US752940A - Bell printing press - Google Patents

Description

PATENTED FEB. 23,1904.

H. A. W. WOOD. ROTARY PRINTING MACHINE.- APPLICATION FILED DEC. 15. 1893. RENEWED JULY 16,

4 SHEETS-SHEET 1'.

' no MODEL.

m: cams PATENTED FEB. 23, 1904.

H. A. W. WOOD.

. ROTARY PRINTING MACHINE. APPLICATION FILED-DBO. 15. 1893. RENEWED JULY 1a. 1903.

4 SHEETS-SHEET 2- N0 MODEL.

THE NORRIS PETERS c0. vuo'mivmn. wmducmm. a. c.

PATENTED PER 23', 1904.

H. A. W. WOOD. ROTARY PRINTING MACHINE.

APPLIOATION rIL'nn mm. 15. 1893. gmmwzn JULY 1a. 1903.

4 SHEETS-SHEET a.

H0 MODEL.-

lmi-l 'neoo ao ym m? No. 752,940. PATENTED FEB. 23, 1904. H. A. w. WOOD.

ROTARY PRINTIIIG MACHINE. APPLIOAIION FILED mm. 15. 1893. RENEWED JULY 16. 1903. 10 110mm). 4 sums-gum 4.

(UNITED STATES Patented February 23, 1904.

PATENT O FIC HENRY A. WISE 'VVOOD, OF NEW, YORK, N. Y., ASSIGNOR TO THE CAMP BELL PRINTING PRESS & MANUFAOTURINGOOMPANY, OF NEW YORK, -N. Y A CORPORATION OF NEW YORK..

ROTARY PRINTINGrNIACHI NE.

' SPECIFICATION forming part-of Letters Patent No. 752,940, dated February 23, 1904;

" A namaria December 15,is 9s. "'Rnwdhl '16, mp3; steam. 165,871. (No model.)

To all whom it may concern: y l I Be it known that I, HENRY A. Wren 7001), a citizen of the United States, residing at New York, in the county of New York and State of NewYork, have invented a new'and useful Improvement in Rotary Frinting-i/Iachines, of which the following is a specification. The aim of this invention isto improve the ordinary rotary web perfecting printingpress, so that diiferent lengths of sheets may be printed thereby and the rotary action of the printing members preserved, and, further,

to improve the various details of such a de- "3 mechanism which will allow the web to ad vance at the same peripheral speed as" the' vice, as hereinafter described.

To this end the invention consists of the arrangements hereinafter described and claimed, and the apparatus by which my invention may be practiced is illustrated in the accompanying four'sheets of drawings, in whieh Figural is a side elevation of a press arranged to work after my invention. Fig. 2 I is a sectional plan view taken on the line 2 2' of Fig. 1, illustrating part of, the gearing. Fig. 3 is a detail illustrating the change-gear ing used to change the lengthof the sheet. Fig. 4 is a sectional elevation of the various parts. Fig. 5 is a viewsimilar to Fig. 4:, illustrating a modification of the arrangements, Fig. 6 is a plan of the turner used in the de- 0 vice shown in Fig. Fig. '7 is a view similar to Fig. 4:, illustrating an attachment which can be used in connection with the device shown in Fig. 4, if so desired; and Figs. 8, 9,' and 10 are detail views of inafter referred to.

"Rotary presses and rotary perfecting- I presses as now arranged and used are the fastest presses in operation. Thisis due to the factthat'printing members can be rotated at 40 a much higher speed than they can be recip rocated; *For. this reason the rotary press is used when large'edit ions are desired in a short time; "but a rotary press as ordinarily. organized has the disadvantage that the length "of 4 5 sheet issuing from the press must be a constant The. width of the sheet, however, can be varied by varying the w'idthbf the web used and the width of theprinting-plates.

frames of a press. 'Mounted 'in these side the same to be here ink the printing-plate b. This inking device,

Webperfecting printirigpress, which shall be capable of printing different lengths of sheets, whichcan be determined by adjust ing the mechanism. vTo this end I combine with the rotary perfecting mechanism a feed printing-cylinder'for a length equal substantially to the printing-plate, but which will 5 withhold the web while the printing-plate is clear from the impression-cylinder.

