US3202064A - Machine for applying cord handles to paper bags - Google Patents

Description

Aug. 24, 1965 R. w. KENNEDY MACHINE FOR APPLYING CORD HANDLES T0 PAPER BAGS Filed July 30, 1962 3 Sheets-Sheet 1 INVENTOR. REEcE W. KENNEDY, BY 114 I Q ATTORNEYS.

1965 R. w. KENNEDY 3,202,064

MACHINE FOR APPLYING CORD HANDLES T0 PAPER BAGS Filed July 30, 1962 5 Sheets-Sheet 2 Lmr 0 Q 1 1 6 Q 6 O Q INVENTOR I59 fll/ Resce WKENNEDY, 7

ATTORNEYS- 1965 R. w. KENNEDY 3,202,064

MACHINE FOR APPLYING CORD HANDLES TO PAPER BAGS Filed July 50, 1962 5 Sheets-Sheet 5 INVENTOR. REECE W. KENNEDY,

United States Patent LES This invention relates to a machine for forming paper bags, and has to do more particularly with a machine capable of applying cord handles to paper bag structures as an incident of their fabrication so as to produce finished bags of the type commonly known as shopping bags.

The term shopping bag is characteristic of a paper receptacle consisting of a heavy duty paper bag, usually formed from 'kraft paper, having a pair of opposing cord loops or handles projecting upwardly from its upper edges. Such handles make carrying the bag and its contents a great deal easier; and the widespread public use of this type of bag in past years adequately portrays its usefulness and desirability.

In general, such bags utilize handles composed of short lengths of cord stapled or otherwise secured to the opposite sides of the bags. By and large, the cord from which the handles are formed is made by tightly twisting a relatively narrow width of paper into a tightly wrapped strand. Preferably, the cord handles, which are first formed into U-shaped loops, are then stapled or otherwise secured to a heavy paper or paperboard backing strip, whereupon the handle strips are either secured directly to the inside upper edges of the bag walls, or else secured beneath an inturned cutf formed along the upper edge of the bag. Such cuff is normally provided with spaced apart pairs of slits through which the cord handles may protrudegand after the backing strip is inserted beneath the cuff with the handles extending upwardly through the slits, the cuff is adhered to the bag walls. The use of the cuff construction just described is obviously'preferable in that it more securely attaches the handles to the body of the bag and enhances the load carrying capacity of the structure. However, to date, the formation of such cuffs and the insertion of the backing strips has been a hand operation, and as such has added to the cost of the bags.

Accordingly, a principal object of the present invention is the provision of an automatic machine which will form a paper web into a bag blank having a cuff defined therein, and will automatically insert and secure a pair.

of cord handles to the bag blank in the proper position.

A further object of the instant invention is the provision of a practical machine which will reliably perform the handle forming and attaching operation at the high working speed generally contemplated by the paper bag in dustry.

Yet a further object of the instant invention is the pro vision of an integrated bag making machine which converts rawmaterials, namely paper and paperboard webs,

into completed bag structures incorporating carrying handles.

The foregoing, together with other objects of the invention which will be set forth hereinafter or ascertained from a study of the following specification, are accornplished by that construction and arrangement of parts of which an exemplary embodiment will now be described.

Reference is now made to the drawings forming a part of this application, wherein similar reference numerals denote like parts throughout the several views,

' 3,262,064 Patented Aug. 24, 1965.

FIGURE 2 is a simplified fragmentary plan view illustrative of means for forming the cord handles.

FIGURE 3 is a fragmentary perspective view showing FIGURE 6 is a plan view of a part of the machine illustrating the mechanism for advancing the bag forming Web and acting upon such web to convert it into individual bag structures.

FIGURE 7 is an enlarged vertical sectional view taken along the line 77 of FIGURE 6.

FIGURE 8 is an enlarged vertical sectional view taken along the line 88 of FIGURE 6.

FIGURE 9 is a fragmentary plan view of the top portion of a bag formed in accordance with the instant invention illustrating the position of the parts immediately prior to the infolding of the cuff.

FIGURE 10 is a perspective view of the bag length subsequent to its severance from the web and prior to the formation of the longitudinal seam.

