US317679A - Printing-machine - Google Patents

Description

(No Model.) 2 Sheets-Sheet- 1..'

W. SCOTT.

PRINTING MACHINE.

No. 317,679. Patented Mway 12, 1885.

N. PETERS, Phnm-Limvgnpmr. washington, n.6.

2 Sheets Sheet 2.

` (No Model.)

W. SCOTT.V

PRINTING MACHINE.

Patented May 12, 1885.

N. PETERS, Pmm-umgnpmr. wnsmngmn, D. c.

" UNITED STATESA PATENT OFFICE.

WALTER SCOTT, OF PLAINFIELD, NEW lJERSEY.

PRINTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 317,679, dated May 12, 1885. Application filed January 29, 1884. (No model.)

To all whom it may concern:

Be it known that I, WALTER SCOTT, of

. Plainfield, in the county of Union and State of is a specification.

New Jersey, have invented an Improvement 1n Printing-Machines, of which the following In this press I make use of two rolls of paper; the webs are drawn off from the same and passed together between cylinders that measure the length of sheet and partially separate the same by rows of perforations 5 the sheets are then conveyed by belts to impression-cylinders above and below the revolving type-cylinder, the motion being accelerated so as to separate the sheets at the perforations: the sheets are taken by a second set of impressioncylinders and thereby reversed and their unprinted surfaces brought into contact with the types upon a second printing-cylinder. From thence the sheets are conveyed away to any suitable delivery apparatus, or to folding-machines. By this improvement both sides of the sheets from two webs are printed before delivery from the press.

In the drawings, Figure l is a longitudinal section of the press. Fig. 2 is a diagram representing the frame and the manner in which the parts can be geared 5 and Fig. 3 shows one of the ends of a roll of paperand its frictionbrake.i

The cylinders A and A are provided with formsections c and c, and with ink-distribut ing surfaces Z and b, and they are revolved in opposite directions, as indicated by the arrows. The printing-sections occupy not more than one-half of the periphery of each formcylinder. .Ihe impression-cylinders B and B are half the diameter of the form-cyli ders, and they are provided with grippers b2 an b3, and are rotated in the directions indicated by the arrows. The sheets are brought to these impression-cylinders by the tapes or belts c e around therespective rollers j', ff, f2, f3, f4, f6,

and e5, and the sheet is drawn apart by the accelerated movement given to it when the advancing end reaches the roller e5, and it is gripped thereupon by the tapes c', and the sheet is taken by the grippers b2 of the impressioncylinder B, carried beneath the same up and into contact with the printing surface or section c of the form-cylinder A 5 then it is carried around by the cylinder B until it reaches the impression-cylinder B where the grippers b2 release the same, and the grippers b3 take the sheet and carry it up,and it receives the second impression on the other side from the printingsection c of the cylinder A', and the sheet is carried off by the belts or tapes c c, that pass around B', 16, 15, 14, and 13 to a folding-machine or other delivering device. These parts thus far described are similar to those in my Patent No. 312,022, and hence do not require further description herein, and they are not separately claimed.

The ink-troughs H H, the distributing-cylinders G G, the working and inking rollers g g, and the doctors 1L lL h It are arranged as shown,

.and supply ink from the respective troughs to the tables b b on the respective cylinders A A. The inking-rollers S S and the frames carrying the same are moved in and out by cams, as in my aforesaid application. These rollers, however, for convenience, are placed in the positions shown to give more space for the other parts that are com bined in this press. The doctor-roller h is received by arms that extend out from the rock-shaft h6, and are provided With slotted bearings at their ends, and the doctor-roller h is upon arms that also extend out from the same shaft h6, and to the rock-shaft the proper motion is given bya cam upon the shaft n or other suitable mechanism. By this construction the doctor-rollers It h are moved simultaneously, the roller 7L transfer- `ring ink from the trough to the distributingcylinder G, and the roller h transfers ink from G to the surface b of the cylinder A. The parts areduplicated for the cylinder A. The ink is supplied by the doctor h to the cylinder G, While the doctor h is not in contact therewith; hence the fresh ink on G is distributed before the doctor It is brought back into contact with it. This insures more perfect distribution of the ink.

Instead of using one roll of paper, I make use ofthe two rolls F F2. The shafts F3F4 ofthe same are received into the bearings 21 22, the upper parts of which are by preference hinged so as to facilitate opening and closing, and provided with a thumb-nut or turn-button for holding the parts in place when closed upon the shaft. Each roll is provided with a brakebar, c', the ends of which are received in and guided by the slotted frames F5, and beneath IOO each end of such brake-bars thereis a spring, c, and ,a guide-rod for the same. The springs raise the brake-barst andl apply sufcient friction to the surfaces of the rolls of paper to prevent such rolls revolving too rapidly when the press is in operation. The two sheets or webs of paper are taken off fromf'the rolls be`-. tween the two pairs of cylinders E E and D D These cylinders are of different diameters-in tin g-cylinders are to be revolved once for each revolution of the form-cylinders, and the 4pair of cylindersv that is not provided with the knife may be slightly separated, sojas only to guide the paper passing through between them, and thus'a-llow the'paper to be drawn and measured by the other pair of cylinders 5 or it will usually be preferable to maintain the same surface-speed in all fourv rollers, D.