Referring now to the drawings, wherein I have illustrated various apparatus for practie ing my invention, A represents the usual side frames in the usual manner are the printingcylinders B and E, and coacting with the same 'are the impression-cylinders O and D, so arranged as to form two rotary printing-con 75 ples. The printing-cylinders B and E are ar ranged in any of the usual ways, so that variable lengths of printing- plates 5 and 8 may be .placed on the same.

I: may use electrotype, zinc, stereotypepIates, or any other printing-surface.

A suitable inking mechanism is arranged to 7 if desired, may consist of form-rollers F F and distributor F and form-rollers F F and distributor F which form-rollers and dis-- tributers may be mounted in any of the usual ways, not necessary here to describe, and to which ink may be supplied in order that the printing i plate 6 may be inked. Cooperating with the printing-cylinder E to' ink the printing-plate e is' a similar inking device consisting of form-rollers F F and distributer F and form-rollers F F and dist-ributer F Thewebw is led into the press from any of the usual sources of supply, as from the webroll W in between the continuously-running feeding-in rollers 10, 11, and 12, then around the looping-roller 13, which is mounted in suitable blocks or bearings 14, arranged. in guideways in the main frames, and which looping roller is actuated from arms 16. From the looping-roller 13 the web passes around the roll 17 to the first impression-cylinder C. The web is printed on its first side between the impression-cylinder C and the printing-cylinder B. From the printing-cylinder B the web is led around the registeringroll 18, which may be mounted in suitable arms 19, vwhich arms 19 are keyed on the shaft 20. This shaft 20 is journaled in the main frames and has on one end a sector 21, with which meshes a worm 22, the shaft of which is arranged in a bracket 23 and on the end of which is a hand-wheel 24. Thus by turning the hand-wheel 24 proper register between the two printing-couples may be obtained and also the mechanism may be arranged for various lengths of sheets. From the registering-roll 18 the web is led around the roll or guide 25, then around the second impression-cylinder D, where the second side of the web will be printed by contact with the printing-plate c. From the second impression-cylinder D the web passes around the guide or roll 26 and then under the loopingroller 27. This looping-roller 27 is mounted in suitable boxes 28, arranged in guides 29 in the main frames, and the same is actuated by the arms 30, as hereinafter described. From the looping-roller 27 the web is led between the continuously-running delivery- rollers 31, 32, and 33, and is thereafter continuously delivered from the press to any suitable delivering, folding, "or further manipulating mechanism.

If desired, an offset-web may be used in connection with the second impression-cylinder D. This offset-web w may be led in from the web-roll W and follows the same course as the web w, except that from the roll 17 the offset-web is led up over the rolls 34 and 35 to unite with the web to again on the registering-roll, thus dodging or clearing the first printing mechanism. From the looping-roller 271or from the continuously-running deliveryrollers the offset-web may be led to a winding-roll 3'6 and may be wound up into a second roll, as W I The gearing for driving the various mechanisms so far described may be arranged as follows: On the shafts of the first printing and impression cylinders may be arranged the intermeshing gears 37 and 38, and on the shafts of the second impression-cylinder and second printing-cylinder may be arranged the and by this means the printing-couples can be turned in the proper direction. Engaging this gear 43 is a gear 45, which is mounted on ashaft 44, journaled in the main frames, as shown; Meshing with the gear 45 is a pinion 46, which is mounted on a shaft 47, which shaft 47 is journaled in the main frames and which may constitute the driving-shaft of the machine and which may carry suitable pulleys 49 and a fly-wheel 50 for this purpose. Theend of the shaft 44 has a key placed in the same, and fitting on the shaft 44 is an interchangeable gear and cam 50 and 51. From this interchangeable gear and cam the continuously-running feeding-in rollers and continuously-running delivery-rollers are driven, and from the interchangeable cam the loopingrollers are actuated. By this means by changing the cam and gear the length of the sheet printed may be changed, as hereinafter described. The interchangeable gear and cam may be held in place by a nut 520,,screwed on the end of the shaft 44.

