US680128A

US680128A - Printing-press.

Info

Publication number: US680128A
Application number: US55891695A
Authority: US
Inventors: Joseph L Cox
Original assignee: DUPLEX PRINTING PRESS CO
Current assignee: DUPLEX PRINTING PRESS Co
Priority date: 1895-08-10
Filing date: 1895-08-10
Publication date: 1901-08-06
Anticipated expiration: 1918-08-06

Description

No. 680,I28. Patented Aug. 6, l90l.

.1. L. cox.

PRINTING PRESS.

(Application filed Aug. 10,1895.)

(No Model.)

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No. 680,128. Patented Aug. 6, I90l.

J. L. cox. v PRINTING PRESS.

, (Application filed Aug. 10, 1895.) (No Model.)

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UNITED STATES PATENT ()EEICE.

JOSEPH L. COX, OF BATTLEOREEK, MICHIGAN, ASSIGNOR TO DUPLEX PRINTING PRESS COMPANY, OF SAME PLACE.

PRINTING-PRESS.

SPECIFIGATION forming part of Letters Patent No. 680,128, dated August 6, 1901.

Application filed August 10, 1895. Serial No. 558,916. (No model.) I

To a, whom it may concern.-

Be itknown that I, JOSEPH LCOX, of Battlecreek, in the county of Calhoun and State of Michigan, have invented certain new and useful Improvements in Printing-Presses; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification;

My present invention pertains to a flat-bed type-printing web-perfecting press in which the paper is automatically fed and taken care of from a web-roll supply and the perfected impressions thereupon are made by a compound printing-press employing a pair of locomotive reciprocating impression-cylinders operating forward and backward over a pair of reciprocating type-beds which are moved or traveled in opposite directions to the travel or reciprocations of the impression-cylinders, the principal object being to shorten the travel ofheavy parts in this class of presses, and consequently to increase the product therefrom.

The present invention is difierent from my web-perfecting press of a similar character patented May 14, 1895, N0. 539,356, inasmuch as the present structure operates to print and perfect sheets upon a web and severs them after printing, while in the press shown in said patent, though employing traveling cylinders and traveling beds and operating to print and perfect from a web-roll supply, does so by first severing the sheets and then printing them.

The general construction, arrangement of parts,'and operation of the mechanisms of the present application are similar to that of the flat-bed web-perfecting press shown in my Patent No. 478,503, dated July 5, 1892, inasmuch as the beds are arranged one'above the other and a pair of reciprocating impression-cylinders are operated backward and forward over said beds, each making an impression upon the .web as they are traversed in both directions. In said patent, however,

the beds are stationary,while those shown in this application reciprocate. The'path of the web and the manner of feeding and delivering the Web and of reversing it are practically the same as in the former invention, as shown in present application; but the means and operation for equalizing and spacing the web between the point of infeed and outfeed or delivery are different and must be to meet the new conditions of feed and tension occasioned by reciprocating both the cylinders and the type-beds, although the main synchronously-acting equalizing devices operating the looping-rollers U U of present application are the same as shown in my patent of July 11, 1893,'No. 501,456, and operate in the same manner and to perform the same functions in the structure of the present application. The beds and cylinders in the present case are both traversed in opposite directions by four drivers, and the additional function of tensioning the web to meet the new requirements and conditions of feed, as required in the new combination, is performed by the vertical walking-rack rollers N and N, which are operated by small gears on the cylinder-shafts and which are onefourth the pitch diameter of the cylinders, similar to the walking-racks of my Patent No. 332,139, of DecemberS, 1885. These take up and give back the web that is fed back ward and forward by the reverse movements of the beds, and their action is compensated by the reciprocally-traveled coaxing-rollers M and M which, as shown by drawings, are traveled by the beds, being journaled in a traveling frame P, which is bolted rigidly to the beds.

I am aware of many patents in this and foreign countries showing flat-bed type-printing Web-presses variously employing web-feeds,

reciprocating beds, and reciprocating cylin-' ders, and I voluntarily disclaim 'all that is therein shown.

The invention is best defined in the claims, and the accompanying drawings illustrate what I consider the best form of apparatus now known to me embodying my invention.