" D" E E. by the gearing 26 27 28 29, (represented by dotted lines in Fig. 2,) and to provide bevel-gears 3031 and 32 33 to give motion from the drivingshaft a to either the cutting-cylinder Dor the cutting-cylinder E, the gear that is upon the shaft of the cuttingcylinder that is not provided with the cutter being either removed or loosened, so as to turn independently of the shaft and allow the motion to be given to the other cutting-cylinder,

and from itto the four cylinders, at a uniform surface-speed, and with one revolution for each Vrevolution of the printing-cylinder A. The,impression-cylinders T and T are above the form-cylinders A A and supported in adinstable journalbearings `in the frames A3.

These cylinders T T. areprovided with grippers t and t2, and as the cylinders revolve twice for each revolution of the form-cylinders and the grippers t, after taking the sheet, do not deliver the same to the grippers t3 until the second revolution of T, it is necessary to employ the cams 4() 50 upon the lever or rocker J3, ,similar tothe rocker J and cams 4 and 5, that are employed in connection withthe impression-cylinders B and B, and these rock- 'ers J J3 are to be moved by eccentrics or cams upon the shafts of the form-cylinder, as set forth in my aforesaid application, or in any other convenient manner. The tapes Z Z that convey the sheets of paper and separate the same successively from the web, are passed around the respective rollers Z2 Z3 Z4 Z5 ZG Z7 Z3, and act in the saine manner as the tapes e e',- but itis necessary to throw back these belts Z Z sufficiently to give access to the form-cylinder A for introducing the types, stereotypes, or other printing-surfaces, or for withdrawing orl removing the same. I therefore provide arms p, that receive at their outer ends thejournals of the-rollers Z4 Z?, and tiles-@arms p are eitherpivoted to the frames A3 or to the shaft of the roller Z7; hence, when the arms p are swung up, they carry with them the rollers l1L Z5 and tapes; the latter are loosened and the parts'are removed out of way to give access tothe cylinder A. 4

By reference to Fig. l it will be understood that the sheet passing up to the impressioncylinder T by the belts ZZ is separated by the belts at Z7 and accelerated, and the advancing end of the sheet is seized by the grippers tand carried down to the point of impression upon the surface a much sooner than the sheet that is carried to the cylinder B by the belts c c', because such sheet has to be carried from the under to the upper side of such cylinder B before it reaches the printing-surface a; hence the advancing end of the printing-surface a reaches the impression-cylinder B at the right time to print the sheet as it is presented lby the said cylinder B.

Although the printing-surface a is iirst in contact with the sheet on lthe impressioncylinder T, the sheet on the impression-cylinder B will not be in .position to be printed untilv the advancing edge of the printing-surface cr reaches said cylinder B. The sheet after it has been printed on the cylinder T is carried around by the grippers Z until the grippers t2 of the cylinder T receive the same andthe grippers t are opened by the cam 40. The cylinder T carries the sheet up and brings it down to the cylinder A by the time the printing-surface a reaches said cylinder T. The second impression is then made and the grippers t3 retain their hold, the cam 50 being out of the way as the grippers pass the same, and then the grippers t3 are opened by the cam 41 at the same time that the grippers t3 are closed by the cam 5l, and the sheet is taken upon the delivery-cylinder T2 and carried around and delivered between the belts m m', and by them conveyed to any suitable folding or other delivering apparatus. The belts' or tapes m pass around the cylinder T2 and roller n2, and the belts m pass around the rollers n a4. The grippers t3 retain their hold upon the sheet until its advancing end passes in between the'roller n4 and the cylinder T3, and the said gripper t" is opened at this point by a stationary ca-m. The lever J 4 is moved by an eccentric or cam upon the shaft 11.6 so as to swing the cams 41 5l into the path of the gripper wrists or cranks at the proper time for opening or closing the same.` The levers J J3 J 4 are all simil-arl y actuated so that their cams are made to act in the desired manner upon the respective grippers. The shafts l() and 1l of the .impression-cylinders T T are to be in adjustable bearings in the frame, so that the impression may be adjusted, and the shaft 12 of the delivery-cylinder T2 is placed in the side lever-,arms a3; so also is the shaft.

of the roller a2, and these side lever-arms a3 have the shaft ll as their pivot, so that the ,levers can be swung up and carry the delivery- IOO IIO

cylinder T2, belts m, and roller n2 up out of the way to give access to the printing-surface a of the cylinder A', and the roller n4 may be lifted out of its jaws 42 in the frame A3 to get lthe same and the belts m out of the way. When the press is in use, the shaft 12 is received in jaws 43. Ifthe cylinder T2 is placed in the position indicated by the dotted lines, Fig. l, it will be suflciently high to allow access beneath it to the printingsurface a', and hence said cylinder T2 may be stationary. It is usually preferable to allow the grippers t to remain open after having delivered the sheet to the grippers t2 until they come around the second time and close upon the sheet as its advancing end is presented by the belts l Z. In this case the cam 4.4 may be placed upon a lever, 45, and be moved by a cam or eccentric on a6 to bring it into and out of the path of the crank or wrist of the grippers t.