FIGURE 11 is a perspective view of the completed bag immediately prior to its passage into the bottom forming portion of the machine.

FIGURE 12 is a simplified side elevational view of a modification of my invention.

Briefly, in the practice of my invention, I contemplate a machine which will continuously advance a web of bag forming material and, as the web is advanced, will score and slit one edge of the web so that it may be later insupply of cord handles already secured to a paper backing strip is produced by a conventional handle forming device; but in accordance with the instantinvention, such preformed cord handles will be deposited onto the advancing Web in alignment with the slits in the cuff. The machine will then automatically infold the cuff about the handles, so that at this juncture the advancing web has a longitudinally extending cuff along one edge thereof with cord handles projecting therefrom at spaced apart intervals. At the next machine station, the paper web is severed transversely into bag lengths each length having two handles secured thereto. Each of the individual lengths so formed is then folded transversely intermediate the two handles, but due to the point at which the bag lengths are severed from the advancing web, one side of each bag length will be longer than the other, thereby providing an attachment flap which is folded over and adhesively secured to the shorter fiap to provide a bag tube having a longitudinalseam. At. this juncture, the tubed structure is advanced into a final machine station where a conventional bottom forming mechanism acts to form a fiat folded bag bottom at the end of the bag tube opposite the handles.

Referring now to FIGURE 1 of the drawings, at the leading end of the machine a roll stand 10 mounts a roll 11 of bag forming material, such as kraft paper. In the embodiment shown, abrake roller 12 rides against the web 11 and serves to prevent it from unwinding too rapidly. As the bag forming Web 11a is withdrawn from the roll, it is passed about a series of idler rolls 13, 14, 15, 16 and 17 which serve to guide and properly tension the web. It will be of course understood that any conventional arrangement of these rolls may be employed.

The weblla next passes over the roller 18 which brings it into contact with the score wheel 19, the score wheel serving to make a continuous score line parallel to the edge of the web 11a, such score line being shown at 19a in FIGURE 9. As will be more fully explained hereinafter, the paper web is subsequently folded along the score line 19a to form the cuff which surrounds the upper ends of the finished bag.

Upon passage beyond the score wheel 19, the paper Web next passes around the roller 20 where it is brought into contact with the timed cutter wheels 21 and 22. As seen more clearly in FIGURES 3 and 4, each of the cutter wheels21 and 22 is provided with spaced apart pairs of knives 21a and 21b, and 22a and 22b, respectively. Aswill be understood from examining FIGURES 3 and 4, the knives 21a and 21b each make a short cut which is angularly disposed with respect to the longitudinal edge of the web 11a, while the knives 22a and 22b each make a short slit which is parallel to the side edge of the paper web and, in fact, lies along the score line 19a. Referring again to FIGURE 9, the slits made by the knives 22a and 22b have been indicated at 220, such slits being connected at one end to the diagonally disposed slits 21c.

Referring again to FIGURE 4, it will be noted that the cutter wheel 21 is mounted on a shaft 23 which extends transversely of the paper web 11a; and wheels 24 and 25 are mounted on the opposite ends of shaft 23. The wheel 24 mounts a small printing block 24a which may be used to imprint the name of the manufacturer on the bag web. The wheel 25, on the other hand, may mount a U-shaped cutter 25a which acts to cut a small semi-circular opening in what will be the bottom end of the finished bag. As will be understood by the skilled worker in the art, such opening or cutout permits the bottom forming mechanism to gauge and fold the wall of the bag underlying the cutout. Referring momentarily to FIGURES l0 and 11, the block 24a will define an imprint 241), whereas the U-shaped cutter 25a will define the semi-circular cutout 25b.

Referring again to FIGURE 1, it will be noted that upon passing beyond the cutter wheel 22, the web 11a is ready for the application of the handle elements. To

this end, the web passes around the roller 26 which brings it into contact with the glue wheel 27. The glue applying mechanism is conventional and comprises a roller 28 the periphery of which revolves through a glue pot 2.9. Adhesive is transferred from the periphery of the roll 28 to the pad on glue wheel 27, and from there it is transferred in proper registry to the edge of the web 11a. The bag web 11a next travels upwardly to the mainbed of the machine where it passes between driving rollers 34) and 31. It is at this point that the cord handles, which have previously been secured to a paper backing strip, are deposited on the web 11a in registry with the slits 21c and 22c.

