US316665A - Printing-presses - Google Patents

Description

W. SCOTT. Y DELIVER-Y' APPARATUSTOR PRINTINGNPRBSSES. V No. 316,665. Patented Arpr@ Z8, 1885..

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W. SCOTT.

DELIVERY APPARATUS POR PRINTING PRESSES. No. 316,665. Patented Apr. 28, 18815.

ATENE Erica WALTER sooTT, or PLAINEIELD, NEW JEEsEY.

DELIVERY APPARATUS FOR' PRINTING-PRESSES.

SPECIFICATION forming part of Letters Patent No. 316,665, dated April 28,1885.

Application filed December 28, 1883.

To all whom it may concern:

Be it known that I, WALTER SCOTT, of Plaineld, in the county of Union and State of New Jersey, have invented an Improvement in Delivery Apparatus for Printing Presses, of which the following is a specification.

Printing-presses have been made with a swinging frame having grippers at its outer end to grasp the sheet and carry the same over to the table upon which it is deposited.

My invention relates to this class of printing-presses; and it consists in the combinations of devices, hereinafter set forth, whereby the said mechanism is simpliiied and rendered more efficient in its operation.

This invention may be applied to a stopcylindcr press in which the impression-cylinder remains stationary during the movement of the reciprocating bed in one direction, and

in the drawings I have shown the parts as' adapted to such a press 5 but the improvements may be used with any cylinder printing-press in which the impression-cylinder makes either an elevation of the cams, lever, and lower end of one ofthe ily-frames. Fig. 6 shows the same parts, but with the cams and segments outside the frame.

TheV impression-cylinder A, feed-board B, grippers C, frame D, shaft E, and crank F, or other mechanism for actuating the type-bed are of any desired character.

I have represented in Fig. 1 the deliverycylinder G having gri ppers h, and these parts and the cams l 2 3 4 for opening the grippers are to be of any well-known construction, so that thesheet will be taken by the grippers c, conveyed down beneath the impression-cylinder, receive its impression, and then be taken by the grippers h and conveyed around to the point of delivery, the parts in a stop-motion (No model.)

press remaining quiescent in the position shown in Fig. l, with the advancing end of the sheet in position near the deliveryiiy ready to be taken away thereby as soon as the impression-cylinder again commences to move.

It is to be understood that the ily-frame conveys the sheet to the delivery-table during the movement of the impression-cylinder, and returns to position ready to take the next sheet during the time the impression-cylinder stands still. If, however, my improved fly-frame and grippers are used with a two-revolution impression-cylinder, as illustrated in Fig. 4L, the sheet is taken away by the ily and grippers after having been printed and during the second revolution of the impression-cylinder, and said fly-frame and grippers are brought back during the first revolution while the printing l is being performed, so as to be in place for taking the advancing end of the printed sheets.

I will now describe the construction and operation of my improved ily-frame and grippers.

rlhe rock-shaft I is supported in journalboxes upon the frame of the machine. It has keyed upon it two arms, K, one near the inside of each frame, so as to provide between such arms a greater distance than the widthv of the printed sheet. One or both arms K of the ily-frames is continued downwardly as a gear-segment, L, gearing into teeth upon the lever M upon the stud or rock-shaft I. Gearsegments may be provided at each side of the fly-frame, but usually the same will not be required, or the gear-segment L may be placed at the end of the rock-shaft, as seen in Fig. 6.

Upon the driving-shaft E there are two cams, N N and upon the bent lever M there are two rollers,O O,at opposite arms of such lever M. One of these rollers,0, is in line with and adjacent to the cam N, and the other roller, O', is in line with and adjacent to the cam N', and these cams N N are shaped so that the cam N gives to the bent lever M and segmental gears the proper movement to swing the flyframe K and its grippers at the proper time to take the sheet from the impression or transfer cylinder and'deliver the same upon the table P, and the cam N,acting upon the roller O', gives to the ily-frame the proper return roo fly-frame swings down it rests upon the flyi movement. v

that both rollers will always be in contact with These cams must be so shaped their respective surfaces, in order that there .may be no looseness or concussion, and to adjust the parts to bring the iiy-grippers to their proper places and to compensate wear one or both of the rollers O O are adjustable;

I have shown the roller O as supported by a plate, P', in slides upon the lever M with clamping-screws 2, and an adjusting-screw, 3, so as to set the roller in its proper place and hold it firmly; but any suitable adj ustable carrier may be introduced between the roller and the lever or frame.

In order to lessen concussion and to overcome the inertia of the iiy-frame K, I make use of the fly-buffers R R', which are hinged to the frame either separately or at one place, as at 5,and provided with hinged rod 6, passing freely through eyes 7 on the frame, and provided with springs 8 and collars 9, by which the springs can be made to exert more or less force upon the buffers. As the fly-frame K swings up it comesinto contact with the buffer It and compresses its spring, and as the bufferv R, and by these means the -inertia is cou nteracted,and the movement rendered easy and reliable.