52 represents a sweep, which carries on a stud secured therein an intermediate 53. The sweep has an extending curved arm 54, and by means of clamp 55 the sweep can be adjusted in any position around the shaft 57 as a center. Running on this shaft 57 is a gear 56, with which the intermediate 53 at all times meshes. By this means different gears can be placed on the shaft 44 and the sweep adjusted so as to give any desired speedto the gear 56. Turning with the gear 56 is a bevel-gear 58, which drives a bevel-pinion 59, secured to the parallel shaft, 60, which is mounted in brackets 61, 62, and 63, secured to one of the main frames, as shown. On the left-hand end of this shaft 60 is arranged a mitergear 64, which engages the miter-gear 65, mounted on the end of the vertical shaft 66, which shaft 66 is journaled in the bracket 63 and in a bracket 67. On the upper end of this vertical shaft is arranged a bevel-gear 68, which meshes with a bevel-gear 69, secured on the shaft of the feeding-in roller 11. The feeding-in rollers 10, 11, and 12 are geared together by means of suitable gears 70 71, &c., so that they will turn synchronously and in the proper direction. On the right-hand end of the shaft 60 is arranged a bevel-gear 72, which engages a bevel-gear 73, secured on the lower end of the vertical shaft 74, mounted in suitable brackets. On the upper end of this vertical shaft 74 is arranged a bevel-gear 75, which meshes with and drives bevel-gear 76, secured on the shaft of the roller 32. The rollers 31, 32, and 33 are geared together by means of suitable gearing, as 77 78, so as to turn syn chronously. By this means it will be seen that as the gear 50 is changed the speed of the continuously-running feeding-in and delivery rollers will be changed.

78 represents a shaft, on whichis mounted a T-shaped lever having arms '7 9, 80, and 81. The arm 79 thereof carries a stud 82, on which a 1 runs the roll 83, which roll 83 bears against the cam 51.

The arm 81 engages'the connection 16 to the looping-in roller 13, and a similar arm is arranged on the other side of the press flomshaft 78. 87 represents another shaft, on which is mounted the bell- crank lever 85 and 86, the arm 85 of which is connected by link Set to .the arm 80 of the other lever.

The. arm 86 connects by the link 30 to the looping feeding-out roller 27, and an arm similar to the. arm 86 is arranged on the shaft 87 on the other side. of the press. A spring 88 is arranged between the lever 80 and a fixed point 89, the tendency of which spring is to keep the roller 83 normally against the cam 51. .By this means it will be seen that as the f cam 51 is changedthe throw of the looping feeding-in and feeding-out rollers is changed,

The operation of'the'machine so far described is as follows: ,Theparticular arrangement illustrated is intended to represent a press c in which the printing-plates cover two-thirds of the printing cylinders approximately.

Then in this device theweb between the rollers 17 and .27 is arranged to run while the printing-plates are in contact with the impression-cylindersand to be withheld while they are not in printing contact with the impres SiOD-CI/lllldfilS, or, in other words, during one revolution of theprinting-couples the web will run at the, same speed as the peripheral speed of the printing-couples for two-thirds of a revolu tion and will be restrainedfor one-third of a d revolution.

