US305797A

US305797A - Delivery apparatus for printing-machines

Info

Publication number: US305797A
Authority: US
Publication date: 1884-09-30
Anticipated expiration: 1901-09-30

Description

(No Model.)

0.13. GOTTRELL. DELIVERY APPARATUS FOR PRINTING MAGHINES.

Patented Sept. 30, 1884.

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DELIVERY APPARATLLS FOFl PRlNTlNG-iVlACi-HNES.

LEPECII-ICATION forming part of Letters Patent No. 305,797, dated September 30, 188%.

' Application filed May 3, 12:83. (X model.)

To all whom it may concern:

Be it known that I, CALVERT B. COTTRELL. a citizen of the United States, and a resident of Stoniugton, in the county of New London and State ,of Connecticut, have invented a new and useful Improvement in Delivery Apparatus for Printing-Machines, of which the following is aspecification.

My invention is applicable both to two-revolution and stop-cylinder presses; and it relatch to front sheet-delivery apparatus, by which the sheet is taken from the cylinders,

floated or kited over theinlzing apparatus,

' and provided between the chains with gripper-fingers, the said chains being capable of movement in but one direction totake the printed sheet from the cylinder and carry it over the inking apparatus and to said re-' ceivingtable; also, in combination with the aforesaid cylinder, endless chains, and grippers, of mechanism for driving the chains at a greater velocity than the cylinder, so as to float or lzitc the sheet over the inking appa ratus.

The invention also consists in the combina tion, with the cylinder of a two-revolution press capable of a rising and falling movement, and a feed-board at the back of the cylinder, of chain-wheels arranged at the front of the cylinder and supported from the bearings of the cylinder, a receiving-table at the farther end of thepress, chaiirwheels adjacent to the receiving-table, endless chains passing around said chaiirwhcels, and a gripper-bar and gripper-rod provided with gripper-fingers extendin g between and connecting said chains, said chains being capable of movement in one direction only to take the printed sheet from the cylinder over the inking apparatus and to said receiving-table.

The invention also consists in the combinati0n,\vit-h the cylinder, endless chains, a gripper-rod, and grippc's, of mechanism for imparting a rising and falling motion to the chains at their outer ends,whereby the chains, as the sheets approach and come over the re coiving-table, arelowercd, and the heads of the sheets are placed on the pile. This is advantageous, because it enables the sheetsio be carried high over the inking apparatus and still avoids dropping or releasing the sheets at any considerable distance above the receivingtable.

In the accoi'npanying drawings, Figure 1 is a side elevation of such parts of a two-revolution press as are necessary to illustrate my invention. Fig. 2 is an end elevation thereof. Figs. 3 and 4 are detail views upon a larger scale, showing the construction of the chains, the grippers, and their appurtenances. Fig. 5 is a plan of a portion of one chain and gripper-bar on the same scale as Figs. 3 and 4, and Fig. 6 is a detail view hereinafter described.

Similar letters of reference designate corresponding parts in all the figures.

A designates the main frame of the press, and B designates the cylinder, which is 1'0 tatcd in one direction only for printing.

0 designates the endless chains, of which two are employed-one at each end of the eylin der. These chains are supported at their in nor ends, atthe front and near the top of the cylinder B, by chain-wheels a, and they are supported at their outer ends upon corre sponding chain wheels, Z). I wheels, 0, are mounted on a shaft, 0, which is supported in standards (Z, as shown in Fig. 8, and the outer wheels, I), are mounted on a shaft, 0, which is capable of rising and fall ing in standards or guides g, as shown in Fig. 1. Behind and at the top of the cylinder B is the feed-board 1".

Intwo-revolution presses, in which the main cylinder B has necessarily a slight rising and falling movement, the standards d, which support the shaft 0, should be connected with the bearings of the cylinder, so as to rise and fall with the cylinder. When the endless chains 0 have but one set of deliverygrippers, 10o

hereinafter described, they should be of such length that they will make one complete cir- The inner pair of s is shown in Fig. 3.

' ing upon a stationary cam-surface,

cuit'during the two revolutions of the cylinder, if employed in a two-revolution press, or during one revolution and a stop if employed in a stop-cylinder press. In this example of my invention the shaft 0 is geared to the cylinder by means of a gear-wheel, h, which e11 gages with a pinion, "i, on the shaft 0, which The relative sizes of the wheel h and pinion i5 and the cylinder B and chain-wheels a are such that the chains will move somewhat faster than the cylinder, and will therefore carry or float the sheets over the inking apparatus, of which I have here shown an arbitrary illustration, S, Fig. 1.

