US684224A

US684224A - Cylinder-press.

Info

Publication number: US684224A
Application number: US4996201A
Authority: US
Inventors: Henry A Grandy
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-03-05
Filing date: 1901-03-05
Publication date: 1901-10-08
Anticipated expiration: 1918-10-08

Description

No. 684,224. Patented Oct. 8, I90l.

H. A. GRANDY.

I CYLINDER PRESS.

{Application filed Mar. 5, 1901.)

3 Sheets-Sheet I.

(No Model.)

9 2 4 7 6 2 i m MI ||ll dqw wl I ll! It m M 1M |0 n .il i W w I I 0 5 a No. 684,224. Patented Oct. 8, l90l. H. A. GRANDY.

CYLINDER PRESS.

(Application filed Mar. 5, 1901.)

(No llndal.)

3 h ms-Sheet 2.

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QYO-UTHQ, WAsHANGYON n c No. 684,224. Patented Oct. 8, I901; H. A. GRANDY.

CYLINDER PRESS.

(Application fllod Mar. 6, 1901.)

3 shuts-sum a.

(No Model.)

E E 5 E r H w UNITED STATES PATENT OFFICE.

HENRY A. GRANDY, OF SOMERVILLE, MASSACHUSETTS.

CYLINDE R-PRESS SPECIFICATION formingpart of Letters Patent NO. 684,224, dated October 8, 1901.

Application filed March a, 1901.

T0 aZZ whom it ntay concern:

Be it known that I, HENRY A. GRANDY, of Somervi'lle, in the county of Middlesex and State of Massachusetts,have invented certain new and useful Improvements in Cylinder- Presses, of which the following is a specification.

This invention has relation to paper-gripping mechanism for cylinder-presses; and it consists of certain improvements therein, which are illustrated upon the drawings, de scribed in the following specification, and pointed out in the appended claims.

Referring to the accompanying drawings, which form part of this specification, Figure 1 represents in end elevation a paper-feeding mechanism. Fig. 2 represents a plan view of the same. Fig. 3 represents a plan view of the gripper and finger mechanism. Figs. 4, 5, 6, and '7 illustrate the operation of the finger and gripper mechanism. Fig. 8 shows in detail the means for adjusting the cam in the finger and gripper mechanism.

On the drawings, 10 indicates the hollow impression-cylinder, which rotates with the shaft 11, upon which it is secured. This cylinder is formed of a shell with suitable ends. The shaft 11 is journaled upon a frame 12, which rises from the top of the press. Upon the cylinder at one end thereof are gear-teeth 13, intermeshing with teeth on the form-cylinder, (not shown,) by which the shaft 11 receives its rotation. The peripheral skin of the cylinder 10 is cut away, as indicated at 15 in Figs. 1 and 2, to receive the gripper and finger mechanism, the edge 1 1 serving as a member of the clamp of which the gripper is the other member. In the said recess or cutaway portion 15 there is passed a rock-shaft 16, to which at regular intervals are secured grippers 1'7. The grippers are adjustable along the shaft, each having a hub through which a set-screw 18 is passed into engagement with a clamping-block 1.9,placed in a groove in the hub and bearing against the shaft. The purpose of the grippers and the mechanism which operates them is to clamp the edge of a sheet of paper so that the paper will be rotated with the impression-cylinder a plurality of times in contact with the printing-plates on the form-cylinder, whereby the Serial No. 49,962. on model.)

The impression-cylinder rotates in peripheral unison with the form-cylinder, and the number of rotations which it receives may be varied in accordance with the number of colors which are to be printed upon the paper or the number of plates on the form-cylinder. Hence the gripper mechanism is actuated once during a predetermined number of rotations of the impression-cylinder.

