US2291841A - Patch applying and laminating mechanism for paper working machines - Google Patents

Description

Aug. 4, 1942. E. G. STAUDE PAT CH APPLYING AND LAMINATING MECHANISM FOR PAPER WORKING MACHINES Filed April 1, 1940 s Sheets-Sheet 1 IAN EN 7'0 R f wmz 122 0:

Aug. 42-. E. G. sTAubE 2,291,841 PATCH APPLYING AND LAMINATING MECHANISM FOR PAPER WORKING MACHINES Filed April 1 1940 6 Sheets-Sheet 2 Ar/wme I Aug. 4 PATCH APPLYING AND LAMI-NATING MECHAHISM FOR PAPER WORKING MACHINES E. G. s'TAuDE Filed April 1, 1940 a Sheets-Sheet 3 II/VVEN for? 5mm 5122x04 Ewan Au 4, 1942. G. STAU DE- 2,291,841 PATCH APPLYING AND LAMINATING MECHANISM FOR'PAPER WQRKING MACHINES Filed April 1, 1940 s Sheets-Sheet 4 Aug. 4, 1942. G.. $TAUDE 2,291,841

PATCH APPLYING AND LAMINATING MECHANISM FOR PAPER WORKING MACHINES Filed April l, 1940 6 Sheets-Sheet 5 v1/I v Q 4 i L 3 J s //fl// AW/////////// $3 9 E J z 35 i Z6 Aug; 1942- E. s s-mums 2,291,841

PATCH APPLYING AND LAMINATING MECHANISM FOR PAPER WORKING MACHINES Filed April 1, 1940 i 6 sheets sheet 6 '///////////////;f' /l/(ll fan w Imam @OM 44.4,,

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This invention. relates to improvements in patch applying machines; that is,- machines for applying patches, linings, or covers to sheet material. Machines of this character are adapted to apply a patch coextensive in length with the material to be patched but the primary and distinctive utility of a patchapplying. machine resides in the fact that it is adapted to apply patches which are shorter than the patched arti-.

cles, in exact registration with predetermined areas thereof.

A machine of the character referred to includes basically mechanism for feeding a first material to be patched, a patch applied adapted I to roll patches progressively into contact with spaced areas of the first material, mechanism for paying out a'web of patch material to the patch applier at a slower speed than the surface speed of the patch applier, means for severing .successive patches from the leading end of the web, and means for causing the patch applierto exert a slip drag on the web before severing, and

to advance the severed path to meetingrelationwith the first material without slipping, all as broadly disclosed in my Patent #1369306 of August 7, 1934. The modern trend has been toward the use of suction for causing the patch applier to exert a slip drag on the web before severing and to advance the severed patch to ation. The suction ducts become clogged with lint and dirt which always accumulates around any paper working machine. Frequent and tedious cleaning is necessary, and in th int v l b 40 desi1r1ed pressure of the belts vagainst the patch app er.

tween cleanings the suction' gradually becomes less effective and more sluggish and uncertain in its action.

Then too, in order to make thesuctionoperated machines practical, the air current is caused to be quickly. reversed to blow the patch from the surface of the patch .applier at the time of contact with the adhesive on the moving blank to which the patch is to be applied. A serious disadvantage of this scheme resides in the fact that in blowing oil it is a very diflicult matter, at some time'or other, to prevent oil from working through the oil filter and the passages from the vacuum pump and coating the surface 'of the \plier. These belt devicesform continuous'guides for the web and-serve also to exert anuninterrupted smoothing tension upon the-leading end 1 o oi-theweb before-,thepatch-iscut.

Thefact that the belt devices are positively 45 mounted that the driving tension causes the roll- 'ers to be drawn lightly toward theJbelt applier.

so pivot and the patch applier.

NITED STATES PATENT OFFICE -j PATCH APPLYING AND LAMINATING MECH- I ANISM FOR PAPER WORKING Edwin G. Stande, Minneapolis, Mi April 1, 4 S rial No. 327,144 r 36 Claims.

in time interferes with the operation of the machine.

It is an important objector the present inve'n'f tion to provide improved auxiliary feeding means cooperative with the patch applier and bearing lightly thereagainst for causing the patch applier to exert a slip drag on the leading end of the 1, web before cutting and to carry the cut patch forward without slipping.

10 In accordance with a practical and advantageous embodiment of theinvention, and as disclosed herein, the auxiliary feedingimeans desirably takes the form of friction belt. devices which are individually adjustable laterally oi the path of web feeding, and which are positively driven;

in unison with the surface speed ofthe patch ap-- driven is an important featureof the invention because maintenance of the ,speed'of the belts andjtheir pulleysat'thesurface speed" of; the 5 patchapplier does not depend upon-contact of the belts with the patch applier. In the-case of long patches particularly there is neverany need to accelerate the belt mechanism throueh the web or the cut patch, so that the only inertia 30. to be overcome is that of the light patch mate-' rial itself.

The use of belt devices is also important because the pressure of a belt throughout its entire active stretch can be adjusted by the single and v simple operation of adjusting the tension of the belt. It is a further important feature of the invention, therefore, that the auxiliary feeder I comprises belt'devices, together with mean'sfor,

adiusting the tension of the belts to produce any It is a-further feature that the opposite ends of the active or patch applier engaging stretches of the belts are guided by rollers which are so These guide are so arranged that the pull upon each roller is in a line which passes near to the pivot of the roller support, but between the cylinder. This, of course, soils the product and vulcanization 0! rubber to the ylinder is a difficult and expensive operation. There is also a serious objection to this procedure, because if the rubber surface is injured or becomes worn, the entire cylinder must .be-removed from the machine and new rubber revulcanized thereon to replace the worn or injured surface.

