US398544A

US398544A - Sheet-delivery apparatus for printing-machines

Info

Publication number: US398544A
Authority: US
Publication date: 1889-02-26
Anticipated expiration: 1906-02-26

Description

2 Sheets-Sheet 1.

(No Model.)

W. SCOTT.

SHEET DELIVERY APPARATUS FOR PRINTING MAGHINES.

No. 398,544. Patented Feb. 26, 1889.

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(No Model.) 2 Sheets-Sheet 2.

W. SCOTT.

SHEET DELIVERY APPARATUS FOR PRINTING MACHINES.

No. 398,544. Patented Feb. 26, 1889..

Nv PETER$ Pnowmm n ner, Wnhingion. n. 0

UNITED STATES PATENT OFFICE,

WAT/FER SCOTT, OF PLAINFIlCl/I'), NE\\' JERSEY.

SHEET-DELIVERY APPARATUS FOR PRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 398,544, dated February 26, 1889.

Application filed August 25, 1886, Serial No. 211,788, (No model.)

To a]! IL-71,0712 it may concern.-

.Be it known that I, 'ALTER SCOTT, ol'

ment in Sheet-Delivery Apl iaratus for Irinting-Mach ines, of which the Following isaspecilication.

In sheet-deliver apparatus in which the web, after it has been printed in a press, is perforated the ends of the paper are rough and uneven, and in. pulling one sheet away from the next there is risk of the sheet becoming slightly mislflnccd.

The object of the present invention is to deliver the sheet with reliability after the same has been entirely separated from the web, and also to impose one sheet upon the other, so that the edges 01. the sheets will coincid e, thereby adaptin the delivery apparatus to book and job work as well. as to newspapers.

In the drawings, Figure 'l is a vertical scction of my improvement at and near theline ,r of Fig. 2, and Fig. :3 is a plan view with the upper or nntil-cutting: cylinder and some of the pulleys and belts removed.

The web of paper that is to be cut up into sheets passes at 2 in between the cylinders 3 and at. The upper cylinder, 3, is provided with the cutting-blade 5. This blade is prefcrabl; rccei ved into a longitudinal groove be tween two supports usually slats of hard wood the surfaces of which coincide with the surface of the cylinder, and this knife should have a sharp finely-serrated edge. In the lower cylinder, 4, is a similar longitudinal groove receiving the slats of hard wood, U, having a channel for the reception of the edge of the cutter 5, and these parts are made so that the web will be entirely separated by the action of the cutter.

The sheets pass away as hereinafter described; but it is necessary that the advancin end of the sheet should follow downwardly upon the surface oi the c *linder 4-, instead of adheringto the knife 5 and passing;- up on the surface of the cylinder 2:3. To effect this object, I use small impaling-pins 7 closobchind the opening in slats G in the female cuttingcylinder t, so that these pins 7 will hold the advancing end of the sheet sufficiently to carry it downwardly.

There are bridge-bars S extendingfrom the cross-bearer .J to the surface of the cylinder J, and these bridge-bars are preferably at an inclination so that the sheet will run down the same from the cylinder 4. The ends of the bridge-bars, it they restedonly upon the surface of the cylinder 4, might not pass in between the cylinder and the sheet. To prevent this difficulty I turn in the surface of the cylinder 4: several narrow grooves, 10, and I make the bridge-lmrs preferably of L-shaped sheet metal, so that the vertical portion of the sheet metal of the bridge-bar passes into the groove, the end of the bridge-barbeing shaped to conform to the bottom of the groove, and the pins 7 should be adjacent to these grooves, so that the ends of the bridge-bars within the grooves act to lift the end of the sheet directly off the pins, so that the sheet may pass down the bridge-bars and in be- E tween the belts next described.

The ranges of belts or tapes l2 and 13 are of any suitable material, and at proper dis tances apart. They pass around the sectional rollers 1i and 15, an d are led over the sectional guide-cylinder lo, the belts 13 passing around the roller 17, over the roller 18, and around the

rollers

19 and 20, back to the roller 15, the rollers l9, l9, and Q0 illustrating portions of an ordinary folding mechanism or other suitable shect-delivery apparatus. The belts .12, after passing around the guide-cylinder, pass down and beneath the imposing-cylinder 2?, up against the roller l 7, over the roller 1.8, and around the rollers 23'}, 24-, and 25, back to the roller 14-.

The rollers and 25 are represented as adapted to tightening the belts, and it to be understood that the arrangement of the rollers l8 19 20 23 2t 251nay be varied according to the folding or delivingmechanism with which the present improvements are emploved.

