 'although pressure-controlling means might otherwise be devised without departing from the principles of the invention. 4 The driving mechanism of the machine consists of the shaft 16 to which is applied "the usual pulley (not shown), and upon this shaft .is pinion 17 meshing with an intermediate gear 18 mounted on the stud 19 gear118 meshes with a gear 20 fastened to the plate cylinder to and from the impres-,

in the rear side frameof the machine. This PatentedMay 7, 1912. v

chine, showing the cylinders tripped and the Impression cylinder 1 is 'journaled in the frames 3.- of the machine in movable bearings type, but are preferably the eccentric bear- I the impression cylinder, and the gear 20 -meshes wit-h a gear 21 fastened to the form erated may be varied widely; but as illustrated consists of a cam 24 which actuates a lever 25 which is pivoted on the stud 26 mounted in the side frame, one end of said lever holding therroller 27 which is held in the cam path, and the other end has a pin 28 upon which is pivoted a' connection 29 which has formed upon it a Mg 30, and in it a slot 31, through which is placed a pin 32 which is mounted in lever 33 which is fastened on the rockshaft/Y. This pin 32- also has mounted on it a hook 36 which normally passes over the lug 30. As the con nection 29 is reciprocated to and fro, the

v hook 36, engaging the lug causes the le- ,tothe eccentric cylinder boxes,

- lmpression with the impression cylinder.

ver 33 to be oscillated, which rocks the shaft 6 and thereby moves theconnections causing the cylinder to rise and fall into The, machine is provided with a feed board 35 upon which the sheets are placed. These sheets are presented to grippers 36 in the impression cylinder and on the first revolution of the cylinder the sheet is taken from the feed board and at the contact point of the two cylinders receives its impres'sion. During this revolution the form cylinder is raised and in printing contact When the grippers pass the delivery point they open up and allow the sheet to pass over the strippers 37 on to the delivery tapes 38. In the next revolution of the cylinders before the leading end of the impression cylinderreaches the impression point, the platecylinder by. means of the mechanism previously described, has been moved out of contact with the impression cylinder, and the impression surface passes the form surface out of contact and therefore does not receive an impression during this revolution of the cylinder.

It is desirable to keep the form rollers in contact with the plate cylinder during the entire operation of printing. This is accomplished by moving the ink roller supports so as to keep a relatively fixed distance-between the form cylinder and the ink rollers, These rollers may be carried on oneor more carriers and receive the required motion in various ways, but the are preferably mounted upon a pair 0 ink frames which in addition to holding the form rollers 10 also hold the distributing rollers and mechanism, which is of any usual or'well-known type, which as shown,

and out of 1 The frames 39 are supported on a pair of shafts 48 and 49 whic pass .throug 1 holes formed in tho frames.

These shafts 48 and 49 are fastened to eccentric sleeves, said' sleeves being clu licated on the other side of the machine. hese sleeves are in turn mounted on carriers 52 which are supported on a bed of rollers 53, said bed of rollers in turn resting on the base 54 of the machine.

On the front side of the machine as shown, the eccentric sleeves have arms 55 and 56 formed 011 them, which are joined together by means of the connccl 57. the rock lever 7 on the front side of the machine has an arm 58 formed on it to which is fastened a stud 59 in which is pivoted a connection 60 which has a hook 61 formed on its other end, which normally pngagcs a pin 62 fastened in the arm 55; by means of the parts previously described it can be seen that when the rockshaft 6 is moved, it will 0 erate the eccentric boxes of the form cyliner, causing the cylinder to rise and lower, and will also operate the shafts 4:8 and 49 of the roller carrier, causing the form rollers to rise and lower.

The eccentric boxes 15 and the eccentric sleeves 55 and 56 have the same amount of eccentricity. The cylinder box arms 15 and.

the ink frame carrier eccentric sleeve arms 55 and 56 are of the same length, and the angular relation of the eccentric centers to the shaft centers being made alike, it can be seen that the axis of the plate cylinder and the axes of the form rollers will .move through arcs of the same length and parallel to each other and thereby maintain their relative distances, thus keeping the form rollers in p oper contact with the form. As is Well known, it is necessary to throw offthe impression at times, one of thc objects being toink the form before printing operation begins. disconnecting the rockshaft from its actuating mechanism so that the movement imparted by the can will be inoperative upon it. By means of manual connections notshowmthe hook 36 is raised out of the .path of the lug 30 so that when the connection .29 oscillates forward, instead of moving 'therockshaft, it slides upon the pin 32, leaving the rockshaft and all its connections stationary.

In order to remove the rollers from the machine for the purpose of cleaning them or for other purposes, the carriers 52 are mounted on the bed of rollers 53, and when This is accomplished by these carriers are disconnected from the frame by removing the pin Gtfrom the eyes 63 formed on the carriers, and lifting the hook 61 off the pin 62, the ink frame can be pushed back away from the form; the position of the press at such time being as shown in Fig. 2.

hat I claim is:

1. In a printing machine, the combination of an impression c linder, a form carrying cylinder, an ink r0 ler adjacent to the form' cylinder, a support for said ink roller, means for moving said form cylinder into and out of printing relation with the impression cylinder during each printing operation, means for moving said ink roller support so as to maintain a relatively fixed axial relation between the form cylinder and the ink roller; and actuating means for operating the cylinder and the ink-roller-supportmoving means so arranged that said actuating means may be disconnected for the purpose of maintaining the form cylinder in trippedp'osition and the ink form roller in inking relation to the form. i

'2. In a printing machine, the combination of an impression cylinder, a form carrying an ink roller adjacent to the form a frame for said ink roller, eccenfor the form cylinder and eccylinder, cylinder, tric supports ink roller but maintain a relatively fixed axial relation between them.

. 3. In a printing machine, the combination of a form cylinder, a pair of eccentric bearings for said form cylinder, an ink frame, an ink frame carriage, ink rollers for said ink frame, eccentric bearings mounted in said carriage, a pair of shafts for supporting the ink frames fastened to said eccen-- tries, means for rocking all the said eccentric bearings for the purpose of moving the form cylinder and the form rollers, and

other.

In witness whereof, I have hereunto set my hand in the presence of tWo subscribing Witnesses.

JOSEPH WHITE.

Witnesses:

Lnwrs R. SoHormLn, PHILIP W. HALL.

maintaining an axial fixed relation to each centric supports for the ink frame so arranged as to move the form cylinder and the

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