US2385646A - Method of making album bags - Google Patents

Description

Sept. 25, 1945. G, w. PoPPE METHOD OF MAKING ALBUM BAGS Filed Apri; 2s, i942 5 P R Y OP rE To N mp v, T mw au /M e Y N 6 lllllllll l Hllll.. lllllllrf sept 25, 1945. G. w. PoPPE METHOD OF MAKING ALBUM BAGS sheets-sheet'z w N \N 2 A. 9 l 8, 2 n Q m. A N d e l .l F

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INVENTOR 650,965 M @nog -ATTORNEY SePt- 25, 1945 G. w. PoPPE METHOD OF MAKING ALBUM BAGS Filed April 2a, 1942 lll l EM... MW.

lNvENToR 650/665 MK ,Doppf ATTORNEY Sept. 25', 1945. G. w. PoPPE 2,385,646

METHOD 0F MAKING ALBUM BAGS l Filed April 248, 1942 6 Sheets-Sheet 4 INVENT'oR GEORGE Ml PoP/D5 ATTORNEY G. W. POPPE METHOD 0F MAKING ALBUM BAGS 6 Sheets-Sheet 5 Filed April 28, 1942 INVENTOR fo/@Gf M/ ,D0/Opf;

ATTORNEY Sept. 25, 1945.

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Sept 25, 1945- G. w. PoPPE METHOD OF MAKING ALBUM BAGS 6 Sheets-Sheerl 6 Filed April 28 1942 Patented Sept. 2.5, 1945 UNITED STATES PATENT OFFICE METHOD 0F MAKING ALBUM BAGS George W. Poppe, Brooklyn, N. Y., assigner to Equitable Paper Bag Co.` Inc.,l Long Island City, N. Y., a corporation of New York Application April 28, 1942, Serial No. 440,812

. 4 Claims.

The present invention relates to a method for making album bags,l that is bags having a binding edge which may be perforated thereby enabling the bags conveniently to be bound together in album form.

The binding edge of the bag may include several plies to give the necessary or desired stiftness to the binding edge and to compensate for the thickness of the bag when filled. The bag produced is adapted to be used for storing phonograph records or similar articles. The binding may be formed by turning over one or both edges of a web from which the bag is made or not turning over at the edges at all. A reenforcing strip may also be inserted between edges of the web or between the folded over edges of the web.

An object of the invention is to provide a method by which album bags may be produced on a. bag machine.

The several features of the invention include the manner of folding and cutting a continuously advancing web, whereby a bag is produced having a closed bottom and a marginal binding edge extending beyond the bottom closure; the manner of inserting the reenforcing strip at the binding edge during the continuous advance of the web; the construction of the former of a bag machine. that it may properly sever the folded web and the coordination of the former and lip knife for proper bag section severance.

Other features and advantages will become apparent from the following detailed description and claims when taken in connection with the accompanying drawings in which:

Fig. 1 is a longitudinal section through a bag machine showing so much of such machine as will enable the present invention to be understood;

Fig. 2 is a diagrammatic top plan view showing one way in which the web may be f olded and one edge turned over and pasted;

Fig. 3 is an enlarged section on the line 3-3 Fig. 2:

Fig. 4 is a view similar to Fig. 2, but showing another Way of vfolding the web;

Fig. 5 is a section on the line 5-5 Fig. 4;

Fig. 6 is a view similar to Fig. 2 in which the paste line at one edge of the web is fed underneath the former, the latter being grooved to prevent the paste from coming into contact with the former;

Fig. '7 is a section on the line '|-1 Fig. 6;

Fig. 8 is a section on the line 8-8 Fig. 6 and is substantially the same as Fig. 3;

Figs. 9 and 10 are enlarged details of two types of former heads;

Fig. 11 is a schematic view in elevation ofthe rear portion of a machine showing how both edges of the web may be prefolded before passing to the type of machine shown in Fig. 1;