In a stop-cylinder press the shaft 0 would have to be operated from a continuously-rotating shaft, instead of from the cylinder.

The chains 0 are represented in Figs. 3 and 4 as composed of links which are approximately semicircular in shape, and which engage with the wheels at I).

I will now describe the gripper mechanism shown in Figs. 3, 4, and 5.

In each chain 0 is a single gripper-block, G, which is notched 0r recessed so as to engage with the chain-wheels a b, and the gripper-blocks of the two chains are connected by a gripper-rod, j, carrying gripper-fingers or grippers 7c, and also carrying an arm, Z, at one end. The blocks are also connected by a bar, in, upon which the gripper-fingers close, and when not'otherwise acted upon the fingers are held closed on the bar 112. by the usual closing spring, 77, applied to the gripper rod j, as shown in Fig. 5. As thegrippenblocks Opass around the wheels a, as shown in Fig. 3, they are opened to take the sheet by the arm Z bear- 0, and as soon as the arm passes said cam the grippers are closed on the sheet by the action of the spring a. The sheet will then be carried outward from the cylinder, as shown at 19, Fig. 1, and as the gripper-blocks G approach the wheels I) the arm Z comes in contact with a fixed cam or projection, q, on the standard 9, and the grippers are thereby opened to release the sheet.

As before stated, the outer shaft, e,-is capable of sliding upward and downward in the standards 9, and it is journaled in bearings carried by rods D, which are connected to arms E upon a rock-shaft, F.

Upon the rockshaft F is secured a third arm, 0, to which is attached a rod, F, which is provided with a roller or bowl, 8, and is moved longitudinally by a cam, t. on a shaft, a, which may be rotated by any suitablemechanisin.

The mechanism just described serves to raise the shaft 6 and the chains, but they fall, when released,by their own weight. During the outward movement of the sheet the chains are in their highest position, as shown in full lines in Fig. 1; but as the sheet reaches the receiving-table G the chains are suddenly lowered by the action of'thc cam t and the intermediate. mechanism, and are brought almost down to the pile of sheets on the rcceiving-table. The head of the sheet is then released by the opening of the grippers, and the sheet settles squarely on the pile.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a printing press, the combination, with an impression-cylinder capable of rotation in one direction only for printing, and a feed-board at the back of the cylinder, of chain wheels arranged above and at the front of the cylinder, a receiving-table at the farther end of the press, chain-wheels adjacent to said receiving-table, endless chains passing around said chain-wheels, and a gripper-bar and gripper -rod extending between and connecting said chains, and provided between the chains with gripper-fingers, said chains being capable of movement in one direction only to take the printed sheet from the cylinder and carry it over the inking apparatus and to the receiving table, substantially as herein described.

2. The combination, with the cylinder ofa printing-press, of endless chains extending from the front of the cylinder to a receivingvtable at the farther end of the press, a gripperrod carrying delivery-grippers, and extending between and supported and carried by the chains, and mechanism, substantially such as described, for driving the chains at a greater velocity than the surface velocity of the cylinder, substantially as herein specified.

3. The combination, with the cylinder ofa two-revolution press capable of a rising and falling movement, and a feed-board at the back of the cylinder, of chain-wheels arranged at the front of the cylinder and supported from the rising and falling bearings of the cylinder, areceiving-table at the farther end of the press, chain-wheels adjacent to the receivingtable, endless chains passing around said chainwheels, and a gripper-bar and gripper-rod extending between and connecting said chains, and provided between the chains with gripperfingers, said chains being capable of movement in one direction only to take the printedsheet from the cylinder and carry it over the inking apparatus and to said receiving-table, substantially as herein described.

4. The combination, with the cylinder of a printing press, of endless chains extending from the front of the cylinder, a gripper-rod carrying delivery-grippers and extending between said chains, and mechanism, substantially such as described, for imparting a rising and falling movement to the said chains, substantially as herein specified.

CALVERT B. COTTR-ELL.

\Vitn esses:

FREDK. HAYNEs, En. L. MORAN.