US1554355A - Printing press - Google Patents

Description

Sept.- 2z 1925. I 1,554,355 c. A. KELLOGG 4 PRIN ING mass Filed'Dec. 15, 1919 2 Sheets-Sheet l Sept. 22,-1925.

C.- A. KELLOG G rain-rue PRESS Filed Dec. 15, 1919 v QSheOiS-Shflt 2 Patented Sept. 22, 1925. V

UNITED STATES" CARL AL KELLOGG, OF BROOKLYN, NEW YORK.

PRINTING PRESS.

Application; filed December 15, 1919. Serial No. 344,953.

To all whom it may concern. I

Be it known that I, CARL A, liELLOGG, a citizen of the United States, residing in Brooklyn, county of Kings, and State of New York,haveinventedcertain new and useful Improvements in Printing Presses, of which the following is a specification.

The invention relates particularly to means for securing accurate impressions on either a w eblor a sheet of paper, or other appropriate material, placed between .pressure members adapted tocontact with the opposite faces of the web or sheet.

In practice, it has heretofore been deemed impossible to. take an impression of a flat form on a web or sheet ofany considerable size by using a straight-tacedor substantiallyqstraight-taced platen, without pro ducing wrinkles in thepaper orother material printed upon. caused partly'by air intervening-between the platen andthe web or sheet. Besides, in web printing, it has been-found that most rolls of paper are so unevenly wound that one side or edge longer than the other, thereby producing a tight anda loose side or edge, and when an attemptvwas made to print such a web with a flat or substantially fiat impression surface, it was discovered to be impracticable as the web would become badly wrinkled on the loose side and yield prints that were unreadable. Where the web has even sides,the air between it and the impression surface forms "a pocket or pockets, which causes wrinkles in the web as it is pressed against the form.

The principal object of the present invention is to provide simple and eliicient means for smoothingthe web or sheet and holding 40 the samesmooth during the interval of im* pression. The means provided forces out the air from between the impression member and the paper to be printed, and corn 1 pensates as wellfor the tight and loose sides T bed."

' ofunevenly rolled paper as it isspread over the face of the impression member. i Another, ob ect lsthe PTOVlSlOIl Of means for guiding the impression member in a substantially straight line during its entire movement, thereby 'insuringdirect contact ofthe'paper witlrthe form" ina plane normal to the latter, and permitting theiuse of suchv a platen; conjunction with aform Such wrinkles are A further object is to provide improved means for temporarily holding the web or sheet to the platen, and subsequently strip ping the printed web or, sheetfrom the form by lifting one end or side thereof in advance of the other, i

Features of the invention, other than those specified, will be apparent from the hereinafter detailed description, taken in conjuno tion' with, the accompanying drawings,

' In the accompanying drawing I have illustrated difi'erent practical embodiments of the invention, but the constructions herein shown are to be understood as illustrative only, andnot as defining the limits of the invention. i I

Figure 1 is a side elevation of a bed-andplaten machine embodying the invention; and, v

Figure 2 is "a similar view involving a modified form r of the invention.

The machine illustrated is a web printing press,'and,;in the interest of brevity and conoiseness, it will be described herein solely with reference to the production of prints on'paper Webs. It is to be understood, however, that the invention is not limited to this particular typeof printing press, but contemplates the application of the improve ments, either in wholeor input, to print ing presses of various types, as a curved platen, and, moreover, it is adapted for V printing on separate sheets as well as on continuous webs.- i

Referring to the drawings, 1 and 2 represent-respectively, the opposing members of a printing couple, which in the present exemplification of the invention embodies a platen reciprocable toward and awaytrom a bed'ot co-related dimensions. The platen is preferably located directly above the bed, but this arrangement is immaterial to the invention, (as the opposite members of the couple might be positionedotherwise, and still be capable of performing their respective functlons. The bed 2'is recessed, as at F, to receive a form or printing-sections adapted to beassembled in a suitable arrangement.