In order to obviate this serious objection, I

. have invented a very simple manner of replacing or renewing the rubber surface between the anvil bars, against which the continuously revolving knife acts. I accomplish this by covering the cylinder between the anvils with sections of curved sheet metal plate to which sheet rubber has previously been vulcanized. I secure these sections in position by any practical method, such as suitable screws, but preferably by bevelling the edges of each section and clamping it in position on the cylinder by suitable clamping means held in place by easily accessible cap screws.

I can purchase these rubber covered sheets, which are laminated to type metal, in large fiat sheets, commercially, and my method is to cut this material to proper shape and size and to curve it to fit same on the cylinder. Such material serves as a friction surface of high wearing quality. With this construction I provide a comparatively inexpensive, easily replaceable for repair, rubber surface on the patch applying drum. I have devised also a very practical means for holding such rubber faced sections in place by the anvil bars. The anvil bars can be quickly removed in the event that the sections are dam.- aged or worn. The whole patch applying cylinder is therefore readily adaptable for quick repairs when required.

Further important features of the invention have to do with the provision of improved means for quickly altering the machine so that one, two or three patches may be cut and applied for each revolution of .the patch applying and cutting cylinder. The rotary cutter which coopinder is arranged to receive one, two or three knives simultaneously, the knives being uniformly spaced whenever a plurality of them is used. Readjustment can be made in some instances,

provision of adjustable cam means for causing the compensator to perform its operating cycle one, two or three times in each revolution of the patch applying and cutting cylinder in accordance with the number of cutting operations for which the machine is set and in timed relation to such cutting operations. I have found that whether I use vacuum or not, it is diflicult to hold the web against the surface of the cylinder or patch applying member immediately after a sheet has been severed. Where I use vacuum tohold the web against the cylinder, I find that the web drops off whenever the machine is stopped a few seconds and the vacuum disappears. I have solved the problem by the, addition of small rollers which are preferably idler rolls and which press the web of cellulosic material against the cylinder at all times before and after severing so rethreading of web on starting is eliminated. It is broadly new to use any form of mechanical means for the purpose stated. I therefore consider these idler rolls an important improvement.

As I use no suction to hold the sheet to the cellulose applying drum,'I have found that the ordinary tack in the cellulose adhesive is sufdcient to pull the cellulose sheet away from the rubber covered drum without the need of an air blast or reversed suction to quickly force the sheet off from the cylinder. This is particularly true when I provide grooves in the cylinder, as

shown in Figure 12, which prevent suction atcrates with the patch applying and cutting cylas when changing from three cuts per revolution 1 to one out per revolution, simply by removing two of the knives, but in other instances it is necessary to replace anvil bars of the patch applying and cutting cylinder by.non-cutting' bars which perform the clamping function of the anvil bars, but which are formed with grooves to permit the knives to pass without cutting. Provision is made for facilitating'the rapid interchange of anvil bars and non-cutting bars. 7

There are also certain zones of the patch applying and cutting cylinder which would normally be engaged by certain of the knives, but upon which no cutting is ever performed. These zones are grooved to permit the knives to pass without cutting and without marring the patch web material.

Although the web is normally paid out to the patch applying and cutting cylinder at a lesser speed thanthe surface speed of the cylinder, it is jerked forward at the speed of the cylinder during the period when it is clamped to the cylinder by a knife and before the cutting is completed. A compensator is provided for forming a loop in the supply web between the cutting intervals and for causing the loop material to be yielded to the cylinder as the web is jerked forward.

A feature of the invention has to do with the tractionand reduce the area for static action.

I consider my invention a very important improvement over present machines of this type,

particularly in its simplicity and inexpensive upkeep. a

The objects, features and advantages of this invention will be more completely set forth in the description and drawings forming a part of this application. a

In the drawings Figure 1 is a' vertical sectional view of the part of a machine which embodiesmy invention.

Figure 2 is a horizontal section taken substantially on the line 2--2 of Figure 1.

Figure 3 is a vertical section taken substantially on the line 3-3 of Figure 1.

Figure 4 is a, plan view of the lower portion of the mechanism shown in Figure l, and shows a carton blank passing from the conveyor chains over a pressure roll to the delivery belt.

Figure 5 is an enlarged detail sectional view showing a knife edge of the cutting roll in contact with an anvil bar of the laminating cylinder, and also shows how the knife blade is adjustably secured in said cutting roll.

Figure 6 and 6a is a detail view showing an anvil bar removed from its groove and a section of the laminating cylinder showing the groove.

Figure 7 is a longitudinal sectional view of a part of the laminating cylinder, showing the manner of clamping the anvil bars in position therein.

Figure 8 is a side view of the changeable cam device which is mounted on one end of the laminating cylinder shaft.

bar which is adapted to replace a regular anvil bar under certain conditions.

Figure 11 is a diagrammatic view illustrating the manner of arranging the film cutting bars for various sizes of cartoniblanks.

