US1492189A

US1492189A - Delivery mechanism for printing machines

Info

Publication number: US1492189A
Application number: US491148A
Authority: US
Inventors: Aitchison Peter
Original assignee: American Bank Note Co
Current assignee: American Bank Note Co
Priority date: 1921-08-10
Filing date: 1921-08-10
Publication date: 1924-04-29
Anticipated expiration: 1941-04-29

Description

A ril 29,1924.

P. AITCHISON DELIVERY MECHANISM FOR PRINTING mcmuss Original Filed Aug. 10.

1921 2 Sheets-Sheet 1 A ril 29, 1924. 1,492,189

P. AITCHISON DELIVERY MECHANISM FUR PRINTING MACHINES Original Filed Aug. 10.1921 2 Sheets-Sheet 2 an 2 21 In ventor: by Umu(f/fi%fiy New Rochelle, in the county of Westchester etented Apr. 29, 1924.

UNITED STATES,

PATENT OFFICE.

PETER AI'ICHISON, OF NEW ROCHELLE, NEW YORK, ASSIGNOB T0 AMERICAN BANK NOTE COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

DEIIIVEBY MECHANISM FOR PRINTING MACHINES.

Application filed August 10, 1921,8eria1 No. 491,1. Renewed September 35, 1928.

To all whom it may concern:

Be it known that I, PETER ArrcmsoN, a subject of the King of the United Kingdom of Great Britain and Ireland, residing at and State of New York, have invented certain new and useful Improvements in Delivery Mechanisms for Printing Machines, of which the following is a specification,

reference being had therein to the accomthe f panying drawings, which form a part thereof.

My invention relates to delivery mechanisms for printing machines, and more particularl to a type thereof heretofore invented y me wherein the printed sheets are received by material so coated as to prevent offsetting thereon of the ink from the printed sheet.

Such mechanisms are particularly adapted for use in connection with machines used for making impressions upon dampened paper, such as steel plate machines, one characteristic of this type of delivery mechanism being the exclusion of air from the printed sheets in a manner to preserve the moisture therein, so as to avoid the necessity for a repeated dampening or wetting of the paper, and the possibility of a loss of re ister of succeeding impressions as a resu t of variances in the size of the sheets due to varying shrinkage due to different degrees of saturation upon succeeding Wetting or dampening operations.

The strip or web ultimately receiving theprinted sheet is finished or treated as by coating or impregnation, with cerasin wax, J a anese wax, paraflin, or other similar material, which fills the pores of the paper of the strip or web so as to make it non-impervious to moisture and air, and at the same time to present a surface to the printedksheets which will have no aflinity for the in The delivery mechanism of my present invention is so constructed as to feed the oiled or waxed strip in a manner to keep it substantially flat and under a gentle continuing pressure without likelihood of the tearing of the strip in a manner to interrupt the operation of the delivery mechanism, and hence of the press itself.

Another characteristic of the invention is the 'eeuoiployment of a structure by which ing movement of the strip or web ing couple. In securm this result, it 1s not w on y necessary to win the strip with the printed sheets within the roll, by an intermittent application of ower to the roll, but to vary the R. P. of the roll with the increase of diameter thereof, so as to ensure uniformity in the rate of traverse of the strip or web throughout the entire length thereof, irrespective of the gradual increase of the diameter of the roll.

To adapt the delivery mechanism to printed sheets of different lengths, without waste in the strip or web, the machine is so construeted that the quantity of strip or web fed with each cycle of operations of the printing couple may be increased or reduced with a constant speed of said printing couple, this adjustment of the delivery mechanism to accommodate it to sheets of different lengths, not modifying in any way the capacity output of the printing couple.

Another characteristic of the invention is the provision of *means whereby the strip or web will be relieved from all tensioning stresses upon or about the supply reel, by a positive mechanical unwinding action of said reel, simultaneously with the actuation ofthe rewind reel and to substantially the same extent, the actuating means for the mechanisms operative upon said supplyreel and said rewind reel, being so connected and combined as to ensure approximate uniformity in the operative effect of each.

To overcome mechanical difliculties in securing exactitude in the unwinding of the strip or web from the supply reel, and the winding of same upon t e rewind reel, I provide a compensating mechanism operative upon the strip or web intermediate these .reels, which is automatically operative to up by t e rewind reel, or to supply slack if the conditions be the reverse of that referred to.

The construction of a'delivery mechanism termittently rotatin said reel, a supply reel for a continuous strip or web of paper, sur' faced with material having no aflinity for printing ink and impervious to air or moisture, means whereby said supply reel is intermittently rotated to unwind said strip or web therefrom, guides intermediate said reels, a printing couple, and means for conveying a printed sheet of paper from adjacent said printing couple and delivering it to said web or strip adjacent said rewinding reel; and in such other novel features of construction and combination of parts as are hereinafter set forth and described, and.

more particularly pointed out in the claims hereto appended.

Referring to the drawings,

Fig. 1 is a side elevation of a delivery mechanism embodying my invention, and the associated parts of a printing machine co-operating therewith;

Fig. 2 is an end view partly broken away, taken at the left of Fig. 1;

Fig. 3 is a detail view of the throwofi' mechanism as to those parts thereof ensurin simultaneous stoppage of the impression cy inder or D-roll, and the mechanism actuating the supply and rewind reels;

Fig. 4 is a detail View of the mechanism employed to vary the R. P. M. of the rewind reel to substantially equalize the rate of traverse of the web; and

Fig. 5 is a detail view of the driving gear operative upon said rewind reel.

Like numerals refer to like parts throughout the several views.

In the accompanying drawings, I have shown a form or plate cylinder 10 having associated therewit an impression cylinder or D-roll 11, driven therefrom in the usual and well known manner. The details of construction of the inking and wiping mechanism and of the actuating means for said printing couple, are not shown in the accompanying drawings, as such are immaterial to the present invention.

