US449446A

US449446A - hunter

Info

Publication number: US449446A
Authority: US
Publication date: 1891-03-31
Anticipated expiration: 1908-03-31

Description

(No Model.) 2 SheetsSheet 1.

R. M. HUNTER. PERFEOTING PRINTING MACHINE.

No. 449,446. Patented Mar. 81, 1891.

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(NoModeL) 2 Sheets-Sheet 2.

R. M. HUNTER. PERPEGTING PRINTING MAGHINE.

No. 449,446.' Patented Mar. 31, 1891.

XVI venfoy' UNITED STATES PATENT tribe.

RUDOLPH M. HUNTER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE FEISTER PRINTING COMPANY, OF SAME PLACE.

PERFECTING PRlNTlNG-MACi-HNE.

SPECIFICATION forming part of Letters Patent No. 449,4d6, dated March 31, 1891.

Application filed December 29, 1887. Serial No. 259,349. (No model.)

To' all whom it may concern.-

Be it known that I, RUDOLPH M. HUNTER, of the city and county of Philadelphia, and State of Pennsylvania, have invented an Improvement in Perfecting Printing-Machines, of which the following is a specification.

My invention has reference to perfecting printing-presses; and it consists of certain improvements, all of which are fully set forth in the following specification and shown in the accompanying drawings, which form part thereof.

The object of my invention is to enable the continuous printing of a web of paper in such a manner that the faces may both be printed on in the form of pages and in perfect register, so that if such pages are assembled and bound into book form the margins shall be uniform. The printed web would be automatically cut into sheets after both sides have been printed upon and then automatically stacked to be used as circulars or to be bound in any well-known manner.

In carrying out my invention I cause a web of paper to pass first between one pair of type and impression cylinders, and,having one side printed on in a continuous manner thereby, I cause the web to pass between a second pair of type and impression cylinders, but in the reverse order-that is to say, in the first pair the type-cylinder was above and in the second pair it was below, or vice versa. These cylinders are geared together to run at given speeds. The paper web is drawn from a roll by feeding-cylinders, and after passing between the first pair of printing and impression cylinders it passes around a speed-regulating roller and over guide-rollers, and then between the second pair of printing and impression cylinders. Next the paper passes between feed-rollers, then cutting-rollers, and the sheets so formed are delivered in any suitable manner. As shown, they are delivered and stacked by air-blast and guides. The last-mentioned pair of feed-rollers are driven by suitable means, whereby they may have their speed varied to suit any variation in the length of the paper due to the dampening effect of the printing and the tension under which it is put. The object in View is that if the web enters the first pair of printing and impression cylinders in length to print one thousand pages, and after having left the second set of printing and impression cylinders it would have elongated sufficiently to have made one thousand and one pages, we should have the bulk of the printing out of register. If, however, the paper were made to feed faster or slower in the second printing, as circumstances required, then the register maybe made absolutely perfect. To accomplish this I make the variation in the length of the paper itself regulate the speed of the feed-rollers. WVhen the paper is fed to the first impression and printing cylinders it may be dry or steamed to a certain extent to makeit receive the impression of the type-form, and the amount of expansion of the paper in passing through the press will depend upon the tension under which it is put and the degree to which it is dampened, either as a preliminary step or by act of printing. It is evident that as this expansion varies the speed of the feedrollers must increase or decrease, as required. The cutting-rollers are run at a fixed speed, which is preferably the maximum corresponding to the greatest expansion of the paper, and the feed-rollers run at a variable speed, having a maximum equal to that of the cuttingrolls. In practice the cutting-rolls would not press upon the face of the paper, so that the difference in speeds between the cutting and feed rolls will not cause blurring of the printed sheet. These details, however, are of secondary importance to my invention.

In the drawings, Figure l is a sectional elevation of a perfecting printing-press embodying my improvements. Fig. 2 is a cross-section of same on line w cc, and Fig. 3 is an enlarged view of the left-hand portion of Fig. 1.