The platen 1 may be reciprocated in a vertical plane, or perpendicularly with relation to the bed 2, by any suitable power connections, including, for instance, intermeshing gears and has a fiat working face and C1a11l -CllSl S 3 and 4, mounted on shafts 5 and (3, respectively, as shown in Figure 1. Rods 7 and 8, connected at their upper ends to the said gears by means of wrist pins 9 and 10, and to the sides of the platen 2 at their lower ends, by pivot pins 11 and 12, furnish the means for raising and lowering the platen alternately in the operation of the machine. These instrumentalities, it will be understood, are duplicated on the opposite sides of the press.

In order to maintain the platen 1 in correct position relatively to the subjacent bed 2, the former is provided with one or more guideways, as 13, engaged by a boss or a corresponding number of bosses 14, integrally formed wit-h or rigidly secured to the frame of the machine. The arrangement is such, that the under face of the platen will be held squarely opposite-the upper face of the bed and form thereon at all times. Bearers 15 at the lower edges of the platen are adapted to come into contact with similar bearers 16 on the upper edges of the bed, the latter being placed substantially at the type-line. These bearers insure good printing by limiting the movement of the opposed members of the printing couple toward each other.

Cushionin devices are areferabl e111;

a l y ployed to prevent undesirable shocks or concussion when the platen and bed come together, These devices may consist of plungers, 17 arranged to enter air chambers 18, and whilst inactive normally, or during a considerable part of the travel of the mov able member of the couple, so as not to impedethe same, will serve to take up the of the contacting parts in such manner as to result in an easy movement at the end of the travel of the movable member or members of the printing couple toward one another, thereby enabling the machine to be run at a much higher speed than could be done with less favorable conditions. If desired, similar air-cushions may be provided to check the movementof the platen onthe upstroke as well as on the clown-stroke.

The web, indicated in the drawings by X, is shown as being conducted to the platen by passing it first between an in-feed roller 19, and tapes 20, which surround a series of rollers 21. Thence the web is led over a guide roller 22, and under a looping roller 23, which forms part of an equalizing appliance, designedto compensate for irregularities in the feeding of the web. From this appliance the web passes up over another guide roller 2%, then under a web lifting roller 25, whereupon it is led in a straight cou se beneath the lower face of the platen, to the out-feed mechanism. The latter includes :1 web lifting roller .26, a spring prt .d tensioning roller 27, a looping roller 28, forming part of an equalizer, a guide roller 29, tapes 3O surrounding a second series of rollers 21, and an out-feed roller 31, all of which are practically counterparts of the several elements included in the in-feed mechanism, as above described.

Oppositely inclined guideways shown as channel bars 33, are attached to the sides of the machine frame beyond the ends of the platen, to accommodate slides 32, carrying the web lifting rollers 25 and 26. These slides may be reciprocated by any suitable means, such for instance as cams 3d and 35, respectively connected by arms 36 and 37, to the axles of the web lifting rollers. The said arms, itwill be seen, have pivot and slot connections withthe rollers, and further include intermediate joints, as at 38 and 39, permitting tier-don of the arms as the cams are being revolved. The latter are mounted on the shafts 5 and 6, previously mentioned.

A bar 10 is placed transversely of the under surface of the platen to hold the web thereto at the time of taking an impression. This bar, however, is not indispensable, as it will be obvious that other means might be substituted for it to discharge the same function. Still other means could likewise be employed instead of the mechanisms hereinbefore described for feeding the web into the machine, holding it at rest while in en gagement with either member of the printing couple, and moving or shifting it, whereby spaced impressions are produced on the web. The means herein disclosed, however, are well adapted to the purpose.