Associated with said printing couple is a feed mechanism 12 and its actuating mechanism 13 receiving power from the oscillatory lever 14 and cams 15 upon the shaft of the form or plate cylinder. Since this feed mechanism is immaterial to the present invention, the details thereof are omitted from the drawings.

Associated with the printing couple 10- 11 is a rewind reel 16 and a supply reel 17 for a continuous strip or web 18 ofpaper or other similar material saturated, impregnated or coated with wax or other substantially non-absorptive material, making it substantially waterproof and air-tight and imparting to it a finish having no afiinity for theprinting inks. This strip or web, in the operation of the mechanism, is unwound from the reel 17 and wound upon the reel 16, the dampened, printed sheets beingdelivered thereto during its progress from the former reel to the latter so that such sheets will be wound within the roll upon the reel 16 and thus be stored in a manner to prevent the evaporation of the damping fluid in the paper and avoid'oflfsetting of the ink upon said strip or web- Intermediate the

reels

16 and 17 are

fixeo guide rollers

19 and 20 and a movable take up roller 21 disposed between said rollers,

said

guide rollers

19 and 20 serving to hold the strip or web perfectly flat to avoid the formation of creases therein, while the roller 21 will compensate for irregularities in the traverse of the strip or web due to any variance in the rate of traverse of said strip or web adjacent the rewind reel and adjacent the supply reel.

The compensating takeup roller 21 is mounted in suitable slotted guides 22, the slots of which are of suflicient length to permit adequate feed of the strip or web by the rewind reel 16, even though there be a complete momentary failure in the functioning of the mechanism operative upon the supply reel 17.

The compensating takeup roller 21 will also serve to ensure uniform tensioning ressure upon the strip or web independent y of the action of the reel 17, and will also assist in keeping the strip or web perfectly flat.

Owing to the absence of any reat tensile strength in said strip or web, t e roller 21 will serve to minimize likelihood of any tearing of the strip or web by reason of the development of stresses through a mo- 7 mentary lack of coordination of the

reels

16 and 17;

Carried by the rewind reel 16 at opposite ends thereof are

friction discs

23 and 24 adapted to seat upon the groove wheels 25 and 26 upon one side of the machine, and 27 and 28 upon the other side of the machine, respectively, thus permitting notonly the desired rotation of said reel through the friction wheels and discs above specified, but also the convenient mounting and dismounting of the reel with relation to said driving wheels, which is required when placing an empty reel in the machine or removing a filled reel therefrom.

Also carried adjacent either or both ends of the reel 16 is a brake drum and its assotoo ciated hand brake 29, which prevents any tendency of the overrunning of said reel 16.

Carried by the friction wheels and 26 respectively are gears 30 and 31 meshing with an intermittently rotated gear 32 actuated through the medium of the ratchet gear 33 carried thereby and a weighted pawl or dog 34 pivotally mounted upon a swing arm 35 receiving oscillatory movement through the connecting rod 36, one end of which is pivotally connected with said swing arm and the other end of which is pivotally connected with one arm 37 of a bell crank lever, the other arm 38 of which lever is connected witha crank 39 upon the shaft of the sprocket wheel 40, which latter is continuously rotated in synchronism with the rotation of the form or plate cylinder 10.

The supply reel 17 is mounted in a slotted bearing 41 and has associated therewith two friction drums 42 and 43 upon which said reel 17 rests, the slotted bearing 41 permitting said reel to gradually descend as the strip or web is unwound therefrom so as to maintain the desired frictional engagement between same and said drums. The shafts of the drums 42 and 43 have mounted thereon spur gears 44 and 45 respectively which are in mesh with the driving gear 46, the shaft of which has the

bell crank lever

37 and 38 loosely mounted thereon so as to permit the actuation of the driving mechanism for the supply reel through the same chain of mechanisms as the rewind reel 16. The car 46 .is intermittently actuated from said ell crank lever through the medium of the weighted pawl 47 carried by the arm 38, and a co-operating ratchet wheel 48 carried by said gear. By the construction de scribed, the supply reel and the rewind reel will be simultaneously actuated, means being provided, however, whereby the gradual increase in the diameter of the roll upon the reel 16 will be compensated for, the application of driving power to the reel 16 through the medium of the strip or web 18 mounted thereon not being desirable owin to a gradual increase in the weight of this roll, and a tendency to smut the printed sheets at times.

The pitman 39 is adjustably connected with the crank arm 49 carried by the shaft of the sprocket wheel 40 so as to permit the desired variation in the quantityof feed of the strip or web 18 with each rotation of said gear, thus permitting the machine to b set so as to collect printed sheets of different lengths, and still have them closely juxtaposed upon the strip or webcas it is wound upon the reel 16.

The wheel 40 is continuously rotated by means of the gear 50 upon the plate or form cylinder 10, and by an intermeshing gear upon the shaft 51 or 52, as the case may be, said shafts respectively carrying the sprocket wheels 53 and 54 over which the chain 55 passes. The shaft 51 carries a gear.

56 while the shaft 52 carries a gear 57, said gears being adapted to be selectively entrained with the gear 50 through the medium of the gear 58, so as to adapt this mechanism for use with either one or two plates upon said cylinder 10. This adjustability is secured by mounting the shafts 51 and 52 upon an oscillatory frame 59 mounted to have movement about the pivot 60 so that either gear 56 or 57 may be enmeshed with said gear 58. To prevent slack being formed in the chains through the oscillation of the frame 59, I mount upon said frame a takeup sprocket wheel 61. The purpose of the above mechanism is merely to permit the same delivery mechanism to be used whether one or two plates are mounted upon the cylinder 10, so as to increase the traverse of the strip or web 18 when two impressions are made with each rotationof the cylinder 10, and to have the feed approximately one-half the former amount when only one impression is so made. The chain and sprocket mechanism 62 has no operative effect upon the delivery mechanism, it being a drive associated with the paper feed mechanism.

