US2844075A - Machine for forming and applying cord handles to a paper bag web - Google Patents

Machine for forming and applying cord handles to a paper bag web Download PDF

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US2844075A
US2844075A US473949A US47394954A US2844075A US 2844075 A US2844075 A US 2844075A US 473949 A US473949 A US 473949A US 47394954 A US47394954 A US 47394954A US 2844075 A US2844075 A US 2844075A
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Prior art keywords
cord
handle
web
shelf
machine
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US473949A
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John S Davis
Bochow Walter
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Equitable Paper Bag Co Inc
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Equitable Paper Bag Co Inc
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • B31B70/74Auxiliary operations
    • B31B70/86Forming integral handles or mounting separate handles
    • B31B70/864Mounting separate handles on bags, sheets or webs
    • B31B70/866Applying handles on a moving web followed by longitudinal folding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00Shape of flexible containers
    • B31B2160/10Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents

Description

July. 22, 1958 J. 5. DAVIS ET AL 2,844,075
MACHINE FOR FORMING AND APPLYING CORD HANDLES TO A PAPER BAG WEB Filed Dec. 8, 1954 '7 Sheets-Sheet 1 wwzwrops: John xsf Dal/11 v Wa/fer Bachow u y 22, 1958 J. 5. DAVIS ET AL 2,844,075
MACHINE FOR FORMING AND APPLYING CORD HANDLES TO A PAPER BAG WEB Filed Dec. 8, 1954 7 Sheets-Sheet 2 IIIIIIIIRII mmui III I g I Q III O John 5. Davis u Wa/Tvr Sac/20w a a w July 22, 1958 J. 5. DAVIS ET AL 2,844,075
MACHINE FOR FORMING AND APPLYING CORD HANDLES TO A PAPER BAG WEB Filed Dec. 8, 1954 7 Sheets-Sheet 5 INVENTORS: John 5. Dav/s Wa/f'er Bochow J. 5. DAVIS ET AL' 2,844,075 MACHINE FOR FORMING AND APPLYING CORD HA TO A P NDLES APER BAG WEB 7 Sheets-Sheet 4 July 22, 1958 Filed Dec. 8, 1954 INVENTORS: John S. Davis Wa/fer Bochow July 22, 1958 J. s. DAVIS ET AL 2,844,075
MACHINE FOR FORMING AND APPLYING CORD HANDLES TO A PAPER BAG WEB Filed Dec. 8, 1954 7 Sheets-Sheet 5 H91 ,m'll n' h IN vs/v 70/?5 John 5. Davis Wa/fer Bochow b 2342 Mu/y Afffys July 22, 1958 J 5 DAVIS ET AL MAcHINEjFoR' FORMING AND APPLYING CORD HANDLES TO APAPER BAG WEB Filed Dec. 8, 1954 7 Sheets-Sheet 6 Fig. 9.
IN VE N TORS John S. Davis Wa/fer Bochow July 22, 1958 J. s. DAVIS ETAL 2,844,075
MACHINE FOR FORMING AND APPLYING CORD HANDLES TO A PAPER BAG WEB 7 Sheets-Sheet 7 Filed Dec. 8, 1954 United States Patent MACHINE FOR FORMING AND APPLYING CORD HANDLES TO A PAPER BAG WEB John S. Davis, Scarborough, and Walter Bochow, Brooklyn, N. Y., assignors to Equitable Paper Bag Co., Inc., Long Island City, N. Y., a corporation of New York Application December 8, 1954, Serial No. 473,949 19 Claims. (Cl. 93-8) This invention relates to a machine for forming and applying cord handles to a paper bag web. The machine may be combined with a paper bag machine so that the combination produces finished bags having cord handles projecting from their tops. The so-called shopping bag is an example of the type of bag which may be produced.
One of the objects is to provide a practical machine capable of operating reliably at the high working speed required to keep up with a modern paper bag machine. Another object is to provide a paper bag machine with an assembly for forming and applying cord handles to the web so that the finished bags have these cord handles projecting from their tops. Other objects may be inferred from the following disclosure.
The accompanying drawings illustrate a specific example of a machine embodying the invention and applied to a paper bag machine. In these drawings obstructing parts are removed when necessary to expose the details of construction and in some instances schematic representations are used. This is done for the purpose of providing a disclosure which is more easily understood than it would be in the absence of these expedients.
The various figures are as follows:
Fig. 1 is a top view;
Fig. 2 is a top view on to Fig. 1, and exposing an enlarged scale, as compared details not shown by this first Fig. 3 is a vertical-section taken on the line 3-3 in Fig.2;
Fig. 4 is a vertical section taken on the line 4-4 in Fig. 2;
Fig. 5 is a top view of the assembly shown by Fig. 4;
Fig. 6 is a side view taken on the line 6-6 in Fig. 5;
Fig. 7 is a perspective view of a detail shown by Fig. 6 in elevation;
Fig. 8 is a top view of an assembly shown by Fig. 2 but which is now exposed more fully for the purpose of illustrating an early phase in the handle forming operation;
Fig. 9 is generally similar to Fig. 8 and serves to show a later phase in the handle forming operation;
Fig. 10 is a schematic elevation View showing the manner in which this cord handle forming and applying machine may be combined with a paper bag machine;
Fig. 11 is a perspective view showing the bag web as it is tubed by the bag making machine and the bag lengths severed, this view combining the various steps for illustrative purposes although in a bag machine the steps would occur sequentially; and
Fig. 12 shows in perspective the elements of a gear train which may be used to drive the cord handle forming and applying machine by connection with a driven element of the paper bag machine.
A paper shopping bag, of course, requires two handles and, therefore, Fig. 1 indicates that two of the handle forming and applying machines are used with'each bag Web of a bag machine. Since the two handle machines are duplicates of each other only one is illustrated in detail.