The rock-shaft 16 is equipped on its end with a pinion 20, intermeshing with a seg mental rack 21, fulcrumed at 22 on the head of the cylinder 10. The gear-segment has a projecting end, to which an extension 23 is pivoted between its ends, as at 24:. On the end of the extension or part 23 there is a roll 26, which bears upon a disk 27, loose upon the shaft 11, a screw 25 being passed through said extension and bearing against said extension for the purpose of adjusting the roll relatively to the disk. The disk is held against rotation; but as the cylinder revolves the roll 26 sweeps around the periphery of the disk. The said disk has a groove or de-' pression 29, extending part-way across its periphery, Fig. 1, in which the roll 26 is adapted to drop when the disk is slid longitudinally or axially into the position shown in Fig. 2 to permit the oscillation of the segmental lever first in one direction and then in the other and the consequent rocking of the shaft 16. The disk or cam 27 is normally in position to prevent the roll 26 from drop ping into the groove 29, and thereby hold the segmental gear 21 against oscillation; but it is moved once for each predetermined number of rotations of the paper-cylinder to permit the roll 26 to drop into the depression and permit the actuation of the rock-shaft 16 and the grippers 17.

The mechanism for sliding the disk 27 includes the centrally-pivoted lever 28, having a trundle-roll in engagement with a pathcam 291 upon a shaft 30, which through the medium of

gears

31 and 32 is rotated by the shaft 11.. The path-cam 291 is so formed that the lever 28 is oscillated to slide the disk 27 into the position shown in Fig. 2 once for each rotation thereof, and as the ratio of the gears 32 31 is shown in the drawingsas one is to six it will be seen that the gripper rockseveral colors may be printed upon the paper.

shaft 16 will be actuated once' for each six rotations of the impression-cylinder. As is obvious, said path-cam may, however, be so constructed as to cause the actuation of the lever 28 more than once during each six rotations of the gripper rock-shaft, according to the number of jobs being printed-that is to say, if the mechanism be employed upon a color-press, such as described in the patent to me, No. 484,421, dated October 18, 1892, in which a plurality of color-plates are used for different colors, the gripper rock-shaft may be actuated once for each color-plate or once for a predetermined number of plates and a series of jobs be printed with different single colors or with two or more colors, as may be desired.

Normally the grippers are in the position shown in Fig. 4, so that they take over the clamping-surface 14 in position to clamp the paper thereagainst. Consequently when the rock-shaft is actuated it is for the purpose of raising the grippers relatively to the surface 14 and to permit the releasing of the printed sheet and the gripping of a substitute sheet. In addition to the grippers, however, I provide shoo-fiy fingers for initially raising the edge of the sheet to permit its delivery from the roll. These fingers are indicated at 33, and there is preferably a pair of them for each gripper 17. They are rigidly secured to a shaft 34, rigidly secured in collars 35, loose upon the rock-shaft 16. Set-screws 36, set in the collars 35, rigidly secure them to the shaft 34. Secured to the shaft 34 there is a lever 37, to one arm of which is attached a helical spring 38, having its other end secured to a convenient projection in the interior of the cylinder 10. The function of this spring is to hold the fingers tightly upon the clamping-surface 14 during a portion of the movement of the rock-shaft 16. To the longer arm 39 of the lever 37 there is adjustably attached the shank of a hook 40, which is curved in the are of a circle concentric with the rock-shaft 16. On a collar 41, adjacent the lever 37, there is a latch 42, adapted to engage with the hook. The collar 41 is rigidly secured to the rock-shaft 16, and as the shaft rotates the latch moves into contact with the hook, being held outwardly against the shank of the hook by a spring 43. By adjusting the shank of the hook upon the extension 39 the length of movement of the latch prior to its engagement with the hook may be varied, as will be understood. Consequently during the initial rotation of the rock-shaft 16 the fingers which are secured to the rock-shaft 34 remain stationary; but

when the latch engages the hook the shaft 34 and the collars 35 are carried around a short distance with the shaft 16 until the latch is disengaged from the hook, during which time the fingers are raised from the clamping-surface 14. For the purpose of disengaging the latch from the catch I employ an adjustable cam 44, which is affixed to the cylinder-head 45, as shown in Fig. 3. This cam has an inclined or beveled surface against 7 which the extension on the side of the latch may engage, the cam itself being curved in the arc of a circle, so that as the latch continues its movement it will be held from again engagingv the hook, but will be snapped quickly back into position by the spring 38. The cam is formed upon a collar 46, loose on the shaft 16, but held in any desirable position by a clamping-screw 47, passed through a slot 48 in the cylinder-head and adapted to engage any one of a plurality of apertures in the said collar.