The compensating feature of the driving mechanism for the reel 16 in the form of the invention shown, comprises a swing frame 63 carrying a shield plate 64 adapted to partially encircle the periphery of the ratchet wheel 33 and thus control the operative re lation between said ratchet wheel and its cooperating pawl 34, means being provided whereby said frame and said shield will be progressively advanced in the direction of rotation of said ratchet wheel and in approximate proportion to the increase of the diameter of the roll upon the reel 16 so as to gradually decrease the rotative movement imparted to said reel through the medium of said pawl, and thus substantially equalize the rate of traverse of the strip or web 18 notwithstanding the increase of the diameter of the roll upon said reel. The frame 63 is loosely mounted upon the bearing for the gear 32.

-The swing frame 63 is slotted as shown and has mounted thereon, by means of said slot, a screw-threaded travelling fitting 65 having mounted therein a feed screw 66 carrying a star wheel 67 adjacent the friction wheel 26, the teeth thereof projecting into the path of movement of a 'tappet 68 carried by said friction wheel. The screw 66 is mounted in bearings 69 supported from the end of the bearing for said wheel 26.

By the construction described, the shield 64 will be gradually and progressively advanced with each rotation of the wheel 26 so as to gradually prevent the engagement of the pawl 34 with succeeding teeth of the ratchet wheel 33, and thus limit the rotative movement of said ratchet wheel with a gradually continuing reduction in the uantity of rotary movement of the rec 16. While the mechanism described does not secure a Mpositive and regular decrease in the R. P. of the reel 16, nevertheless by using fine ratceht teeth and properly proportioning the leverage of action of the screw 66 upon the frame 63, fairly satisfactory results are obtained, the loop adjacent the takeup roller 21 compensating for that lack of precision present in the mechanism shown.

Since the manner of driving the supply reel 17 is by direct frictional contact with the friction rollers 42 with the surface of the strip or web upon said reel, it is apparent that the peripheral traverse of said reel will be constant so that no such mechanism as that immediately above referred to, is required in connection with said supply reel.

Acting upon the friction drums 42 and 43 of each pair is a friction disc and band 70 for preventing overrunning of the supply reel. The

brake mechanisms

29 and 70 are provided because of the intermittent action of the

reels

16 and 17 and the frequency with which said reels are actuated, which would have a tendency to interfere with the feed of the strip or web 18, were not some retard device provided, since the

gears

32 and 46 are free to rotate independently of the actuating means therefor.

The printed sheets are discharged upon the reach of the strip or web 18 adjacent the rewind reel 16 by a, mechanism which is old and well known in the art. This mechanism comprises a gripper cylinder 71 driven from the gear 50 upon the form or plate cylinder. A series of tapes 72 pass about this grip-per cylinder and about the guide rollers 74 and Y75. Adjacent the guide roller 75 is a roller 76 driven by the sprocket chain 77 from a sprocket wheel 73, driven from the ear wheel 50 while adjacent the guide roller 20 is a roller 78 about which, and the roller 76, pass delivery tapes 7 9. Passing about rollers 80, 81. 82 and 75 are continuous tapes 83, one reach of which passes over the roller 75 engaging reaches of the tapes 72 .and 79 respectively so as to grasp the printing sheets delivered therebetween by the gripper cylinder 71. The rollers 78 and 80 terminate adjacent andabove' the guide roller 20 for the strip or web 18 so that the printed sheets are conveyed from adjacent the form or plate cylinder 10 and discharged upon the portion of the strip or web 18 intermediate the roller 20 and the reel 16.

. The impression cylinder or D-roll 11 is p actuated by' means of a gear wheel 84 connected with the shaft thereof by means of a slide clutch 85 which is adapted to be actuated by means of the lever 86 having pivotallyconnected therewith the rod 87 actuated by-means of a pinion 88 meshing with the rack teeth 89 upon said rod. The crank arm 90 actuating said pinion is conveniently accessible to the feeder, so as to permit the stoppage of the impression cylinder in the event of the failure to properly feed .a sheet to the printing couple, or during the makeready to ensure the pro er ink ing of the plates before the initia rinting operation. When the clutch 85 1s actuated, the form or plate cylinder 10 continues to rotate so that it is desirable to provide means operatively connected, and acting in synchronism, with said clutch, so as to stop'the feed of the strip or web 18 simultaneously with the stoppage of the im pression cylinder or D-roll.

- Pivotally mounted adjacent the ratchet wheel 48 is a releasing lever 91 curved to conform to the arc of movement of the pawl 47 and extending throu bout the maximum range of movement 0 said pawl, so that by actuating said releasing lever, the

pawl may be instantly disengaged from the ratchet wheel 48, irrespective of the immediate position of said pawl. The actuating means for said lever 91 is a lift arm 92 which is operatively connected with the clutch member 85 through the crank and link mechanism 93, so as to cause said pawl to become inoperative substantially simultaneously with the disengagement of the impression cylinder or D-roll from its driving gear.

Pivotally mounted adjacent the gear wheel 32 is a similar release lever 94 adapted to operate in the same manner as that heretofore described in connection with the lever 91 but with relation to the pawl 34. This lever 94 is acted upon through the medium of one arm of a double crank lever 95, the other arm of which is connected by the link 96 with the oscillatory plate 97 carrying the lift arm 92. By thus connecting the actuating means for the release levers 91 and. 94 with the throwofi' mechanism of the printing couple, stoppage of the feed of the strip or Web 18 and its being' rewound upon the reel 16 will occur simultaneously with this throwoff.

The lever 94 is ivoted on a frame 98 carried by one of te standards 99 at 100.

