US738527A - Printing-machine. - Google Patents

Description

PATENTED SEPT. 8, 1903.

` I. GossAN.

PRINTING MACHINE.

APPLIOATION FILED NOV. 15, 1900. Y

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N0 MODEL.

ma Nunms PEI-sns co. PnoYmnHo.. WASHINGTON, u. I.

PATNNTBD sE'PT. 8

I. GossAR. PRINTING MACHINE.

APPLIUATION FILED NOV. l5, 1900.

4 SHEETS-SHEET 2.

.NO MODEL.

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No. 738,527. PATENTED SEPT. 8, 1903. T. GOSSAR.

PRINTING MACHINE.

Y APPLICATION FILED NOY.15. 1900.

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PATENTED SEPT. 8', 1903. T. GOSSAR.

PRINTING MACHINE.

APPLmATIox FILED 1rov.15. 1900.

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1H: Now'ms mms ce. fora-urne.. wAsmNcYo UNITED STATES Patented september 8,1903.'

` PATENT OFFICE.

TOMAS COSSAR, OF GOVAN, SCOTLAND.

PRINTING-MACHINE.

SPECIFICATION formingpart of Letters Patent No. 738,527, dated September 8, 1903.

Application filed November 15, 1900. Serial No. 36.552. (No model.)

To all whom, t may concern:

Beit known that I, THOMAS CossAR, a citizen of the United Kingdom of Great Britain and Ireland, residing at 6 Osborne Place, Govan, Lanarkshire, Scotland, have invented certain new and useful Improvements in Printing-Machines, of which the following is a specification.

The invention relates to oscillating-cylinder printingmachines-t'. e., machines in which the cylinder prints on the backward and forward movement of the type-bedand the invention has for its object to provide means for automatically and intermittently feeding the paper to be printed froin a roll or web.

The accompanying drawings illustrate the invention, Figure 1. being a side elevation, and Fig. 2 a plan, of an oscillating-cylinder printing-machine having my improvements applied thereto. Fig. 3 is a side View in elevation, and Fig. 4 a plan View looking from the top, of an arrangement of Vguides and rollers employed in conjunction with the improvements under special circumstances hereinafter referred to, and Fig. 5 a plan of a modification thereof.

Referring to the drawings, Z represents the side frames of the machine, and A is the impression-cylinder, journaled in said frames. The impression-cylinder has gear-wheels on each end meshing with racks fixed on each side of the type-bed B in the usual way, and the type-bed or form-table is reciprocated backward and forward by the crank-disk I, acting through the connecting-rod 6, toothed wheels T, and racks S and U, or any other known method of reciprocating the bed may be employed. The bed is supported on rails (not shown in the drawings) in the usual manner and provided with inking-rollers ct ct' a2 a3, which receive ink from a fountain at each end of the machine through the intervention of the ink-tables t' t.

D D are rollers, termed the feeding-in rollers, journaled in the side frames Z Z, which rollers pull the web C from the reel at the proper speed, D' being pressed against D by a spring b, acting through a bush c at each end of the roller D'.

J J are rollers, termed the feedingout rollers, journaled in the side frames Z Z and geared through toothed gearing (not shown in the drawings) with the rollers D D', so that the surface speed of both pairs of rollers will be the same. The roller J is driven by belt or toothed gearing from any continuously-rotating shaft of the machine, preferably the main driving-shaft s; but whatever method of driving is employed change-wheels may be interposed, so that the speed of rollers J, J', D, and D can be altered to suit different sizes of work being printed, the changewheels being interposed either between the main shaft and a pulley driven therefrom or between the driving-pulley when the latter is on the main shaft and the pulley or gearing on the spindle of the roller J. When the roller J is driven by a belt, the driving-pulleys are slightly coned, the belt being held within forks, which can be moved along the cone-pulleys to vary the speed, so that when printing the second side of the web the second printing may be kept in register or back to back with the irst printing, as 'the paper may have shrunk or lengthened since the rst printing, or if the paper is out of register through any other cause.

F represents the sides of the movable frame projections H', one end of which slides in slots l1 l1, formed in the side frames Z and Z, the sides F being fastened together by the rods F2 to form the movable frame. The movable frame F has toothed racks F3 F3, formed on the lower edges of its sides, which gear with spur-wheels G and G, and E F. are

rollers journaled in said frame F, which have` pulleys E2 E3, tted at one of their ends, around which `a belt 2 passes.

The belt 2 is endless and passes around the feeding-in roller D', around the movable roller E, around the guide-roller X, around the guide-roller Y, around the movable roller E', around the feeding-outroller J', over a tension-wheel 3, carried on an arm 4. and arranged so that it may be raised or lowered to get the proper tension on the belt, the belt 2 thence passing to the feeding-in roller D again. This belt 2 passing around rollers D' and J' is driven by them and passing around rollers E, X, Y, and E' positively turns these at the same speed as the paper and so takes the strain off the same and lessens the probability of its being torn or burst.