Fig. 12 is a diagrammatic top plan view of Fig. 11 y Fig. 13 is a continuation of Fig. 12 and differs from Fig. 2 only in showing more in detail the manner in which a bag section is treated after severance;

Fig. 14 is a section on line H--M Fig. 13;

Fig. 15 is a perspective detail of the die for cutting off the top of a bag section;

Fig. 16 is a top plan view similar to Fig. 4 showing the manner of feeding a reenforcing strip along with the Web;

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Fig. 17 is an enlarged section on line I'l--II Fig. 16;

Fig. 18 is a longitudinal section of the rear AJortion of the machine shown in Fig. 16;

Fig.` 19 is an enlarged view of a typical bag section such as may result from any one of the several methods disclosed and before the bottom is closed; and,

Fig. 20 is a completed album bag.

The method of producing the album bag may be carried out in several ways, as will hereinafter appear. In its broader aspects however, the method includes the folding of a continuouslsr advancing web of paper, whichweb is provided with pairs of cuts spaced transversely, each pair being also spaced longitudinally at bag section intervals, the cuts being within the margins of the web and the line of Ofold being coincident with at least one end of one longitudinal series of cuts. The method further includes the severing of one wall of the folded over web by two transverse cuts, one of these cuts extending from one edge of the web to the inner end of one of said cuts and the other transverse cut connecting the outer ends of a pair of cuts. The other wall of the folded web is severed by a transverse cut extending from the edge of the web remote from the fold, to the fold thereof and in line with the inner ends of the same pair of cuts.

The cuts may be straight or diagonal and form the side edges of the bottom closure flap. For better appearance this bottom flap is preferably oftrapezoidal form and hence the cuts shown in the drawings are all diagonal but the method is not limited to diagonal cuts.

Since high speed of production is one of the objects accomplished, the method in its several aspects is shown as practiced on a bag machine having several new features which enable the method to be carried out successfully and at high speed.

Referring to the drawings, Fig. 1 shows a bag machine having'the usual framework 2 supporting the severalI shafts by which the machine is driven.

The ,web of paper 4, from which the bags are made passes from a roll and over guide rollers 6, 1 and 8 and about a roller i5. It then passes over rollers I2 and i3 and downwardly under a former I4 having an upstanding oblique portion I5. The former is supported as is customary -by a head l5 supported by arms i?, constituting part of the framework.

As the web passes over the roller i0, in the form of the invention asshown in Fig. 2, said web receives two lines of paste. One line of paste is supplied near one edge of the web by a disc I8 and the opposite edge is supplied with a line of paste from a disc 25, each of said paste discs dipping into a. paste pot 2|.

Situated above the roller I0 is a shaft 22 supporting two adjustable score rollers 24 for making longitudinal scores in the web wherever required along what will constitute the lines of fold.

Situated vertically above the roller I2 is a shaft 25 carrying adjustable dies 2S for making Athe longitudinal or oblique cuts in the web which cuts will eventually form the side edges of the bottom closure flap of the finished bag. The

cuts made by the dies 25 are shown at 21 Fig. 2

and each pair of cuts is spaced apart longitudinally at bag section intervals.

A third shaft 28 is located vertically above the roller I3 and carries an adjustable die 30 for making convex cuts indicated at 32, Fig. 2.

The album bag produced by the present method and machine is provided with a binding edge 45 .as shown in Fig. 20 and in the method illustrated in Fig. 2 provision is made for reenforcing this binding edge by turning over one edge of the web and pasting it to the body of the web.

The web as usual is drawn through the machine by the usual feed rollers and 3B and prior to reaching the feed rollers the web is folded over upon itself along the score line indicated at a-a, Fig. 2. The web therefore reaches the feed rollers in folded over condition. As is usual, the feed rollers engage the Walls of the folded over web between them and this is made possible by cutting out the former` at 38 Fig. 2, the feed rollers being located at the -cut out portions.