The operation of the herein described mechanism is substantially as follows When the cylinder 10 carries two plates,

so as to make two impressions with each revolution of the cylinder, the relation of parts will be as shown in the accompanymg drawings. Under this condition it is apparent that the length of the strip or web 18 fed with each revolution of the cylinder 10 must be sufiicient to receive two printed sheets. Ordinarily in under-surface printing the length of the plates will approximate 90 of the are of the circumference of the form or late cylinder, so that since the diameter of the wheel 40 is aipproximately one-half of the gear 50 upon t e form or plate cylinder, and since the ratio of the gears 56 and 58 is such as to ensure the same peripheral speed in the wheel 40 and gear 50, it is apparent that the strip or web 18 will receive two feedin impulses with each revolution of the cy inder 10 at intervals timed with relation to the printing interval, the dwell afforded by the crank and pitman connection between the wheel 40 and the actuating mechanisms for the supply and the rewind reels compensatin for the intervals between impremions and the spaces between succeeding printed sheets conveyed to the web or strip by the delivery ta es.

With this set 0 the machine, power will be transmitted through the chain 55, sprocket wheel 53 upon the shaft 51, by the gears 56 and 58, any reduction in the speed of actuation of the strip or web feeding mechanism as compared with the peripheral speed of the cylinder 10 being secured by the adjustment of the pitman 39 with relation to the crank 49, and intermittent feeding impulses being secured by the crank and pitman mechanism.

As the wheel 40 is rotated through the said chain 55, the bell crank lever 37-38 will be oscillated through the pitman 39 and will impart a similar oscillatory movement to the swing arm 35 connected therewith by the link 36.

\Vith the movement of the arm 38 to the left (Fig. 1) the pawl 47 through its engagement with the ratchet wheel 48 will impart a limited rotary movement to the gear 46 and through said gear and the gears 44 and 45 to the friction drums 42 and 43 acting upon the supply reel 17. In this manner the strip or web 18 will be unwound fromthe reel 17 at a uniform rate irrespective of the gradual reduction of diameter of the strip or web upon said reel, the slotted bearing 41 permitting the reel to descend so as to maintain the engagement of said drums and the supply reel notwithstanding the radual decreases in the diameter of the reel.

The slack thus fed from the supply reel 17 will be taken up by the rotary movement imparted to the rewind reel 16 through the pawl 34, the ratchet wheel 33, the

gears

32, 30 and 31', and the friction wheels 25 and 26 co-operating with the friction disc 23 upon said rewind reel, any dissimilarity in the quantity of the strip or web fed from the reel 17, and the quantity rewound upon the reel 16 being compensated for by the elevation or descent of the compensating roller 21 in its slotted frame 22. This feeding move- -m ent will occur only while the crank 49 is passing through the lower 180 of its cycle, the remaining 180 of this are of movement effecting a return movement of the pawls 47 and 34 with relation to their respective ratchets without feeding stri or web.

e guides 19 and 20 will hold the strip or web flat during its course through the machine, the roller 21 assisting in securing this result, and at the same time placing every portion of the web between the

reels

16 and 17 under constant tension, the load of this roller being insufficient to apply any substantial breaking or tearing stresses to the strip or web. Furthermore, the freedom of the roller 21 to rise and fall by a substantially vertical movement, will permit, if occasion should demand, a tem orary full feeding movement forward of t e strip or web even though there be a partial failure of the supply reel to be properly rotated by its actuating mechanism. y

The pressure developed by the roller 21, or the drag upon the strip or web resultin from the load of this roller, will place a su ficient stress between the unwound portion of the strip or web and the wound portion thereof at the rewind reel 16 to ensure the expression of air from between the succeeding plies of the roll of the strip or web upon said rewind reel and thus tend to exclude air from the rinted sheets while within the roll, and avold material loss of moisture in the printed strip as a result of evaporation. This gentle pressure will also cause an intimate contact between the printed face of each sheet of pa er and the surface of the strip or web wit which the inked surface contacts, which will facilitate the removal of the sheets from the roll of strip or web by a separate mechanism which forms no part of t e present invention, but is used in conjunction therewith.

The relation of the guide roller 20 and the lower periphery of the roll of strip or web upon the reel 16 will cause the portion of said strip or web intermediate said guide roller and said roll to be on an incline so that each sheet as it is delivered to said portion of the strip or web from between the adjacent reaches of the tapes 83 and 79, will pass freely along the inclined ortion of the strip or web thus provided irrespective of the feeding interval of said web.

When the adjustment of parts is such as shown in Fig. 1, the feeding interval of the strip or web may be coincident with the travel of the sheet as it is delivered thereto. When a single printing late is used' on a machine, however, the re ative variance in the rate of traverse of the printed sheet and of the strip or web will make the relative feeding interval a matter of indifference.

movement of the Even when two plates are used upon the afforded by the intermittent actuation of the strip or web supply reel and the rewind reel is to afford a dwell in the feed of the strip or web so that, notwithstanding this in the roll u spacing of the printed sheets upon the dehvery mechanism, they will be positioned in fairly close proximity to each other when delivered to the strip or web, and as wound n the reel 16.

Plates of ifi'erent sizes for printing upon sheets of difl'erent length are frequently used upon the same ress, the adjustabilit of the pitman 39 wit relation to the cran 49 being for the purpose of varying the quantity of feed of the strip or web with each rotation of the wheel 40 so as to secure the desired closeness in the positioning of succeeding sheets upon said strip or we irrespective of variance in the length of the sheets during different runs of the press.

The hand brake mechanisms 29 and are merely for the purpose of preventing possible excess movement of the friction cylinders 42 and 43 and of the friction disc 23 with a resultant loss of uniformity in the quantity of strip or web fed through the machine .at each actuation of the driving means for the res ective reels.

When but one p ate is used upon the cylinder 10, the frame 59 is lowered, thus disengaging the gear 56 from, and engaging the gear 57 with, the intermediate gear 58.