Figure 12 shows how the rubber surface of the laminatingcylinder may be provided with circumferential grooves, and

Figures 13, i4 and 16 areenlarged views of the friction tape mechanism; which illustrate more clearly-the construction and important functionso'fsame,

The mechanism shown in the drawings is only a part of a machine for applying a cellulosic ma terial patch over openings in envelopes and paper cartons as the complete machine includes means for-feeding i'the blanks-and carrying them along beneath an adhesive applying unit to the herein described a jcellulosic material applying mechanism. front. which said blanks are then projected into a stacking unit, in a manner quite similar to that shown in the Patent #l,969,106

before referred to, but, as my present invention only pertains to the cellulosic material applying unit of the machine, I hav'e'only shown the imthe diameter of'the as; 13,, the gename be adjusted so that the knife edges l1 will always contact a certain" point near thecenter line of the anvil bars at every revolution ofthe cylinder 25. I have arran ed four, anvil bars at pointsexactly 120, 60, 60 and 120- apart on the periphery of the cylinder 25, forthe purpose hereinafter described, and for the purpose of 'securing the anvil bars in place in their "respective grooves, I provide a removable lug 26 at each end of said bars so that aninwardly projecting lip 21on such lug-will engage-a bevelled end of an anvil bar to force same into snug position in a groove 24 when a screw 28 is turned to draw the lug into the position shown in Figure 7; The

screws 28 pass through holes 29 in: the lugs into I threaded holes in discs 30which are secured to the ends of the cylinder 25-byycap'screws3l.

An inwardly extending flange 32, at the. outer edge of said discs, is bevelled to correspond with the lip 21, for the following described purpose.

a As an important feature of m'y invention conprovedmeclianis m for that purpose, with portions of the frame members '-fA-A.', conveyor chains B B, and stacking belt C of said machine; v

In the several ,yiews, numeral 3 indicates a substantial shaft which extends across the machine ,and is journaled in bearings 4 and 5 in the frame -membersA-,-A,-and a third bearing 6 is provided forsaid shaft in a bracket 1 which extends inwardly from the right-hand frame member A, above'an extremely wide carton blank path, to provide additional support for the shaft '3. This shaft is continuously rotated in said bearings by a gear 6 which issecured at the outer end of saidshaft and driven by another gear (not shownywhich is a part of the machine drive transmission;

Another substantial shaft!) is mounted in vertically adjustable bearings 10, II and I2 directly above the shaft 3, and a gear- I3 is adjustably secured to the outer end of tliis shaft in position to mesh with the driven gear '8. The shaft 9 has an integral cylindrical portion I4 of en-' larged'diameter in which longitudinal grooves l5 are-provided, anda knife blade l6 has a bevelled, cutting .edge l1 projecting beyond the periphery of the cylinder l4 and is adjustably secured in the groove l5 between bars l8 and I9 sists of using a'resilient material having a certain degree of dry surface adhesion, such as vulcanized sheet rubber, and as it is' impractical and too expensive to vulcanize sheet rubber directly to the surface, of the cylinder, I ,con

ceived the idea of using a commercially manu- '7 facturedproduct whichconsists of a special sheet metal-to which a" sheet of high-grade rubber is .vulcanizedso as to make the twomaterials almost inseperable.

Alsection of this laminated material is curved to fit the peripheryof the cylinder 25, between each two adjacent anvil bars, and the rubber part 3.3 of. same is cut away at its longitudinal edges-to expose the edge portion of its sheet metal part (which edge I is then disposed in under the flanges 23 of the anvil bars to be securely held in place thereby when said anvil bars are clamped into fixed position. The ends of these rubber cover sections are then bevelled to fit snugly beneath the bevelled flanges 32 of thediscs so so as to be held" firmly in position on the cylinder.

which are clamped therein by a series of headless set screws 20. The bars l8 are divided into sections which each have a number of adjusting screws 2| passing therethrough into contact with the bottom of the grooves l5, and said sections each have a flange 22 on which' the inner edge of the-knife blade I6 rests,,so,.that when the set screws are loosened, the knife blade may be forced outwardly by the vscrews 2| to a desired point where said knife is then secured in position by tightening the screws 20 against the locking bar 19. I prefer tojprovide, three of the grooves l5, which are spaced an equal distance apart in the periphery of the cylinder l4, al-

though in some cases a greater or less number of grooves may be preferred.

The cutting edge 11 ofthe knife blade I6 is adapted to contact the smooth, hardened outer surface of 'a number of anvil bars 23 which are inserted in longitudinal grooves 24 in the periphery of a' cylindrical drum 25 whichis secured on the shaft 3 immediately below the knife carrying cylinder I4. The diameter of the cyl- Thisflmethod of providing a rubber coated surface for the cylinder 25 makes it an easy matter 1 to remove and replace any or all sections which may become damaged or worn, at comparatively low cost. 1 i v m Stationary shafts and. 35' form cross-bars between the frame members AA, and a pair of spaced castings 36 are adjustably clamped thereon by hinged dogs 31 havingset screws 38. The castings 36 have bearings for rails 39 and 40 over which a comparatively wide belt 4| is con-' tinuouslydriven through gears, 42- and 43',- and a series of idler rolls 44 are also journaled in the castings 36"to.sui p0rt the upper horizontal stretch of the belt 4|. Arms 45 are pivoted on the castings 36 and have bearings at one'en'd for'a driven shaft 46 on' which a roll 41 is mounted and adapted to 'be.forced upwardly toward the cylinder 26 by compression springs 48 which are carried in the projecting end 36 inder 25 is practical twice the diameter of the cylinder l4, and as the gear 8' is exactly twice of the castings 36. The roll 41 is driven by a gear 46' with a uniform peripheral speed identical to that of the cylinder 25, and cooperates with said cylinder in feeding the carton blank 49 from the conveyor chains 3-43 to the belt 4| while the Cellophane patch is being attached to said carton. It is occasionally'necessary to move the roll 41 away from the'cylinder 25, and

I therefore provide-small eccentric cams 50 on a shaft 6|, directly beneath the rear end of the arms 45, by which the roll 41Imay be forced away from the cylinder 25 when the cam shaft 5| is turned by a handle 52. Screws 53 are provided in the rear end of the arms 45 to contact the cams 50 and provide for adjustment of the required space between the roll 41 and cylinder 25.