The device which forms the cord handles and applies them to the backing strip is of well known construction, and therefore has only been shown generally in FIGURE 2 of the drawings and will be described briefly at this time. It includes a rectangular frame 33 mounting a shaft 34 which in turn mounts a roll of cord forming paper tape 35. The tape 35a is fed from the roll, through a hollow bearing and into the forming die 37. It will be understood that through the motor 38 and drive means shown generally at 39, the entire frame 33 is rotated about its longitudinal axis. Thus, as the web 35a enters the forming die 37, the spinning action of the frame 33 serves to twist the tape 35a into a continuous length of twisted cord 35b which emerges from the die 37. The cord 35b is advanced by means of a feeding mechanism (not shown) within the housing 40 forwardly into the U-shaped die 41, which loops the cord into a handle defining bail.

A roll 42 of paper or paperboard backing material is mounted in advance of the die 41 and acts to deliver a strip 42a of backing material which will be intermittently fed to the die at timed intervals by means of the feeding roll 42b. Four spools of wire are indicated at 43, which strip 42a.

also have rubber inserts 46a.

feed into the stapling mechanism 44, the stapling mechanism acting to sever the lengths of wire into staples which secure the cord handles to the backing strip. The backing strip 42a with the handles attached will be fed forwardly by means of drive roll 42!), which will act to deliver the leading edge of the backing strip between the drive rolls 3% and 31. It will be understood of course that the backing strips and their attached handles will be fed through the machine in timed relation to the move ment of the bag web Ila which is also advanced by the drive rolls 3%) and 31. A reciprocating knife 45, also timed to the movement of the backing strips, acts to sever the continuous strip 42a into individual lengths.

Referring to FIGURE 9, the backing strip 42a and the completed cord handle 35b is shown stapled to the backing strip, at 43a. The backing strip and handle are also properly oriented with respect to the bag web Ila; and it will be noted that the top edge of the backing strip 42a substantially coincides with the score line 19a, with the opposite legs of the cord handle crossing the score line 1% at the juncture of the lines of cut 210, 22c.

When the web 11a and the backing strip 42a emerge from between the drive rolls 30 and 31, they next pass between pressure rolls 46 and 47 which, as will be clearly seen in FIGURE 5, are formed with spaced apart rubber inserts 46a so positioned that they will exert pressure upon the joint of the cord handles 35b and the backing This construction permits the pressure rolls 46 and 47 to concurrently advance the web 11a and the juxtaposed handle structure in spite of the raised portions encountered at the cord 35b. In the embodiment illustrated, a second set of pressure rolls 43 and 49 have been provided which are similar to the rolls 46 and 47, which It will be understood, of course, that while the inserts 46a have been stated to be formed of rubber, any other relatively soft and compressible material may be employed.

Fastened to the end and concentric with the roll 49, I provide a rotary kicker 50 which has a folding finger 50a which moving in timed relation to the advancing blank and oriented to project upwardly within the handle bails to initiate infolding of the cuff portions lying between the opposite legs of the handle. The kicker 50 also has a trailing edge 50b which contacts the cuff in the area immediately beyond each handle and folds such portion upwardly. The upwardly folded parts of the cuff are engaged by a sweep 51; but immediately prior to the infolding of the cuff portions by the sweep, a nozzle 52 deposits a stripe of adhesive along the edge of the bag web, whereupon the cuff portions are infolded and adhered.

Referring now to FIGURE 6, it will be seen that the pressure roll 46 is mounted on a shaft 53 which extends transversely with respect to the machine frame, the shaft stantial slack in the area between sprocket 54 and 56 and hence will lie on the handles 35b extending outwardly from the paper web Ila. The chain thus serves as a hold-down means for the handles as the rotary kicker 50 and the sweep 51 act upon the cuff portions at the edge of the bag web.