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The spur-Wheels G G gear with the racks F3 on the movable frame F, and these wheels G G are keyedon a shaft 5, j'ournaled in the side frames Z Z.

L is a spur-wheel, also fixed on the shaft 5 and gearing with a rack M on a rod O. The rod O also carries a roller P on its other end, which roller is engaged by a cam H. The roller end of the rod O is also attached to a lever or radius arm Q, which is pivoted at Q" to the frame of the machine and which keeps the rod O in position.

The cam iiXed on the shaft s and engaging the roller P, carried by the rod O, is so constructed that in conjunction with the roller P, rod O, rack M, spur-Wheel L, spur-wheels G, and racks F3 it moves the rollers E E, carried by frame F, to cause the requisite feeding of the paper or web. The cam H may be removed and one of a dierent size substituted when work of a different size is being done.

The web O is drawn from a roll or web of paper, which may be hung in bearings or brackets fixed to the machine in the usual way. The web C after leaving the rolls is first led between the feeding-in rollers D and D, which grip the paper and act to pull it from the roll at the speed required-vl. e., in a complete revolution of the driving-shaft the rolls D D pull off enough paper from the roll or web for two printings. The web C is then led or looped around the roller E in the movable frame F, thence around the guideroller X, under the impression-cylinder A, around the guide-roller Y, around the roller E', and finally between the feeding-out 'rollers J J'. At this point the web may be directed to a rereeling device, at which it would be rewound in order that it may be sent through the machine again to be perfected--A 1'.. e., printed on the second side or again on the first side, if it is required, in order to print in another color or for any other reason, or it may be directed to a cutting device which cuts it into sheets.

When dealing with a web of half or less than half the breadth of the type-bed, as shown at Figs. 3, 4, and 5, in order to be able at the same time to perfect the webz'. e. to print it on the second side-the forms for the first side are arranged on the type-bed on one side vof the longitudinal center line of the printing-machine and the forms for the second side are fixed on the type-bed on the other side of the longitudinalcenterlineofthesame. The web (being half or less than half the breadth of the type-bed) is first led through, between, over, and under the rollers and cylinder, as before mentioned, being kept to the same side of the longitudinal center line of machine as the forms for printing the first side, so that it will be presented to and printed by them. After leaving the feeding-out rollers J J the web is turned vback again toward the vertical center of the impression-cylinder A aroundV a round-edged bar 8, set at an Aangle of fortyand parallelv to the first bar.

five degrees to the path of the web, which directs it along a path at right angles to its previous path and transversely of the machine, the web being then led over a roller V, journaled in bearings attached to carrying- bars 12 and 13, this roller being movable, so that it may be used to bring the lpaper into register; The paper is thereafter led back again still transversely of the machine, but in a direction opposite to that immediately previous, and then around a second round-edged bar l0, xed at an angle of forty-five degrees to the then path of the web and at an angle of ninety degrees to the first fixed bar 8, which directs the web along a path parallel to its original direction. The web is thus turned in order to present the second side to the form and is deflected to the opposite side of the longitudinal'center line of the machine. The web is then led parallel to the first portion of itself, thence around the upper of the feeding-.in rollers D D', through between these and around the roller E, guide-roller X, impression-cylinder A, guide-roller Y, roller E', and finally between the feeding-out rollers J J', when it may be reeled or cut and folded in the usual way. The web when passing below the cylinder the second time is presented to and printed by the second set of forms, thus perfecting the web.

When dealing with a web of half or less than half the breadth ofthe type-bed, in order to be able to print the web again on the first side, if it is required to print in another color or for any other reason, the forms for the first printing are fixed on the type-bed as already mentioned for dealing with half-breadth rolls. The web is led through, between, over, and under the rollers and cylinder, as before stated, on the same side of the longitudinalcenter line of the machine as are the forms for the first printing, and when leaving the feeding-out rollers J J the web is led over the roller J and back and around the round-edged bar 8, placed at forty-five degrees to the path of the web, which bar directs the web at right angles to its original path andtransversely of the machine,and then around the round-edged bar 9, (shown at Fig. 5,) placed at an angle of forty-five degrees to the path of the web The web is thus directed along a path parallel to its original path and around a registering device, also einployed when printing on the reverse side of the web, consisting of an adjustable roller D2, located inside of and slightly above the feeding-in roller D', and again through between .the rollers'D D', over and under the other rollers and cylinder, as before stated, and on leaving the feeding-out rollers J J may be rereeled or cut and folded, such roller D2 contacting with a like roller located on either side thereof immediately below the same, as shown in Fig. 3. Through the action ofthe Vround-edged bars 8 and 9 the web is defiected from one side of the longitudinal center line of the machine to the other side of the same,

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but is not turned, and on passing through the' machine for the second time the side already printed is presented to and printed by the second set of forms.