From the foregoing description the operation of the invention, thus described will be readily understood, but it may be described, briefly, as follows. The in-feed roller 19 and tapes 20, passing around the rollers 21, feed the web X into the machine continuously, while the out-feed roller 31 and tapes 30 will pay out the web similarly without interruption. The looping rollers 23 and 28 serve to hold the web stationary at the impression surface of the platen, while the same is holding the web against the bar 40, until after the platen has completed an impression and started on its return move ment, This is accomplished by the looping roller 23 moving down to take up the web as fast as it is fed in by the roller 19 and tapes 20, and the roller 28 will move up to deliver the web to the out feed roller 31. These looping rollers will then be reversed, the roller 23 moving up, and the roller 28 moving down, this movement of the looping rollers operating, in conjunction with the in feed and out feed rollers, to shift the web the desired extent. The said looping rollers may be operated by a cam and connecting lever in a well known manner. From the out feed mechanism, the web may be led to any predetern'iined point, or to other printing couples, as desired.

As shown in Figure 1, the bar is flat faced, and made to extend across that part of the platen which projects beyond the leftend of the bed 2. It is held to the face of the platen by a pair of rods 41, pivotally connected therewith, one at each side ofrthe machine, and passing through brackets 42 and 43. The rods '41 are held normally raised through the agency'of springs 44, coiled around them between the brackets, which are fixed to the frame. The upper end of each one of these .rods has a pivot and slot connection with an arm 78 pivoted at 7 9, on the boss 14. The arm 7 8 carries a roller 80, engaged by a cam 45, on theshaft 5 and this camis :so shaped as to allow the bar 40 to'be raised by the spring 44 a little slower than the web is lifted, thereby keeping it clear of the web on its upward movement. The holding bar 40 isforced downward by. the platen against the tension of the spring 44,v and the cam 45' will hold the bar down in the position indicated at46,.a little after the platen has started on its upward stroke. The arm 78 and roller 80,

self. In that case it'need not beyielding or spring-pressed to the platen.

' 'Inthe present embodiment of the invention, the web is smoothed down 'upon the working face of the platen by positioning thereagainst a roller 47. Roller 47 is moved across the'platen, and affords a means of forcing the air from between the; web or sheet and 'the impression surface, thereby preventing wrinkles in the paper and an illegible production. The said roller 47 is revolvably mounted in an arm 48, of a bellcrank or angular leverpivoted as atl90, on

a bracket or carriage 52, supporting the ,form rollers 51,hereinafter described.

A spring 49 attached to the same bracket and to the other arm of the angular lever, operates to swing the said arm 48 upward and consequently to press the roller 47 toward the face of the platen. The arm 48, bracket 52, and spring 49 are duplicated on the opposite side of the platen, as the roller 47'is made to extend fully across the working face of the latter, the same as the web holding bar 40, previously described.

, The"r oller47 previously referred to,uis rotated over the'face ofthe platen, in order to smooth out the web X thereon and expel theair "from between the web and platen, byit-s reciprocation with the bracket 52, which is fast to a chain 53, shown in dot and dash lines only, and this smoothing roller. will take the position at the right of the bed 2, as indicated at 56, when the impression is being made. Starting at the left of the bed, the roller 47 is held down out of contact with the web X by a guide 61, until it reaches a normally open gate 62 therein, adapted to close an opening 63. The gate being open, the gap 63 allows the roller 47 to be raised by the arm 48 and spring 49 to the position shown in full lines, against the first'named guide 60. Then the gate 62 returns to its normal position, thereby pro ducing the gap or opening 63, which allows the roller to pass through on its next move ment to the right.

The holding and smoothing devices hereinabove described are shown in full lines at their highest points, just as the platen is lowered against the web. Like the hold.- ing bar 40, as before stated, the smoothing roller 47 might also be carried on the platen.

The position of the web on the platen is indicated by full lines in Figure 1. As there shown, the platen has just been low ered. into contact with the web, the latter,

intervening between the platen and the holding bar 40. The smoothing roll 47 is represented as having passed up through the gap or opening 63 intermediate the guides 60 and 61,.on its movement to the right. The looping rollers 23 and 28 are then moved so as to hold the web at rest while the platen continues its descent. In the meantime the roller 47 is rotated across the face of the platen and smooths out the web thereon, while the spring roller 27 rises and takes up any unevenness of the web rolled forward by the smoothing roller. The dot and dash lines show the run of the web during the interval. of impression.