Another pair of stationary shafts 54 and 55 form cross-bars between the frame members A-A, above the cross-bars 35 and 35', and a pair of spaced castings 56 and 51 are mounted on said cross-bars and have fixed bearings 50 and 59 for a driven shaft 60 on which a rubber roll 6| is mounted, while an adjacent rubber roll 62 is mounted on a parallel shaft 63 which extends through slidable bearings 64 and I55, and is oppositely driven from the shaft 60 by gears 66 and 61. Cams 68, similar to the cams 50, are mountedon a cam shaft 69 which is rotatably carried by the bearings 64 and 65, and adjusting screws I0, located in thecastings 56 and 51, contact the cams 60 to force the rubber rolls 6| and 62 together to a point 'determined'by adjustment of the screws I on the high point of the earns 08. A handle II on one end of the cam shaft 69 allows turning said shaft and the cams thereon to a point where the compression springs I2, which are disposed between the bearings 58-64 and 59-65, forces the rubber rolls apart when so desired. The rubber rolls BI and.62 are driven by a variable speed transmission device (notshown) which is adjustable to enable any desired length of web, within the capacity of the machine, to be paid out during one revolution of the shaft 3. The rolls BI and 62 are driven through a chain I3 and gears I4, which gears are splined on the shaft 60.

Any suitable means may be used for supporting a roll of cellulosicmaterial, or other kind of thin pliable material, such as glassine, etc., of desired width, above the rubber rolls 6| and 62, but I prefer to use the means shown in Figure 1, whereby the roll of thin material I is supported on a shaft I6 which is detachably held in the rear end of arms II which in turn are adjustably secured ona shaft 'I8 having bearings in upright extensions I9 on the cast- .ings 56. A depending arm 80 is fastened to one Figure 1). Small wheels 86 are carried by arms 81 which are hinged on a fixed shaft 80 so as to allow said wheels to rest by'gravity on the material I5 at a point preceding the cut-off point, to hold said materialagainst the cylinder surface 33 with just suificient pressure to allow the material to slip on said surface up to the point of cut-oif, which takes place when thebevelled edge ll of the knife I6 strikes the anvil 23. At

\ this point the material, while momentarily contacting the anvil 23 must instantly travel at the.

surface speed of the cylinder 25. In order to allow this momentarily increased speed of web feed I provide the loop-forming roll 85 which is caused to rise instantly in time with the cutoil' mechanism and thus yield up loop material momentarily during the cut-off operation, after which the roll 85 will slowly swing downwardly again to reestablish the loop in the cellulosic material in preparation for the next cut-ofl period.

The roll 05 rotates freely in arms '00 which are secured on a shaft 90, and said shaft is adapted to be oscillated by an arm 0| carrying a roller 02 in contact with a cam device 93 which is secured to the end of the shaft 3, and said cam device has a series ofprojections 94 thereon which are spaced to cause the shaft 90 to be oscillated so as to swing the roll 85 up and down in timed relation with the material cutting-01f operation, The cam device 93 is composed of three discs having identically shaped projections 00, and said discs are provided with a series of holes for dowel pins 95 and cap screws 96 with universal joints |0I and a gear I02 which is in driving contact with the gear 8 through an intermediate pinion gear, (not shown), and'said brush is adapted to sweep the surface of the cylinder 25- to prevent accumulation of foreign matter thereon. A sheet metal guard I03 is placed immediately above the brush 98 to prevent the nearby thin cellulosic material from being damaged by said brush.

For the purpose of holding the severed portion of cellulosic material in light contact with the rubber covered surface of the rotating cylinder '25, I prefer to locate a shaft I04 in parallel relation with the forward side of said cylinder. One end of said shaft has a bearing in one frame member A while the other end has a notch to engage a pin I05 in a sleeve I06 which is secured to an extension shaft I04 having a bearing in the other frame member A. A collar I06 holds the shaft I04 in place, but allows easy removal thereof when desired, and a gear I01 is secured to the outer end of the extension shaft I04 and is driven through an intermediate gear I01 by a ring gear I08 which is mounted on the inside of the gear 0. A pulley I09 has a key 0 which is slidable in a keyway II I in the shaft I04, and a flange I00 on said pulley hub is adapted to hold the pulley in place adjacent a metal plate H2 through which said shaft extends. The upper edge of the plate H2 is fastened to a yoke H3 which is adjustably secured to a cross-bar II4,

' and rearwardly extending arms H5 and 5 are pivotaliy mounted at the upper and lower edge, respectively, on said plate. Small pulleys H5 and H6 are journaled near the rear end of the arms H5 and I I6, and a small pulley I I9 is journaled on a stationary stud immediately above the pulley I00 while a similar small pulley H9 is iournaled on a stud I20 which is adjustably se cured in a slot I2I in the front edge of the plate H2. An endless tape belt I22 extends around the driven pulley I00 and over the four small idler pulleys into contact with the. forwardly may be adjusted separately to suitable positions to be moved along at'a speed identical with that of both cylinder surface and belt after severance.

