US371721A - Sheet-delivery fo r prj nt - Google Patents

Description

(No Model.) I 3 Sheets-Sheet J. WALTI-IER.

SHEET DELIVERY FOR PRINTING MACHINES. v No. 371,721. Patented Oct. 18, 1887..

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J. WALTHER. SHEET DELIVERY FOR PRINTING MACHINES. No. 371,721 Patented Oct 18,1887.

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v SHEET DELIVERY FOR PRINTING MACHINES. No. 371,721. I Patented Oct. 18, 1887.

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NlTED Snares PATENT Orrrcn.

JOHN WVALTHEB, OF BROOKLYN, NEXV YORK.

SPECIFICATION forming part.

of Letters Patent No. 371,721, dated October 18, 1887.

- Application filed August 14, 1886. Serial No. 210,852. (No model To aZZ whom it may concern.-

Be it known that 1, JOHN WALTHER, of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Sheet-Deliveries for Printing-Machines,of which the following is a speci-' fication.

This invention relates to an improved sheetdelivery for cylinder printing-presses, whereby the tly heretofore commonly employed is dispensed with and the sheets delivered in aregular and uniform manner to the delivery-table.

The invention consists of a sheet-delivery attachmentto printing-presses, which consists of an intermittently rotating reel which takes the sheet from the impressioncylindcr by a set of grippers and delivers it to a platform or table,in connection with suitable actuating and locking mechanisms, which will be fully described hereinafter, and finally pointed out in the claims.

In the accompanying drawings, Figure 1 represents a side elevation of the impressioncylinder of a printing-press with my improved sheet-delivery attachment. Fig. 2 is a vertical longitudinal section of the same. Fig. 3 is a detail section of the impression cylinder and the delivery-reel, showing the latter in the act of taking up a printed sheet. Fig. 4: is a side view of the impressioncylinder and the mechanism for operating its grippers. Fig. 5 is an elevation taken from the opposite side of the machine, showing the mechanism for intermittently locking the delivery-reel. Fig. 6 is a sectional elevation showing the gripper-actuating mechanism of the cylinder and reel. Fig. 7 is a plan of the impression-cylinder and delivery-reel,sh owing the feedboard partly broken away; and Fig. Sis a vertical section of the inipression-cylimler and deliveryreel, showing the latter with the sheet gripped and ready to be delivered on the table.v

Similar letters of reference indicate corresponding parts.

Referring to the drawings, Arepresents the impression-cylinder of a printing-press with my improved sheet-delivery attachment, and B is the delivery-reel, which is composed of a number of disks, 0, that are attached by setscrews to a shaft back of the impression-cylinder and located below the feed-board G of the press. The impression-cylinder A is pro vided with the usual grippers, g g, which are operated in the well-known manner by a gripper bar gfland fixed pins /5, as shown. in Fig.6. The grippers g g serve to take up the sheets from the feed board O and conduct the same to the form. The delivery-reel B is also provided with grippers d, which are actuated by a stationary cam, cl, that engages an anti-v friction roller, d", of the gripper-arm 62 and by a spiral spring, (1*, in the usual manner, as shown in Figs. 2 and 6. W'hen the sheet has been printed, it is taken up by the grippers of the delivery-reel in the usual manner and carried along with the reel, and finally delivered to the delivery table or platform D, which is arranged below the delivery-reel and back of the impressioncylinder A, as shown clearly in the diii rent figures of the drawings.