Upon the passage of the web 11a beyond the sweep 51, the cuff is essentially completely formed. From this point until the beginning of the bag tubing operation, it is only necessary to provide a series of hold-down rolls to assist in advancing the web. For example, in the embodiment illustrated, I have provided a pair of angularly disposed idler wheels 58 and 59, together with the sets of driven pressure rolls 60, 61 and 62, 63, the uppermost roll in each set having inserts of a softer material and hence comparable to the inserts 46a already described. It will be understood, of course, that as many pairs of rolls will be provided as required to deliver the webs to the ba forming station; thus additional pairs 70 may be provided.

The bag tubing station effectively begins with the roll set 71, 72 the roll '71 being provided with a lmife blade 71a extending transversely across the entire width of the bag web 11a. This knife acts to sever the continuous web 11a into a series of individual bag lengths suitable for forming into tubular bag bodies of the desired size. It will be understood, of course, that the roll set 71, 72 will be rotated in timed relation to the movement of the web 11a; and exemplary drive means for such purpose will be described hereinafter.

Upon the severance of a unit length of bag forming materials from the advancing web, the kicker wheel 73 and coacting bottom roller 7 4 act to advance the severed length of the webup the inclined conveyor section 75. A cam operated tucker 76 will swing downwardly and, upon contact with the severed length, acts to fold or buckle it near its center and insert the folded edge between the conveyor members 77 and 78. The conveyor member 77 and 78 serve to transfer the folded bag web downwardly for movement between the conveyor elments 759 and 80 which deliver the folded bag web against the stops 81, as shown in FIGURE 6. At this juncture, the folded bag length is ready to be formed into a tube. I now provide conveyor means indicated generally at 82 which serve to move the folded bag length at right angles to its prior path of travel. The conveyor means comprises the parallel shafts 83 and 84 each of which mounts a pair of sprocket drives indicated at 83a, 83b and 34a, 84-h, respectively. The sprocket drives 83a and 84a drive a link chain 85, while the sprockets 83b and 84b drive a similar link chain 86.

Referring now to FIGURE 7, I have shown an enlarged cross-sectional view of a portion of the link chain 85. It comprises a plurality of pairs of link members 87 pivotally joined together by means of pins 88. At spaced intervals along both the chains 85 and 86, I provide a series of special bag clamping means, each of which comprises a clamping member 8?, together with an actuating member 90, both configured as shown in FIGURE 7. Each of the members 89 is pivotally mounted on one of the pins 83, between the pairs of links 37. Each of the members 39 is urged to the position shown in FIGURE 7 by a spring means 91. The actuating member 90 will be mounted on the machine frame beneath the chain 85 and 86 at points determined by the leading edge of the folded length of bag forming material when it is in the position shown in FIGURE 6. At this point, the bottom edge of the clamping members 89 will strike the inclined portions of the corresponding actuating member 99, cansing the clamping member to rotate about the pin 88 in the direction shown by the arrow in FIGURE 7. When the member 89 passes beyond the actuating member 9%, it will return under the urging of spring 91 to the position shown in FIGURE 7. During the time when the member 8% is in the raised position, a folded length of the bag web will have been conveyed into the position shown in FIGURE 6, so that when the clamping members 89 return to their original closed position, they will grip the bottom or leading edge of the folded web. It will of course be understood that, any other conveyor means could be utilized, such as extending the chains 85 and 86 beyond the con veyor element as and providing lugs thereon which would serve as pushers.

Referring now to FIGURE 8, which is a side elevational view of the second machine section, the bag will be moving from right to left, passing first over the scoring roll 92 having a peripheral scoring rule 92a. It will be noted that the roll 92b against which the scoring roll 92 bears is provided with a peripheral groove 920 which coacts with the rule 92a. The line of score made by the rule 92a has been indicated in FIGURE at 92d, and the portion of the bag web lying outside the score line 92d is indicated by the reference numeral 922. Thus, the bag web will have a fold line 76a along its one side edge made by the of rolls es -s6, 67-68, and

6 tucker 76, and the opposite side edge of the bag length will be defined by the score lin'e 92d, with the part 926 serving as a longitudinal seam when infolded and adhered to the opposite side edge of the folded web.