"ice
Each handle forming-and applying machine includes a platform 1 horizontally supported in a laterally shiftable manner on rods Z'which may be fixed transversely between the side frames of practically any bag machine. This platform may be adjusted transversely by a rack gear 3 engaged by a worm gear 4 keyed to a shaft 5 journaled by bearings '6, the arrangement being secured to the side frames of the bag machine and the platform. A suitably arranged pinion may be substituted for this worm gear if desired. A hand-crank 7 is keyed to the end of the shaft 5. Rotation of the crank 7 laterally shifts or adjusts the platform 1 as required to locate the handle machine so that the cord handles will be properly applied to the bag web. A suitable locking arrangement is provided for holding the platform immovable when it is adjusted properly. Such lateral adjusting or shifting is required to properly locate the handles on bag webs of different widths. One of the handle machines may be anchored permanently to the bag machine if desired, the other handle machine then being adjusted as required.
Three upright supports, 8, 9 and 10, respectively are secured in a row to the top side of the platform 1, reference now and for sometime hereafter being made to only one of the handle machines. These supports are interspaced and are arranged in a transversely extending row. These supports have semi-circular top portions and a drum 11 rotates between each of them with its surface concentric with respect to the tops of these supports. The spaces between the supports expose the surface of this drum 11 and its surface is flush with the semicircular support surfaces. The radius of the support top portions and of the drum is sufficiently large so that the circumference of the drum 11 is greater than the length of the legs of the cord handle formed by the machine. As illustrated, the drums circumference is some three times as great as the length of the handle legs or, in other words, about equal to the average or normal length of bag made by the bag machine.
This drum 11, comprising its two sections, is keyed to a shaft 12 which is journaled and supported by hearings in the supports 8, 9 and 10.
Rotary power is supplied to the handle machine by a main gear 14 which is suitably journaled in connection with and above the top of the platform 1, the latter hav-' ing a slot 15 down through which a portion of the gear 14 projects so as to mesh with a very wide faced or axially *long pinion or toothed shaft 16 which is keyed to a shaft 17 journaled transversely between the frames of the bag machine. This long pinion 16 should be long enough to permit it to remain meshed with the gear 14 during lateral or transverse shifting of the platform 1 within the range of positions necessary to accommodate webs of different widths. The shaft 17 may be driven by one of the bag machine driving elements and is shown.
as being provided with a gear 18 for this purpose. This gear 18 may be a sprocket wheel in the case of machines using chain drives.
Transversely spaced frames 19 are generally indicated as extending upwardly from the top side of the platform 1, these frames serving to journal the various parts such as the gear 14. However, any convenient arrangement may be used for associating the parts being described.
The drum shaft 12 has a pinion 20 meshed with the gear 14 and so the drum 11 revolves continuously, during the operation of the machine, with its upper part moving forwardly with respect to the bag machine. The drum is timed to turn one revolution for each passing bag length. The drum shaft 12 itself serves to drive right angle gearing 21, located on the opposite end of the shaft 12 from the end where the pinion 20 is located. A shaft 22, driven by the gearing 21, extends backwardly, the shaft being journaled in a supporting standard 23, to a gear 24 meshed with a pinion which is keyed to a shaft 26, journaled by standards 27, and which shaft 26 extends forwardly toward the shaft 12. This arrangement provides a drive for a set of cord feed rolls 28, the pass line of this set of feed rolls being aligned transversely with the semi-circular peripheries of the semi-circular tops of the standards 8, 9 and 10, these tops all having the same radius and being in mutual axial alignment themselves. The cord C, for the handles, is led from a suitable source, such as a spool of the cord, through a tubular guide 29 to the nip or pass line of the feed rolls 28, the latter feeding the cord transversely across the peripheries of the semi-circular support tops.
These semi-circular surfaces, which may be referred to directly as 8, 9 and 10, are each formed to provide a shelf segment, 8a, 9a and 16a. Each shelf extends radially with respect to the axis of the surfaces 8, 9 and 10 which are, in turn, concentric with the drum 11 and, of course, the axis of the latters shaft 12. These shelves are horizontally aligned with respect to each other and they are located slightly above the horizontal plane of the axis of the shaft 12 and in alignment with the pass line of the pinch rolls 28.
The standard 13 has a cord die a extending transversely through it in axial alignment with the pass line of the feed rolls and in alignment with the various shelves described. Therefore, rotation of the feed rolls, by the gearing described, drives the cord forwardly through the die 30a and onto the three shelves 8a, 9a and 10a. This cord length, thus driven onto the shelves, must be severed, and this is done by a knife 31 mounted on an arm 32 which is keyed to the shaft 12 so as to be rotated by the latter. The timing of the gearing 21, 24 and 25 effected by the gearing ratios, is such that a length of the cord is driven onto the shelves until the end of the cord arrives at a location somewhat beyond the end of the shelf 10a, the knife 31 then severing this cord length.
As shown by Fig. 7 the knife 31 has a cutting edge 33 and immediately behind this edge it has a retreating or receding portion 34. Thus the knife is made adequately strong while providing clearance or relief for the cord end just severed so that this new end may start to advance promptly without butting against any part of the knife 31.
During the moment that the knife 31 is severing the cord C it is desirable to slow down the necessarily high travelling speed of the cord. This is done by providing the gear 24 with a blank or toothless segment 24a which mates with the gear 25 as the knife 31 approaches the cord C. Dun'ng the actual cutting, by the knife, the
feed rolls 28 are turned at a reduced speed by a gear segment 24b, keyed to the shaft 22, which during that interval meshes with a gear segment 25b which is keyed to the shaft 26 which turns the feed rolls. The radius of the segment 24b is considerably shorter than that of the gear 24, while the radius of the gear segment 25!; is correspondingly greater than the radius of the pinion 25. Immediately after the cutting the teeth of the gear 24 and pinion 25 remesh so that the feed rolls are again driven at the high rate of speed fixed by the large diameter of the gear 24 and the small diameter of the pinion 25. g
It can now be seen how for each revolution the drum 11 a severed length of the cord C is pushed onto the shelves, 8a, 2a and Illa so as to lie close to the drum 11. The width of the support 9 is slightly less than the extent of the cord handles cross bar, and the width of the support 8 is about the same as the length of the handles legs. The support 10 is relatively narrow because there is room for the cord length to overhang this support 10 during the brief interval when the cord length rests on the shelves.