A and B are respectively the type and impression cylinders of the first pair, and O and D the corresponding cylinders of the second pair. It will be observed that in one pair the type-cylinder is above and in the other it is below, so as to print upon each side of the paper. The type-cylinder may be made in any manner desired, but preferably with removable type-forms, as is customary. The type-forms may be in any number desired, the largest book capable of being printed be ing equal to twice as many pages as there type-cylinder, so that each form has its own make ready; but this is not necessary to the invention.

F is the roll of paper, and E is the paperweb. The paper web passes through the feedrollers G, gearing with the cylinders A or B, and after passing between said cylinders it is guided over roller H, under roller 1, over guide-roller J, and then between the second pair of type and impression cylinders G and D. The cylinders A and B are geared together, as are also cylinders O and D, and these pairs are also geared together by spurwheel U and are driven by band-wheel n.

K K are feed-rollers for the paper after it leaves the second pair of cylinders O D, which are geared together. t

The cutting-rollers L may be run at a speed sufficient to properly divide the printed sheets with a maximum expansion, and they may receive motion from the main gear of the type-form cylinder 0 by gears Z. By this means it is only necessary for,the rollers K to retard the passage of the paper between the cutting-rolls more or less below the maximum speed of travel.

Secured to one of the rollers K is a conical band-pulley P. Supported in suitable bearings is another conical band-pulley Q, arranged parallel to pulley I but having its small end adjacent to the large end of the said pulley I, and this pulley Q is driven from the printing and impression cylinders in any well-known manner. As shown, the pulley Q has aspur-wheel q, which meshes with the cylinder 0 and is therefore driven with a speed commensurate with the speed of the printing-cylinders.

Ris a band passing around the pulleys P Q, and by being shifted may cause the rollers K to revolve faster or slower. The belt R is shifted by a shifting-rod 7, which is acted on by levers T t, connecting with the frame 1', carrying the roller I.

S is a spring which causes the roller I to pull down upon the paper web. In place of this spring a weight might be used. From this it will be seen that if the paper becomes too long the belt is shifted and the excess of paper taken up, or vice versa. These movements are so gradual that any variation will not be perceptible. If desired, the roller H may be substituted by a pair of feed-cylinders similar to G, as indicated in dotted lines.

The-paper in being printed is onlyheld between the type andimpression-surface at intcrvals, and between the impressions any take-up necessary is accomplished. The parts are moving so quickly and the lengthening of the paper is so small that the move- The impression-cyl-l inders are shown of the same diameter as the ment with any one impression is practically imperceptible, but when multiplied into thousands of pages the register would be thrown out appreciably. Furthermore, the invention, broadly considered, is complete without the cutting-rolls.

After the paper web is cut up into sheets it is blown back into a stacking-frame by blast-nozzle N, being guided in its passage by guards M. It is evident that any of the numerous automatic binding devices may be combined with this machine, just as it is combined in Patent No. 256,662, of 1882, to Feister.

I do notlimit mylinvention to the specific compensating means here shown; neither do confine myself to the particular arrangement of parts set out, as the details may be modified in various ways without departing from my invention.

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

1. In a perfecting printing-press to print upon a web of paper, the combination of two pairs of type and impression cylinders, one pair being adapted to print upon one face and the other pair being adapted to print upon the opposite face of the web of paper, feedrollers to feed the paper to the first pair of printing and impression cylinders, variablespeed feed-rollers to feed the paper through the second pair of type and impression cylinders, and suitable means to vary the speed of the last-mentioned feed-rollers, substantially as and for the purpose specified. v

2. In a perfecting printing-press to print upon a web of paper, the combination of two pairs of type and impression cylinders, one pair being adapted to print upon one face and the other pair being adapted to print upon the opposite face of the web of paper, feed-rollers to feed the paper to the first pair of printing and impression cylinders, variable-speed feedrollers to feed the paper through the second pair of type and impression cylinders, cutting-cylinders geared to run at a uniform surface speed with the impression-cylinders, and suitable means to vary the speed of the last-mentioned feed-rollers, substantially as and for the purpose specified.