Referring once again to FIGURE 8, the folded bag length next passes over the glue roll 93 and beneath the pressure roll 94 which coact to apply a continuous stripe of adhesive to the seam forming part 92e from the glue pot 95. The flanged folding roll 96 coacts with underlying roll 97 to fold the seam forming flap 922 downwardly for engagement by sweep $55 which completes the infolding of the seam forming part, whereupon the pressure rolls 99 and 100 serve to apply positive sealing pressure to the seam so formed.

Referring again to FIGURE 6, it will be noted that roll 92b is mounted on a shaft ltd which also mounts a drive roll 1112. Similarly, drive wheels 1%, 165, and 167 are mounted on the shafts 104, 106 and 1118, respectively, and hence coact with their opposing counterparts-the rolls 94, 96 and 99to assist in advancing the folded and now tubed bag blanks to the next machine section.

The next machine section will comprise the bottom forming section, indicated generally at 1159, wherein the bottom end of the tube bag will be acted upon by conventional bottom forming mechanism which folds and glues the bottom edges of the bag to provide a so-called pasted bottom or satchel bag. Many such bottoming devices are commercially available; and reference is made to Davis Patent 2,847,914 for details of an exemplary bag bottoming machine.

The driving and timing of the components of the machine may be varied or adjusted to suit the particular operating requirements. However, for exemplary purposes only, I have illustrated in FIGURE 6 one arrangement which has been found well adapted for normal operating conditions. Thus, I utilize :a single electric motor, indicated at 110, of suitable size and capacity to power all of the operating components. The motor, by means of the power take-off belt 119a, drives the shaft 111 on one end of which is located the sprocket gear 112. The sprocket gear 112, through chain 113, drives the sprocket 114 and its shaft 115 which mounts the drive roll 31 previously described. The gear 116 mounted on the end of the shaft 115 acts to drive the gear 117, thereby driving the roller 31) also previously described. The gear 118, through the chain 119 serves to drive the shaft 53 which, in turn, acting through chain 121), serves to drive the shaft 121. At 122 and 123, I have indicated two additional chains driven by the shaft 121, which are operative to drive the shafts 124 and 57. The shafts 1215 is driven by means of a chain 126 connecting the shafts and 123. The gears 127, 128 and 129 serve to drive the lower pressure rolls 59, 61 and 63, shown in FIGURE 1.

The shaft 111 which, as described earlier, is directly driven by the motor 111 extends transversely across the machine and on its opposite end mounts the gear 130. Through the gearing arrangement shown generally at 131, the pairs of rolls 65-66, 67-68, and 697i) are all driven. This same arrangement also serves to drive the knife roll 71, the kicker wheels 73 and 74, and the tucker 76. Shaft 132, which is also driven by the gearing arrangement shown in 131, mounts a sprocket drive 133 on its opposite end, which through the chain 134 is operative to drive the conveyor members 77, 78, 79 and 8h.

The components of the machine which form the length of bag material into a tube are also driven by means of the motor 110. Thus, the shaft 135 driven by the gearing arrangement 131 through the meshing beveled gears 136 and 137 acts to drive the shaft 138. The shaft 138 in turn drives the shafts 191 and 103 by means of the sprocket drive arrangements 139 and 149. Similarly, the sprocket drive 141 and 142 serve to impart rotation to the shafts 106 and 108, respectively. Finally, the gears 143, 144, 145 and 146 (located on the shafts 101, 103, 106 and 108, respectively) drive rolls 91, 93, 97 and 100, all as '27 seen in FIGURE 8, and through the sprocket drive 147, the conveyor mechanism 82 is operated.

As should now be readily apparent, the instant inven-v tion provides mechanism and procedures for the continuous production of shopping bags having opposing handles the ends of which are securely anchored beneath a cuif at the upper end of the bag. It will be understood that modifications can be made in my invention without departing from its scope or spirit. For example, in FIGURE 12, I have shown another embodiment of that stage of the machine which forms the handles and applies them to the paper web 11a. The basic handle forming unit described earlier is the same, but all of the stapling mechanism has been omitted. I have added the chain 150 which is driven by the sprockets 151 and 152 in timed relation to the speed of the Web. This chain is provided with a plurality of pairs of clamping members 153 which grip the cord 35b after it has been formed into the U-shaped handles and convey them into juxtaposition with the web 11a. in the proper position. At 154 is a roll of paper from which a strip is drawn by the draw rolls 15S and 156. The cutter 1'57 will be actuated at the same time the leading edge of the strip 154a has been placed between the drive rolls 158 and 159, so that the severed lengths will overlie the cord handles and the area of the web to which adhesive has been applied by the glue wheel 27. In this manner, the handles will be adheslvely secured in place. In such a modification the free ends of the handles 35]) are preferably somewhat longer than in the embodiment described heretofore, and the strip of paper 154a should be or" such a size that it will cover the handle ends. Correspondingly, the glue wheel 27 should also be made wider.