The impression-cylinderA receives continuous rotary motion by a suitable gear-wheel transmission from the driving-shaft of the printing-press. Ontheshaftoftheimpressioncylinder Ais keyed a disk, F, which is provided at its inner side with a ea1n-groove,f, that engages an anti friction roller,f, of a lever, f which lever is slotted, so as to clear the shaft of theimpressioncylinder, itsopposite end being pivoted to an oscillating lcvemf, that is also pivoted at its longer end to the supportingframe of the printing press. The upper forked end of the oscillating leverf serves to engage a crank-pin, f, of the geanwheel f, which is keyed to the shaft of the deliveryrcel and which serves to impart motion to the same. \Vhen the era11k-pin f is engaged by the forked end of the oscillating lever-f a pivoted and spring-actuated locking-lever, F, engages, by a friction-roller, G, at its outer end, a notch, G, of a disk, G which latter is keyed to the opposite end of the shaft of the delivery-reel B, so as to lock the delivery-reel in position ready for taking up the next sheet conducted to it by the rotation of the impression-cylinder. To accomplish this purpose a portion of the circumference of the motiontransmitting gear-wheel f of the delivery-reel B is mutilated-that is to say, the teeth at a portion of its circumference are cut away, as shown in Fig. 1, so that it is retained in a position of rest by the locking-lever F, while the printing-cylinder continues its rotary motion. While the delivery-reel is thus locked the anti- ICO of the impression-cylinder, so that it continues its rotary motion. Simultaneously the locking-lever F is unlocked from the notch of the disk G As the delivery-reel is started, its gripper takes hold of the sheet carried along by the impression-cylinder, as shown in Fig. 3, and conducts it over the reel, which finally delivers it on the delivery-table. The intermittently-rotating delivery-reel and its locking mechanism,together with the mutilated gear-wheel on its shaft, impart thus the required motion by which the printed sheet is taken up from the cylinder, carried around with the delivery-reel, and delivered face upward on the delivery-table. As the disks of which the delivery-reel is composed form but narrow contacts with the printed face of the sheet, they exert but little, if any, blurring action onthe same, which is further diminished by adjusting the individual disks of the reel in such a manner that they strike the outer or intermediate margins of the printing sheets. The sheet is delivered in an easy manner on the delivery-table, owing to the rotary motion of the delivery-reel and the small resistance exerted by the air on the sheet, so that the socallcd offset of the printed sheet just delivered on the clean side ofthe next sheet is almost entirely obviated, owing to the fact that the forcible blows exerted on the sheets by the fly heretofore commonlyin use in printing-presses is dispensed with.

The essential feature of my invention is the intermittent stop that is imparted to the delivery-reel by the cam and lever motion on the shaft of the printing-cylinder and the mutilated portion of the gear-wheel on the shaft of the delivery-reel, in connection with the positive locking action produced by the lockinglever and notched disk on the shaft of the delivery-reel. I

Another advantage of the attachment is that the delivery-reel and table,both being mounted below the feed-board, take up considerably less room than the fly arrangement and delivery-table heretofore in use. Another advantage is the easyand uniform piling of the sheets which takes place, as there is but little resistance of the air to the sheet as the same is delivered by the reel onto the table, and which dispenses with the use of a special attendant or of a piling attachment.

Having thus described my invention,I claim as new and desire to secure by Letters Patent- 1. The combination, with a rotary impression-cylinder, of an intermittently-rotating delivery-reel having grippers, means for inter.- mittently locking the delivery-reel, and a delivery-table below said reel, whereby the sheet is taken up by the reel as it is delivered by the impression-cylinder and conveyed to the delivery-table, substantially as set forth. 7

2. The combination of a rotary impressioncylinder, an intermittently-rotating deliveryreel having grippers, and means for intermittently locking the delivery-reel, so as to retain 'it in position for taking up the printed sheet,

substantially as set forth.

3. The combination, with a continuouslyrotating impression-cylinder, a grooved camwheel on the shaft of said cylinder, alever operated by the cam-groove of said cam-wheel, a forked oscillating lever operated by said camlever, adelivery-reel, a mutilated gear-wheel having a crank-pin on the shaft of the deliveryreel, and a delivery-table, said printing-cylinder and delivery-reel being provided with grippers for taking up the printed sheet and placing the same on the delivery-table, substantially as set forth.

4. The combination of a continuously-rotating impression-cylinder, an intermittently-rotating delivery-reel, means, substantially as described, for intermittently rotating the delivery-reel, means, substantially as described, for locking said delivery-reel when at rest,and grippers for taking up the printed sheet and delivering the same to the table, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in pres- 100 ence of two subscribing witnesses.

JOHN WALTHER.

Witnesses:

CARL KARP, SIDNEY MANN.

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