The drum 11 has radially projecting handle formers 11a having arcuate lengths about equal to the handle leg length. These formers are not so wide as the spaces between the supports 8 and 9 and 9 and 10 and the formers are located so as to travel, respectively, adjacent to the support 8 and the support 10, there being one former provided for each of the two spaces between the two supports. These formers project far enough to engage and bend the cord length, on the shelves, to the handle shape, which is substantially rectangular in nature. This action requires restraint of the cross bar portion of the cord handle length. In addition, it is desirable to provide an arrangement for preventing the cord length from buckling on the shelves as it is driven onto them by the action of the feed rolls.
With the above in mind, an arcuate cover 35 is mounted on one arm of a bell-crank 36 which is pivoted on a bearing 37, the other arm of the bell-crank being provided with a cam follower 38 which rides on the surface of a rotary cam 39. The cover 35 is arcuate in a concentric manner with respect to the axis of the bearing 37, and the cover swings in a generally radial manner with respect to the semi-circular surfaces of the supports 8, 9 and 10. The cam 39 swings this cover 35 forwardly and against the support 8 so as to cover the latters shelf 8a and define a space just suificient to pass the cord freely while restraining it from buckling. The shelf 9a is provided with a generally similar arrangement, comprising a cover 40 mounted by a bell-chank 41 supported by the bearing 42, the free end of the bell-crank 41 having the cam follower 43 bearing against the rotary cam 44. The shelf 10a does not require a corresponding cover in the practical operation of the machine, although such a cover may be provided if desired.
As soon as the cord length is driven completely on the various shelves under the two covers described above, a presser bar 45 which is similar in appearance and motion to the covers but function differently, moves forwardly under the cover 40 and presses or pinches the cross bar portion of the cord handle length against the support 9 so as to anchor this central section of the cord length. This is timed to occur during the cutting action of the knife 31 and, therefore, anchors the cord during the cutting action and holds the cut cord length in position. The cover 40 has a width substantially equalling the handles cross bar length and the formers 11a clear the ends of this cover by distances just slightly greater than the diameter of the cord. Thus the cover 40 also serves, along with the presser bar 45, to restrain the cord as the formers sweep the cord handle leg portions upwardly and forwardly.
The cam 39 is contoured to cause the cover 35 to move backwardly a moment before the formers 11a engage the cord so as to pick the latter up from the shelves 3:: and 10a by bending the outer portions of the cord length upwardly.
The presser bar 45 is arranged somewhat like the covers 35 and 40. It differs only in that it is mounted by a simple lever 46 which pivots on a bearing 47 and has an end extending beyond the cover and equipped with a follower 48 which bears on a rotary cam 49.
All of the bearings 37, 42 and 47 are journaled for free pivotal action on a common shaft 50, and all of the earns 39, 44 and 49 are locked on a common rotative shaft 51 having a pinion 52 which meshes with the main driving gear 14 of the machine. The contours of the various cams are designed so that at the beginning of a cycle the covers 35 and 40 are over the shelves 8a and 9:; until the cord handle length is driven completely on these shelves, the cover 35 then retreating promptly so as to uncover the cord. As soon as the knife and the formers 11a have performed their function the cover 40 and the presser bar 45 are retracted. The presser bar 45 was, of course, advanced as soon as the cord length was fully positioned on the shelves. As soon as the cord length is carried away, as presently described, the covers 35 and 40 may return promptly to position. The cover 35 must be located over the shelf 8a as the next cord length starts to feed on this shelf and the cover 40 should preferably get over its shelf 9a in time to guide the cord. It can be seen that there is some leeway in the timing of the parts but the timing must be such as to cause these parts to perform their proper functions.
A stationary or fixed roof 53 covers all of the semicircular support surfaces 8, 9 and at a distance above them defining a space just suflicient to permit free movement of the cord as its legs are formed. This roof has.
suitable openings through which the described parts may move and centrally above the support 9 it has an opening 54. Handle leg spacing rollers 55 are mounted on a frame 56 so as to depend through this opening 54 and bear on the drum 11. These rollers 55 have oppositely facing surfaces 55a against which the cord handle legs are moved by the formers 11a, thus fixing the handle leg spacing accurately. This frame 56 is pivotally mounted by brackets 57 and is biased, so as to press the rollers 55 downwardly, by a compression spring 58. This arrangement is so that the rollers 55 may ride upwardly over the cord handles cross bar as the cord handle moves forwardly for application to the paper bag web.
Radially extending abutments 11b project from the drum 11 at an arcuate distance behind the formers 11a substantially equal to the handle leg lengths. These abutments 11b engage the cross bar of the fully formed handle and push the handle forwardly so as to advance it rapidly at the peripheral speed of the drum 11. Strippers 59 are fixed immovably so as to bear almost on the drum 11 beyond the rollers 55 and peel ofl? the formed handle legs so that the handle may move horizontally forwardly. The formers 11a extend for a considerable distance rearwardly from their forward ends and, therefore, they continue to hold the handle legs inwardly during the time the handle is in contact with the drum. The abutments 11b, like the formers 11a, are spaced outwardly far enough to clear the rollers 55, these rollers lifting easily so as to ride over the cross bar of the handle as the latter is pushed forwardly by the abutments 11b over the top of the stripper 59. The handle cross bar travels over the arcuate surface 9 as the handle is pushed by the abutments 11b.
Referring now to Fig. 10, of what may be a conventional high speed paper bag machine are shown in a schematic manner. The bag machine itself, of course, has side frames and trains of gears or sprocket wheels and sprocket chains for driving the various rotary elements.
The paper web W is fed from a large roll 60 of the material, through a set of rolls 61 which are provided with means for forming transverse rows of perforations through the paper web at bag length intervals. After the web is tubed the tube is tensioned by equipment at the front end of the machine, unillustrated, so as to separate the bag lengths, the bottom former completing the bags. A set of rotary elements 62 are also shown, these being for the purpose of making the cut-outs required by the bottom former. The locations of these stations may be reversed if desired. This cut-out may be made so that the bottom former may grip only one of the bag walls without requiring a projecting tongue which would cause an unsightly cut in the bag top.
