US884900A - Web-feeding device for printing-presses. - Google Patents

Description

No. 884,900. PATPNTED APR. 14, 1908.

` P. P, 00X. Y

WBB PEPDING DEVISE PoR PRINTING PRESSES.

APPLICATION FILED 00T.10, 1907.

2 SHEETS-SHEET l.

PATENIED APR. 14, 1908.

P. E. 00X. WEB EEEDING DEVICE EOE PRINTING PRESSES.

APPLICATION FILED 00T.10. 1907.

2 SHEETS-SHEET 2.

,UNTTED sTATEs PATENT oEEIoE.

PAUL FLEMMING COX, OF JACKSON, MICHIGAN, ASSIGNOR TO THE JACKSON PRINTING PRESS COMPANY, OF JACKSON, MICHIGAN, A CORPORATION OF MICHIGAN.

WEB-FEEDING DEVICE FOR PRINTING-PRESSES.

To all 'whom t may concern:

Be it known that I, PAUL FLEMMING COX, of Jackson, in the county of Jackson and State of Michigan, have invented certain new and useful Improvements in VVeb-Feeding vDevices for Printing-Presses; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specification.

This invention is an improvement in web feeding devices for printing presses, and it is designed to feed a web continuously but with irregular motion to a movable bed press.

The invention in particular is designed for use in connection with web printing presses of the type shown in my Patent No. 847,912, of March 19, 1907, and I have herein shown the web feeding devices in connection with such a press in the drawings, but I do not consider the invention restricted to use in a press of this kind as it may be utilized in various web feeding machines however, and particularly where it is desired to feed a web during printing thereof at a speed varying with and in conformity to the movement of the type bed during the printing operation.

In the accompanying drawings I have illustrated several mechanisms embodying the invention and illustrating its nature and purpose, and I will now describe the same more particularly with reference thereto, and refer to the claims for summaries of parts andv combination of parts for which protection is desired.

In the drawing-Figure 1 is a diagrammatic sectional elevation of a web printing press of the type described in my aforesaid patent and with my improved web feeding devices applied thereto. Fig. 2 is an enlarged detail view of the web feeding and delivering devices shown in Fig. 1. Fig. 3 is a detail view showing a modiiication of the web feeding devices 5 and Fig. 4 isa detail view showing another modification of such devices.

As shown in Fig. 1, the press has two opposite type beds B B, which may be reciprocated simultaneously in opposite directions by means of pitman E, connected to hangers l) on the beds and to crank gears G, hung on shafts g extending transversely through the press, said gears intermeshing so that they will be driven in opposite directions and Specification of Letters Patent.

Application filed. October 10, 1907.

Patented April 14, 1908.

Serial N0. 396,842.

consequently the beds be reciprocated in opposite directions. The gears may be driven by a pinion h, mounted on a transverse driving shaft H, and meshing with oneof the gears G, as shown. Above each type bed are two cylinders I, I', said cylinders may be mounted in eccentric boxes X, which are connected to longitudinal bars WV, pivotally connected at one end to a lever V, which is connected by a rod U, to a lever T, pivoted at one end on a frame and carrying a roller t, engaging a race cam S, on one of the gears G, or attached to the shaft thereof, as shown, so that at the proper time the cylinders may be thrown on or off impression.

The course of the web is as follows: The web is led in from a roll J, at one end of the machine to and around a feed roll N', thence passes over a guide o, to and between the left-hand bed B and its cylinder I, up over guides 0, 02, between the left-hand cylinder I and bed B; thence back over guides o3, o, down between right-hand cylinder I and its bed B, up over guides o5, o, down between right-hand cylinder I and bed B, then up over guides o7, to delivery roll P The feed and delivery rolls N, P', are irregular in outline and appear eccentric to their shafts or axes of rotation, but are caused to turn once for each reciprocation of the bed by means of a gear Y3 on the shaft of roll N meshing with a gear G3 of similar size on the shaft g, of one of the adjacent gears G. Any other suitable gearing may be employed to rotate the irregular feed roll in the proper time and relation to the movements of the beds.

As shown in Fig. 1, the delivery roll P is of shape corresponding to that of the in-feed roll N. In the press shown the rolls N, P, are designed to make one revolution for each sheet printed. The peripheries of these rolls have such an outline as to im art a movement to the web practically exact y uniform with the speed of the type beds B, during the actual printing operations, that iswhen the cylinders I, I', are actually on impression, during the printing strokes of the beds. that while the beds are out of impression they will feed forward the desired amount of web into position to be printed at the next operation of the press.