Upon reference to the dotted circles in the diagram, Fig. 2, it will be apparent that the gear-wheels indicated by these dotted circles can be used for giving the properv motions to the respective parts 5 but I do not limit myself to this manner of arranging the gearing.

It is to be understood that any sheet-seizing device-such as pins or a suction apparatus may be used in place of the grippers, and, being well-known, are the equivalents of the grippers.

This arrangement of impression-cylinders might be used with feed boards or tables to supply the sheets by hand to the cylinders B and T, or such sheets may be supplied from one roll of paper with suitable switch and tapes to direct the sheets successively and alternately to the cylinders B and T. Devices that will supply sheets in this manner are well known.

It is preferable to employ composition inkin g-rollers s2 s3 between the cylinders A A/ to ink the printing-surfaces between one impression and the next. These rollers s2 s3 should be placed upon frames and moved inand out, the same as the other rollers, s. The journals of the rollers e5 and Z"I are in bearings that are movable, and screws and nuts are employed to retain the bearings in place. The object of this adjustment is to allow for the introduction of longer or shorter tapes or belts, so as to accurately adjust the distance the sheets have to travel between the place where they are cut, and where they are received by the respcctive grippers, so that the impression may be made upon the sheet with uniformity of margin.

I do not claim any portion of the inking apparatus separately, but when the form-cylinders are used with four impression-cylinders it is necessary to arrange the inking-roll ers in such a manner that the types will be inked twice during each revolution of each form-cylinder. I have therefore combined the inking-rollers with the said form-cylinders and impression-cylinders in the manner before described to accomplish this object. In my Patent No. 312,022 two form-cylinders with ink-distributing surfaces are made use of in combination with two impression-cylinders, the sheet being taken from one impression-cylinder and reversed and presented to the second type-cylinder. I do not in this application, therefore, lay claim to any such device.

I claim as my inventionl. The combination, with two form-eylinders having printing-surfaces and ink-distributing surfaces, of fourimpression-cylinders and their respective grippers, substantially as set forth.

2. The combination, with two formcylinders having printing and ink-distributin g surfaces, of four impression-cylinders and their respective grippers, belts for conveying the sheets of paper, the rollers for the respective belts, the cutting-cylinders, and feeding mechanism, substantially as specified, for conveying to the re spective impression-cylinders sheets cut from two rolls of paper, substantially as set forth.

3. In combination with a form-cylinder having printing and ink-distributing surfaces,

two pairs of cutting-cylinders of different diameters, and a knife that can be applied to either cylinder, whereby the web can be cut off in sheets of different lengths, substantially as set forth.

et. The combination, with the cylinders E E D D and the cutter or knife, of the shaft n, bevel-gears 30 31, 32 33, for connecting the shaft of the cylinder D or of the cylinder E to the shaft n, and the wheels 25 26 27, 23 29, for connecting all the cylinders together, substantially as set forth. Y

5. The combination, with the two form-cylinders having printing and ink-distributing surfaces, of the impression-cylinders T T above the thrill-cylinders, the impression cylinders B B' below the form'cylinders, the inktroughs and rollers, ink-distributing cylinders G, and rollers, the doctors h h/ h h', the rockshafts and arms thereon for supporting and moving the doctor-rollers simultaneously, the said parts occupying positions in two separate sets at opposite sides of the central portions of the formcylinders G, the inking-rollersls s, and the inking-rollers s2 s3 between the formcylinders to ink the respective printing surfaces between each impression, substantially as set forth.

6. The combination of the cylinder A, impression-cylinders B T, tapes or belts e e l l, and their respective rollers, and the arms p, substantially as and for the purposes set forth.

7. The combination, with the cylinder A and impression-cylinder T, of the delivery-cylinder T2, belts m m', rollers a 'n4 n2, and arms n3, substantially as set forth.

8. The combination, with the box and shaft for holding the paper-roll, of the brake c', springs t, and guideframe F5, substantially as set forth.

9. The combination, with the form-cylinder, of two impression-cylinders, mechanism, sub- IOO IIO

stantially as specified, for cutting the Web of Sig-ned by me'this 25th day'of'.alllmxy, A.

paper from two rolls into sheets, and for Con- D. 1884.

veying the same to the impressioncyinders, WALTER SCOTT. and an adjusting device for moving the roller e5 or Z7, or both, und allowing bhe length of the 1 belts to be varied, for the purposes and sub- GEO. T. PlNoKNEY, stantially as set forth. 1 WILLIAM G. MOTT.

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