The web continues over guiding rollers 63 which direct the web up-hill and rearwardly to where the handle forming machine is located. In Fig. 10 only enough of the handle forming machine is shown to locate its position. Prior to reaching this machine the web travels across a rotary element 64 which applies the line of wet adhesive required to close the bag seam formed by the tubing equipment of the bag machine, this equipment being unillustrated. Also, the web travels across a rotary element 65 which applies a rectangular solid pattern of wet adhesive in the same manner as is done when reinforcing patches are to be applied to a paper bag. These stations may be reversed in order if desiredthe elements at the rear end Also as in the case when applying a reinforcing patch, the handle machine has a roll of narrow width paper 66 supported at a level above the machine. As in the case of applying patches, this feeds a patch web P which is directed by feed and guide rollers 67 down-hill and forwardly to meet the paper web W at an angle thereto. The latter web W is turned horizontally by one of the guide rollers 63a so that the spots of wet adhesive, for the patches, are uppermost, and the patch web P feeds through a set of die cutting rolls 68 which sever patch lengths from the web P. The elements 67 are driven so as to feed the patch web P at a slow enough rate with respect to the web W so that the rolls 68 cut off patch lengths just as the leading edges of the web P reach the forward edges of the spots of adhesive on the web W. The patches are then engaged by a roller 63b driven at the speed of the roller 63a, and so the patches promptly attain the travelling speed of the Web W.
The leading ends of the cord handles, marked CH, are also fed onto the leading edges of the spots of adhesive because the guide roller 63a is directly beyond the stripper 59 from which the cord handles emerge with their leg ends leading. The gear 18, for the handle forming machine, is geared into the driving system of the paper bag machine so that the travelling speeds of the cord handles are substantially the same as that of the paper bag web W. With this arrangement the paper patch is applied over the legs of the handles, the spots of wet adhesive and the main portions of the handle legs. The patches, in each instance, are applied to the trailing end of each bag length established by the line of perforaations previously formed. The balance of the cord handles, including their cross bars, in each instance, project backwardly over the line of perforation so as to overlap on the leading edge of the trailing bag length.
The patch-applying mechanism is provided with an adhesive-applying roller 69 having a printing surface which prints lines of adhesive 011 the underside of the patch web P at locations causing these lines to register with the handle legs so that the latter are adhesively secured not only to the bag web but to the patches as well. The balance of the patch, in each instance, secures itself to the bag webthrough the medium of the patch of adhesive applied by the element 65. The adhesiveapplying element 69 is arranged to print interrupted lines with the interruptions occurring at the lines of severance of the patches so that the cutting element 68 can cut against clean paper free from adhesive.
As previously indicated, two handles are applied to each bag length, the two handles forming and applying machines being duplicates of each other. Obviously .the parts 66 through 69, and the parts described below are provided in duplicate also, there being one assembly of parts for each of the handle forming and applying machines. The parts must be laterally shiftable so as to be registrable with the handle forming machine when the latter is arranged for lateral shifting as described.
In Fig. 11 the web W is shown with the cord handle CH applied along with the patch reinforcement PR and with the bag web shown partly tubed. The line of perforations, made by the rotary element 61, will become a serrated edge because the unillustrated part of the bag machine will tension the two adjacent bag lengths so as to pull them apart. The cord handles which overlap the trailing bag length will project so that in the finished bag they may be used in the usual manner. It is to be noted that the handles CH have relatively sharp rectangular corners between their legs and cross bars, this having resulted from the action of the cover 40 and pinch bar 45 working in conjunction with the other elements of the handle machine. It is also to be noted that the patch PR is, in each instance, very flatly adhered to the bag web with its portions having the lines-of adhesive, applied by the rotary elements 69, molded tightly argues! the handle les the latte being tig tly gripped between the two paper surfaces and adhesively secured to both of these paper parts. 7
With the above in mind, the paper web, carrying the handles and patches, leaves the guide roller 63a horizontally and passes through two sets of rolls 70. Each set has a plain surface lower roll, while the upper roll is provided with grooves 71 which fit over the cord handle legs and mold the patch firmly down about these legs to produce the effect shown by Fig. 11. To avoid rolling over the cross bars of the handles the upper ones of the rolls 70 are engaged at suitably timed intervals by cams 72 on the lower roll of each set. This lifts the upper grooved rolls in a manner timed to cause the upper rolls to lift above the cross bars of the handles as they travel past the two roller sets. The first of the upper rolls goes up and down shortly in advance of the second roll.
Next, the web travels over a series of rolls 73 above which, on top of the web W, are arranged travelling belts 74, looped around suitable rollers 75, and which belts are located so as to press against the tops of the patches just outside of the cord handle legs so .as to cause the outer portions of the patches to firmly adhere flatly to the bag web. In addition, two or more soft elastically deformable rolls 76 of relatively large diameters are provided. These have widths causing them to press on the patches and since these large, softly deformable, rolls are located directly above certain of the rolls 73, a good pressing action is secured. The belts 74 extend for a considerable distance beyond the rolls 76 because there is a greater tendency for the edges of the patches to leave the web prior to setting of the wet adhesive which i of course, progressively occurring. At the end of the belts 74 a third soft, elastically deformable, roll 77 is arranged oppositely to another of the lower rolls 73. This roll 77 is like the roll 76 and performs a similar function.
At this point it is apparent that the bag web can go on through the balance of the bag machine, unillustrated. It is to be assumed that this machine is of the type that separates the bag lengths by tensioning the bag at its lines of perforation. This pulls the bag lengths apart leaving the projecting cord handles ready for use. The cutouts, indicated at 78 in Fig. 11, are made by the rotary elements 62 so that the usual bottom former may perform its function properly.
Practically all of the rotary elements that have been described are driven elements. All are rotated so as to provide peripheral speeds substantially equal to the linear travelling speed of the bag web, excepting for the elements 67 through 69, which, of course, operate at the slower speed required to feed the patch lengths to the web at bag length intervals.
