US1792986A - Double-face covering machine - Google Patents

Description

Feb. 17, 195 J. G. HUYE 1,792,986

DOUBLE FACE COVERING MACHINE Filed June 28, 1929 6 Sheets-Sheet l Feb. 17, 1931. J. G. HUYE DOUBLE FACE COVERING" MACHINE Filed June 28, 1929 s Sheets-Sheet 2 I I I I I I I I I J Feb. 17, 1931. J. G. HUYE DOUBLE FACE COVERING MACHINE 6 Sheets-Sheet 3 Filed June 28. 1929 Feb. 17, 1.931. J. G, HUYE DOUBLE FACE COVERING MACHINE Filed June 28, 1929 6 Sheets-Sheet Feb: 17, 1931. J, HUYE 1,792,985

DOUBLE 'FACE COVERING MACHINE Filed June 28, 1929 6 Sheets-Sheet 5 I l l 5 I l I I l l I I l l I l I I i I I l amnion Feb. 17, 1931. J. G. HUYE DOUBLEFACE COVERING MACHINE Filed June 28. 1929 6 Sheets-Sheet 6 Patented Feb. 17, 1931 V UNITED STATES PATENT OFFICE;

JOSEPH e. nnYn, or new on EAns, LOUISIANA .VDOUBLE-FACE coves-Inc MACHINE Application filed June 28,

the speed of rotation of theapplying or pressure rolls and for pullingthe covering-paper from its supply rolls by said paste rolls in the direction of travel to the pressure rolls, whereby the turning weight ofthe "supply rolls of covering material Willbe taken. off

' of the seasoningwebs' of paper, preventing undue and uneven stretchingof the latter; to provide means for applyingadheslve to the covering layers of paper, controlling the amount of adhesive left on the paper at a plurality of points of its travel and for work-2' ing the adhesive intothejpOres'Qfthe paper at a pluralityof points of its travel as a single continuous operation,- all of said stepsbe= ing interrelated; to provide means for season big the paper after the paste has been initial ly {applied thereto and prior to its passage through the pressure roll P means for varying the lengthfof time of seasoning in accordance With the nature, body composition or characteristics'and eightor I thickness of the paper; to provide meansfo i' controlling the lateral spreading of the ad hesive to prevent bandingthereof; to provide means for insuring application of adhesive to all portions of-the area of the covering sheets, eventhough some obstruction in the paste pans might prevent theapplication of adhesive at the paste rolls to someiportion's of the respective covering sheets; to provide an open machine construction or visible adhesive applying and paper covering sheet conditioning machine, whereby the condition of each-Web of covering paper is visible sub stantially at all points from the time it leaves its supply roll to thetime it passes through 1929. Serial No. 374,482.

the pressure rollers 6 and 7*, so that any imperfection in the'condition of the paper is perceptible immediately to the operator; to provide special Working or-kneading means for working the covering paper and preventing curling of its edges; to 3 provide means collectively Working over a large area of the covering paper and holding the paper under tension and friction and so preventing lateral :creeping movement out of a direct straight'course to provide braking means for retardingthe rate of paper let-off from the supply roll, said brake. being; adjustable to cause slip between thepaper band and the paste-supplying roll to' compensate for the slight Variations of the stretching properties of various pieces of paper when coated with adhesive andsubject tothe working of the "kneading and stretching rolls,-whereby said covering paper in stretched and coated damp condition Will arrive at the pressure rolls at substantially the same speed of travel as the speed of rotation of the surface of said pressure rolls, but'not faster; to. providein such a machine simple means for driving the cardboard sheet-feeding' means andthe finished sheet-cutting means .wherebythe one is con trolled bythe'other.

Inthis application I SllOW and describe only several embodiments of my invention thereof as by law required. However, I am well aware that my invention is capable of a number of other and different embodiments, andfthat thevarious details thereof may be modified in many Ways all without departing from my said invention. Therefore, it is my desire and intent that'the drawings and description herein are to be considered as merely illustrative and not as exclusive. 7

Briefly, all covering paper, after being coated with adhesive requires a period in which the moisture of the adhesive can soalr into the acres of the aoer; r in other words to,

season, before being applied as a covering to pasteboard, otherwise the coating paper will tend to curl away from thecardboard and to crinkle. This period varies in accordance with the composition, nature" orci iaracteristics of the paper and its we'ig'l-it or thickness and simply by way of illustration of the practice the amount of working, kneading or other treatment to which the paper so coated is subjected. Further, when in such coated and damp condition it very easily stretches unevenly into odd shapes when subjected to a greater pull at one point than another, and sticks to anything its coated face contacts with, and so it is very difiicult by prior known apparatus to apply even a single large covering sheet to a corresponding sheet of material without having some crinkles or imperfeet-ions.