In the particular cam illustrated the same has a one-third rise and a two-thirds descentthat is, theportionsof the cam to the ,right of the line a: w in Fig. Leis anincreasing 7 cam and the portion of the to the left of the lines a w is a decreasing cam. The cam is geared I as theprinting-couples. roll 13 to rise and the roll to descend for so as toturn thesamenumher of revolutions This will cause the thetwo-thirds revolution of the printingcouples and the roll 13 to descend and'the roll 27 to rise for the one-third" revolution of the printing-couples. Suppose now that in the particular arrangement shown the length -eof the web to be printed is twenty-four inches, or two-thirds of a cylinder ,Whose circumfen, 5o 7 In this particular arrangement the feeding-in ence is thirty-six inches, neglecting margins rollers and feeding-out rollers will be arranged to forward twenty-four inches fora complete revolution of the printing-couples. Then dur- 5 5 ing the printing movement of the couples, or

v forJtwo-thirds of a revolution, two-thirds of twenty;four incheaonsiXteen inches of web would be paid in by the. continuously-running feeding-in rollers and delivered out by the continuously-running,feeding out rollers. Also at the samevtime by the movement of the looping-rollers an additional eight inches will be supplied, so that the total amount of web passed through the printing mechanisms and feeding-in and feeding outrollers being so timed and proportioned that the movement of the web between the rollers 17 and 26 will correspond to the peripheral movement of the printing-couples. Then during the one-third revolution of the printing-couples when the printing-plates are not'in contact with the impression {cylinders the eight inches of web paid in by the continuously-running feeding-in rollers and the eight inches of web delivered out by the continuously-running delivery-rollers will be supplied and taken care of by the looping-rollers, which will thus be prepared for the next printing movement of the couples. Of course when the whole circumference of the printing-cylinders is covered with plates the web will run directly to'and from the impression-cylinders, omittingthe looping-rollers, the looping-rollers simply forming compensating devices; to withhold. the web when there is no printing-plate in engagement with the impression-cylinderaor another way that .the press can beused in the ordinary manner is to lead the web as shown. in the drawings and to simply render the looping devices inoperative, the continuously-runnirig feedingin and feeding out rollers being properly speeded. 4

In Fig.5 3 is represented a change-gear and cam for a three-fourth printing-plate or for a twenty-sevn-inch sheet, in this instance the portion ofthe cam tothe right. of the lines a; a beingone-fourth and the portion of the cam to'the left of the. lines a 00' being, threefourths and the gear 500 being properly pro portioned with the cam 510 so that thefeeding-in rollersand delivery-rollers will handle twenty-seven inches of web for a revolution of the "printing -c01,1ples.v *Thus by simply changing this'one piece. it-willbe seen that any desired length of sheet can be produced, and as the desired width of'sheet can be produced by varying the width of the web used it will be seen that this invention adapts the V rotary printing-press to universal use. Further, it will be seen that the speed due to the rotary action is preserved, as the adjustment does not affect the rotary movement of the printing-cylinders, they continuing in operaweb will be perfected, or, if desired, the web can be run directlyfrom on'e printing-couple to the other without perfecting, so, as to constitutea two-color press. In this particular 5 will be twenty-fourinches,thelooping rollers modification instead of using,continuously IIO running feeding-in and delivery rollers I use an intermittent feeding-in and an intermittent delivery device and adjust the action of the same so that the proper length of web will be fed forward during the printing action and so that the web will be held stationary in the printing-couples while the printing-plates are not in engagement with the impression-cylinders. Following the course of the web in this particular device it will be seen that the web is led from the roll W in between the rolls 103 and 105 to the feeding-in rolls 104. A set of tape rollers 106 and 107 are arranged to coact with the roll 105, so that tapes 108 can be used to keep the web tightly on the cylinder 104. From the cylinder 104 the web passes through the printing mechanism. From the printing mechanism the web is led around the delivery-cylinder 104 and out between the rollers and 117. Coacting with the cylinder 112 are a set-of tapes 116, which run around the tape- pulleys 113 and 114 and the roller 115. A loop is formed in the web between the two printing devices by means'of the rollers 109 and 111 and the registeringroll 110, whereby register and adjustment for the various lengths of sheets can be obtained between the two printing mechanisms. 118 represents a cam, which may be changed to suit the length of sheet desired, and in this particular modification the same is the only piece that has to be changed to vary the length of the sheet produced. 119 represents a rocking arm which is mounted on the shaft 120 and which carries a stud 121, on which a roll 122 is mounted, which roll engages the cam 118.