As schematically shown in Fig. 10, one of the power driven shafts 75 of the paper bag machine, is connected by a suitable rotary power transmission means 80 with the bag web perforator member 61 and, through other such means 81, with the two rolls 63a and 63b, which bring the web and cord handle and patch together, and with the rollers '70. The means 80 similarly drives the paste-applying units 64 and 65. Thus all of the units which should travel at the paper bag webs speed are synchronized.
A suitable rotary power transmission 82 is also taken from the shaft 79 for driving the gear 18 as previously indicated and the rotary elements 67 through 69 are driven from the gear 14 by suitable means 83. Therefore, the handle and patch-applying mechanisms are also synchronized.
It is to be understood that the drive schematically shown by the broken lines 80 through 83 may be either intermeshed gears, chain drives or the like.
When the machine is producing a single bag length proper proportioning of the parts, such as the diameter of the drum 1i and its associated parts, can make it unnecessary to provide for any variation between a predetermined lower speed for the handle and patch-apply- (3' ing unit with respect to the paper bag web speed. It is to be understood that the-paper patch mechanism must operate at a slow speed so as to feed one patch per bag length to the web, the rollers 63a and 63b serving to accelerate each patch to the web speed. In the case of the heavier cord handles such rapid acceleration is impractical and, therefore, the handles should be fed to the web so that their respective travelling speeds are substantially the same. This may be done by making the circumference of the drum 11 equal to one bag length in case the bag machine produces only one length of bag. In such an instance the peripheral speed of the drum 11 may be made to coincide with the travelling speed of the bag web.
-However, it is usually desirable to make various bag lengths on a bag machine and, therefore, in Fig. 10, a variable speed drive is indicated, a suitable arrangement being shown in detail by, Fig. 12. This consists of a gear train which connects the previously mentioned bag machine shaft 79 with the shaft 17 of the handle machine. This connection is through the speed reducing gearing 103 and 104, and the gear 101 which connects with the gear 18 on the shaft 17. Thus the handle machine will be driven at a relatively slow speed as required to accommodate longer bag lengths. The bag web itself may continue at the same speed as when the normal or customary length of bags are being made, which would mean that the cord handles would be fed too slowly to the web. This is prevented by the ellipitical gearing consisting of the gear and either one or the other of the gears 102 and M6, a choice being provided so that other bag lengths may be accommodated. The elliptical gearing in use is timed so that the handle machine picks up speed as each handle is fed to the web whereby to make the handles travelling speed coincide substantially with that of the paper bag web. In the case of shorter bag lengths the reverse of this arrangement would, of course, be used.
Those skilled in the paper bag machine art are accustomed to making various drive connections as they are required. They should also be able to arrange the timing in view of the preceding description.
It is to be understood that the adhesive-applying elements must be provided with some arrangement for picking up adhesive and, in general, be made in accordance with accepted principles. Thus, the elemmt 65a has a paste pan 65b while the element 69:: is also shown with a paste pan 69b. An unnumbered paste pan is shown for the element 64, it being theiusual arrangement for applying the seam adhesive.
We claim: I
l. A cord handle forming machine including a shelf, means for locating the central portion of a cord length on said shelf so that the cords end portions project therefrom, formers and means for mounting said formers so that they move transversely adjacent to the ends of said shelf and engage and bend said end portions transversely thereto, a presser and means for moving said presser against said central portion so as to hold it on said shelf 'while said end portions are being bent by said formers.
2. A cord handle forming machine including a shelf, means for locating the central portion of a cord length on said shelf so that the. cords end portions project therefrom, formers and means for mounting said formers so that they move transversely adjacent to the ends of said shelfand engage and bend said end portions transversely thereto, a presser and means for moving said presser against said central portion so as to hold it on said shelf while said end portions are being bent by said formers, the first-named means comprising a feeder for longitudinally pushing the cord onto said shelf, and a cover for said shelf and means for mounting said cover so that it confines a space above said shelf through which the cord is pushed by said feeder.
3. A cord handle forming machine including a shelf, means for locating the central portion of a cord length on said shelf -so that the Lords end portions project therefrom, formers and means for mounting said formers so that they'move transversely adjacent to the ends of said shelf and engage and bend said end portions transversely thereto, a presser and means for moving said presser against said central portion so as to hold it on said shelf while said end portions are being bent by said formers, and a cover for said shelf and having a predetermined length substantially equalling the desired cord handle cross barlength, and means for mounting said cover so that it is positioned over said central portion transversely to the motion of said formers and holds said central portion substantially straight while said end portions are being bent by said formers.
4. A cord handle forming machine including a shelf, means for locating the central portion of a cord length on said shelf so that the cords end portions project therefrom, formers and means for mounting said formers so that they move transversely adjacent to the ends of said shelf and engage and bend said endportions tranversely thereto, a presser and means for moving said presser against'said central portion so as to hold it on said shelf while said end portions are being bent by said formers, and supports providing supporting surfaces spaced beyond the ends of said shelf and extending transversely therefrom in the direction said end portions are bent by said formers and so as to support said end portions as they are bent.
5. A cord handle forming machine including a shelf, means for locating the central portion of a cord length on said shelf so that the cords end portions project therefrom, formers and means for mounting said formers so that they move transversely adjacent to the ends of said shelf and engage and bend said end portions transversely thereto, a presser and means for moving said presser against said central portion so as to hold it on said shelf while said end portions are being bent by said formers, and supports providing supporting surfaces spaced beyond the ends of said shelf and extending transversely therefrom in the direction said end portions are bent by said formers and so as to support said end portions as they are bent, and a roof located over eachv of said surfaces and defining therewith a guiding space for said cord.
6. A cord handle forming machine including a shelf, means for locating the central portion of a cord length on said shelf so that the cords end portions project therefrom, formers and means for mounting said formers so that they move transversely adjacent to the ends of said shelf and engage and bend said end portions transversely thereto, a presser and means for moving said presser against said central portion so as to hold it on said shelf while said end portions are being bent by said formers, and a support providing a supporting surface extending transversely from said shelf in the direction said end portions are bent by said formers, means for releasing said presser from said cord after said formers have bent said end portions, abutments and means for mounting said abutments so that they move transversely adjacent to the ends of said shelf and engage said central portion after said end portions are bent and so as to move the formed handle away from said shelf with said end portions projecting forwardly.