Further, the application of the covering sheet to but one side of the cardboard at a time as heretofore known results in setting up uneven strains and stresses in the cardboard, resulting in twisting and warping the resultant laminated product out of flat condition, whereas by simultaneously applying the covering sheets to both sides of the cardboard in accordance with my present invention both. sides of the cardboard are saturated to the same degree, subjected to the same strains, stresses and conditions in drying and dry simultaneously, resulting in producing a ilat laminated product in dried condition without need for special pressing or other treatment following such drying or discharge from the apparatus or machine of my invention.

In the accompanying drawings:

Figure 1 represents a side elevation, par tially broken away, of a machine embodying my invention;

Figure 2, a side elevation broken away, showing the central portion of the machine;

Figure 3, a top plan view of the parts shown in Fig. 2; c

Figure 4, a vertical sectional view on the line .t":i: of Fig. 3, looking in the direction of the arrows;

Figure 5, an enlargcxl detail longitudinal vertical sectional view through one end porion of the machine;

Figure 6, a top plan view of the pa rls illustrated in Fig.

7, a perspective exploded view of the knife structure;

Figure 8, a sectional view on line 88 of Fig. 3;

Figure 9, a perspective detail view of one of the scrapers and adjustable mounting means therefor;

Figure 10, a side view of a part of the ma chine to illustrate a modification; and

Figure 11, a top plan view, broken away, of Fig. 9.

My invention involves, roughly speaking, five operative groups of elements, viz. the two covering-paper supplying and treating trains, the covering-paper applying and pres sure rollers, the cardboard sheet-feeding means, and the mechanism for cutting off lengths of the finished laminated product, all of said groups being connected by suitable gearing, drive chains and other drive connections, and preferably being driven from a single source of power or main drive shaft.

Referring now in detail to the drawings, A indicates the machine frame, which may be of any suitable form and construction; 13, asuitable preferably flat surface work table of any suitable length and width for receiving a stock of cardboard sheets and having a feed registering gauge C cooperating with the feed kicker D in the proper positioning of the individual cardboard sheets during the operation of the machine; E, the main drive shaft mounted in the f 'ame A; F, a belt pulley keyed to the outer end of the shaft E, and driven by a belt 6- attending about said pulley F and driven by an electric motor H, and 1 a small gear pinion keyed to the inner end of the main power shaft E.

The pinion 1 meshes with a large gear 2 keyed to shaft 8, a small gear 4 keyed to said shaft 3 meshes with large gear 5 keyed to the adjacent end of the shaft 6 of the lower pres sure roll (5 to turn the latter, and gears 6 and 7, respectively, keyed to the other end portions ofrpressure roller shafts 6 and 7 and meshing with each other serve to positively drive the upper pressure roller 7 from the lowerapressure roller 6 The gear 5 meshes with and drives a large gear wheel 8 keyed to shaft 9, to which is keyed a sprocket wheel 10 driving a sprocket chain 11 passing about and driving a sprocket wheel 12 keyed to a shaft 13 in the central lower portion of the frame A, to which shaft 13 is keyed a bevel gear 14 meshing with bevel gears 15 and 16 respectively keyed to the adjacent end portions of the iongitudinally extending shafts 17 and 18 extending in opposite directions to the respective end portions of the frame A, at which points bevel. gears 19 are keyed to the respective shafts 17 and 18 and mesh with cooperating bevel gears 20 respectively keyed to the shafts 21 of the respective paste-applying and paper-pulling or feeding rolls 22.

A small pinion 28 is keyed to the other or distant end portion of shaft 9 and is adapted to mesh with any one of a plurality of interchangeable difierent size gears 24: removably mounted on and keyed to the corresponding end portion. of a shaft 26. A sprocket wheel 25 is formed integral with or is relatively immovably carried by each removable gear 2 1 and drives a sprocket chain 27 which passes about and drives a sprocket wheel 28 keyed to the shaft 29 of the rotary cutter bar 30, and a take-up roller 31 swingably mounted on the frame A by supporting arm 33 and bearing against the sprocket chain 27 and pulled against the same by a tension spring 32 connected to said frame A and to said arm 33 serves to maintain the sprocket chain 27 in taut driving condition, whatever size of gear wheel 24 be employed.