As indicated by the large arrows in Figure'l3, an upwardadjustment of the stud I will cause the arms H5 and H6 to be drawn towards thesur face of the cylinder, and will also'serve 'to in-" crease the contact pressure of the belt- I22 thereand: H6 is limited by pins I 23 thereon which p'ro jectinto slots I24 in the'pla'te H2;

, In Figure 12, I have shown'how'a" series of shallow, circumferential-groovesJI25 may be provided in the rubber surface of the cylinder, betweenthe'anvil bars, for the purpose of allowing all toentr between the cylinder surface and the the material is fed to the .cylinder for cutting, including first means 'yieldably pressing'thei maon. The swingingmovement of the. arms. H5

ceilulosic sheet, in order to facilitate the pulling of said sheet from said surface.

In-Figure 10, I show a non-cutting barI I'Ihavinga longitudinal groove- H8 initsex'posed surface whichprevents the knife edge I'Tfrom cute ting the passing materi'al at that point, and'similar grooves are provided in the rubbercovered 1 j sections at points. X-XjseeFigufe .l) -for that same purpose, as willhereinafter be described, Non cuttingbars II! may be substituted for the anvil bars 23' as required. 1 v i To adapt {the machine 'for cartons of various lengths, within-certain limits, and in :order' to obtain correspondingly increased capacity with a the shorter carton. 'blan'ks; I have spaced the grooves. for-the cuttingknives and a'nvil bars in their respectivecyl'inders so that by arranging three different combinations of knives and anvils in said grooves, I can double or triple the short blankcapacity of the machine without increasing the RQP. M. -of same;

with the first combination, and conveyor from 13 inches to z'linches may, be handled by providing a cutting knife in groove 0 (see Figure ll), an anvil bar ingroove d, a non-cuttingbar I II in groove f and no' knives ingrooves a and I); while afsingle point is used -'on cam 93; or by providing non-cutting bars III in grooves 'e,- ,f

1 -and g even though knives are present in 'grooves a,,band c.

shown,but what I desire to cover by Letters Patcut is set forth in the appended claims.

I claim as my invention: 1. In a machine of the class described, means adjacent and cooperatingwith said rotating cylchains having feedflugs h 30 inches apart,-'blanks by which blanks are consecutively fed, means for,

applying severed lengths of thin mate ial to blanks O!1 'S8.id first feeding means, means for feeding material to the applying means, means for severing the material while on said applying means, mechanical means contacting and yieldably pressing the material against the applying means as it approaches the severing meansr drive! at the same surface speed as that 'oftheap lplying means, during severing.

:ably pressing the material -against thecylinder before and after-cutting and after it has passed. 20'

anvil barsremovably securedin grooves in'litsjciru V cuniferentialsurface, avtimed-rotating' cutting roll i coacting with s'aid- .cylindenand provided with. 30'

-means for feedingpafirstmaterial into contact.

, said rotating cylinder, means for feeding a seccoated blanks, and continuously operating fe'edingvmeans for feeding a web of thin cellulosic en means yieldably pressing the material against said applyingmeans after it has passedzthe-severing means, and means adapting the material which is approaching the severing me'ans to trav- 2. A device of theclass describedco'mprising a feeding cylinder, means for feeding blankss as to receive material fed from the cylinder, means for cutting the material whil'on the cyl o inder; a suply of materialand means :by which terial against the cylindenas said material'fapj r proa'ches 'cuttingposition means-synchronized I with the cutting means; for slackenin'g'thejmw terial .durin'g cutting, and second means, yield cutting positionand adapted' to allowslippage L of the material before cuttingandto: positively feed the material after ,cutting, said/second means being driven at the samesp'eed asthat of i 1 I the cylinder. I

' 3. In a machine 'of the' class describedi comprising a rotating cylinderhaving' longitudinal,

projecting longitudinal knife {edges adaptedf to j.

contact said anvil bars, sections ofisuitable=fric f tion material removably secured to the surface of;

saidcylinder between said anvil bars, andLa shallow longitudinal groove provided Tin some of said anvil bars and friction materialtov prevent con tact of said knife edges.therewith' when nocutting action is desired at said contact D'Oint. 4. In a machine of the, class de scri bed, hav-ing with a rotating cylinderg'a hardened surface-on said rotating cylinder, a cutting 'cylinderal'ocated inder, cutting knives'inq saidcuttirig cylinder adapted to out against said'hardened' surface-on 1 0nd material from a rollbetween saidcuttin cylinder and said rotatingv cylinder: for severing sa d second material into prdetermined'lengths, rollers for holdingsaid second material into con-- tact with said rotating cylinder-before severing and adapted to hold theunsevred second mate- A rial against the rotating cylinder "immediately, after severing to cause continuous forwardfeedeing of said second material, andmeans for holding said severed second material into contact with" said rotating cylinder after severing ,to deliver said second material into contact with said first material. r

5. A machine of the class described having timed feeding means for feeding spaced adhesive I material, comprising a rotating'cylinder against which said thin'cellulosic material is fed, longitudinal anvil bars located in the surface of said rotating cylinder, a rotating cutting roll for cutting off predetermined lengths of .thin cellulosic material coacting with said cylinder, said cutting roll being provided with projecting longitudinal, cutting knives contacting said anvil bars in said rotating cylinder, sections of removable friction material secured between said anvil bars on said rotating cylinder, means fo r.holding said thin cellulosic material in light contact with said sections of friction material, said last means and 6 said friction material being adapted to feed said thin cellulosic material forward in taut condition before severing through slippage by moving faster than said cellulosic material and positively feed same after severing into contact with said adhesive'coated blanks.