It is generally preferable to provide a roller upon the ily-frame, as shown at 18, to come intoconytact with the iiy-buffers, instead of the fly-frame itself resting against such buffers. The grippers for the fly' are at the outer ends of the frame. There is across-shaft, s, with its journals `in said frame 7c, and projecting from such shaft s are gripper-fingers s', and upon the said shaft s are fastened the arms t,

` that carry the rock-shaft u, having the second set of gripper-fingers, u', extending out from lsuch shaft u', and the spring 'u tends to keep these grippers closed.

At the end of the gripper-shaft s there is an arm', w, to the outer end of which is a link or connecting-rod, z, pivoted at 10 to a stationary stud on the frame. It will now be under'- stood that as the ily-frame is'swung, as aforesaid, in delivering the sheet, the link .e and arm w cause the shaft s to make about a quarter of a rotation; hence the grippers assume the proper positions for receiving the sheet at one extreme of the movement and for delivering the sheet at the other extreme of the movement. To open the grippers as the sheet is delivered, I provide an arm, 20, upon the rockshaftu and a nger,13, upon theframe, against which the arm 1271s pressed as the sheet is laid upon the table. As the {1y-frame rises after the sheet has been delivered the grippers would be again closed by their spring; but the projecting end. 14 swings into the path of the latch 15, and such end 14 is thereby retained,

` and the further movement of the fly-frame and the turning of the shafts, as above explained, raisesthe gripper-fingers a off from the gripper-fingers s, the latter being held by the projection 14 and latch 15, so that when the flyframe .reaches the position for receiving the sheet the grippers are open. The latch 15 is moved to allow the grippers to close and grasp the sheet," either by the end of the latch coming against a Xed stop, 18, Fig. 1, or bya projection, 18, upon the transfer-cylinder acting upon the tail of the latch 15. I prefer to place the latch 15 upon a continuation of the arm t, as seen in Figs. 2, 3, and 4, instead of upon the fly-frame K, as seen in Fig. 1, in order that the latch may hold the grippers open during the return motion, such-latch swinging with the grippers as theyl are turned by the positive motion given by the connecting-rod z.- 'Ihe latch will be unlatched, as before described, to allow the grippers toclose and take" the latch 15 is preferably upon the impressioncylinder, as shown.

If desired, an air-pipe with jet-openings Y may be placed parallel to the flygripper shaft,

so as to direct a continuous or intermittent current of air into the path of the sheet to aid the same in assuming the proper position as it hangs down and is'laid uponl the deliverytable.

Air-cushions or springs may take the place of the helical springs 8 to the buffers R R.

Cams similar to the cams N N have before been used in printing-presses to give inotion to the impression-cylinder., or to other parts that require different rates of speed at different periods of their movements. These cams have operated against rollers upon lever-arms or a frame, the rollers being at opposite sides of the cam-shaft, or upon levers standing at an angle to each other.

Difficulty has arisen in preventing looseness and concussion. The wear of the surfaces of the parts produces this looseness, and frequently new cams or rollers have to be made to prevent the looseness or concussion. I

avoid all these difficulties by introducing an adjustable carrier for one of the rollers by which the sameV maybe set up from time to time to prevent looseness.

I claim as my invention- 1. The combination, with the impression and delivery cylinders, of a ily frame and grippers, a delivery-table for the sheet and rack-segments, and lever and cams for actuating the fly-frame, substantially as set forth.

2. The fly-frame composed of the arms K upon the shaft I and gripper-shaft and. grippers, in combination with the buffers R R and their springs, substantially as and. for the purposesset forth. l j

3. The combination, with the cams N and N and one shaft, E, to which they are attached,

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of the shaft I and bent lever M, the arms of which are at opposite sides of the respective cams, the rollers O andv O upon such lever, and an adjustable carrier for one of such rollers, whereby the respect-ive cams move the levers in opposite directions and each roller is kept in contact With its cam, substantially as set forth.

4. rThe fly-frame having grippers at its outer end and the rock-shaft I upon which the frame is swung, in combination with the segmental gears, the lever M, rollers O O', and cams N N', for actuating such ily-frame, substantially as set forth.

5. The combination, with the y-frame K, of a cross-shaft, s, the arm w, and connectingrod z, to rock the same, the grippers s', earried by such shaft, arms t upon the crossshafts, a rock-shaft, u, With grippers u', said shaft u being supported and Working in said arms t, a latch, 15, upon the arms t, to hold WALTER SCOTT.

Witnessesr GEO. T. PINCKNEY, WILLIAM G. Morr.

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