Said shaft 26 is formed with a crank 34 nd an adjustable sea drag link connected thereto and to the kicker D serves to cause reciprocat'ory feeding movement of the latterlengthwise of the feeding table B' in the notes of thelatter in time with the cycle of movement of the cutter bar 30 and knife bar carried thereby.

Thevari ous gears and drive connections will be so proportioned and so associated as to rotate saidpa'isterolls 22 respectively toward said paper-applyingand pressure rollers 6 and 7" andiat the same speed of rotation'as saidf'rollers 6 and 7 so as'to pull the paper from the'respective supply rolls M andfeed it toward'said paper-applying and pressure rollers 6 and 7 at substantially the same rate of speed as the speed of travel of the surface of said rollers 6 and 'Tflsaid pulling or feeding action of the paste rolls 22 being subject to mo'difi'cation bya braking means,"the

paste on the paste rolls22 permitting a cer-v tain amount of slip between the paper and paste rolls 22 respectively,"to slow up the rate of feed of the paper by saidpast'e rolls 22 re spectively to compensate for slight variations in the stretching propertiles of variousrolls of paper materials so as to maintain the proper timing between speed'of travel of the surfaces of paper applying and pressure r'oll-,

ers 6 and"? and therate of supply of'paper thereto. -f Q '3,

The'lower cove'ringpaperK and the upper coveringpaper L, which papers Willusually of different colors, will be pulled by the respective paste-applying rolls 22 from their respective supply rolls M rolled on shafts N reinovably rotatably mounted in the frame A, passing therefrom successively over a reel; ably rnounted roll 37, through and under the yoke bar 38 rigidly connectedtojand spaced from the Hill 37, over the rocl zab'ly inounted V scraperroll'39, over the paste-applying and er paper'K and Des thesame enters between Y to said rollers 6 aadfi, the upp r web o w pig-pap r L pa-s'sing over guide roller 58 after leaving its last ,unit P'andprior to reaching and then/eh 6r lower awningaper K being passed undergnid r llers as and 5 an bent back above roller'45 towardjfli rqlle'rs'e and 7&6 resent its tethered si'uif ce upward fer applica ia to he ewe'r' si e orree sheets of cal-ahead O fasfit .passes through between tfie muerse ahdt create-sateen maybe asnaaytaeaaiag or working and paste-removing units P for earn covering web of paper and L'as re quired for any given;maxiinuni'capa ity of machine; said units being spaced at regular intervals. For instance, it requires a certaintime forthe paste to soak into the paper, that is to say,'forthe paper to become seasoned after being coated with pasteand prior to being applied to the cardboard and unsperiod will vary in accordance with the absorbing qualities and weightor thickness of the paper; 'thus,-if it be desired to run the machine at a speed to produce fifty-feet of finish ed covered board per minute; five such units P eqiridistantly spaced, as illustrated in Fig; 1', willsuffice, as arranged giving a distance betweeneach supply 'roll' M and the rollers Stand Wof approximately twenty-five feet in thepath traveled by the paper, the units P beingsufiic ient'lyclose to each other to keep a thepaper under constant equal tension and to prevent all curlingof the edgesor flutter ing of the paper, sothat thepaper is allowed a seasening-peri'od of approxirnately a minute between the time paste is'ap'pliedto applying and pressure rollers 6 and 7% and emplo ing .a greater number of units P as may be necessary to maintain proper command of therespective paper webs K and between said paste rollers 22 and said rollers 6 and 7 The shafts of the rockable rolls 37c, 39 and 42 and the'rotating hold down and tension roller 41 and the paste roller 22 are all mounted in suitable hearings in oron the respective paste pansQ, which are provided with side flanges gwhich rest on top of supsR b'oltedor riveted to the side bars of the frame A and provided with lugs e an a an'cl -the' time it is applied to the cardboard. Ofcours'e, the capacity of the machine may be rto engage the end of the pan-Q, remote fromthe bevel gear 19to prevent the pan Q, from moving, or being moved, endWise away from gear 19 out of proper ahgmnentand to inaintaln the bevel gears" 19 and;20 1n proper cooperative relation.