6. A paper fabricating machine having means for feeding spaced blanks past a rotating cylinder,

means for periodically creating a slack in said material between said feed rolls and said space, means for pressing said slow moving patching material into light frictional contact with the beyond the severing point to permit continuous slipping between the material and the drum before severing and to positively advance the material after severing, and means positively synchronized with the rotating knife and drum for causing the material approaching the drum to instantly travel at the same surface speed as the drum, as severing occurs.

10. In a patch applying machine, in combination, means for feeding a first material to be patched, a patch applier for rolling patches progressively into contact with the first material, means for driving the patch applier in unison with the first material feeding means,'means for supplying a web of patch material to the patch applier at a slower speed than the surface speed of the patch applier, means for cutting patches of predetermined length from the leading end faster moving cylinder surface before entering said space, and auxiliary forwarding means traveling at cylinder surface speed for holding said patching material in light frictional contact with said cylinder after passing said space.

7. A machine of the class described having timed feeding means for feeding spaced adhesive. coated blanks, means for feeding and delivering a thin pliable cellulosic material from a web to a rotatingcylinder, means cooperating with said rotating cylinder for severing a sheet from the end of said web, means for holding said sheet into contact with said rotating cylinder, said means comprising endless belts passing from a driven pulley on an adjacent shaft to small idler pulleys mounted on the outer ends of hinged arms which diverge to allow said belts to engagethe downwardly moving surface of said rotating cylinder,

an adiustable belt tightening device arranged to independently increase or decreasethe tension of said belts while simultaneously drawing said diverging arms toward said cylinder to press said idler pulleys proportionately against said surface with any desired contact, pressure for the purpose described.

8. In a machine of the class described, means by which blanks are consecutively fed, means for applying severed lengths of thin material to blanks on said first feeding means, means for feeding material to the applying means, means for severing the material while on said applying means, .a' pair of rollers contacting and yieldably pressing the material against the applying means as it approaches the severing means, a pair of means yieldably pressing the material against said applying means after it has passed the severing means and driven at the same surface speed as that of the applying means and acting before severing to allow slippage of the material on the drum, and after severing to positively advance the material.

9. In a machine having means for feeding an article, a drum for advancing severed lengths of thin, pliable material for registration with and application to a fed article, a rotary knife cooperating with said drum to sever the material while on the drum, means for feeding the material to the drum, means yieldably pressing the material against the drum as it approaches the severing point to hold the material taut, a belt positively driven in synchronism with the drum and pressing the material against the drum at a point tion to the first material after severance, and means for positively driving the auxiliary feeding means in, unison with the surface speed of the patch applier.

11. In a patch applying machine, in combination, means forfeeding at constant speed a first material to be patched, a patch applier for rolling patches progressively into contact with the first material, means for driving the patch applier in unison with the first material feeding means, means for supplying a web of patch material to the patch applier at a slower speed than the surface speed of the patch applier, means for cutting patches of predetermined length from the leading end of the patch web, auxiliary feeding means bearing lightly and with yielding force against the patch applier for cooperating with the patch applier to exert a slip drag on the leading end of the patch web as the web is being supplied to the patch applier before severance and to carry the patch forward without slipping for application to the first material after severance, and means for positively driving the auxiliary feeding means in unison with the surface speed-of the patch applier.

'12. In a patch applying machine, in combination, means for feeding a first material to be patched, a patch applier for rolling patches progressively into contact with the first material, means for driving the patch applier in unison with the first material feeding means, 'means'for supplying a web of patch material to the patch patch forward without slipping for application to the first material after severance, and means for positively driving said belt means inunison with the surface speed of -the-patch applier.

13. In a patch applying machine, in combination, a patch applying cylinder for rolling patches progressively into contact with a material to be patched, means for driving the patch applying cylinder at a predetermined surface speed, means for positively feeding a web of patch material to ing successive patches from the patch web on the cylinder, auxiliary feeding means bearing light- 1y against the cylinder for cooperating with the cylinder to exert a slip drag on the leading end" of the patch web before severance and to carry the patch forward without slipping after severance, and adjustable means for setting,the pressure of the auxiliary feeding means against the cylinder to any value desired throughout an available pressure range of substantial extent.

14-. In a patch applying machine, in combination, a patch applying cylinder for rolling rial to be patched, means for driving the patch applying cylinder at a predetermined surface 'speed, means for positively feeding a web of patch material to the cylinder at a lesser speed, means for severing successive patches fromthe patch web on the cylinder, belt means bearing lightly against the cylinder for cooperating with the cylinder to exert a slip drag on the leading end of the patch web before severance and to 4 carry the patch forward without slipping after severance, and adjusting means for changing the belt tension and thereby altering the pressure of the belt against the cylinder.

15. In a patch applying machine, in combina-,

" tion, -a patch applying cylinder for rolling patches progressively into contact with a material to be patched,means for driving the patch applying cylinder at a predetermined surface speed,'means for positively feeding a web of patch material to the cylinder at a lesser speed, means for severing successive, patches from the patch web on the cylinder, belt means bearing lightly against the cylinder for cooperating with the cylinder toexert a slip dragon the leading end of the patch web before severance and to carry the patch forward without slipping after severance, upper and lower guide rollers supporting the opposite ends of the active or cylinder engaging stretch of the belt, and. swingable' r aacig e n the cylinder at a lesser speed, means for sever-' progressively into contact with amaterial to patches progressively intocontact with a matebe patched, means for driving the patch applying cylinder at a predetermined surface speed, means for positively feeding a web of patch material to the cylinder at a lesser speed, means for severing successiye patches from the patch web on the cylinder, apair of belts bearing lightly against the cylinder for cooperating with the cylinder to exert a slip drag on the leading end of the patch web before severance and to carry the patch forward without slipping after severance, guide means for the respective belts, and means for individuallyadjusting the guide means -of each belt as a unit laterally. of the path of web travel.