What I desire to secure and protect by Letters Patent is:

1. In a machine including means mounting a roll of bag forming paper and means for continuously withdrawing a web of paper from said roll and continuously advancing it in a path of travel past a plurality of machine stations, the improvement which comprises (a) a first machine station including scoring means positioned to continuously score said advancing web along a line of fold spaced inwardly from a longitudinal edge of said paper web, said scoring means acting to divide said web into a relatively narrow cuif forming part extending lengthwise along a marginal side edge of the web with the remainder of the web defining the body portions of the bags :being formed; (b) a second machine station including a roller about which the web travels, a first rotary cutter driven in timed relation to the movement of the web and having a pair of spaced apart blades, said first cutter coac-ting with said roller to form a continuous series of spaced apart pairs of slits in the cuff part of the web, said pairs of slits each extending inwardly from the free side edge of said cuff part to said line of fold, and a second rotary cutter driven in timed relation to the movement of the web and having a pair of spaced apart blades, said second cutter also coacting with said roller to form a continuous series of additional pairs of slits in the web, said additional pairs of slits lying along said line of fold with an end of each slit in communication with the innermost end of one of the slits in said first named pairs; (c) a third machine station including means for providing preformed U-s'haped cord handles, and means for advancing said preformed handles in timed relation to the movement of said web; and (d) a fourth machine station including means for receiving said advancing cord handles and juxtaposing said handles to said web with said handles projecting outwardly beyond said cuff part and with the opposite legs of each said handle overlying a pair of said first named slits at their points of intersection with said line of fold, and means for securing said handles to said web including means for infolding said cuff part along said line of fold and securing the infolded cuff part to the underlying areas of the remainder of the web, said means for infolding said cuff part along said line of fold, comprising a kicker having fingers arranged to contact and fold upwardly the portions of said cuff lying between the slits in each pair ofsaid first named slits, said kicker also having a trailing edge part positioned to contact and fold upwardly the portions of said cuff part lying immediately to the rear of each of said pairs of slits.

2. The machine claimed in claim 1 wherein the means for securing said cuff part in the infolded condition cornprises an adhesive applicator positioned to interpose adhesive between the infolded cuff part and the underlying areas of said Web, and wherein hold-down means are provided to apply sealing pressure to the infolded cuff part.

3. The machine claimed in claim 2 wherein said holddown means comprises at least one pair of opposing pressure rollers rotating in timed relation to the movement of said web, the uppermost of said pressure rollers having a pair of spaced apart resilient inserts oriented so as to contact the legs of the cord handles upon passage thereof between said pair of rollers.

4. The machine claimed in claim 3 including means at said fourth machine station for advancing and depositing strips of pap-er on said web and the legs of said handles in advance of the inf-olding of said cuff part, including means for interposing adhesive between said strips and the portions of the web contacted thereby.

S. The device claimed in claim 3 wherein said preformed cord handles are fastened to backing strips to form handle structures, and wherein the means at the fourth machine station for juxtaposing the handles to the web is oriented so as to deposit the handle structures on the web with the outermost side edges of said backing strips coinciding with said line of fold.