It is obvious that during the printing The rolls N, P, are also so shaped operation the web must be fed forward through the press in exact uniformity with the speed of movement of the beds and therefore a part of the periphery of each roll N, P, must be accurately shaped to so feed the web during the printing operations, and the remainder of the periphery of such roll is also so shaped as to feed the amount of web that it, is desired to shift between the beds and cylinders after impression. The peripheries of the rolls are shaped as desired according to the length of web to be fed`-any sudden jerk or stoppage of the web at the beginning or end of the printing operation being prevented by merging the printing and nonprinting feed portions of the rolls in a proper manner.

In the press shown the cylinders I, I, print only on the outward strokes of the beds, and while the web is moving onward from the feed to the delivery. And as described in my patent, the cylinders I, I, in each pair, print different portions of the web,

vthat is, the cylinders I, print alternate spaces on the web, and the cylinders I print the portions of the web skipped by the cylinders I. This enables me to shorten the strokes of the beds and to print saythirty-five inches of paper by a seventeen and one-half inch movement of the bed during printing,-as described in my said patent. Thus seventeen and one-half inches of web (less the margins) must be fed between the bed and cylinders during the actual printing operations, and seventeen and one-half inches of web (plus the margins) be fed between the beds and cylinders while the impression is thrown off. I thus practically feed as much web during impression as`is fed after'impression, and the web is always moving forward in the same direction.

By means of the irregular web feeding and delivering cylinders N", P, properly constructed, the web will be fed forward between the beds and cylinders during impressions at the speed desired and in exact accordance with the irregular crank movement of the bed and after impressions the remaining length of web will be fed forward. at substantially uniform speed, if desired. Thus the web is continuously fed through the press and the feed and delivery rolls themselves compensate the web for the crank motion of the bed and I am able to dispense with anyauxiliary or compensating looping rollers for the web.

The roll'P, may be driven from the roll N by a suitable train of gears p, as shown in the drawings, so that the feed and deliverywill be in eXact unison.

I preferably employ tapes Q and It, in connection with rolls i P, the tapes Q passing The roller N2 may be located above and be a substantial duplicate of the roll N and geared seance to rotate therewith and set, so that the pe ripheries of the roll N and roller N2 will remain substantially equi distant at their point of closest approximation, and hence the roller N2 will keep the tapes Q at sub stantially uniform tension and compensate them for the irregularity of roll vN.

As a further means of maintaining uniform tension on the tapes, the roller Q can be oted at u on the main frame, and rods a are connected to arms U and extend through lugs U2 on the frame and have a washer and nuts U3 on their upper ends, a spring UA1 be- 'U`, so as to normally draw the roller q away from roll N and thus keep the tapes Q under the irregularity of the roll N. The tapes li, co-acting with roll P, may be guided over rollers i", rj and the roll p2 may be constructed like roll P if desired and serve the same purpose relative to the tapes It, that roller N 2 serves Afor tapes Q; and if desired roller r might be made adjustable for the same purpose as roller q.

As shown in Fig. 3, the irregular roll \l2 can be dispensed with and an ordinary tape guide roller (13, used in place thereof, feed roll N remaining the same. In this case roller q is depended upon to take up the slack in the tapes occasioned by irregularity of roll N. Instead of using a spring to eontrol roller q, it may be mounted in sliding cam on the end of roll N, or secured 1o its shaft, and by which the roller q will be moved in or out exactly as required to main tain the proper tension of the tapes against the irregular surface of roll N, during rotation thereof. A similar arrangement can be used in connection with the delivery roll P.