The operation of the device is as follows:

crum to move the cam-disk 27 into the posi-' tion shown in Fig. 2 to permit the depres- At the proper s'ion of the roll 26 and the consequent rock- 7 ing of the segment 21 and the partial rotation of the shaft 16. \Vhen the shaft commences its rotation, the grippers are swung from the position shown in Fig. 4 to the position shown in Fig. 5 before the latch engages the hook, the fingers remaining during this time upon the clamping-surface 14. As the rock-shaft continues its movement the parts IO) I assume the positions shown in Fig. 6, where in the latch is indicated as just disengaged from the hook. During this slight movement of the hook by reason of its engagement with the latch the fingers have been raised to the position shown in Fig. 6 to lift the edge of the paper and permit the access of air '1 therebeneath, so that the strippingof the paper from the impression-cylinder is easily accomplished by the delivering mechanism. AL

though the fingers at this time, the latch havin g been disengaged from the hook, return to original position, yet the grippers are not re- 7 turned until the gear-segment 21 is oscillated in the other direction, and consequently time is given for the insertion of the edge of another sheet of paper in proper position for the grippers to engage it and clamp it against clamping-surface 14.

The mechanism thus described, while particularly applicable for machines of the type illustrated in the said patent to me,l\ 'o.484,421,

may be employed with facility for presses of other types. 1

Having thus explained the nature of the ing and using the same, although without attempting to set forth all of the forms in which it may be made or all of the modes of its use, I declare that what I claim is- 1. The combination with a cylinder, grip- I25 1 invention and described a way of construct- V V 7 per mechanism includinga row of grippers" for gripping the edge of a sheet of paper; means actuated by the gripping mechanism for raising said edge to discharge said sheet; andprovisions whereby said means are not actuated until said grippers have been moved a considerable distance to inoperative position.

2. The combination with a cylinder having a clamping-surface, of a row of grippers coacting with said surface, fingers actuated by said row of grippers for raising the edge of the paper from said surface, after said grippers have been moved to inoperative position; and provisions whereby said fingers remain inactive during theinitial movement of said grippers.

3. The combination with a cylinder having a clamping-surface, of a rock-shaft having grippers coacting with said surface, paperlifting fingers supported upon and actuated by said rock-shaft, and provisions whereby said fingers remain inactive during the initial movement of said grippers.

a. The combination with a cylinder having a clamping-surface, of a rock-shaft having grippers coacting with said surface, paperlifting fingers, and hook-and-latch mechanism between said fingers and said shaft.

5. The combination with a cylinder having a clamping-surface, of an oscillatory gripper coaeting with said surface, a paper-raisingfinger, and means for intermittingly connecting said finger to said gripper, each time a gripper is actuated.

. 6. The combination with a cylinder having a clamping-surface, of a gripper coacting with said surface to clamp the edge of a sheet of paper, a finger adapted to raise said edge from said surface, means for raising said gripper from and lowering it toward said surface, and means actuated by the gripper-operating means for raising said finger after the gripper is raised and lowering it before said gripper is lowered.

7. The combination with a cylinder having a clamping -surface, of a gripper coact-ing with said surface to clamp the edge of a sheet of paper, a finger adapted to raise said edge from said surface, of means for imparting an opening and closing movement to said gripper, and means operated by the gripper-0perating means for actuating said finger to raise the edge of the paper when the gripper is open. v

8. The combination with a cylinder having a clamping-surface, of a rock-shaft having a gripper, a paper-raising finger, a hook to engage and actuate said finger, and a cam to disengage said finger from said hook.

9. The combination with a multicolor rotary form-cylinder, of a paper-feeding cylinder geared thereto and having a clampingsurface, grippers coacting with said surface, a gear and segment for actuating said gripper, a movable cam adapted to coact with said segment to operate it, a shaft geared to said paper-feeding cylinder, and a cam on said shaft and lever mechanism coacting with said second-mentioned cam for moving the firstmentioned cam, to cause the operation of said grippers a predetermined number of times for each rotation of said form cylinder.

In testimony whereof I have affixed my signature in presence of two witnesses.

HENRY A. GRANDY. Witnesses:

A. D. HARRISON, GEORGE PEZZETTI.