7. A cord handle forming machine includinga shelf, means for locating the central portion of a cord length on said shelf so that the cords end portions project therefrom, formers and means for mounting said formers so that they move transversely adjacent to the ends of said shelf and engage and bend said end portions transversely thereto, a presser and means for moving said presser against said central portion so as to hold it on said shelf while said end portions are being bent by said formers, and a support providing a supporting surface extending transversely from said shelf in the direction said end portions are bent by said formers, means for releasing said presser from sad cord after said formers have bent said end-portions, abutments and means for mounting said abutments so that they move transversely adjacent to the ends of said shelf and engage said central portion after said end portions are bent and so as to move the formed handle away from said shelf with said end portions projecting forwardly, and a roof located over said surface and defining therewith a guiding space for said central portion.
8. A cord handle forming machine including a shelf, means for locating the central portion of a cord length on said shelf so that the cords end portions project therefrom, formers and means for mounting said formers so that they move transversely adjacent to the ends of said shelf and engage and bend said end portions transversely thereto, a presser and means for moving said presser against said central portion so as to hold it on said shelf while said end portions are being bent by said formers, and a support providing a supporting surface extending transversely from said shelf in the direction said end portions are bent by said formers, means for releasing said presser from said cord after said formers have bent said end portions, abutments and means for mounting said abutments so that they move transversely adjacent to the ends of said shelf and engage said central portion after said end portions are bentand so as to move the formed handle away from said shelf with said end portions projecting forwardly, and rollers and means for positioning said rollers so that they engage and restrain said end portions as the latter are bent to a predetermined degree by said formers and so that said rollers may lift and roll over said central portion as it is moved forwardly by said abutments.
9. A cord handle forming machine including a shelf, means for locating the central portion of a cord length on said shelf so that the cords end portions project therefrom, formers and means for mounting said formers so that they move transversely adjacent to the ends of said shelf and engage and bend said end portions transversely thereto, a presser and means for moving said presser against said central portion so as to hold it on said shelf while said end portions are being bent by said formers, and supports providing supporting surfaces spaced beyond the ends of said shelf and extending transversely therefrom in the direction said end portions are bent by said formers and so as to support said end portions as they are bent, and a support providing a supporting surface extending transversely from said shelf in the direction said end portions are bent by said formers, means for releasing said presser from said cord after said formers have bent said end portions, abutments and means for mounting said abutments so that they move transversely adjacent to the ends of said shelf and engage said central portion after said end portions are bent and so as to move the formed handle away from said shelf with said end portions projecting forwardly, and a roof located over each of said surfaces and defining therewith a guiding space for said cord.
10. A cord handle forming machine including a shelf, means for locating the central vportion of a cord length on said shelf so that the cords end portions project therefrom, formers and means for mounting said formers so that'they move transversely adjacent to the ends of said shelf and engage and bend said end portions trans versely thereto, a presser and means for moving said presser against said central portion so as to hold it on said shelf while said end portions are being bent by said formers, and supports providing supporting surfaces spaced beyond the ends of said shelf and extending trans versely therefrom in the direction said end portions are bent by said formers and so as to support said end portions as they are bent,'and a support providing a supporting surface extending transversely from said shelf 5 in the direction said end portions are bent by said 1 l l formers, means for releasing said presser from said cord after said formers have bent said end portions, abutments and means for mounting said abutments so that they move transversely adjacent to the ends of said shelf and engage said central portion after said end portions are bent and so as to move the formed handle away from said shelf with said end portions projecting forwardly, and a roof located over each of said surfaces and defining therewith a guiding space for said cord, the firstnamed means comprising a feeder for longitudinally pushing the cord onto said shelf, and a cover for said shelf and'means for mounting said cover so that it confines a space above said shelf throughwhich the cord is pushed by said feeder, and a cover for said shelf and having a predetermined length substantially equalling the desired cord handle cross bar length, and means for mounting said cover so that it is positioned over said central portion transversely to the motion of said formers and holds said central portion substantially straight while said end portions are being bent by said formers.
11. A paper bag web cord handle applying machine includin means for guiding a travelling paper bag web along a predetermined path traversing a cord handle applying station, means in advance of said station for applying interspaced spots of adhesive to said web, means at said station for feeding cord handles successively to said web with the legs of these handles in registration with said spots, and means for feeding paper patches to said web on top of said handle legs and in registration with said spots, said cord handle feeding means including means for successively feeding handle cord lengths, means for holding the central portion of each of said lengths immovable, means for bending the end portions of each of said lengths to form them into said legs and substantially completely form one of said handles while said central portion is held immovable by said pressing and holding means, said holding means freeing each of said handles for movement after each is formed, means for propelling each of said formed and freed handles with its legs pointing forwardly in the handle propelling direction, and means for guiding said legs of each oftsaid propelled handles to point said legs in said webs travelling direction and effect said registration.
12. A paper bag Web cord handle applying machine including means for guiding a travelling paper bagweb along a predetermined path traversing a cord handle applying station, means in advance of said station for applying interspaced spots of adhesive to said web, means at said station for feeding cord handles successively to said Web with the legs of these handles in registration with said spots, and means for feeding paper patches to said web on top of said handle legs and in registration with said spots, and means for applying strips of adhesive to said patches prior to their being so fed and so that these strips register with the handle legs, said cord handle feeding means including means for successively feeding handle cord lengths, means for holding the central portion of each of said lengths immovable, means for bending the end portions of each of said lengths to form them into said legs and substantially completely form one of said handles while said central portion is held immovable by said pressing and holding means, said holding means freeing each of said handles for movement after each is formed, means for propelling each of said formed and freed handles with its legs pointing forwardly in the handle propelling direction, and means for guiding said legs of each of said propelled handles to point said legs in said Webs travelling direction and effect said registration.