3. In a perfecting printing-press to print upon a web of paper, the combination of two pairs of type and impression cylinders, one pair being adapted to print upon one face and the other pair being adapted to print upon the opposite face of the web of paper, feed-rollers to feed the paper to the first pair of printing and impression cylinders, Variable-speed feedrollers to feed the paper through the second pair of type and impression cylinders, and suitable means automatically controlled by the paper web to vary-the speed of the lastmentioned feed-rollers, substantially as and for the purpose specified.

4. In a perfecting printing-press to print upon a web of paper, the combination of two pairs of type and impression cylinders, one pair being adapted to print upon one face and the otherpair being adapted to print upon the opposite face of the web of paper, feed-rollers to feed the paper to the first pair of printing and impression cylinders, feed -rollers for drawing the paper between the second pair of type and impression cylinders, a tension guide-roller over which the paper web passes before reaching the last-mentioned feedrolls, variable-speed-controlling devices to vary the speed of said last-mentioned feedrolls, and connecting devices between said tension guide-roller and variable-speed-controlling devices, substantially as set out, whereby any lengthening or shortening of the paper may be compensated for and a perfect register in the second impression obtained.

5. Ina perfecting printing-press to print upon a web of paper, the combination of two pairs of type and impression cylinders, one pair being adapted to print upon one face and the other pair being adapted to print upon the opposite face of the web of paper, feedrollers to feed the paper to the first pair of printing and impression cylinders, feed-rollers for drawing the paper between the second pair of type and impression cylinders, a tension guide-roller over which the paper Web passes before reaching the last-mentioned feed-rolls, variable-Speed-controlling devices, substantially as set out, to vary the speed of said last-mentioned feed-rolls, connecting devices, substantially as set out, between said tension guide-roller and variable-speed-controlling devices, whereby any lengthening or shortening of the paper may be compensated for and a perfect register in the second impression obtained, and cutting-cylinders to cut the web into sheets as it leaves the feedrollers.

6. In a perfecting printing-press to print upon a web of paper, the combination of two pairs of type and impression cylinders, one pair being adapted to print upon one face and the other pair being adapted to print upon the opposite face of the web of paper, feedrollers to feed the paper to the first pair of printing and impression cylinders, feed-rollers K K, driving conical pulley Q, conical pulley P, carried by one of the rollers K, belt R, passing around said pulleys, belt-shifter r, tension guide-roller I, around which the pa per passes in its transit between the two pairs of type and impression cylinders, and connecting devices between the said roller I and belt-shifter, substantially as and for the purpose specified.

7. In a perfecting printing-press to print upon a web of paper, the combination of two pairs of type and impression cylinders, one pair being adapted to print upon one face and the other pair being adapted to print upon the opposite face of the web of paper, feedrollers to feed the paper to the first pair of printing and impression cylinders, feed-rollers K K, driving conical pulley Q, conical pulley P, carried by one of the rollers K, belt R, passing around said pulleys, belt-shifter 4", tension guide-roller I, around which the paper passes in its transitbetween the two pairs of type and impression cylinders, and connecting devices, substantially as set out, between the said roller I and belt-shifter, and cutting-cylinders L, geared together and having the same surface speed as the impressioncylinders, substantially as and for the purpose specified.

8. In a perfecting printing-press, the combination of two pairs of type and impression cylinders, one pair being adapted to print upon one face of the paper and the other pair being adapted to print upon the other face of the paper, and suitable feed-rollers to feed a web of paper between the pairs of impression and type cylinders in succession, and variable speed controlling devices, substantially as herein set out, to vary the speed of the paper passing between one pair of cylinders with reference to the paper passing through the other pair of cylinders.

In testimonyof which invention I hereunto set my hand.

RUDOLPH M. HUNTER.

Witnesses:

HARRY DRURY, E. M. BREOKINREED.