The guides are sup mrted by the bearer 3 The under surfaces of such guides are curved to correspond to but are at a slightdistziince from the surl'acc of the in'iposingcylinder 22, and the sides of such guides correspond to and are at a slight distance from the sectional guide-cylhrder 16, and it will now be apparent that the advancing end of the web of paper is directed by the bridgebars 8 in between the ranges of

tapes

12 and 13; but the sectional rollers 1-1 and 15 must be sufliciently far apart not to nip the sheet, because the tapes or

belts

12 and 13 will usually travel at a faster speed than that of the web of paper. hen the advancing end of the sheet reaches the sectional guide-cylinder 16, it will be nipped between the belts and move at the same speed as such belts, and the curved guides direct the sheet and cause it to pass down and around the guidecylinder 16 along with the belts 12, andthen such sheet will pass in between the belts 12 and the imposing-cylinder 22, and be carried by and with such belts 12 until they leave the imposing-cylirider 22 and pass up against the rollers 17.

If now one or more sheets are to be imposed upon the cylinder 22, the advancing end or ends of such sheet are to be passed in beneath the curved guide 30, and the parts are so timed that the second sheet passing around the guide-cylinder 16 comes up to and the end coincides with the advancing end of the first sheet as the two sheets pass between the guide-cylinder 16 and the imposing-cylinder 22. In this manner two or more sheets can be imposed with accuracy, so that their edges coincide. Vhen the sheet or sheets are to be passed off the imposing-cylinder 22 to the roller 17, I find in practice that usually the spring of the paper, the action of the atmosphere, or the electric condition is sufficient to cause the advancing end of the sheet or sheets to follow and lie against the tapes 12; but to prevent the advancing end adhering to the cylinder 22, I provide the discharge-fingers upon the shaft 41, having a spring, 42, that acts to close the fingers toward the cylinder, and an arm, 43, that is acted upon by a cam, 11, to cause the fingers to force the sheet from the cylinder 22 against the belts 12. This cam 4% is on an arm, 45, pivot-ed at 46, and acted upon by an eccentric, 47, and rod 48, the eccentric being upon a shaft, 49, that is revolved once to every two revolutions of the cutting-cylinder 3, so that the cam 44 is brought into action every two sheets that are imposed upon the cylinder 22. If three or more sheets are to be gathered upon the cylinder 22, the shaft 49 will be revolved once in every three or more revolutions of the cylinder 3.

The curved shields 50 are upon the shaft 51, and they are drawn back by the spri n g 52, and retained in a normal position outside of and rod 53, and these shields are placed so as i to )ass in between the belts 12 and the concave surfaces of such shields coincide withv but are at a slight distance from the cylinder 22. The parts are so timed that the curved shields 50 are brought up toward the imposing-cylinder 22 at the proper time to guide the advancing end of the first sheet around upon the surface of the imposing-cylinder 22, and cause it to pass in beneath the curved guides 30 to meet the second sheet as it passes over the cylinder 16 and between the same and the imposing-cylinder 22, and when the sheets are to be delivered by the fingers 40 the shields 50 are drawn back out of the way by the spring 52.

The rod 53 should be hook-ended, so that it may be disconnected from the arm or from the shaft 51, in which case the sheets will pass around the imposing-cylinder 22, and each sheet will be delivered separately.

I remark that the ends of the curved guides 30 next to the shields 50 should be rounding, to insure the passage of the sheets beneath them, and the upper ends of the shields 50 should lap past the lower ends of these guides 80.

I claim as my invention 1. The combination, with the imposing-cylinder 22 and the rollers 16 and 17, and tapes for bringing the sheets to such imposing-cylinder, of the guides 30,with curved faces adjacent to the cylinder 22 and roller 16, and the curved shelds 50, cross-shaft 51 for supporting such shields outside the path of the tapes, and mechanism for moving the shields intermittently toward and from the imposing-cylinder, whereby alternate sheets are caused to pass beneath the guides 30, and the pairs of imposed sheets are delivered on the belts 12, substantially as set forth.

2. The combination, with the imposing-cylinder 22 and the rollers 16 and 17, and tapes for bringing the-sheets to suchimposing-cylinder, of the guides 30,with curved faces adjacent to the cylinder '22 and roller 16, and the curved shields 50, and cross-shaft 51 for supporting the same outside the path of the tapes 12 and the delivery-fingers 40, and mechanism, sub stantially as specified, for moving the delivery-fingers and segmental shields alternately for the latter to direct one sheet in beneath the segmental guides 30 and then for the delivery-fingers to cause the two sheets to follow the belts 12 to therollers 17, substantially as specified.

Signed by me this 20th day of August, A. l). 1986.

WALTER SCOTT.

\Vil nesses:

\VILLIAM G. More \VALLACE L. SERRELL.