As the web progresses towards the feed rollers one edge of the web is turned up along the score line indicated by b-b Fig. 2 and this turning up is effected by a plow share 40 assisted by i a bent wire 42 suitably supported from a shaft 43 Fig. 1.

A second plow share 44 turns the edge over on itself. At the same time the web is also folded along the score line a-a Fig. 2 and the opposite edge of the web is folded on top of the edge 45, Fig. 2, after said edge has been turned over.

The edge 45 contains the paste line 46 and the opposite edge contains the paste line 41, both paste -lines being on top of the web prior to the folding over step. When the plow shares 40 and 44 tum over the edge 45 the paste line 46 is then located underneath the turned over edge 45 and is pasted to the body of the web, Fig. 3. As

` previously described, the other margin of the web is folded over on top of the folded over edge 45 and as the folded over web passes between the feed rollers, both webs are secured together to form a bag tube.

In cutting the tube into bag sections, the construction of the former becomes important. If the former were of the usual `bag tube width throughout, then when the edge Al5 were turned over by the plow share 44 onto such a former, the pasted edge 45 would be pasted to the former. Therefore the former i4 is of the usual bag tube width for a portion thereof extending forwardly from the heel 'but is provided with a shoulder 48 Fig. 2 and from the shoulder to the serrated end 5G the former is narrower than the tube width. The position of the plow share 44 is such that as the edge 45, is turned over the completion of the turning is not effected until the web has passed the shoulder 48 and therefore the edge 45 is pasted to the web and escapes the former.

As the tube passes the feed rollers 35 and 36 it is cut oil into bag sections by the serrated edge 5B of the former and by the serrated edge of the lip knife 52 through the operation of the striker bar 54 carried by a sprocket chain 55 operated in the usual manner.

Since the lip knife severs the upper wall of the tube clear .across and the lower wall to the inner ends of the cuts 21, and the former severs the lower wall along a line coincident with the outer ends of the cuts 21, a. bag section is produced which has a bottom closure and a marginal binding edge extending beyond the bottom closure flap at one side.

As the striker Ibar 54 severs the tube, the latter is pinched by the usual pinch bar mechanism which includes a lower roller 56 and a pinch bar 51 engaging the roller 56. The roller 56 is carried .by a shaft 58 and the machine may be driven 49 by this shaft, to which suitable power may be applied. All of the details of the driving connections are not shown as they all are of well known construction and are shown in several of my prior patents. Some of these connections however, are shown in Fig. 1, since they vary somewhat from the usual construction. 'I'hey include the usual sprocket chain B0 which may pass over a sprocket carried by the shaft 5B, and over a sprocket carried by the shaft 62, the latter shaft being geared to the shaft 63. The shafts 25 and 28 are driven by a sprocket chain 64 passing over a sprocket on the shaft 63 and over sprockets carried by the shafts 25 and 28. These several sprockets are merely indicated diagrammatically in Fig. 1 as their construction is Well known and they do not form part of the present invention, except that they form part of a well known machine by which the method herein described and claimed, may commercially be practiced.

With the construction just described, the shafts 25 and 28 rotate once for each' rotation of the shaft 58, and at each rotation of these shafts a bag section is cut off irrespective of its length. .As is usual in bag machines, different length bags are made by changing the ratio of drive between the shaft 58 and the feed rollers 35 and 35. These change connections are not shown because they are old and well known in bag machine construction. It is essential however, that the shaft 22 carrying the scoring` disc 24 be rotated at the same surface speed as the paper is being fed and therefore these discs must rotate at the same peripheral speed as the feed rollers. To accomplish this the upper feed roller 35 carries a sprocket over which passes a sprocket chain 23 Fig. 1 and around the sprocket carried by the shaft 22. A roller 29 supported by a bracket projecting from one of the frame members serves to take up any slack in the sprocket chain 23.

The handling of a bag tube section after it has been severed and passes beyond the pinch bar mechanism, will be described later, since such handling is the same whether the method is carried out in one way or another.