As shown in Fig. 4, instead of using an irregular delivery roll P, a cylindric delivery roll PX may be used, co-acting with delivery tapes R, and this roll PX is driven by a train of gears p from the roll N, but operates with uniform speed. In order to compensate such delivery roll for the irregular movement of the web through the press, I provide amovable compensating looper IN, and after the web leaves guide roller o7 it is carried up over rollers 08, then down under looping roller W, and up to delivery roll PX` The erated by cams VV, which may be fast to the shaft of roll N2, and are so proportioned as to raise and lower roll W at proper times so as to give up its loop of web as demanded by the inders are on impression; and after impressions it will descend sufficiently to take up i any oversupply of web fed in faster than the delivery roll requires. The delivery roll PX may be peripherally speeded so as to deliver ing interposed between the washer' and lug uniform tension and compensate same for bars which have ins 2 envae'inw a race roller WV is mounted on bars w, which are op- A,

continuously ruiming roll PX, while the c vlmounted in swinging arms U, which are piv- A the web continuously at a uniform speed both during and after impression. And the roller W is simply used to take care of the slightly irregular feed of the web required by the movement of the bed.

rIlhe rolls N', P, N2, P2, might be described as epicycloidal rolls, as they are approximately oval in cross section, but as they are not absolutely true epicycloids, I prefer to term them in the description and claims irregular-meaning thereby that the said rolls are not truly cylindric or concentric to their axes of rotation, the rolls as a whole being eccentric to their axes of rotation.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a printing press, the combination of a printing couple operating at variable speed during the printing, web guiding means, and an irregular feed roll adapted to feed a web at varying speed during its rotation; with a web delivery mechanism adapted to deliver the web fed by the feed roll, and to maintain the tension of the intermediate portion of the web.

2. In a printing press, an impression couple operating at variable speed during the printing, web guides, a web feed roll of irregular outline adapted to feed. the web forward at variable speed during its rotation as required by the impression couple, a delivery roll adapted to deliver the web, and gearing between the feed and delivery rolls.

3. In a printing press, the combination of printing mechanism operating at variable speed during the printing, web guides and a web feed roll of irregular outline adapted to` feed the web forward at variable speed during its rotation as required by the printing mechanism; with means for rotating the feed roll, a delivery roll adapted to deliver the web fed in by the feed roll, and gearing between the feed and delivery rolls.

4. In a printing press, the combination of a printing couple and web guides, a feed roll having an irregular outline, tapes co-acting with said roll, means for automatically maintaining the tension of said tapes, and means for rotating the roll, said feed roll being eccentric to its axis of-rotation whereby the web is fed forward at irregular s eeddurino the rotation of the roll; with a c elivery roll adapted to deliver the web as fast as fed in by the' feed roll, and gearing between the feed and delivery rolls.

5. In a printing press, the combination of a reciprocating type bed, a cylinder, and means for directing a web between the bed and cylinder, and an irregular feed roll adapted to feed the web forward during impression at a speed conformable to the movement of the bed.

6. In a printing press, the combination of a reciprocating type bed, a cylinder, and

means for directing a web between the bed and cylinder, and an irregular feed roll hav-.

ing an irregular outline and adapted to feed the web forward during impression at variable speed conformable to the movement of and cylinder, and an irregular feed roll adapted to feed the web forward during impressions at a speed conformable to the movement of the bed, and to feed a like portion of the web forward during the return stroke of the bed and while the impression is thrown off.

8. In a printing press, the combination of a reciprocating type bed, a cylinder, and means for directing a web between the bed and cylinder, and an irregular feed roll having an irregular outline and adapted to feed the web forward during impression at variable speed conformable to the-movement of the bed, and to feed a like portion of the web forward during the return stroke of the bed and while the impression is thrown ofl".

9. In a printing press, the combination of a reciprocating bed, a cylinder co-acting therewith, and guides for directing a web between the bed and cylinder; a web feed roll having an irregular outline, and means for continuously rotating this roll whereby the web is fed forward during impressions at the speed of travel of the bed and also fed forward after impressions.

.10. In a printing press, the combination of a reciprocating bed, a cylinder co-acting therewith, guides for directing a web between the bed and cylinder, a feeding mechanism comprising a web feed roll mounted eccentric to its axis of rotation, means for rotating this roll whereby the web is fed forward during impressions at the speed of travel of the bed and also fed after impression at a uniform speed; with a delivery mechanism adapted to draw the web through the press at a speed uniform with its feed.

11. In a printing press, the combination of a reciprocating bed, a cylinder co-acting I therewith, means for directing a web between the bed and cylinder, a web feeding roll mounted eccentric to its axis,`tapes co-acting with said roll and means for maintaining the tension of said tapes whereby the web is fed to the press during impression at a speed uniform with the movement of the bed.