18. In a patch applying machine, in combination, a patch applying cylinder forrolling patches progressively into contact with a material to be patched, means for driving the patch applying cylinder at a predetermined surface speed, means for positively feeding a web of patch material to the cylinder at a lesser speed, means for severing successive patches from the patch webon the cylinder, a pair b-fabelts bearing lightly against the cylinder for cooperating with the cylinder to exert a slip drag on the leading end of the patch web before severance and to carry the patch forward without slipping after sev- I erance, guide means for the -re spective belts,

. means for individually adjusting the guide means cf each belt as a unit laterally of the path of web travel, andcor'nmon driving means for driving the belts in unison with the cylinder and with one another. I

19. In a patch applying machine, in combination, a patch applying cylinder, means for driving the cylinder at predetermined speed, means for payingout patch web material to the cylinder at a predetermined lesser speed. rotary cutting means cooperative with the cylinder for cutting one or more patches from the web in each revolution of the cylinder as desired, loop forming arms supporting the guide rollers and arranged to increase the pressure of the rollers against the cylinder in response to increase of belt tension.

16. In a patch applying machine, in combination, -a patch applying cylinder for rollingpatches progressively into contact with a material to be patched, means for driving the patch applying cylinder at a predetermined surface speed, means for positively feeding a webv of patchmaterial to the cylinder at a lesser speed,

means for severing successive patches from the 7 patch web on the cylinder, belt means bearing lightlyagainst the cylinder for cooperating with the cylinder to exert a slip drag on the leading end of the patch webbefore severance and to I carry the patch forward without slipping after severance, upper and lower guide rollers supporting the opposite ends of the active or cylinder engaging stretch of the belt, and upper and lower pivoted arms supporting the respective rollers, said upper arm diverging slightly from the common tangent plane of the cylinder and the upper guidevroller and having its pivot located slightly above said plane, and guide means for directing a lower inactive stretch-of the'belt means away from the lower guide roller'in an upward direction and close to the pivot of the lower pivoted arm so that the lower arm will be biased lightly toward the cylinder by .belt' tension. e

1'7. In a patch applying machine, in combinameans interposed between the paying out means and the cylinder to form a loop in the web be tween each two successive cutting operations and to yield up loop material as each cutting operation is performed,- and cam means controlling the operation of the loop forming means comprising a cam. shaft,-a plurality of cams of like contour thereon, an actuating member operable by the cams, and means for securing the cams in different positions of relative adjustment to cause the actuating member to be operated. one or more times ineach revolution of the cylinder as required.

20.'In apatch' applying machine, in combination, a patch applying cylinder, means for driv ing the cylinder at predetermined speed, means for paying out patch web material to the cylinder at a predetermined lesser speed, rotary cutting means cooperative with the cylinder for cut-ting'one or more patches from the web in each revolution of the cylinder as desired, loop forming means interposed between the paying out means and the cylinder to form a loop in the web between each two successive cutting operations andto yield up loop material as each cutting operation is performed, and cam means ,con-

trolling the operation of the loop forming means com-prising a cam shaft, a plurality of cams of like contour thereon, anactuating member 'operable by'the cams, and means for fixing the cams in different predetermined angular relations to oneanother to c'ause'the.actuatingmemtion, a patch applying cylinder for rolling patches each ting means cooperative with the cylinder for cutting one or more patches from theweb in each revolution of the cylinder as desired, loop forming means interposed between the paying out means and the cylinder to form a loop in the web between each two'successive cutting operations and to yield uploop material as each cutting operation is performed, and adjustable means for controlling the operation of the loop forming means and varying the number of loop forming operations per revolution of the cylinder to cause the loop forming means to be operated once for each cutting operation and in timed relation thereto.

22. In a patch applying machine, in combination, a patch applying cylinder, a rotary cutter cooperative therewith and adapted to be equipped with one or more cutting knives, said rotary cutter having an effective diameter which is an aliquot part of the diameter-of the cylinder, said cylinder including grooves for receiving anvil bars to cooperate with the rotary cutter, or for receiving non-cutting bars as required, and bar clamping means including means operable to facilitate the rapid replacement of the anvil bars by the non-cutting bars and vice versa.

23. In a patch applying machine, in combination, a patch applying cylinder, a rotary cutter cooperative therewith and having an effective diameter which is an aliquot part of the diameter of the cylinder, and means for removably securing cutting knives inselected positions on said rotary cutter, said cylinder being formed with a longitudinal groove in the periphery thereof to permit'a knife to pass without cutting in a region of the cylinder which would otherwise be engaged by the knife but upon which no cutting is ever required.

24. In a patch applying machine, in combination, a patch applyingcylinder, a rotary cutter cooperative with the cylinder; whose effective diameter is an aliquot part of the diameter of the cylinder, and means for removably securing cutting knives in selected positions'on said rotary cutter, said cylinder including anvil bar holding recesses, an anvil bar in at least one of said recesses and one or more non-cutting bars in the remainder thereof, and said cylinder being formed with longitudinal grooves in the peripherythereof to permit knives to pass without cutting in regions of the cylinder which would otherwise be engaged by the knives butwhich no cutting is ever required.

25. In a patch applying machine, a patch cutting and applying cylinder comprising a cylinder body, a plurality of anvil bars secured to said body, and a plurality of laminated traction segments secured to the body by the anvil bars, each segment comprising a base layer of metal and a surface layer of rubber vulcanized thereto.