. This arm 119 actuates a connection 123, and a spring 124, connected to this arm and to a stationary part 125, is used to keep the roller 122 in proper engagementwith the cam-118., The connections from each end of this link 123 to the cylinders 104 and 112 are the same, and

each consists of a stud or shaft 128, on which engagement with the rolls the web will be -m'oVed forward from its source of supply to the delivery, and by properly proportioning the parts this speed can be made the same as the printing speed, and it further will be seen that when the increasing portion of the cam is in engagement with the roll 122 the web will remain stationary,.as any movement of the same does not tend to revolve the feeding-in and delivery cylinders. Thus by using different cams 118 and by properly proporas the printing couples run continuously in contact with the web the impression-cylinders might tend to tear or smut the web while the web is withheld, and this might be disadvantageous, especially in the case of the second impression-cylinder, which running in contact with the restrained web might tend to blur the first-printed side of the same. If I it is desired to remedy this matter, the device or attachment shown in the last sheet of the drawings could be used, and this attachment could be applied to either or both impressioncylinders, although I have only shown the same in connection with the second impression-cylinder to prevent offset. This attachment consists of a suitable device, as the two rolls or guides 150 and 151, which are mounted in frames 152 at each end of the printingcouple. These guides 150 and 151 are so arranged that when in their lowest position they will move the web, so that the same will just clear the impression-cylinder D, whereby as the impression-cylinder D continues its rotation the web remains stationary, and thus friction between the two is prevented. The guides 150 and 151 are also so arranged that whenin their highest position they will leave the web in proper relation to the printingcouple. The movement of these guides is very slight, and if the same produce too much tension on the web to actuate these guides or clearing devices at the proper time I mount the frames 152 on boxes 154, arranged on the shaft, of the impression-cylinder D, and

on boxes 157, arranged on the shaft 141 of the printing-cylinder E, the frames 152 having portions 153 and 156 to engage these boxes, and arranged in the upper portions 153 of the same may be springs 155, which tend to keep the guides and 151 normally in their uppermost positions. On the lower end of the frames are mounted rollers 158. Engaging these rollers 158 are double cams 159 and 161. The cams 159 are keyed to the shaft 141 by means of keys 160; but the cams 161 are free to revolve on the shafts. The

cams 161 have a circular slot 163 out 'in' the same, and projecting through this slot from cams are studs 160, on whichare tapped nuts 162. The cams'159 have shoulders 165, which lower the guides 150 and 151, and the cams 161 have shoulders 164, which raise said guides. The shoulders 164'and 165 can be arranged to form a cam of the proper length relatively to the printing-plate, so that the rollers 1'50 and 151 will properly act for different lengths of sheets. Of course the offset-web can be used in the printing device even if this web-clearing device is used, and the same isindicated in dotted lines in this particular figure, and of course, if the offsetweb is used the description above would be modified, wherein it is stated that the web to:

" be printed would be blurred by contact with the second impression-cylinder. This ar-' ohanic without departing from 'the scope of couples, arranged to advance the web to and pull the same through said couples during the printing periods, and to withhold the web the printing-couples for each rotation thereof:

may be varied, whereby by adjusting said rangement constitutes a simple and improved device for preventing oifse't or smut'of the web andals'o for preventing the continuous: rotation of the impression-cylindersfrom affecti'ng the web.

It will be see n that my invention is capa-i ble of applicationto many variousforms of presses, and I do not wish to be limited to the particular dev'ice her'ein shown," as the same may be greatly varied by a skilled memy invention as expressed in the claims.