The upper portions of the ends of the pan 7 Q and the side of the frame A adjacent the bevel gear 19 are vertically slotted to allow the jfiast e'loller 22 Wlth lt-S ShalftQl t0 be lifted from the pan Q ,to allow the saniefto' be cleaned and to be lowered back the pan Q. into normal operative positionmnd the roller isforzne'd with end spaciiigshoulders 22" concent'ric with ts axis to prevent endwis'e movement of the paste roller 22 iii the pan Q,

whereb thegea'rslQ and 20' will be kept in 'iiiesh during normal operativeconditions.

A scr per blade 40 is mounted. in the scraper roll 39 and adjustable toward or from the paste roller 22, according to the movement of said roll 39 about its axis to regulate the uniformity and thickness of the coat of adhesive carried around by said paste roll 22 and applied against the opposed face of the web of covering-paper K or L, as the case may be.

Each rockable roll 37, 39 and 42 is provided with an operative handle or short lever arm 37, 39 and 42, each formed with an eye receiving an end portion of its respective shaft, a friction screw S passing through the wall of each said eye and engaging the respective shaft end portion, serving to lock said handles or lever arms to the respective shafts, and friction screws T, turning through the tops of the respective bearings of said shafts 37, 39 and 42 and adapted to engage said shafts serve to lock said shafts, and parts carried thereby, in any positions to which they may be adjusted and, when turned out, permit the adjustment of said shafts and parts carried thereby to any desired positions.

Arms 46, extending up from the respective ends of said paste pan Q, support a stationary fixed rod 47 on which are adjustably mounted a plurality of resilient bifurcated tongues 48 by means of strap clamp portions 49 receiving clamping or tightening screws 50 whereby said bifurcated tongues may be adjusted about said rod 47 andlocked in any desired positions of adjustment,

Each tongue 48 receives a telescopic embracing resilient extension 51 having a clamping screw 52 extending through both sides of said extension 51 and received in the bifurcation of its corresponding tongue 48 and operative to lock said extension 51 to said tongue 48 in any position of endwise adjustment.

Each extension 51 has its free erd formed with downwardly presented ears between which is mounted on shaft 54 a short pressure roller 53 adapted to bear against the upper face of the paper web K or L and press the latter against the paste roller 22 with greater or less force, according to the adjustment of its tongue 48 about the rod 47, and to engage the paper web at different points with relation to the axis of the paste roller 22, according to the endwise adjustmentof the extension 51 on its tongue 48, so that said rollers 53 may be swung upward to inoperative position or be pressed toward the paste roller with more or less force and at various points with relation to the axis of said paste roller 22, thus providing a very delicate and cliicientineans for controlling the condition of the paper-covering web K or L at its paste roller 22 and the application of paste thereto.

The number of presser rollers 53 will vary according to the width of the covering-paper webs to be operated on that is to say, according to the operative length of the paste roller 22, five rollers 53 being shown closely adjacent each other in the embodiment illustrated.

By turning the rockable roll 37 so as to depress the paper web K or L by the yoke 38 to have a decided frictional dragging engagement over the curved non-rotating face of roll 37 or faces of non-rotating rolls 37 and 38 as indicated in dotted lines in Fig. 5, the rate of let-oil of the paper from its supply roll LI may be impeded and controlled over a substantial range, though it is not essential, considering the invention inits broader aspects, that the braking action be applied to the paper web as distinguished from the shaft N or roll M so long as there is provided some very delicate brake or control means functioning to the same end.

From the scrapers 43 the paper K and L passes through their respective series of scrapingand working or kneading units P, upper covering-paper L passing from its last unit P over guide roller 58 and from the latter directly between the applying and pressure rollers 6 and 7, lower covering-paper K passing from its last unit P down under guide roller 44, from there on a slant up and around guide roller 45 and from the latter runs upward and back towardthe last unit P, so presenting its coating surface upward, and enters between the applying and pressing rollers 6 and 7 with its coated surface presented in opposition to the coated surface of web L.

The cardboard feed kicker D driven by crank 34 and drag link 35 serves to feed the sheets of cardboard 0 between the webs K and L as they pass between said rollers 6 and 7, the movement of the kicker D being adjusted in'position by means of the adjustable drag link 35 to suit the particular length of cardboard sheets 0, say 32, 34, 36', 38, 40, 42 or 44 inches, as thecase may be, and being so timed by means of gear 5, gear 8, shaft 9, gear 23, gear 24 and shaft 26 as to move said cardboard sheets 0 when properly positioned on the feed table by the operator, toward and between said rollers 6 and 7 at regular intervals to be grabbed by said rollers 6 and 7, so that if the cardboard sheets 0 be of exact uniform size and width and all have perfectly straight edges they may be fed in with their adjacent edges in contact, thoughas a practical matter to allow for imperfections in sizes and cutting as thesheets of cardboard O are received from the mill an interval of about one-fourth to three-eighths of an inch will be allowed between the adjacent edges of said cardboard sheets 0, such allowance obviating risk of the overlapping of the adjacent edges of said cardboard sheets 0.