6. In a machine including means mounting a roll of bag forming paper and means for continuously withdrawing a web of paper from said roll and advancing it in a path of travel past a plurality of machine stations, the improvement which comprises (a) a first machine station including scoring means positioned to continuously score said advancing web along a line of fold spaced inwardly from a longitudinal edge of said paper web, said scoring means acting to divide said web into a relatively narrow cuff forming part extending lengthwise along a marginal side edge of said web, with the remainder of said web defining the body portions of the bags being formed; (b) a second machine station including a roller about which the web travels, a first rotary cutter driven in timed relation to the movement of said web and having a pair of spaced apart blades, said first cutter coacting with said roller to form a continuous series of spaced apart pairs of slits in the cuff part of said web, said pairs of slits extending inwardlyfrom the free side edge of said cuff part to said line of fold, and a second rotary cutter driven in timed relation to the movement of said web and having a pair of spaced apart blades, said second cutter also coacting with said roller to form a continuous series of additional pairs of slits in said Web lying along said line of fold with an end of each of said slits in communication with the innermost ends of the slits in said first named pairs; (c) a third machine station for providing preformed cord handles and advancing said handles in timed relation to the movement of said web, said third machine station including means for advancing a continuous length of backing strip material, handle forming means for forming and securing generally U-shaped cord handles to said backing strip material at spaced apart intervals, and means for severing said backing strip material intermediate the handles secured thereto to form individual backing strips each having a handle secured thereto; and (d) a fourth machine section including means for juxtaposing said backing strips and the attached handles to said Web with said handles projecting outwardly beyond said cuff part and with the opposite legs of each said handle overlying a pair of said first named slits at their points of intersection with said line of fold, including means for interposing adhesive between said infolded cuff part and the underlying areas of said web, and means for applying pressure to said infolded cuff part to adhere it to said web.

'7. The machine claimed in claim 6 wherein the means at said third machine station for advancing said continuous length of backing strip material acts to advance said material intermittently, and wherein said fourth machine station includes a coacting pair of rolls driven in timed relation to the movement of the web and positioned to receive the intermittently advanced strip of backing material from said third machine station, the means for severing said backing strip material into individual backing strips acting in timed relation to the intermittent advancing movement of the backing strip material so as to sever said material as its leading edge is engaged between said pair of driven rolls.

References Cited by the Examiner UNITED STATES PATENTS FRANK E. BAILEY, Primary Examiner.

Claims (1)

1. IN A MACHINE INCLUDING MEANS MOUNTING A ROLL OF BAG FORMING PAPER AND MEANS FOR CONTINUOUSLY WITHDRAWING A WEB OF PAPER FROM SAID ROLL AND CONTINUOUSLY ADVANCING IT IN A PATH OF TRAVEL PAST A PLURALITY OF MACHINE STATIONS, THE IMPROVEMENT WHICH COMPRISES (A) A FIRST MACHINE STATION INCLUDING SCORING MEANS POSITIONED TO CONTINUOUSLY SCORE SAID ADVANCING WEN ALONG A LINE OF FOLD SPACED INWARDLY FROM A LONGITUDINAL EDGE OF SAID UPPER WEB, SAID SCORING MEANS ACTING TO DIVIDE SAID WEB INTO A RELATIVELY NARROW CUFF FORMING PART EXTENDING LENGTHWISE ALONG A MARGINAL SIDE EDGE OF THE WEB WITH THE REMAINDER OF THE WEB DEFINING THE BODY PORTIONS OF THE BAGS BEING FORMED; (B) A SECOND MACHINE STATION INCLUDING A ROLLER ABOUT WHICH THE WEB TRAVELS, A FIRST ROTARY CUTTER DRIVEN IN TIMED RELATION TO THE MOVEMENT OF THE WEB AND HAVING A PAIR OF SPACED APART BLADES, SAID FIRST CUTTER COACTING WITH SAID ROLLER TO FORM A CONTINUOUS SERIES OF SPACED APART PAIRS OF SLITS IN THE CUFF PART OF THE WEB, SAID PAIRS OF SLITS EACH EXTENDING INWARDLY FROM THE FREE SIDE EDGE OF SAID CUFF PART TO SAID LINE OF FOLD, AND A SECONDARY ROTARY CUTTER DRIVEN IN TIMED RELATION TO THE MOVEMENT OF THE WEB AND HAVING A PAIR OF SPACED APART BLADES, SAID SECOND CUTTER ALSO COACTING WITH SAID ROLLER TO FORM A CONTINUOUS SERIES OF ADDITIONAL PAIRS OF SLITS IN THE WEB, SAID ADDITIONAL PAIRS OF SLITS LYING ALONG SAID LINE OF FOLD WITH AN END OF EACH SLIT

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