Having thus fully-described my invention,- "what Iclaim, and desire to: secure by Letters "Patent, i's

1. The combination in a web-printing press, of two printing=couples, each comprising a cone tinuously -rotating impression cylinder and printing cylinder; said printing-cylinders be ing adapted to carry plates thereon,'so that the same will make impressions for only a part of their rotations, a web rnanipulating mechanism independent of the printingwhen the printing-cylinders are not printing, and means for adjusting the action of said web manipulating .mechanism, so that the length of web advanced to and pulled through sion on the web for a partof the rotationof ing the web during the printing period, and means for adjustingithe action of the feeding in, the feeding-out and the compensating de-' vices so that variable lengths of sheets can be the printing-cylinders,means for continuously feeding the web into and out of the press, a compensating device for withholding the web during the non-printing period, and advanc printed on the web.

3. The combination in a web-printing press a of two printing-couples, each comprising a rotatlng impresslon cylinder and a rotating prlnting-cylmder adapted to make an impression on the web for part of a revolution of the printing-cylinders, devices for continuously feeding the web into and out of the press, and compensating devices as two loopers arranged in the path of the web so that the web will be advanced through the printing mechanisms substantially only while an impression is being made.

4. The combination in a web-printing press the printing-cylinders, devices for continuously' feeding the web into and out of the press,

compensating devices as two looping-rollers adapted to permit the advance of the web through the printing mechanism only while an impression is being made, and means for adjusting the action'of the feeding-in and feed- 'ing-out devices, and the compensating device so that variable lengths'of sheet may;be' per- 'fected,

5. The combination in a web-printing press of a printing-couple comprisinga' rotating impressioncylinder and a rotating printing-cylinder-adapted to make an impression on the web for-part of a revolution of the printing- "f cylinders, continuously-running rollers for" feeding the web into the press,-' a continuously-iacting manipulating device consisting 'of two'looping-rollers adapted to loop the web before and after the same passes to the'printing mechanism, a change-gearingfor operat-" ting the continuously-running feeding-in'rollers, "and a change-cam for actuating the loop ing-rollers whereby variable lengths of sheet can be printed. Y

, (ii The combination'ina web-printing mechanism of two printing-couples each comprising a continuously-rotating impressiomcylinder and a continuously rotating printing-cylinder adapted to make an impression on the web for part of a revolution of the printingcylinder, witha continuously-acting feedingin device and feeding-out device for the web, a looping-roller arranged in the path of the web between the feeding-in device and the first printing-couple, a looping-roller arranged inthe path of the web between the second printing-couple and the delivery devicefa change gearing for adjusting 'thespeed of the feeding-in and feeding-out devices, and a change-cam. for actuating the looping-rollers, whereby variable lengths 'of sheet can be printed.

7. The combination in a printing-press of a rotary printing mechanism adapted to print variable lengths of sheets, continuously-running feeding-in and delivery rollers adaptedto continuously feed the web into and out of the press, gearing whereby the continuously feeding-in and feeding-out rollers are driven from a common change-gear, a looping-roller arranged in the path of the web between the feeding-in rollersand the printing mechanism, a feeding-out looping-roller arranged in the path of theweb between the printing mechanism and the delivery -rollers, connections whereby the two looping-rollers are actuated from a common change-cam, and change cams and'gears, whereby variable lengths of sheet can be printed.

8. The combination in a web-printing press piece comprising a combined cam and gear the sheets, substantially as described.

9. The combination in a web-printing press of two rotary printing-couples adapted to which may be changed to vary the length of v make an impression for part of a revolution 1 upon a Web, a web-manipulating device adapted to permit the advance of the Web through the printing mechanisms only while an im-: pression is being made, and an offset-web led through the web-manipulating device, so as to clear the first printing-cylinder and running with the web to be printed, so as to prevent oifset on the second impression-cylinder.

10. The combination in a web-printing press of two rotary printing-couples each compr'ising a continuously-rotating impression-cylini der and a continuously-rotating printing-cylf inder adapted to make an impression on the web for part of a revolution thereof, a feeding-in device and a feeding-out device for the web and a compensating device adapted to v manipulate the web so that the same will ad- 1 vance through the printing mechanism substantially only while the impression is being. made, an offset-web also led through the press, so as to clear the first printing-cylinder and controlled by the feeding-in and feeding-out devices and the compensating device so as to I prevent oifset on the web to be printed from I the second impression-cylinder.