Referring to Fig. 4 the method there shown differs from that illustrated in Fig. 2 mainly by a difference in folding of the web. The cutting is the same as in Fig. 2. Only one paste line 48 is required because the edge 85 is folded first and then the edge 45 is folded on top of the folded over edge 85. It also differs from Fig. 2 in that the former is of different shape as will be later described more in detail,

In carrying out the method as illustrated in Fig. 4 the web 4 is fed as shown in Fig. 1, and may receive score lines as at aa and b-b, the cuts 21 and the cuts 32. Only one line of paste however is used in forming the tube. This line of paste 46 is applied near one edge, as in Fig. 2, and the plow shares 48 and 44 are also provided. The edge 45 however, is not folded upon itself, but is folded on top of the opposite edge of the web. Hence, the opposite edge of the web is carried under th'e turned up edge 45, before, or about the time the web reaches -the plow shares 44, as shown in Fig. 3.

Since the line of paste 48 comes into contact with the edge of the web 85, after said edge has been folded over, it is not necessary to' provide the former with the shoulder 48. The former therefore may be of bag tube width throughout almost its entire length. Almost, but not quite. The former head or serrated end 58, extends only the distance between the outer ends of the cuts 21, and is stepped backat 88 at one side only. From the step 88, to the cut out 38 the former is of bag tube width. The length of the step 88 is substantially equal to the width of the binding edge or margin 45 as sh'own in Fig. 20.

By outer ends of the cuts is meant the more advanced ends as the tube progresses in the direction of the arrows shown in Figs. 2 and 4. The trailing ends of the cuts 21 are referred to as the inner ends.

The stepped former used in the Fig. 4 construction may be of the type shown in either Figs. 9 or 10. In Fig. 9 the cutaway portion or step 88 is plain, while in Fig. 10 it is serrated.

It will be recalled that when the tube is cut off by the former and lip knife under action of the striker bar 54 Fig. 1, the lower wall of the tube is severed along a line connecting the outer ends of the cuts 21. With the type of former shown in Fig. 4 the lower wall is also severed by the former between the points 88a (Fig. 10) and the edge of the former 88h. This construction makes it possible for the lip knife to sever th'e upper wall only.

With the type of former shown in Fig. 9, however, the lip knife has to sever the upper wall and the lower wall between the edge 88a and 88h, Fig. 9. This is also true of the construction shown in Fig. 2.

In Fig. 6 the former is likethat shown in Fig. 2,

except that it is provided with a longitudinal groove 88 on its under side, as shown in Fig. 7. The other parts shown in Fig. 2 also appear in Fig. 6. `The line of paste 48, however, is applied farther from the Vedge of the web and within the fold line b-b. The paste line 48 therefore passes under the former and within the groove 88. By this construction the paste does not come into contact with the former. As the web passes beyond the shoulder 48, the edge 45 is folded down and pasted to theweb. The edge 85, which also has a line of paste 41, within its edge is folded on top of the turned over edge 45,

and the web, then in the form of a tube, passes between the feed rollers 35 and 38.

As previously stated the tube, after passing the feed rollers, is severed into bag tube sections by the former and lip knife. Each section contains a bottom iiap 49 (Fig. 19), and a marginal binding edge 45 extending beyond the iiap at one side. This edge is reenforced by the turned over edge 45 and in th'e forms already described contains three plies of paper.

In order to provide a binding edge containing four plies, a construction shown in Figs. 11, 12 and 13, may be used. The method pursued however is broadly the same as heretofore stated but the means by which the method may be vpracticed roll 5 and over guide rollers 81 and 88 to a roller 18 from which it passes' under a short former 12. The latter extends from 13 to 14 Figs. 11 and 12. As the web passes the roller 18 two lines of paste are applied by the paste discs 18 and 11, and two score lines are made by the score rollers 18. Plow shares 88 one on each side of the web, turn over each edge, the width of each turned over edge being that of the marginal binding edge. Two rollers 82 on shaft 83 serve to support the web. Above the rollers 82 are two gravity rollers 84 carried by shaft 85.which serve to press the pasted edges of the web to the body of the web. The web with its edges prefolded passes to the rollers 1 and 8, and over the roller I8, as in Fig. 1.