Now by substituting one size of gear 24 for a larger or smallersize of gear 24 while using the same sizes of sprocket wheels 25 and 28 the speed of rotating of the knife bar-30 may be varied to make a rotation'for every length of sheet of cardboard 0, so as to cut the'lam: inatedproduct inthe interval between each two sheets of cardboardiO, as covered by the uppe and lower covering-paper sheets L an Each scraping and workingor'kneading unit}? comprises an initial scraper blade 55, f

a pair, of lower fixed position rotatably mounted rollers 59,*a"'roll er rotatably mounted in a yoke 61 swingably mounted on rod 62 for adjustment toward and between rollers '59, and a final scraperblade 55, and a cent fixed portions of their unitframe 6,3,so

that by loosening :said screws 57 either or bothlofsaid scraper blades 55 and 5.5 may be adjusted as desired toward or from the-coated face ofsaid covering-paper K or L to remove more or less ,of the adhesive therefrom astheconditionof the paper at such unit may indicate to be desirable. 1 V

In connection with the final scraper blade 55' of each unit a plurality of rollers 53, five being illustrated, are provided, being constructed and mounted .on the rod .62 in the same manner as said rollers 58 are mounted on the rod 47 of each paste pan Q, as above described and being adjustable in the same ways withrelation to the edge of saidscraper blade '55. v

Each rod 52 is rigid and immovably nonrotatably mounted in the upper portion of its unit frame .63, which is rigidly secured to the frame A ,by'angle irons and/or cooperating rivets, bolts or other usual securing means.

Set:screws 65 passing through the wall of the upper pivoted ends of the yoke 61 are adapted to engage therod 62 to hold theyoke .61 and its roller 60in any position to which they maybe adjusted, and said yoke-61 and roller GOImaybe swungrup to the dotted line position shown'in Fig. 4 to facllltate the pa per web threading operation, or swung down, 7

for instance, to the solid line position indicated in said Fig. 4, being disposed substantially equidistantly between the rollers 59 and with its lowermost pointslightly below the highest point of said rollers 59 to, depress the paper web between said rollers 59 and put 1t under tension between said three rollers, subj ecting it to a reverse curve movement and at the same time pressing the paper against the rollers 59 to press the paste into the pores of the paper, or the yoke 61 may be swung to depress the paper web K or'L to a greater degree between the rollers 59 by the roller 60 subjeeting the paper to-greater tension and kneading action, or moved to raise the; roller 60, so decreasing the tension on, and kneading of, the paper, according as may be indicated as desirableby the conditioner appearance of the paper web K or L at any such unit P. 7 Further, the coated face of the web K or L in passing over and in Contact with the faces of the rollers 59 will coat them from end to end with adhesive, the natural tendency of 1 the adhesive coating of said rollers 59 being to spread out in an uniform coating, so that shouldany dry streaks be permitted from the paste roller 22 due to some obstruction lodging behind the scraper or wiper 40, such dry streaksor uncoated stripswill be coated the adhesive'on the rollers 59 in passing successively through the plurality of units P and prior to reaching theapplying and pressure rollers 6 and 7*. g 4 V i The drag link 35 comprises a shank a having a bifurcated bored endportionto receive the crank 34 and held thereto by a screw 64, and cooperates with a slotted portion 6 clamped to shank a by an adjusting clamping j screw 66 extending through said slotof b and turning into shanka, so that the length of shank 35 as a unit, and consequently the initial position of kicker D, maybe adjusted to suitd any length of cardboard sheets 0 to be use The shaft 26 extends through slots 67 inthe sides of the frame A and is mounted in bearings 68 adjustable toward and from shaft 9 andthe gear 23 keyed thereto by means offadjusting screws 69 having a ball and socket pushing and pulling connection with the respective bearings'6'8 and respectively engaging in internally screw threaded bores through lugs 70 rigid, or integrahwith frame A and have enlarged squared operating heads 7 1,.all as shown inFig. 2, so that as one size or diameter gear 24t is substituted by a different diameter gear 24L the shaft 26 with said substitute gear 241ii1aybe moved ftoward or from the shaft-9 and gear 23 keyed thereto to insure. theproper meshing of said gears 23 and 24. g