Referring to said drawings, Figure 1 is a central longitudinal vertical section through such press. Fig. 2 is a side elevation thereof. Fig. 3 is a detail transverse vertical section throughthe same on line 3 3, Fig. 2.

The type-beds B B are mounted and guided between the side frames I of the press in any suitable manner, and the lower bed B is reciprocatcd by means of pitmen G connected to wrist-pins on crank gear-wheels D keyed on a shaft A at one'end of the machine. Bed B is reciprocated by pitmen G, connected to wrist-pins on crank-gears D, keyed oii a shaft A, parallel with but above shaft A The cylinders O C, respectively coacting with beds B B, are journaled in sliding carriages H H, guided on ways on the exterior of the frame. Carriage H is reciprocated by pitmen G, connected to wrist-pins on crank Wheels D, mounted on a shaft A, journaled parallel with, above, and to the inner side of shaft A. pitmen G connected to wrist-pins on crankwhcels D keyed on a shaft A below and parallel with shaft A. Gear D meshes with gear D, and gear D meshes with gears D D Consequently the beds will be reciprocated alike in one direction, while the cylinders will be reciprocat'ed alike, but in the opposite direction.

I do not consider my invention limited to any particular form of bed and cylinder moving devices or any particular arrangement thereof, only the beds and cylinders must both move in opposite directions and operate upon a web.

Systems of inking-rollers Z m n 0 are mounted in the carriages H H at each side of the cylinders O O, as shown, and receive ink from fountains 7:, as will be readily comprehended from the drawings.

L L are Web-infeed rolls, which may be driven by gears Q R S from gear D or shaft A as desired.

L is a web-delivery roller, which may be driven bygears d e from gear D. These parts may be driven as shown in my Patent No. 478,503, above referred to.

9 represents coaxing-tapes running over rollers T T and coacting with the feed-rolls, and g represents coaxing-tapes running over rolls T T and coacting with the deliveryro er.

U u are web-looping rollers journaled in reciprocating plates V, which are operated by pitmen b, connected to the front ends of levers W, pivoted at their rear ends Z on the main frame and lying athwart a shaft 0, said levers having friction-rollers Y engaging cams X on said shaft, by which means the levers W are vibrated and impart the desired reciprocating movements to loopers U u, and these parts are constructed and operated substangisaly as in my Patent No. 501,456, of July 11,

On the carriages H, at the side of the cylinder-shaft nearest the delivery, is a webcompensating device consisting of verticallyreciprocating rack-bars 0, between which is journaled a roller N, the rack-teeth on said bars meshing with small pinions P on the cylinder-shaft, as shown in Figs. 2 and 3. On carriage H, at the side of the cylinder- Carriages H are reciprocated by shaft nearest the feed, is a web-compensating device consisting of vertically-reciprocating rack-bars O, carrying a roller N, the rackteeth on bars 0 meshing with pinions P on the shaft of cylinder 0. Obviously, therefore,- the rollers N N will be raised and lowered alternatelyduring the reeiprocations of the cylinder and'according to its movement. The operation of said compensating devices is similar to that of the walking rack movements in my Patent No. 332,139, of 1885, above mentioned. p designates a frame attached to the beds B B and moving'therewith, said frame extending to and projecting beyond the rear end of the side frames, and on said frame are mounted the web-reversing rollers M M the latter being preferably journaled in adjustable bearings q and constituting the regist'er-adj ustin g roll.

M M are guide-rollers mounted on carriages H at opposite sides of cylinder 0, and M M are guide-rollers mounted on carriages ,H at opposite sides of cylinder 0.

The web 1'0 from roll J is led in under a guide-roller K, between the feed-rolls T L L, up over looping-roller u, down under a-stationary guide-roller K, forward under roller M, up over compensating roller N, down under the cylinder 0', over roller M, back un der roller M up over roller M forward over roller M unde'r cylinder 0, up over compensating roller N, down under roller M for ward over a stationary roller K down under looping-roller U, up to and through the delivery, and thence to a cutter.