As the prefolded web passes over the roller I8, it receives a single line of paste from paste disc 28, Fig. 12, and is scored along a line which is to constitute the fold, by score roller 24. It also receives the cuts 21 and 32. It is then folded over onto the former I4 as shown in Fig. 13 and passes between the feed rollers 35 and 38 as in Fig. 1 construction.

It will be noted that the former i4 asshown in Fig. 13 is cut entirely away along one edge. The width of the cut-away portion is substantially equal to the width of the marginal binding edge. The right side of the former, Fig. 13, is cut out at 38 so that the rollers 85 and 38 at this cut out portion can engage the folded web between them. The rollers at the left extend beyOnd the former edge.

After the folded web passes the feed rollers lit is cut oil into bag sections by the serrated end 58 of the former and by the lip knife 52 as already described. A

The handling of the bag sections after they have been cut oil has been deferred to this point in the specication because it was more convenient to show the cutting oif of the top of a bag section in Fig. 13 than in any of the previous figures.

Such bag sections leave the pinch bar mechanism, including the roller 58 and the pinch bar 51, and pass between two rollers 88 and 89 Fis. l. The lower roller 89 is a hardened steel roller and the upper roller 88 carries a die 98 and a' die 32. The ldie 98 makes the circular hole 93 shown in Fig. 13 and the die 92 is shaped as shown in the perspective view Fig. 15. 'Ihe die 92 cuts one wall of the bag clear across while the other wall is cut to the edges of the cut 32.

The chip 96 shown in Figs. l and 13, may be disposed of in any desired manner. The bag section then passes between rollers 98 and |00, which, through the usual mechanism, fold over the bottom flap 59 and paste it in the usual manner thus completing the bag in the form shown in Fig. 20.

In the form shown in this figure the out out 32 is on the same wall of the bag as the folded over bottom nap 9.

It is obvious, however, that the web instead of being folded in the several figures, from right to left, as for instance in Figs. 2 and 4, could be folded from left to right. If so folded, the right side of the former would be shaped as shown in the several figures instead of the left side.

It is also obvious that the cuts 32 if made as shown in the several figures would pass under the former instead of on top of the former. I there- If the web is folded from right to left as shown in the several figures, then the cut 32 made by the die 30 will appear in the same wall upon which the bottom closing ilap 49 folds.

Instead of turning over one orv both edges of the web I may use a reenforcing strip |02, not l wider than the binding edge or margin, of the nished bag and in Figs. 16, 17 and 18, a method and machine for handling such a strip is disclosed.

The strip may also be used between the folded over side edges, if desired. It may itself be folded. In which case it would not be wider than the marginal edge.

The strip |02 is fed from a roll |03 and passes on top of the web 4 as said web passes over the roller I0, Fig. 18. A paste disc I8 applies paste to the web 4 as it passes over the roller I0 as in Fig. 2 or Fig. 3 and as the strip |02 if fed on top of the web 4 it is pasted to it along a paste line indicated at |04, Fig. 17.

The usual cuts32 and 21 are made in the web by the dies 2'6 and 30 and a score line is 'also made by a score disc 24, Fig. 16. The web is folded over onto the former along the score line indicated by-c--c Fig. 16 and as a folded web, it passes under the feed rollers andris cut off into bag sections in the manner already described.

It may be desirable that the two edges of the web in its folded over condition be not pasted together, and therefore, in Fig. 16 no paste is applied to the edge 65 of the web.

Since the paste line |04 is underneath the strip |02, the former I4 in the construction shown in Fig. 6, may be of the usual bag tube width.