Since the gear 57 is twice the diameter of the gear 56, and the sprocket wheel 54 is of the same diameter as the sprocket wheel 53, this adjustment will reduce the lineal traverse of the chain 55 and the peripheral traverse of the wheel 40 to one-half of that of the former adjustment. The takeup sprocket 61 will prevent creation of slack in the chain 55 by the downward movement of the frame 59 and of the sprocket wheel 53.

With each rotation of the friction wheel 26, the tappet 68 carried thereby will engage a tooth upon the star wheel 67 and impart a partial rotation thereto with a ,resultant actuation of the feed screw 66 and a downward movement of the swing frame 65. This downward movement of said frame will gradually advance the shield 64 in the direction of the feeding movement of the pawl 34 so that with the progressive advance of said shield said pawl will ride thereon during a portion of this feeding movement, and thus be held out of engagement with the teeth of the co-operating ratchet wheel 33 so as to gradually reduce the feeding movement imparted to the gear wheel 32 with each actuation of the swing arms 35 resulting in a gradual reduction in' The dwell diameter of the roll of strip or web 18 thereon.

When the'impression cylinder or D-roll 11 is thrown out by the actuation of the rack bar 8'. and the clutch 85, the link and lever mechanism 93 will, throu h the release arms 92 and the bell cran lever 95, oscillate the releasing

lever

91 and 94 re spectively so as to disengage the pawls 47 and 34 from their co-operating ratchet wheels irrespective of the position of said pawls at the time of the actuation of said levers. Normally the weighed heels of said pawl will move in close proximit to the adjacent edge of said levers, w ich are formed in an arc concentric with the arc of movement of said pawl. When the levers are rocked, however, this edge becomes concentric to, and is positioned within, the arc of movement of the heels of said pawls. and thus holds the pawls out of engagement or disengagement from the ratchet wheel.

The manner of connecting the double crank lever 95 and the frame 97 ensures simultaneous release of both pawls.

The stoppage of the printing couple will not efiect the feeding movement of the delivery tapes, but will stop the making of impressions, thus leaving a relatively long gap between the printed sheets upon said tapes. This would result in waste of the strip" 0r web 18 were not some means .provided to cause the number of feeding impulses operative upon said strip or web to coincide with the number of impressions actually made.

The mechanism described is conveniently accessible to the feeder, and it is ordinarily used only when, by some mishap, there has been a failure to feed a sheet to the printing couple, and its functioning as to the strip or web feeding mechanism is of importance only under this condition.

If by the continued delivery of sheets to the strip or web 18 by the delivery tapes. there is a tendency of these sheets to accumulate upon this strip or web, they should be removed by hand so as to be fed. to the roll to fill the gaps occasioned by the lapse of feeding of sheets to the couple.

The ink upon the printed sheets will have an opportunity to partially oxidize or dry before delivery to the roll of strip or web 18, although the character of the strip or web will prevent offsetting of the partially dried ink thereon. The side of the sheet bearing the impression will be delivered face upward upon the strip or web so that there will be no rubbing action as a resultof relative movement of the sheet and the strip or web.

The detailed construction of the various mechanisms herein described is immaterial to the invention, and many of such are capable of wide variation while still securing the desired operative effects in the machine. It is not my intention therefore, to limit the invention to the precise details of construction shown in the drawings, since such may be varied without departing from the spirit and scopeof the invention.

Having described the invention, what I claim as new and desire to have protected by Letters Patent, is

1. A delivery mechanism for printing machines embodying therein a rewind reel, means for intermittently rotating said reel, a supply reel for a continuous strip or web of paper, surfaced with material having no aiiinity for printing ink and impervious to air or moisture, means whereby said supply reel is intermittently rotated to unwind said strip or web therefrom, guides intermediate said reels,-a printing couple, and means for conveying a printed sheet of paper from adjacent the printing couple and delivering it tlo said web or strip adjacent said rewind ree 2; A delivery mechanism for printing machines embodying therein a rewind reel,

means for intermittently rotating said -reel, automatically acting means whereby the operative effect of said first named means will be progressively modified to cause a substantially proportionate reduction of each rotative movement of said rewind reel as the diameter of the roll of paper thereon increases, a supply reel for a continuous strip or web of paper, surfaced with material having no afiinity for printing ink and impervious to air or moisture, means whereby said supply reel is intermittently rotated to unwind said strip or web therefrom, guides intermediate said reels, a printing couple, and means for conveying a printed sheet of paper from adjacent the printing couple and delivering it to said web or strip adjacent said rewind reel.

3. A delivery mechanism for printing machines embodying therein a rewind reel, means for intermittently rotating said reel, a supply reel for a continuous strip or web of paper, surfaced withmaterial having no aflinity for printing ink and impervious to air or moisture, means whereby said supply reel is intermittently rotated to unwind said strip or Web therefrom, guides intermediate said reels, means intermediate said supply reel and said rewind reel whereby irregularities in the traverse of the strip or web will be automatically compensated for, a printing couple. and means for conveying a printed sheet of paper from adjacent the printing couplewand delivering it to said web or strip adjacent said rewind reel.

4:. A delivery mechanism for printing machines embodying therein a rewind reel, means for intermittently rotating said reel, a supply reel for a continuous strip or web named means and the actuatin ailinity for printing ink and impervious toair or moisture, means whereby said supply reel is intermittently rotated to unwind said strip or web therefrom, guides intermediate said reels, a printing couple, means whereby said printing couple may be made ino erative, operative connections'between sai last means for said supply reel and said rewin reel, whereby said actuating means will be made inoperative simultaneously with the printin couple, and means for conveying a prints sheet of paper from adjacent the printing couple and delivering it to said web or strip adjacent said rewind reel.

5. A delivery mechanism for printing machines embodyin therein a rewind reel, means for intermittently rotating said reel, a supply reel for a continuous strip or web of paper, surfaced with material having no affinity for printing ink and impervious to air or moisture, means wherebysaid suppl reel is intermittently rotated to unwind sai strip or web therefrom, means whereby the operative effect of the means for rotating said rewind reel and said supply reel may be varied to ensure a close spacin of the printed sheets upon the strip or we guides intermediate said reels, a printing couple, and means for conveyin a printed sheet of paper from adjacent t e printing couple and delivering it to said web or strip adjacent said rewind reel.