The chain 53, before referred to, is an endless chain extending around sprocket wheels 54. and 55, the same being duplicated at the other side of the machine. The duplicate chains are reciprocated forward and back so as to impart a like movement to the form rollers .50and 51, which are arranged to take inkfrom a cylinder 57 (shown in dotted lines) or from any other suitable source. As illustrated, the cylinder 57' is mounted at the left end of the bed, and is supplied with ink by a roller H. The

ink may be made to flow from any desired shown) as it is applied to the form F on the bed by means of the rollers 50, 51.

The means shown for reciprocating the chains 58 include a shaft 64, driven from any suitable part of the machine, and gears and 66, loosely mounted on the said shaft. These gears are in mesh with an intermediate gear 68, on the sprocket wheel 54. The said means further comprise a crank disk 78, arms 74-, 75, 69, a rod 70, a spring pressed rod 77, a toothed part on the gear 66, and projections 71, 72 on. the rod 70. Another toothed part 67 is slidably keyed to the shaft 6%. As the roller bracket 52 nears the end of its stroke to the right, it strikes the projection 72, thereby moving in the same direction the rod and arm 69, through the medium of a sleeve K, fast on the latter named rod. It also moves the upper end of the arm 69, which is bifurcated to engage a pin on the rod 70. This causes the toothed part on the arm 69 to move to the right out of mesh with both the clutch members on the gears 65, 66, and allows the chains 53 to remain stationary the required length of time to take the impressions. The rotation of the disk 73 is 1 to 2, relatively to the disks 3 and 4, and so timed as to move the toothed part 67 into mesh with the tooth face of the gear 66, and thereby cause the chains 53 to be reversed, as soon as the impressions are taken. As the roller bracket 52 nears the end of its stroke to the left, it strikes the projection 71, thus moving the toothed part- 67 out of engagement with both the gears 65 and 66, when again the chains are at rest.

The means employed for raising and lowering the web into and out of contact with the impression member 1 and the form F are such that the web is held free and clear of the platen while it is being shifted ahead between the looping rollers 23 and 28 on upward movement of the impression member, and will be moved down with the said impression member from the time the platen contacts with the web at the holding bar 40. They will hold the web down until the platen has taken the impression and has risen from the form. The web lifting rollers will then raise the web from the form a little slower than the platen. This is accomplished as will be obvious by proper shaping and timing the operating means employed. The means herein shown for moving the web X up and down embodies the rollers 25 and 26, heretofore described, which are actuated by the cams 3 L and 35, and slide in the guides 32 and 33. The movement of the web lifting means is preferably such that the length of the web will not be changed between the guide rollers 2t and 27, although the web is compelled to take different heights and angles between the members of the printing couple.

One of the web lifting rollers, as 26, may be made to move a little ahead of the other lifting roller by the proper timing or shaping of the cam 35. By setting cam a little in advance of cam 84, the web will he lifted by the roller 26 gradually from the form, thereby stripping the web therefrom slowly and relieving the strain that would be put upon the web were it lifted bodily all at once, particularly from a large form or a number of forms assembled on the bed, and especially so where a heavy, tacky ink is used.

The construction of Figure 2 is similar in many respects to that of Figure 1, and, accordingly, in the interest of brevity the description thereof will be more or less limited to the differentiating features.