11. The combination in a web-printing press of two printing-couples, each comprising a,

continuously rotating impression cylinder 1 and a continuously-rotating printing-cylinder 1 adapted to make an impression on the web for 1 part of a revolution thereof, with a web-manipulating device adapted to permit the advance of the web through the printing mechanisms substantially only while an impres-lv sion is being made, means for adjusting the webmanipulating device so that various lengths of sheets can be printed, and an ofl:'- with means for moving the web clear of the impression-cylinder while no impression is set-web led through the printing-press so as to clear the first printing-couple and so as to i prevent contact of the web to be printed with i the second impression-cylinder, the offset-web being led through and controlled by the webmanipulating device for the Web to be printed. 12. The combination in a web-printing press of two printing-couples, each comprising a continuously rotating impression cylinder and a continuously-rotating printing-cylinder prevent offset of the web on the second impression cylinder, said offset web being led to clear the first printing-cylinder.

13. The combination in a web-printing press of a printing-couple consisting of a rotary impression-cylinder and printing-cylinder adapted to make an impression for part of a revolution, with means for moving the web clear of the impression-cylinder while no impression is being taken.

14. The combination in a web-printing press f of a printing-couple consisting of a rotating impression cylinder and printing cylinder adapted to-make an impression on the web for part ofa revolution, a web-guiding device for leading the web around the impression-cylinder, and means for moving this guiding deviceso that the web will be in contact with the impression-cylinder only while the impression is being made.

15. The combination in a web-printing press of a rotary impression cylinder, a printingcylinder adapted to make an impression for part of a revolution, guides mounted on each side of the impression-cylinder in frames, and means for moving these frames so that the guides will allow the web to come in contact with the impression cylinder only while the impression is being made.

l6. The combination in a printing-press of the rotating impression-cylinder and rotating printing-cylinder, the frames carrying a guide at each side of the impression cylinder, and cams for actuating these frames so that the web will be allowed to come in contact with the impression-cylinder only while the impression is being made.

being made, and means for adjusting or regulating this movement to correspond with the printing-plate used on the printing-cylinder.

18. The combination in a web-printing machine of a printing-couple consisting of a rotating impression cylinder and a rotating j printing-cylinder adapted to'make an impression for part of a revolution, with frames at each side of the printing-couple carrying a device adapted to move the web clear of the impression-cylinder while no impression is being made, and cams for actuating these frames.

19. The combination ina printing-press ofa printing-couple consisting of a rotating impression-cylinder and a rotating printing-cylinder adapted to make an impression during part of a revolution, with frames mounted on the axles of the printingcouple carrying a device adapted to move the web clear of the impression-cylinder while no impression is being made, and adjustable means for moving these frames.

20. The combination in a printin -press, of a rotating impression-cylinder and a rotating printing-cylinder adapted to make an impression on the web for part of a revolution, with means for varying the length of the sheet printed by the couple, and means for lifting the web clear of the impression-cylinder while no impression is being made, consisting of frames carrying clearing devices as two guides, and adjustable means as double cams for controlling the movement of the frames to correspond with the length of sheet printed.

21. The combination in aprinting-press of a rotating printing-couple with means for varying the length of sheets printed by the rying the length of the sheets printed by the couple, and a web-clearing device consisting of frames mounted at each side of the couple, carryingaclearing' device as two guides, these frames being mounted substantially on the shafts of the printing-couple, and double adjustable cams mounted on one of these shafts,

wherebythe action of the clearing device can be adjustedto suit the length of sheet printed.

In testimony whereof I have hereunto set my hand in the presence of two subscribing H. A. WISE WOOD.

' Witnesses.

Witnesses:

JAMEs J. MGGRATH, JoHN J. MURRAY.

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