6. A delivery mechanism for printing ma.- chines embodying therein a rewind reel, means for intermittently rotating said reel, a supply reel for a continuous strip or web of paper, surfaced with material having no afiinity for printing ink and impervious to air or moisture, means whereby said suppl reel is intermittently rotated to unwind said strip or web therefrom, means whereby the speed ratio of the means for rotating said rewind reel and said supply reel, and the printing. couple may be varied to adapt the machine to the use of either one or a plurality of plates on the printing couple, guides intermediate said reels, a printing 1 couple, and means for conveying a printed sheetof paper from adjacent the printing aflinity for printing ink and impervious to air or mo1sture,.means whereby said supply reel is intermittently rotated to unwind said chines embodying therein a rewind reel, a

pair of friction disks upon each side ofv the machine adjacent said rewind reel, co-operating friction disks ca'rried by the opposite ends of said reel, .gear wheels carried by the members of a pair of friction disks, a gear wheel meshing with each of said first named gears, a ratchet wheel carried by said last named gear, a swing arm mounted to move about an axis concentric with said ratchet wheel, an actuating pawl carried by said swing arm adapted to normally engage said ratchet wheel, an acruate shield rotatably mounted upon an axis concentric with said ratchet wheel and having a radial extending arm, a nut carried by said arm, a lead screw co-operating therewith, operative connections between said lead screw and a disk of one of said pairs, whereby the effective engagement of said pawl and said ratchet wheel will be progressively reduced as the diameter of the roll or web of the rewind reel increases, a supply reel for a continuous strip or web of paper, surfaced with material having no affinity for print ing ink and impervious to air or moisture, means whereby said supply reel is intermittently rotated to unwind said strip or web therefrom, guides intermediate said reels, a printing couple, and means for conveying a printed sheet of paper from adjacent the printing couple and delivering it to said web or strip adjacent said rewind reel.

9. A delivery mechanism for printing ma,-

chines embodying therein a rewind reel, means for intermittently rotatingsaid reel,

a supply reel for a continuous strip or web' of paper, surfaced with material having no affinity for printing ink and impervious to air or moisture, two friction drums operatively engaging the strip or web upon said supply reel, intermittently operative means actuating said friction drums, guides intermediate said reels, a printing couple, and means for conveying a printed sheet of paper from adjacent the printing couple and delivering it to said web or strip adjacent said rewind reel.

10. A delivery mechanism for printing machines embodying therein a rewind reel, means for intermittently rotating said reel, a supply reelfor a continuous strip or web of paper, surfaced with material having no I afiinity for printing ink and impervious to air or moisture, two friction drums operatively engaging the strip or web upon said supply reel, gear wheels carried by said drums respectively, a ge'ar wheel meshing with said first named gear wheels respectively, a ratchet wheel carried by said last named gear wheel, a swing arm mounted concentrically with said ratchet wheel, a pawl carried thereby and cooperating with said ratchet wheel, means intermittently actuating said swing arm, whereby said supply reel will be intermittently rotated at a constant speed, guides intermediate said reels, a printing couple, and means for conveying a printed sheet of pa r from adjacent the printing couple and delivering it to 1said web or strip adjacent said rewind ree I 11. A delivery mechanism for printi machines embodying therein a rewind re a pair of friction disks upon each side of the machine adjacent said rewind reel, co-operating friction disks carried by the opposite ends of said reel, gear wheels carried by the members of a pair of friction disks, a gear wheel meshing with each of said first named gears, a ratchet wheel carried by said last named gear, a swing arm mounted to move about an axis concentric with said ratchet wheel, an actuating pawl carried by said swing arm adapted to normally engage said ratchet wheel, an arcuate shield rotatably mounted upon anaxis concentric with said ratchet wheel and havin a radially extending arm, a nut carried y said arm, a lead screwco-operating therewit operative connections between said le screw and a disk of one of said airs whereby the effective engagement 0 said pawl and said ratchet wheel will be progressively reduced as the diameter of the roll or web of the rewind reel increases, a supply reel for a continuous strip or web of paper, surfaced with material having no afiinity for printing ink and impervious to air or moisture, two friction drums operatively engagin the strip or web upon said supply ree gear wheels carried by said drums respectively, a gear wheel meshing with said first named gear wheels respectively, a ratchet wheel carried by said last named gear wheel, a swing arm mounted concentrically with said ratchet wheel, a pawl carried thereby and co-operating with said ratchet wheel, a link connecting said swing arms respectively, means intermittently actuating said last named swing arm, whereby said supply reel will be in-' veying a printed sheet of pa r from adjacent the printing couple an delivering it to said web or strip adjacent said rewind reel.

12. A delivery mechanism for printing machines embodying therein a rewind reel, a pair of friction disks upon each side of enace first named gears, a ratchet wheel carried by said last named gear, a swing arm mounted to move about an axis concentric withsaid ratchet wheel, an actuating pawl carried by said swing arm adapted to normally engage said ratchet wheel, an arcuate shield rotatabl mounted upon an axis concentric with sa1d ratchet wheel and havin a radially extending arm, a nut carried y said arm, a lead screw co-o crating therewith operative connections tween said lead screw and a disk of one of said airs whereby the efiective en agement o pawl and said ratchet w eel will be progressively reduced as the diameter of the roll or web of the rewind reel increases, a supply reel for a continuous strip or web of paper, surfaced with material having no affinity for printing ink and impervious to air or moisture, two friction drums operatively engagin the strip or web upon said supply ree gear wheels carried by said drums respectively, a gear wheel meshing with said first named gear wheels respectively, a ratchet wheel carried by said last named gear wheel, a swing arm mounted concentrically with said ratchet wheel, a pawl carried thereb and co-operating with said ratchet whee, a link connecti said swing arms respectively, a crank whee connections between said crank wheel and a printin couple, a pitman connection between sai crank wheel and said last named swing arm, whereby. said supply reel will be intermittently rotated at a constant speed and said rewind reel will actuated simultaneously therewith, guides intermediate said reels, a printing couple, and means ,for conveying a printed sheet of paper from adjacent the printing couple and delivering it to said web or strip adjacent said rewind reel.