The modified construction embodies the members 1 and 2 of the printing couple, the former of which is raised and lowered as described by the links 7 and 8, it being guided meanwhile by the guide 18 and the web is fed between the platen and bed by the in feed roller 19 and the out feed roller 31 with each of which co-operates traveling tapes. However, in this modification instead of moving the looping rollers 23 and 28 alternately in vertical directions, the looping roller 23 is mounted for oscillation on av shaft 90 which carries the guide roller 23 and is movable in the are of a circle as shown by the dot and dash line A between the position shown in dot and dash lines in Figure 2. In like manner the roller 28 is mounted for oscillation about a shaft 91 which carries the guide roller 27 and is mov able in an arcuate path shown in the dot and dash line B between the positions shown in dot and dash lines to the right of Figure 2. These rollers are preferably operated in synchronism to simultaneously swing in a clockwise direction and then in the reverse direction, through the employment of suitable links, levers and cams as will be clearly understood. Through the operation of the looping rollers 23 and 28, as described, it will be noted that on their downward travel they will carry the web downwardly and lay it on the form and in subsequent movement in the reverse direction which serves to strip the web from the form. It will thus appear that in the construction under con sideration the looping rollers have the dual function of advancing the web with intermittent periods of rest or dwell and also serve to position the web upon and strip it from the form. By such construction the employment of the lifting rollers 25 and 26 shown in Figure 1. is obviated since their function is carried out by the looping rollers.

It will be noted in Figure 2 that the uppermost positions of the rollers 23 and 28 are such as to support the web' in a plane below the uppermost position of the platen 1 as shown in dot and dash lines and it further follows that duringthe operation of the machine the rollers 23' and 28 not only stri the web from the form but also free it from engagement with the platen. In practicethe operating paits are so constituted that the web is raised at a slightly slower speed than the platen whereby the operation of advancing the web is accomplished whilethe web is free fromengagement with "both the palten and form, and also provide for the holding of the web stationary during impression. 1 v

The form rollers 50 and 51 are supported torevolve in arms e carried by brackets 52 supported on chains 53 and are so constituted that the roller 50 will ink theform when the bracket 52 is moved in one direction whereas the roller 51 willink the formwhen the bracket is moved in the other direction. The form rollers 50 and 51 maybe supplied with ink from an ink drum, as described with reference to Figure 1, the chains 53 being similarly operated.

Each bracket 52 carries a pivotal rocker having a depending trip f and to this rocker are secured the arms 6. As the chains 53 are reciprocated to move to the right in Figure 2, the tri f engages with a stop g, rigid with the rame of the machine and oscillates the rocker so as to lift the form roller 50 and lower the form roller 51.; Between the rollers, and carried by the brackets 52 is an ink distributing roll d and during the manipulation ofthe rollers 50 and 51, as described, the former is moved free from the rolls d while the latter is shifted into contact therewith. During the subsequent movement of the chains 53 to the left, the form rollers pass over; the form with the roller 50 free from engagement therewith and with the roller 51 serving to apply ink to the form. As the form roller nears the ink drum the trip f engages with the stops h which serves to rock bothrollers in aneutral position so that they will both engage with the ink drum and be charged thereby. However, as the form rollers reach the terminus of their travel the trip'f engages with a stop 70 which reverses the position of the rollers to'bring the roller 50 into engagement with the distributor roll and into position to ink the form while the roller 51 is moved to idle or inoperative position above thetype line. It is when the form rollers are moving from left to right the roller 50 will do the inking and in moving from right to left the roller 51 will be in operation.

Just before the periodof impression the web is held to the platen by bars 40 and 40" corresponding to the bar 410 of Figure 1. The bars 10 and s0 will serve to alternately hold the web to the platen depending upon the direction of operation of the smoothingroller 47, it being desirable that the web be held tight at the edge of the platen rearwardly of the roller 17 and loosely at the end forwardly of said roller to readily allow of the smoothing of the web on the platen. This operation of the bars 40 and 10 into and out of contact with the web at the faceof the platen maybe accomplished by a crank disk 104 operating through arm105 having connection through both cranks 103 with the rods 102, the opposite ends of which are secured to the rods 41 and l which carry the bars 10 and 40 The upper ends of the rods 11 and 41 have a pivot and slot connection with arms 7 8 and 78? normally forced upward against 45 and 4:5 by springs 14: and 4& The springs 44 and 14 tend to lift the bars 40 and 10 in a positionto hold the web against the platen during impression while the crank disk 104, serves through the connection specified, to shift the bars 40 and 10 alternately in opposite directions to alternately engage the web to hold it to the platen. from the platen they are supported against the tension of the springs 44 and 4: by