13. A paper bag web cord handle applying machine including means for guiding a travelling paper bag web along a predetermined path traversing a cord handle applying station, means in advance of said station for applying interspaced spots of adhesive to said web, means at said station for feeding cord handles successively to said web with the legs of these handles in registration with said spots, and means for feeding paper patches to said Web on top of said handle legs and in registration with said spots, and rollers having grooved peripheries and means for positioning said rollers so that they roll down said patches around said legs at a location following said station, said rollers being located to engage said patches, and smooth rollers having means positioning them to support said web opposite to said grooved rollers and engaging the side of said Web opposite to said patches, said cord handle feeding means including means for successively feeding handle cord lengths, means for holding the central portion of each of said lengths immovable, means for bending the end portions of each of said lengths to form them into said legs and substantially completely form one of said handles While said central portion is held immovable by saidpressing and holding means, said holding means freeing each of said handles for movement after each is formed, means for propelling each of said formed and freed handles with its legs pointing forwardly in the handle propelling direction, and means for guiding said legs of each of said propelled handles to point said legs'in said Webs travelling direction and effect said registration.
14. A paper bag web cord handle applying machine including means for guiding a travelling paper bag web along a predetermined path traversing a cord handle applying station, means in advance of said station for applying interspaced spots of adhesive to said web, means at said station for feeding cord handles successively to said web with the legs of these handles in registration with said spots, and means for feeding paper patches to said web on top of said handle legs and in registration with said spots, rollers having grooved peripheries and means for positioning said rollers so that they roll down said patches around said legs at a location following said station, said rollers being located to engage said patches, smooth rollers having means positioning them to support said web opposite to said grooved rollers and engaging the side of said Web opposite to said patches and softly deformable rollers positioned to roll down said patches on said web and positioned to engagetsaid web and patches following said grooved and smooth rollers, said cord handle feeding means including means for successively feeding handle cord lengths, means for holding the central portion of each of said lengths immovable, means for bending the end portions of each of said lengths to form them into said legs and substantially completely form one of said handles while said central portion is held immovable by said pressing and holding means, said holding means freeing eachtof said handles for movement after each is formed, means for-propelling each of said formed and freed handles with its legs pointing forwardly in the handle propelling direction, and means for guiding said legs of each of said propelled handles to point said legs in said webs travelling direction and effect said registration.
15. A paper bag Web cord handle applying machine including means for guiding a travelling paper bag web along a predetermined path traversing a cord handle applying station, means in advance of said station for applying interspaced spots of adhesive to said ,web, means at said station for feeding cord handles successively to said Web with the legs of these handles in registration with said spots, and means for feeding paper patches to said Web on top of said handle legs and in registration with said spots, rollers having grooved peripheries and means for positioning said rollers so that they roll down said patches around said legs at a location following said station, said rollers being located to engage said patches, smooth rollers having means positioning them to support said web opposite to said grooved rollers and engaged the side of said web opposite to said patches, softly deformable rollers positioned-to roll down said patches on said web and positioned to engage said Web and patches following said grooved and smooth rollers, and travelling belts and means for guiding said belts so that they press down said patches outside of the handle legs and onto said web following said deformable rollers, said cord handle feeding means including means for successively feeding handle cord lengths, means for holding the central portion of each of said lengths immovable, means for bending the end portions of each of said lengths to form them into said legs and substantially completely form one of said handles while said central portion is held immovable by said pressing and holding means, said holding means freeing each of said handles for movement after each is formed, means for propelling each of said formed and freed handles with its legs pointing forwardly in the handle propelling direction, and means for guiding said legs of each of said propelled handles to point said legs in said webs travelling direction and effect said registration.
16. A cord handle forming machine including three semi-circular upwardly facing supporting surfaces having horizontal shelves projecting backwardly therefrom, said surfaces and shelves being longitudinally aligned in interspaced relation, feed rollers arranged to feed c-ord longitudinally over said shelves so as to form a cord length having a central portion on the central one of the shelves and end portions on the end ones of the shelves, a cord cutter located between said feed rollers and the end shelf adjacent thereto to sever said length, a presser mounted to hold said central portion on said central shelf, a drum mounted to rotate forwardly concentrically beneath said surfaces and having handle leg formers projecting radially through the spaces between said surfaces .and circumferentially and inwardly offset therefrom having handle cross bar abutments also projecting radially through said spaces, cord leg abutment rollers located between said surfaces and rolling on said drum and spaced forwardly from said shelves, and means for operating said presser to hold the cord while said leg formers are in engagement with the cord.
17. A cord handle forming machine including three semi-circular upwardly facing supporting surfaces having horizontal shelves projecting backwardly therefrom, said surfaces and shelves being longitudinally aligned in interspaced relation, feed rollers arranged to feed cord longitudinally over said shelves so as to form a cord length having a central portion on the central one of the shelves and end portions on the end ones of the shelves, a cord cutter located between said feed rollers and the end shelf adjacent thereto to sever said length, a presser mounted to hold said central portion on said central shelf, a drum mounted to rotate forwardly concentrically beneath said surfaces and having handle leg formers projecting radially through the spaces between said surfaces and circumferentially and inwardly offset therefrom having handle cross bar abutments also projecting radially through said spaces, cord leg abutment rollers located between said surfaces and rolling on said drum and spaced forwardly from said shelves, and means for operating said presser to hold the cord while said leg formers are in engagement with the cord, a cover mounted to move over and from said central shelf above the cord and having an extent embracing the lateral spacing of said abutments but less than the lateral spacing of said leg formers, and means for moving said cover over said 14 central shelf while the cord is feeding thereover and while said leg formers are in engagement with the cord.