13. A delivery mechanism for printing machines embodying therein a rewind feel, a pair of friction disks upon each side of the machine adjacent said rewind reel, co-operating friction disks'carried by the opposite ends of said reel, gear wheels carried by the members of a pair of friction disks, a gear wheel meshing with each of said first named g'ears, a ratchet wheel carried by said last named gear, a swing arm mounted to move about an axis concentric with said ratchet wheel, an actuating pawl carried by said swing arm adapted to normally engage said ratchet wheel, an arcuate shield rotatably mounted upon an axis concentric with said ratchet wheel and having a radially extending arm, a nut carried by said arm, a lead screw co-o rating therewith, operative connections tween said lead screw and a disk of one of said pairs, whereby the efiective engagement of said pawl and said ratchet wheel will be progressively reduced as the diameter of the roll or web of the rewind reel increases, a supply reel for a continuous strip or web of paper, surfaced with material having no aflinity for printing ink and impervious to air or moisture, two friction drums operativel engaging the strip or web upon said supp y reel, gear wheels carried b said drums respectively, a gear wheel mes ing with said first named gear wheels respectively, a ratchet wheel carried by said last named gear wheel, a swing arm mounted concentrically with said ratchet wheel, a pawl carried thereby and co-operating with said ratchet wheel, a link connecting said swing arms respectively, a crank wheel, connections between said crank wheel and a printing couple, a pitman connection between said crank wheel and said last named swing arm, whereby said supply reel will be intermittently rotated at a constant speed and said rewind reel will be actuated simultaneously therewith, means whereby the crank of sa1d wheel may be adjusted radially thereof to adjust the movement of the rewind and the supply reels to secure a desired spacin of the printed sheets upon the strip or we guides lntermediate sa1d reels, a printin couple, and means for conveyin a printe sheet of paper from adjacent t e printing couple an delivering it to said we or strip adjacent said rewind reel.

14. A delivery mechanism for printing machines embodying therein a rewind reel,

a pair of friction disks upon each side of the machine adjacent said rewind reel, co-opcrating friction disks carried by the opposite ends of said reel, gear wheels carried by the members of a pair of friction disks, a gear c wheel meshing with each of said first named gears, a ratchet wheel carried by said last named gear, a swing arm mounted to move about an axis concentric with said ratchet wheel, an actuating pawl carried by said swing arm adapted to normally engage said ratchet wheel, an arcuate shield rotatably mounted upon an axis concentric with said ratchet wheel and havin a radially extending arm, a nut carried y said arm, alead screwv co-operating therewith, operative connections betweensaid lead screw and a disk of one of said pairs, whereby the effective enga ement of said pawl and said ratchet whee will be progressively reduced as the diameter of the roll or web of the rewind reel increases, means whereby said pawl a supply reel for a continuous strip or web of paper, surfaced with material having no aflinity for printing ink and impervious to air or moisture, means whereb said supply reel is intermittently rotate to unwind said strip or web therefrom, guides intermediate sa1d reels, a printing couple, and

means for conveying a printed sheet of patively engaging the strip or web upon said supply ree gear whee carried by said drums respectively, a gear wheel, meshing with said first named gear wheelsres ctively, a ratchet wheel carried by said ast named gear wheel, a swing arm mounted concentrically with said ratchet wheel, a pawl carried thereby and co-operating with said ratchet wheel, means intermittently actuating said swing arm, whereby said supply reel will be intermittently rotated at a constant speed, means whereby said pawl may be disen a ed from said ratchet wheel irrespective o t e relative positions thereof, guides intermediate said reels, a printing couple, and means for conveyin a printe sheet of pa er from adjacent t e printing couple and elivering it to said web or strip adjacent said rewin reel.

16. A delivery mechanism for printing machines embodying therein a rewind reel, a pair of friction disks upon each side of the machine adjacent said rewind reel, cooperating friction disks carried by the opposite ends of said reel, gear wheels carried by the members of a pair of friction disks, a gear wheel meshing with each of said first named gears,a ratchet wheel carried by said last named gear, a swing arm mounted to move about an axis concentric with said ratchet wheel, an actuating pawl carried by said swing arm adapted to normally engage said ratchet wheel, an arcuate shield rotatably mounted upon an axis concentric with said ratchet .wheel and having a radially extending arm, a nut carried by said arm, a lead screw co-operating therewith, operative connections between said lead screw and a disk of one of said pairs, whereby the effective engagement of said pawl and said ratchet wheel will be progressively reduced as the ,diameter of the roll or web of the rewind reel increases, a supply reel for a continuous strip or web of paper, surfaced with material having no aflinity for printing ink and impervious to air or moisture, two friction drums operatively the nection between said crank wheel and said last named swing arm, whereby said supply reel will be intermittently rotated at a constant speed and said rewind reel will be actuated simultaneously therewith, means whereby said pawls' may be disengaged from said ratchet wheels irrespective of the relative positions thereof, guides intermediate said reels, a printing'couple, and means for conveying a, printed sheet of paper from adjacent the printing couple and delivering it to said web or strip ad acent said rewind reel.