brackets Q and R which extend beyond the ends of the platen as shown. The cams 45 and 45 serve to govern the elevation of the bars by their operating springs and, in practice, these cams are so shaped and timed that the bars are raised. at a silghtly slower speed than the platen to free them from the web and to allow of the freeing of the web from the platen so that the web may be advanced without friction withthese parts. The cams a5 and 45 as Well as the crank disk 104 may be simultaneously actuated in synchronism with the shafts 5 and 6 through the trains of gears 0, on, n and P the pitch lines of which are shown in dot and dash lines .in the drawings.

The smoothing roll 47 operates back and hen these. bars are moved free forth across the platen in both directions and is supported at its opposite ends by arms ,98 mounted for pivotal movement on an endless chain 92. The arms 93 project beyond the pivots S and carry weights 9-1 which serve to overbalance the roller 47 and hold it against the web. This mounting, however, allows the roller to be forced down by the platen when thesame descends from the full line position down into its dotted line position as shown at 96. The operations of the chains 53 and 92 are so coordinated that the form rollers 50 and 51 move over the formin advance of the smoothing roller 4:7 in either direction of their travel and the operation of these parts during the movement of the plates is as follows.

Starting with the parts in position shown in Figure 2 wherein the chains 53 and 92 are moving in the direction of the arrows C and 97 respectively, the form roller 51 continues to traverse the form and the smoothing roll 47 the web. When the form rollers have left the bed and come into the vicinity of the ink drum the roll 17 will have substantially reached the left end of the bed 2. During the greater operation of this movement to the left it has rolled over the web and smoothing it on the platen and the descending platen hasibeen constantly forcing down the roller until by the time the members go on to impression, the trunnions at the end of the rolLA? will have been forced down into the bifurcated ends the levers 98. The lower ends of the levers 98 cooperate with cams 100 so synchronized that during the impression period their rotation will hold the roll 47 at substantially the ty ac line but when the form rollers start their return movement and the platen starts toraise the low face of the cam will cooperate with the arms 98 and force the smoothing roll down to the dot and dash line positioned at 95 so that during the passage of the form rollers, the smoothing roll will be held depressed and free from engagement therewith. hen the form rollers have passed, the arms 98 are swung back by the cams 100 and the F weights 9d lift the smoothing roll and allow the chains 92 to carry the smoothing roll in the opposite direction. When the smoothing roll reaches the terminus of its travel tothe right, it is there engaged by arms 99 corresponding to the arms 98, and a cam 101, operating in the same manner as cam 100, depresses said smoothing roll into the dotted line position 96 to allow of the re versal of the elements at the right hand side of the machine. In the manner described the form rollers and smoothing roll move from right to left and from left to right, the form rollers always leading and the parts reversing automatically at the opposite terminii of their respective travels.

It will be understood that in both forms of the invention the parts are mounted on a suitable frame which forms a. skeleton of the machine. The construction of this frame will be clear to those skilled in the art, and, accordingly, in the drawings I have only shown asmall portion thereof which is designated by the reference numeral 200, and also the movements for the different elements or mechanisms I havenot deemed it necessary to show as any skilled mechanic can readily supply the parts and the movements for same.

It will be understood that changes in form and details, such as the substitution of equivalents may be made in the structure described without materially departing from the invention, the scope of which is commensurate with the appended claims.

Having thus fully described the invention, what I claim as, new, and desire to secure by Letters Patent is:

1. In a printing press, a printing couple embodying members having relative movement toward and away from each other, and means for effecting such movement, in combination with web smoothing mechanism operable to smooth the web when the print ing mechanism: is off impression.

2. In a printing press, a printing couple embodying a platen member and a form member, means for effecting relative movement between the platen and form members to move said members on and ofi' impression, means for guiding a web between the members of the printing couple and means, movable between the members of the printing couple, while off impression, forthe purpose of smoothing out the web and cansing it to lie fiat on the impression member.