Operation: The feed-rolls pay in and the delivery-rollspay out enough paper for two impressions for each complete reciprocation of beds 0 0. During the time of taking impressions looping-rollers U u are raised at such speed that roller 1/. takes up all the Web fed in, and roller U gives off enough web 'to supply the demand of the delivery. Dur-' ing the backward printing strokes of the beds (away from the feed) bed- B pulls forward a length of web equal to the travel of the bed during impression and bed B similarly pulls back from the delivery a length of web equal to the travel of the bed during impression. The web demanded by bed B in this backward movement is provided for by compensating roller N, which descends (as the cylinder moves forward contrary to the bed) and gives 0% just enough from its loop to properly supply the demands of the bed and cylinder. Similarly compensating roller N descends and compensates the web to the demands of bed 13 and cylinder 0. The rolls M M moving rearwardwith the beds and uniformly therewith, keep the web taut between the cylinders; otherwise there would be aslack in the web during the backward movement of the beds. During the forward movements of the beds (and backward movements of the cylinders) bed B feeds the web toward. the delivery and bed B feeds web toward the feed. The demands of the beds and cylinders at this time aresupplied by the forward movement of rolls M M and the slack which would otherwise accumulate between cylinder 0 and the delivery and cylinder B and the feed is taken up by the compensating rollers N N, which now ascend.

Obviously various changes could be made in the construction and arrangement of the web-compensating mechanisms and the relative locations of the beds and cylinders and their operatingdevices, and I do not limit myself to the specific constructions and combinations of parts herein shown and described.

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

1. In a printing-press the combination of a reciprocating bed, an oppositely-reciprocating cylinder, web-feeding mechanism, and a web-guide roller moving with the bed, and a web-compensating roller moving with the cylinder, substantially as described.

2. The combination of a pair of reciprocating beds, a pair of oppositely-reciprocating cylinders coacting with said beds, a web-feeding mechanism, and web-reversing guiderollers between and movable with the beds, and web-compensating rollers moving with the cylinders, substantially as and for the purpose described.

3. In a printing-press, the combination of a pair of reciprocating beds, and cylinders cooperating with said beds; and web feeding and delivery mechanism; with a web-compensating device between the feed and first printing mechanism; a second web-compensating device between the printing mechanisms; and a third web-compensating device between the second printing mechanism, and the delivery, and a compensating roller beside and moving with each cylinder, substantially as set forth.

4:. In a printing-press the combination of a pair of reciprocating beds, and a pair of reciprocating cylinders ooperating with said beds, a web-compensating device beside and moving with each cylinder; and web feeding and delivery mechanism with a looping-roller intermediate the feed and first moving compensating device; and a web-looping roller intermediate the second moving compensating device and delivery, substantially as described.

5. In a printing-press the combination of a pair of reciprocating beds, and a pair of reciprocating cylinders cooperating with said beds, a web-compensating device beside and moving with each cylinder; and web feeding and delivery mechanism, with a looping-roller intermediate the feed and first moving compensating device; and a web-looping roller intermediate the second moving compensating device and delivery, and web-reversing rollers-between and moving with the beds, all substantially as and for the purpose set forth.

,6. The combination of a locomotive-cylin- I der with an oppositely-moving bed, and a web-looping roller beside and moving with the cylinder, and means for moving said roller independently of, but duringits travel with the cylinder, substantially as described.

7. The combination of a locomotive cylinder with a web-looping roller beside and moving with the cylinder, and means for moving said-roller independently of, but during, its travel with the cylinder, with a bed moving oppositely to the cylinder, and means for feeding a web around said looping-roller and between the bed and cylinder, substantially as and for the purpose described.

8. The combination of oppositely-recipro= eating beds and cylinders, web feeding and delivery mechanism, a pair of connected looping-rollers between the feed anddelivery, and the printingmechanisms, and cams and levers for operating said looping-rollers; with web-reversing rollers intermediate and moving with said beds; and Web-compensating rollers beside and traveling with each cylin+ der, and operated therefrom, substantially as and for the purpose set forth.

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

JOSEPH L. COX.

'Witnesses:

I. L. STONE, FRANK W. DUNNING.