12. In a printing press, the combination of a reciprocating bed, a cylinder co-acting therewith, means for directing a web between the bed and cylinder, a web feeding roll mounted eccentric to its axis, tapes co-acting with said roll whereby the web is fed to the press during impression at a speed uniform with the movement of the bed g and a web delivery mechanism comprising a roll and tapes co-acting therewith adapted to draw the web through the press at a speed coincident with its feed thereto.

13. ln a printing press, the combination of a reciprocating bed, a cylinder co-acting therewith, means for directing a web between the bed and cylinder, a web feeding roll mounted eccentric to its axis, tapes co-acting with said roll and means for maintaining the tension of said tapes whereby the web is fed to the press during impression at a speed uniform with the movement of the bed, and a web delivery mechanism comprising a roll of irregular outline and tapes co-acting therewith adapted to draw the web through the press at a speed coincident with its feed thereto, and gearing between the feed and delivery mechanisms.

14. In a printing press, the combination of a reciprocating bed, a pair of cylinders coacting therewith, means for directing a web successively between the cylinders and the bed, and a feed roll mounted eccentric to its axis of rotation adapted to feed the web between the bed and cylinders during impression at a speed uniform with that of the bed movement.

15. In a printing press, the combination of a reciprocating bed, a pair of cylinders coacting therewith, means for directing a web successively between the cylinders and the bed, and a feed roll of irregular outline adapted to feed the web between the bed and cylind ers during impression at a speed uniform with that of the bed movement and to feed a like length of web between the bed and cylinders after impression.

16. In a printing press, the combination of a reciprocating bed, a pair of cylinders coacting therewith, means for directing a web successively between the cylinders and the bed, and a feed roll mounted eccentric to its axis of rotation adapted to feed the web between the bed and cylinders during impression at a speed uniform with that of the bed movement; with a web delivery roll of irregular outline adapted to draw the web through the press at a speed coincident with its feed.

17. 1n a printing press, the combination of a reciprocating bed, a pair of cylinders coacting therewith, means for directing a web successively between the cylinders and the bed, and a feed roll of irregular outline adapted to feed the web between the bed and cylinders during impression at a speed uniform with that of the bed movement and to feed a like length of web between the bed and cylinders after impression; with a web delivery roll of irregular outline adapted to draw the web through the press at a speed coincident with its feed.

18. In a web perfecting printing press, the

combination of reciprocating type beds and co-acting cylinders, guides for directing a web between the cylinders and beds, a feed roll of irregular outline adapted to feed the web through the press at a speed uniform with the movement of the beds during impression, and a delivery mechanism adapted to draw the web through the press at a speed coincident with its feed.

19. In a web perfecting printing press, the combination of reciprocating type beds, a pair of cylinders co-acting with each of said beds, guides for directing a web successiwly between the cylinders and beds, a feed roll of irregular outline adapted to feed the web through the press at a speed uniform with the movement of the bed during impression and to feed a similar length of web to the press after impression, and a delivery meehanism adapted to draw the web through the press at a speed coincident with its feed.

20. In a web printing press, the combina.- tion of a pair of reciprocating beds and coaeting cylinders, a web feeding roll of irregular outline, tapes co-acting with said roll, means for rotating said roll at uniform speed whereby a length of web is fed to the press during impression at a speed uniform with. the movement of the beds and a like length of web is fed to the press while the impression is thrown ofl', a web delivery mechanism adapted to draw the web through the press at a speed coincident with its feed, and guides for directing the web from the feed roll suecessively between the cylinders and beds and thence to the delivery.

21. In a web printing press, the combination of a pair of opposite/ly reciproeatingl beds, a pair of cylinders co-acting with eaeh bed, a web feeding mechanism comprising a roll of irregular outline, tapes c i acting with said roll, means for tensioning the tapes, and means for rotating said roll at uniform speed whereby a length of web is fed to the press during impression at a speed uniform with the movement of the beds and a like length of web is fed to the press while the impression is thrown off 5 with a web delivery mechanism adapted to draw the web through the press at a speed coincident with its feed, and guides for directing the web from the feed roll and between one pair of cylinders and bed and then to and between the next pair of cylinders and bed, and thence to the delivery mechanism.

In testimony that l claim the foregoing as my own, l affix my signature in presence of two witnesses.

PAUL FLEMMI NG COX.

Witnesses:

JAMES R. MANsFmLn, GEO. M. BOND.

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