The cutting-off mechanism in the embodiment illustrated comprises the sprocket28 driving the shaft 29 .of cutter bar 80 which is provided with a plurality of equidistantly spacedtransverse slots 72 receiving the shanks 73 of knife .barclamps 7 l which re- ..ceive the knife 75,- setj-screws 76 working through said cutter bar 30; and frictionally engaging said shanks 73 to. lock them in any desired position of adjustment'radially of said cutter bar 30 and clamping screws 76' working through the jaws of said clamps 7 4 andextending through the intervening portion of said knife 7 5 serve to draw the jaws of the respective clamps 74 into tight gripping engagement with the'knife 75.

adj usting theshanks 73 through the cutter bar 30 to increase the distance in a radial direction between the edge of the knife 75 and the axis'of said cutter bar 30 I am able to compensate for depletion of the knife material by sharpening and wear and also by materially increasing such radial distance I am able to increase the snap or kicking action of the knife 75 on the pieces as cut off, the cutter bar 30 being adjusted up or down by the adjusting screws 77 and 78 at each end as may be necessary.

A wooden roller 7 9 rotatably mounted and having its axis in vertical alignment with the axis of the cutter bar 30 serves as a backing for the laminated material while being cut by the knife 75, and I may provide a receiving table U to receive the pieces of finished product as cut off by the knife.

In the modification illustrated in Figs. 10 and 11 the kicker drag link 35 is disconnected from the crank 3d and removed with the kicker D by sliding the latter lengthwise out of the rear end of the slot 36, and instead of the separate cardboard sheets 0 I mount a large roll of cardboard V, wound about a large core or shaft 80, which may be tubular, in the bearings 81 of frame A below the feed table B and to the rear thereof, and lead the continuous web of cardboard V-up over the rear end of feed table B, and along the upper face thereof and between the covering-paper webs K and L as the same pass between the applying and pressure rollers (3 and 7?.

By using a roll of cardboard V I can very eiiiciently and economically handle very light weight cardboard stock, and, by employing tough, strong covering-paper on both sides, "can obtain a very strong, still", laminated product.

, In both embodiments substantially'all surface paste or adhesive will be scraped from each of the paper webs K and L it leaves the final scraper blade "of its last unit P, relying on the adhesive that has been worked into and absorbed by the paper, so that as the paper webs K and L pass through the applying and pressure rollers 6 and 7 on oppr site sides of the cardboard sheets 0 or card board web V they will be tightly pressed against the opposed faces of said cardboard, such pressure squeezing out sufficient adhesive from said webs to make a good, smooth, tight bond with the cardboard, but will avoid the trouble of excess paste being squeezed out at this point and avoid difiioulty in the smooth, even applicationof the covering webs of paper and, further, because of the relatively small amount of adhesive at the point of association, the resultant laminated prod uct will dry very quickly after leaving such point of association and will be almost entirely free of any warping tendency.

Obviously, as to both forms the machine may be employed to cover only one side of the cardboard, in which case only one covering web K or L will be threaded up, or the machine may be made to handle only a single covering web K or L.

Also, it is obvious that the rollers 53 and their resilient adjustable mounting means are not restricted inuse to the machine illustrated, but may beused where applicable in any driven or hand-operated or hand stripper coating machine or device.

The applying and pressure rollers 6 and 7 1 stock such to be yieldable and have a pulling frictional action on the material fed between said rollers, may be of any construction and material to this end, and are merely conventionally illustrated in the drawings.

What I claim is:

A machine for applying a covering web to sheet material comprising a pair of opposed pressure rollers for applying said web to said sheet material and for pushing the resultant laminated product from said rollers, a surface slidably supporting said laminated product as it passes from said rollers, a cutting-0E knife mounted for rotation about an axis parallel to said rollers and above said supporting surface, and gearing for driving said rollers, in combination with an intermediate gear continuously meshing with and driven by said gearing, a shaft mounted for adjustment toward and from said intermediate gear and adapted to removably receive for rotation therewith one of a plurality of different sizes of gears each provided with a standard size drive wheel, and means adapt ed tobe'driven by said drive wheel for driving said knife.

In testimony whereof, I have si ned my name to this specification at Washington, D. C., this 28th. day of June, 1929.

JOS PH G. HUYE.

l ii) lit)

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