The action of the apparatus is as follows: Assuming the type-bed to be in the position shown by the drawingsi. c., about the middle of its printing motion in the direction of the arrow-the traveling frame F, with the rollers E E', is at that part of its stroke shown by the drawings and moving in the direction toward the feeding-in end, being moved by the cam I-I in conjunction with the roller P, rod O, rack M on rod meshing with the spurwheel L on the shaft 5, the spur-wheels G G on the shaft 5 meshing with the racks F3 on the frame F, which carries the rollers E E, the rollerE shortening the loop on the feeding-in side enough to supply the web to the cylinder at the proper speed, While taking up the web being fed in by the feeding-in rollers D D', and the roller E acting to take up the slack which would otherwise be formed on the delivery side of the cylinder, While allowing the feeding-out rollers .I J to roll out the Web at a constant speed. When the form-bed has traveled so far on its forward stroke that the form has cleared the impression-cylinder A, the cam H acts to move the frame F, carrying the rollers E E, farther to the right, which action, combined with the action of the feedingin rollers D D and the feeding-out rollers J J', causes the Web to be shifted through below the cylinder toward the left a sufficient distance to provide enough web for the printing on the return stroke of bed. This shifting action takes place while the form is clear of the impression-cylinder and is reversing its direction of travel and before it again comes into printing contact with theimpression-cylinder. On the backward stroke of the type-bed the paper drawn through receives its impression, the traveling frame being caused to return toward the left by the action of the cam H, Vand the roller E shortens the loop on the delivery side of the impression-cylinder to supply the web to the cylinder at the proper speed, while allowing the feeding-out rollers J J' to roll out the web at a constant speed, and theroller E at the same time lengthening the loop on the feeding-in side in order to take up the web supplied by the constant feed of the feed-1 rolls D D and the motion of the form-bed to the right. As the form clears the impressioncylinder A in the stroke of the bed in this di` rection, the. cam H acts to cause the frame F and rollers FX E to move to the right, and this movement, combined with the action of the feeding-out rollers J J and the feeding-in rollers D D', effects the shifting through below the impression-cylinder A of the length just printed and brings a fresh portion into position to be printed on the forward motion of the type-bed B, this shifting action taking place when the form is clear of the impressioncylinder and reversing its direction of motion and before the form again comes into printing contact with' the impressioncylinder. This completes the cycle of operations, which continue until the desired number of impressions have been taken.

Having now described the invention, what I claim, and desire to secure by Letters Patent, isj Y l. In an oscillating-cylinder printing-machine, means for automatically and intermittently feeding the paper to be printed from the web, said means consisting of feeding-in and feeding-out rollers, a horizontally-movable frame carrying rollers over which the paper is looped, racks on said frame, spurwheels gearing into said racks and keyed at each end of a transverse shaft having its bearings in the machine-framing, a third spur-Wheel on the transverse shaft, a rack for actuating the latter spur-wheel, and a rotating cam for actuating the last-mentioned rack, substantially as described.

2.' In an oscillating-cylinder printing-machine, the combination with means for automatically and intermittently feeding the, paper to be printed from the web, consisting of a horizontally-movable frame carrying rollers over which the paper is looped, of racks on said frame, spur-Wheels gearing into said racks and keyed at each end of a transverse shaft having its bearings in the machineframing, a third spur-Wheel on the transverse shaft, a rack for actuating` the latter spurwheel, a rotating cam for actuating the lastmentioned rack, and meansfor directing the Web a second time to the form for additional printing, substantially as shown and described.

V3. In an oscillating-cylinder printing-man` chine, the means for automatically and intermittently feeding the paper from the web,consisting of a horizontally-movable frame carrying rollers over which the paper is looped, racks on said frame, spur-Wheels gearing into said racks and keyed at each end of a transverse shaft having its bearings in the machine-framing, a third spur -Wheel on the transverse shaft, a rack for actuating the latter spur-Wheel and a rotating cam for actuating the last-mentioned rack, in combination with means for presenting the reverse side of the Web to the printing-forms, said means consisting of a round-edged bar, a roller, 4and asecondbar acting in conjunction to direct the Web rst transverselyof thema.-

chine, then in the same directionlas, and

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4. In anoscillating-cylinder printing-may chine for automatically and intermittently feeding from the web, the combination with feeding-in and feeding-ont rollers of ahorizontally-movable frame carrying rollers over which the web is looped, and a driving-belt looped over the feeding-rollers and over the rollers on the movable frame, substantially as and for the purpose set forth.

5. In an oscillating-cylinder printing-machine the combination with means for automatically and intermittently feeding the paper to be printed from the Welj, consisting of feeding-in and feeding-out rollers, a horizontally-movable frame carrying rollers over Which the web is looped, a driving-belt looped over the feeding-rollers and over the rollers on the movable frame, racks on said frame, spur-Wheels gearinginto said racks and keyed at each end of a transverse shaft having its 'bearings in the machine-framing, a third spur-wheel on the transverse shaft, a rack for actuating the latter spur-wheel, a rotating cam for actuating the last-mentioned rack, and means for presenting the reverse side of the web to the printing-forms, con-l

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