.26; In a patch applying machine, a patch cutting and applying cylinder comprising a cylinder bodyplaminated traction segments each comprising a base layer of metal and a surface layerof 1 rubber vulcanized thereto,janvil bars interposed between the edges of adjacent segments and formed with flanges to overlie the adjacent marginal portions thereof, and means for clamping the anvil bars to the cylinder body.

27. In a patch applying machine, in combination, a patch cutting and applying cylinder, a rotary cutter cooperative therewith, means for removably securing cutting knives in selected positions on said rotary cutter, said cylinder including a cylinder body, laminated traction segments each comprising a base layer of metal. and

a surface layer of rubber vulcanized thereto, and

bars interposed between the edges of adjacent segments and formed with flanges to overlie adjacent marginal portions of the segments, a portion at least of said bars being cooperative with theknives to effect cutting, at least one of said segments being formed with a longitudinal groove in the periphery thereof to permit a knife to pass without cutting in a region of the cylinder which would otherwise be engaged by the knife but upon which no cutting is ever required.

28. In a patch applying machine comprising a patch applying cylinder, in combination, a cylinder body, curved traction segments on the surface thereof, clamping bars interposed between adjacent segments and having overhanging shoulders to overlie straight marginal portions of the segments, and means for securing the segments and the bars in place'on the cylinder body comprising a disc-like member, means-removably securing the disc-like member to the cylinder body,- said disc-like member having notches in the periphery thereof and being formed with arcuate flanges between said notches to overlie curved marginal portions of the respective segments, clamping blocks inserted in said notches and having shoulders arranged to overlie end portions of the respective clamping bars, and

means for removably securing the clamping blocks to the disc-like member.

29. In a patch applying machine, in combination, a patch cutting and applying cylinder, and a rotary cutter cooperative therewith, said cutter including a cylinder having a longitudinal groove in the periphery thereof, a plurality of angle blocks set in the groove, each including a base portion disposed in the base portion of the groove, a body portion extending upwardly therefrom and an adjusting screw threaded through said bodyportion, a cutter blade set in the anglesof said blocks, and clamping screws threaded through the cylinder and clamping the blade and blocks in place.

30. In a patch applying machine, in combination, a patch applying and cutting cylinder, a

rotary cutter cooperative therewith to cut suecessiv'epatches from a web of patch material, means for driving the cylinder, means for paying out a web of patch material to the cylinder at a lesser speed than the surface speed of the cylinder, and meansbearing lightly against the cylinder before the point of severance for maintaining the leading end of the web constantly in frictional contact-with the cylinder.

31. In a patch applying machine, in combina-.

tion, a patch applying and cutting cylinder, a rotary cutter cooperative therewith to cut successive patches from a web of patch material, means for driving the cylinder and the cutter at the same surface speed, means for paying out a web of patch material to the cylinder at a lesser-speed than the surface speed of the cylinder, means. for causing the cylinder frictionally to engage and draw forward the leading end ofthe web which extends beyond the point of cutting and to carry the cut patch forward without slipping same surface speed, means for paying out.a web of patch material to the cylinderat a lesser speed than the surface speed of the cylinder, means for causing the cylinder frictionall'y to engage and draw forward the leading end of the web which extends beyond the point of cutting and to carry the cut patch forward without slipping after it is cut, and idler roller means bearin lightly against the cylinder in position to'engage the web before it reaches the cutting point-for constantly maintaining the web in frictional contact with the cylinder.

33. In a patch applying machine, in combination, means for feeding a first material to be patched, a patch applier for rolling patches progressively into contact with the first material,

means for driving the patch applier in unison with the first material feeding means, means for supplying a web of patch material to the patch applier at a slower speed than the surface speed of the patch applier, roller means for holding the web of patch material in light frictional contact withsaid patch applier at all times, means coacting with said patch applier for cutting patches of predetermined length from the leading end of the patch web, and means for. holding the leading end of the patch web in slippin contact with the said patch applier before severing. said means after severing being adapted to carry the patch forward without slipping for'application to the first material.

34. In a machine of the class described, a rotating cylinder comprising a body formed with longitudinally extending grooves, longitudinal anvil bars removably secured in the grooves, a retary cutter coacting with said cylinder and provided with projecting longitudinal knife edges which are adapted to contact said anvil bars, means for driving said cutter and cylinder at the same surface speed, and rigid cylinder segments having work engaging surfaces of suitable friction material removably attached to said cylinder body and extending between said anvil bars.

35. In a patch applying machcine, in combination. means for feeding a first material to be patched, a patch cutting and applying cylinder for rolling patches progressively into :contact with the first material, means for driving the patch cutting and applying cylinder in unison with the first material feeding means, means for supplying a web of patch material to the patch cutting and applying cylinder at a slower'speed than the surface speed of said cylinder, and a rotary transverse cuttercooperative with the patch cutting and applying cylinder, said cylinder including an arcuate traction segment whose sur- "face is divided longitudinally by a multiplicity of circumferentially extending grooves for facilitating release of a patch to the first material,

and an unbroken longitudinally extending anvil portion adjacent the trailing boundary of saidsegment for cooperating with the rotary cutter.

36. In a patch applying machine, in combination, a patch cutting and applying cylinderand a rotary transverse cutter cooperativ'eetherewith, said cylinder including an arcuate traction segment whose surface is divided longitudinally by a, multiplicity of circumferentially extending grooves for facilitating patch release, and an unbroken longitudinally extending anvil portion adjacent the trailing boundary of said segment-for cooperating with the rotary cutter.

EDWIN G. BTAUDE.

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