3. In a printing press, a printing couple embodying a platen member and a form member, means for efiecting relative movement between the platen and form members to move said members on and off impression, means for guiding a web between the members of the printing couple, means movable between the members of the printing couple, while off impression for the purpose of smoothing out the web and causing it to lie flat on the impression member, in combination with means associated with the web guiding means for taking up the slack in the web resulting from the operation of smoothing said web.

at. In a printing press, a printing couple embodying a platen member and a form member, means for effecting relative movement between the platen and form members to move said members on and off impression, means for guiding a web between the members of the printing couple, means movable between the members of the printing couple, while off impression for the purpose of smoothing out the web and causing it to lie flat ou the impression member, in combination with means for maintaining the web under tension for the purpose of taking up any slack therein resulting from the smoothing operation.

5. In a printing press, printing mechanism in combination with a roller for smoothing out the web while said web is off impression and means for guiding the movement of said roller.

6. In a printing press, a printing couple embodying a form and impression member,

means for effecting movement between said members to successively move them on and off lmpression, means for guldmg the Web between said members, smoothing means operable between said members while off impression to cause the web to lie smooth upon the impression member and means for holding the web against slipping relative to the impression member during the smooth ing of the web thereon.

7. A printing couple embodying a form member and a straight face platen co-operating therewith, means for moving the platen on and off impression, means for guiding the web between the platen and the form member, said guiding means embodying web engaging members positioned near either end of the platen and mounted independently of the platen, and means for moving said members to strip the web from the form after impression.

8. A printing couple embodying a form member and a straight face platen co-operating therewith, means for moving the platen. on and off impression, means for guiding the web between the platen and the form member, said guiding means embodying rolls positioned near either end of the platen, means for raising and lowering the rolls to strip the web from the form after impression, and means movable between the platen and form while the printing couple is off impression to smooth the web on the impression surface of the platen, said rolls serving to hold the web in smooth condition on the impression surface of the platen when the platen goes on impression.

9. In a web printing machine, a printing couple, means for moving one member of the couple on and off impression, means for freeing a web from one member of the couple, said means being operable to cause the web to dwell during impression.

10. In a printing press, a printing couple,

means for moving the members of the printing couple off and on impression, and means for guiding a web between the members of sa1d couple, said means embodying means for simultaneously lifting and loop-' couple, and mechanism movable over one member of said couple to smooth out the material to be printed on prior to impression.

13. In a printing machine, a printing couple, means operable to move one member of said couple off and on impression and v means operable to smooth out the material to be printed upon prior to impression.

14. A printing machine having a couple including a form bed and a platen, one of which is movable towards and from the other for purposes of impression, means for supporting the paper at one end. of the platen, and a device movable across the platen prior to impression contacting with the paper to smooth the same upon the platen.

16. A printing machine having a couple including a form bed and a platen, one of which is movable towards and from the other for purposes of impression, means for smoothing the paper upon the platen prior to impression, and means for withdrawing the paper from the platen after impression, operable to detach the paper gradually from one end of the platen towards the other.

17 A printing machine having a couple including a form bed and a platen, one of which is movable towards and from the other for purposes of impression, means for smoothing the paper upon the platen prior to impression, means for retaining the paper in smoothed condition upon the platen during impression, and means for withdrawing the paper from the platen after impression, operable to detach the paper gradually from one end of the platen towards the others.

18. A printing machine having a couple including a form bed and a platen, one of which is movable towards and from the other for purposes of impression, and devices coacting with the respective members of the couple when separated between impressions, one such device being a form ink-- ing roller, and the other device being operable to smooth the paper upon the platen ready for impression.

19. In a printing machine, a printing couple, one member of which is provided with an impression surface, means for positioning material to be printed upon on such surface, a mechanical device mounted for movement over said impression surface and operable to smooth out said material on said surface prior to impression, and means for imparting movement to said device.

In testimony whereof, I have signed my name to this speclfication.

CARL A. KELLOGG.

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