18. A cord handle forming machine including three semi-circular upwardly facing supporting surfaces having horizontal shelves projecting backwardly therefrom, said surfaces and shelves being longitudinally aligned in interspaced relation, feed rollers arranged to feed cord longitudinally over said shelves so as to form a cord length having a central portion on the central one of the shelves and end portions on the end ones of the shelves, a cord cutter located between said feed rollers and the end shelf adjacent thereto to sever said length, a presser mounted to hold said central portion on said central shelf, a drum mounted to rotate forwardly concentrically beneath said surfaces and having handle leg formers projecting radially through the spaces between said surfaces and circumferentially and inwardly offset therefrom having handle cross bar abutments also projecting radially through said spaces, cord leg abutment rollers located between said surfaces and rolling on said drum and spaced forwardly from said shelves, and means for operating said presser to hold the cord while said leg formers are in engagement with the cord and when the cord length is first completely fed over said shelves, andmeans for operating said cord cutter promptly when said length is so fed.
19. A cord handle forming machine including three semi-circular upwardly facing supporting surfaces having horizontal shelves projecting backwardly therefrom, said surfaces and shelves being longitudinally aligned in interspaced relation, feed rollers arranged to feed cord longitudinally over said shelves so as to form a cord length having a central portion on the central one of the shelves and end portions on the end ones of the shelves, a cord cutter located between said feed rollers and the end shelf adjacent thereto to sever said length, a presser mounted to hold said central portion on said central shelf, a drum mounted to rotate forwardly concentrically beneath said surfaces and having handle leg formers projecting radially through the spaces between said surfaces and circumferentially and inwardly offset therefrom having handle cross bar abutments also projecting radially through said spaces, cord leg abutment rollers located between said surfaces and rolling on said drum and spaced forwardly from said shelves, and means for operating said presser to hold the cord while said leg formers are in engagement with the cord and when the cord length is first completely fed over said shelves, and means for operating said cord cutter promptly when said length is so fed, a cover mounted to move over and from said central shelf above the cord and having an extent embracing the lateral spacing of said abutments but less than the lateral spacing of said leg formers, and means for moving said cover over said central shelf while the cord is feeding thereover and while said leg formers are in engagement with the cord.
References Cited in the file of this patent UNITED STATES PATENTS 1,908,291 Goss May 9, 1933 2,060,450 Steen Nov. 10, 1936 2,083,618 Salfisberg June 15, 1937 2,340,260 Clunan Jan. 25, 1944 2,438,089 Carson Mar. 16, 1948
US473949A 1954-12-08 1954-12-08 Machine for forming and applying cord handles to a paper bag web Expired - Lifetime US2844075A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986975A (en) * 1958-04-28 1961-06-06 W Inc Apparatus for making bags
US3101033A (en) * 1960-03-07 1963-08-20 Interstate Bag Company Inc Apparatus for making carrier bags
DE1161755B (en) * 1959-12-31 1964-01-23 Holweg Const Mec Machine for the production of paper bags or the like with reinforced handles
US3147673A (en) * 1962-04-16 1964-09-08 Package Containers Inc Apparatus for attaching handles to paper bags
US3202064A (en) * 1962-07-30 1965-08-24 Duro Paper Bag Mfg Company Machine for applying cord handles to paper bags
US3334550A (en) * 1964-07-23 1967-08-08 Crown Zellerbach Corp Apparatus for and method of making handles and applying same to a bag
US3607563A (en) * 1966-04-26 1971-09-21 John Bagnall Bag handle forming machine
US5350350A (en) * 1991-12-06 1994-09-27 Curioni Sun S.R.L. Apparatus for forming and applying handles to bags
US5421805A (en) * 1993-10-01 1995-06-06 Bancroft Bag, Inc. Method and apparatus for producing handled bags
US20040176231A1 (en) * 2003-03-04 2004-09-09 Pajunen Kenneth J. Rope handle forming machine and method

Citations (5)

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Publication number Priority date Publication date Assignee Title
US1908291A (en) * 1931-01-22 1933-05-09 Int Paper Box Machine Co Machine for assembling strip sections and box-blanks
US2060450A (en) * 1935-11-05 1936-11-10 Harford K Steen Machine for making handled shopping bags
US2083618A (en) * 1935-10-15 1937-06-15 Ivers Lee Co Packaging apparatus
US2340260A (en) * 1940-07-12 1944-01-25 Wingfoot Corp Packaging eggs and the like
US2438089A (en) * 1946-08-27 1948-03-16 Wingfoot Corp Packaging

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1908291A (en) * 1931-01-22 1933-05-09 Int Paper Box Machine Co Machine for assembling strip sections and box-blanks
US2083618A (en) * 1935-10-15 1937-06-15 Ivers Lee Co Packaging apparatus
US2060450A (en) * 1935-11-05 1936-11-10 Harford K Steen Machine for making handled shopping bags
US2340260A (en) * 1940-07-12 1944-01-25 Wingfoot Corp Packaging eggs and the like
US2438089A (en) * 1946-08-27 1948-03-16 Wingfoot Corp Packaging

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986975A (en) * 1958-04-28 1961-06-06 W Inc Apparatus for making bags
DE1161755B (en) * 1959-12-31 1964-01-23 Holweg Const Mec Machine for the production of paper bags or the like with reinforced handles
US3101033A (en) * 1960-03-07 1963-08-20 Interstate Bag Company Inc Apparatus for making carrier bags
US3147673A (en) * 1962-04-16 1964-09-08 Package Containers Inc Apparatus for attaching handles to paper bags
US3202064A (en) * 1962-07-30 1965-08-24 Duro Paper Bag Mfg Company Machine for applying cord handles to paper bags
US3334550A (en) * 1964-07-23 1967-08-08 Crown Zellerbach Corp Apparatus for and method of making handles and applying same to a bag
US3607563A (en) * 1966-04-26 1971-09-21 John Bagnall Bag handle forming machine
US5350350A (en) * 1991-12-06 1994-09-27 Curioni Sun S.R.L. Apparatus for forming and applying handles to bags
US5421805A (en) * 1993-10-01 1995-06-06 Bancroft Bag, Inc. Method and apparatus for producing handled bags
US20040176231A1 (en) * 2003-03-04 2004-09-09 Pajunen Kenneth J. Rope handle forming machine and method
US6905451B2 (en) 2003-03-04 2005-06-14 Kenneth J. Pajunen Rope handle forming machine and method

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