The bag tube section shown in Fig. 19 has been purposely described in the detailed description of the figures as a typical bag section, because if a web is folded over without any paste lines whatever, there would be produced a bag tube section such as shown in Fig. 19 with a binding edge 45 but with no paste and only two plies in thickness.

If one edge of the web is turned over and pasted as inFig. 2, then a section such as shown in Fig. 19 would have a binding edge 45 of three thicknesses with two lines of paste therebetween as indicated in Fig. 3.v n

If the web is folded and pasted' as in Fig. 4 there would result a three-ply binding edge with only one line of paste between the edge and the folded over portion of the web as clearly indicated in Fig. 5.

Ii the web is pre-formed with two of its edges folded over as in Fig. l2, the binding edge would appear as in Fig. 14, and contain four plies.

If the narrow reenforcing strip 102 is used thenthe binding edge would appear as in Fig. 17, and contain three plies.

While the drawings show several forms which the invention may take, it is obvious, that still further variations may be used within the scope of the invention without departing from the spirit thereof.

What I claim is: l

1. The method of making album bags which includes making pairs of transversely spaced oblique slits in a continuously advancing web of paper and within the margins thereof, said pairs of slits being spaced apart longitudinally at bag section intervals, folding the web to form a tube, one edge of which is coincident with the divergent ends of one longitudinal set of slits and the other edge of which is spaced from the divergent ends of the remaining longitudinal set of slits, interjoining the web margins, severing one wall of said tube by two transverse cuts, one of which extends from said other tube edge to the divergent end of theA adjacent slit, and the other of which connects the convergent end of said slit with the convergent end of the other slit constituting a pair, and severing the other wall by a transverse cut in line with the divergent ends of said pair of slits.

2. The method of making album bags which includes making pairs of transversely spaced oblique slits in a continuously advancing web of paper and within the margins thereof, said pairs of slits being spaced apart longitudinally at bag section intervals, folding the web to form a tube, one edge of which is coincident with the divergent ends of one longitudinal set of slits and the other edge of which is spaced from the divergent ends of the remaining longitudinal set of slits, feeding a strip between the web margins and joining it thereto, severing one wall of said tube by two transverse cuts, one of which extends from said other tube edge to thedivergent edge of the adjacent slit and also effects severance of said strip and the other of which connects the convergent end of said slit with the convergent end of the other slit constituting a pair, and severing the other wall by a transverse cut in line with the divergent ends of said pair of slits.

3. The method of making album bags which includes making pairs of transversely spaced oblique slits in a continuously advancing web of paper and within the margins thereof, said pairs of slits being spaced apart longitudinally at bag section intervals, folding the web to arrange one margin of the web outside the divergent ends of one longitudinal series of slits, folding the web along a. line coincident with the divergent ends of the other longitudinal series of slits to locate the second margin of the web on said folded-over portion and pasting said second marginto said folded-over portion to form a flat tube, severing the convergent end of said slit with the convergent end of the other slit constituting a pair and severing the other wall by a transverse cut extending in line with the divergent ends of said pair of slits.

4. The method of making album bags which includes making pairs of transversely spaced oblique slits in a. continuously advancing web of paper and within the margins thereof, said pairs of slits being spaced apart longitudinally at bag section intervals, folding the web to arrange one margin of the web outside the divergent ends of one longitudinal series of slits and pasting the folded-over portion to the remainder, folding the web along a line coincident with the divergent ends of the other longitudinal series of slits to locate the second margin of the web on said folded-over portion and pasting said second margin to said folded-over portion to form a at tube, severing one wall of said tube by two transverse cuts, one of which extends from the outer edge of said folded-over portion to the divergent end of the adjacent slit and the other of which connects the convergent end of said slit with the convergent end of the other slit constituting a pair and severing the other wall by a transverse cut extending in line with the divergent ends of said pair of slits.

GEORGE W. POPPE.

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