17. A delivery mechanism for printing \machines embodying therein a rewind reel,

a pair of friction disks upon each side of the machine adjacent said rewind reel, cooperating friction disks carried by the opposite ends of said reel, gear wheels carried by the members of a pair of friction disks, a gear wheel meshing with each of said first named gears, a ratchet wheel carried by said last named gear, a swing arm mounted to move about an ,axis concentric with said ratchet wheel, an actuating pawl carried by said swing arm ada ted to normally engage said ratchet whee an arcuate shield rotatably mounted u on an axis concentric with said ratchet wlieel and having a radially extending arm, a nut carried by said arm, a lead screw co-operating therewith, operative connections between said lead screw and a disk of one of said pairs, whereby the effective en agement of said pawl and said ratchet w eel will be progressively reduced as the diameter of the roll or web of the rewind reel increases, a supply reel for a continuous strip or web of paper, surfaced with material having no afiinity for printing ink and impervious 'to air or moisture, two friction drums operatively engaging the strip or web upon said supply reel, gear whee s carried by said drums respectively, a gear wheel meshing with said first named gear wheels res ectively, a ratchet wheel carried by said ast named gear wheel, a swing arm mounted concentrically with said ratchet wheel, a

pawl carried thereby and co-operating with &

said ratchet wheel, a link connecting said swing arms respectively, a crank wheel, a pitman connection between said crank wheel and said last named swing arm, whereby said supply reel will be intermittently rotated at a constant speed and said rewind reel will be actuated simultaneously therewith, guides intermediate said reels, a print ing couple, a gear wheel carried by one of the members of said printing couple, actuating means for said crank wheel comprising a gear wheel entrained with said last named gear wheel, and a chain and sprocket connection between same and said crank wheel, and means for conveyin a printed sheet of paper from adjacent t e printing couple and delivering it to said web or strip adjacent said rewind reel.

18. A delivery mechanism for printing machines embodying therein a rewind reel, a pair of friction disks upon each side of the machine adjacent said rewind reel, co-opcrating friction disks carried by the opposite ends of said reel, ear wheels carried by the members of a pair of friction disks, a gear wheel meshing with each of said first named gears, a ratchet wheel carried by said last named gear, a swing arm mounted to move about an axis concentric with said ratchet wheel, an actuating pawl carried by said swing arm adapted to normally engage said ratchet wheel, an arcuate shield rotatably mounted upon an axis concentric with .said ratchet wheel and havin a radially extending arm, a nut carried y said arm, a lead screw co-o crating therewith, operative connections etween said lead screw and a disk of one of said airs, whereby the effective enga ment 0 said pawl and said ratchet whee will be progressively reduced as the diameter of the roll or web of the rewind reel increases, a supply reel for a continuous strip or web of aper, surfaced with material having no a ity for printing ink and impervious to air or moisture, two friction drums operatively engaging the strip or web upon said supply reel, ear wheels carried b said drums res ective y, a gear wheel mes g with said st named gear wheels respectively, a ratchet wheel carried by said last named gear wheel, a swing arm mounted concentrically with said ratchet wheel, a pawl carried thereby and co-operating with said ratchet wheel, a link connecting said swing arms respectively, a crank wheel, a pitman connection between said crank wheel and said last named swing arm, whereby said supply reel will be intermittently rotated at a constantspeed and said rewind reel will be actuated simultaneously therewith, guides intermediate said reels, a printing cou le, a gear wheel carried b one of the mem rs of said printin coup e, actuating means for said crank w eel comprising an oscillatory frame, two gear wheels of different diameters mounted thereon and adapted to be selectively en trained with the gear wheel of said printing couple, sprocket wheels carried by said gears respectlvely, a sprocket wheel carried 1 by said crank shaft, and a sprocket chain engaging all of said sprocket wheels.

19. A delivery mechanism for printing machines embodying therein a rewind reel, means for intermittently rotating said reel, a supply reel for a-continuous strip, or web of paper, surfaced with material having no aflinity for printing ink and impervious to air or moisture, means whereby said supply reel is intermittently rotated to unwind said strip or web therefrom, guides intermediate said reels, slotted uides, a takeup roller mounted therein and resting upon the strip or web intermediate said supply reel and said rewind reel whereby irregularities in the traverse of the strip or web will be automatically compensated for, a printing couple, an means for conveying a printed sheet of pa er from adjacent the printing couple and eliverin it to said web or strip adjacent said rewin reel.

20. A delivery mechanism for printing machines embodying therein a printing couple including a plate cylinder, a rotary impression cylinder, intermeshing gears carried by said cylinders respectively, a clutch mechanism whereby said impression cylinder may be operatively connected with or disconnected from its gear, a rewind reel, a supply reel for a continuous strip or web of paper, surfaced with material having no affinity for printing ink and impervious to air or molsture, guides intermediate said reels, means for conveying a printed sheet of paper from adjacent the printing couple and delivering it to said strip or web ad-- jacent said rewind reel, a ratchet wheel adjacent said rewind reel, operative connections between said ratchet wheel and said means, a swing arm mounted concentrically with said ratchet wheel, a pawl carried thereby, a ratchet wheel adjacent said supply reel, operative connections between same and said supply reel, a swing arm mounted concentrically with said last named wheel, a pawl carried thereby and co-operating with said ratchet wheel, means operatively connected with said last named swing arm and with said form cylinder, whereby said swing arm will be intermittently and continuously actuated, a link connection between said, swing arms, an arcuate releasing lever pivoted adjacent said first named ratchet wheel and extending throughout the maximum range of movement of said first named pawl. a similar arcuate releasing lever mounted adjacent said last named ratchet wheel and extending throughout the maximum range of movement of the pawl carried thereby, a lift armmounted adjacent each of said levers, a link connection between said lift arms, and bperative connections between one of said lift arms and said clutch mechanism, wherescribing witnesses, this 3rd day of August, by with the release of said clutch mecha- 1921. I nism said levers will both be actuated to Y move the pawls out of the operative rela- PETER AITGHISON.

5 tion to their associated ratchet wheels. Witnesses:

In witness whereof I have hereunto afiixed A. C. CARY 3rd, my signature, in the presence of two sub- M.'WAIH.