US2180338A - Method and apparatus for forming paper packages - Google Patents

Description

Nov. 21, 1939. v w. s. CLOUD 2.180338 METHOD AND APPARATUS FOR FORMING PAPER PACKAGES Filed June 2, 1937 5 Sheets-Sheet l I VENTOR BY 2 g Arrows/E?? Nov. 21, 1939. w s CLOUD 4 2,180,338

METHOD AND APPARATUS FOR FORMING PAPER PACKAGES Filed June 2, 1937 ,5 SheetsSheet 2 B'Y INVENgOR. z ,z/%.M-M

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NOV. 21, 1939. w s CLOUD 2.180338 METHOD AND APPARATUS FOR FORMING PAPER PACKAGES Filed June 2, 1937 5 Sheets-Sheet 3 W IN ZN TOR. fi/Zfink ATTORNEY? Nov. 21, 1939. w 5 CLQUD 2,180,338

METHOD AND APPARATUS FOR FORMING PAPER PACKAGES Filed June 2, 1937 5 Sheets-Sheet 4 H E 5i- Ill! I IN L N/gm IN V EN TOR.

Eu @fWwg Nov. 21, 1939. w. s. CLOUD METHOD AND APPARATUS FOR FORMING PAPER PACKAGES Filed Jun 2, 1937 5 sheds-sheep 5 m m E #0 M Patented Nov. 21, 1939 PATENT OFFICE METHOD AND APPARATUS FOR FORMING PAPER PACKAGES William s. Cloud, wumeue, Ill.

Application June 2, 1937, Serial No. 145,956

- 11 Claims.

This invention relates to methods and appara tus for forming paper packages.

It is an object of the invention to assemble and adhesively secure together two strips of paper which, when so secured, form a paper tube. It is a further object of the invention to so assemble the strips of paper that indicia printed on said assembled strips can be made to register. It is a further object of the invention to sever said assembled strips into individual package lengths along lines between successive sets of printed indicia. It is a. further object of the invention to provide for the simultaneous feeding and assembling in registered relation of a plurality of sets of strips, one of said sets being in the form of a web, so that rows of connected individual packages may be formed and severed together.

Other objects and advantages of the invention will appear hereinafter.

A preferred embodiment of the invention selected for purposes of illustration is shown in the accompanying drawings, in which,

Figure 1 is a fragmentary top plan view of a machine embodying the present invention.-

Figure 2 is a front elevation of the machine shown in Figure 1.

Figure 3 is a rear'elevation of the machine shown in Figure 1.

Figure 4 is an enlarged plan view of the guide bar.

Figure 5 is an end view of the guide bar.

Figure 6 is an enlarged section through the cutter.

Figure '7 is an enlarged elevation of the glue roll.

Figure 8 is a perspective view illustrating the packages.

Figure 9 is a send-diagrammatic view illustrating the method of assembling the strips, and

Figure 10 is a section through the packages.

In the preferred practice of the invention two strips of paper are fed continuously from separate sources, are assembled as hereinafter described, and are caused to adhere in such manher as to form a tube. The tubes are then severed in individual package lengths.

If desired, a plurality of packages may be formed simultaneously, in which case a plurality of strips of paper, preferably in web form, are fed from one source, and a plurality ofstrips of paper, preferably separate, are fed from another source, and pairs of strips from the two sources .are assembled, and caused to adhere as before.

One of the strips of each pair forming a tube is preferably in folded or pleated form to permit expansibility in the finished package.

In many commercial packages it is desirable to provide various types of marks, such as printed matter, on both the top and bottom of the 5 package so as to display the name of the product, advertising, instructions and the like. In many cases it is desirable that the said marks or printing be arranged to occupy a definite position with relation to the package as a whole, as 10 in groups or panels approximating the length of the package, so that when placed on display the packages will present a uniform appearance. When assembling a plurality of strips in which it is desirable that the marks or printing on the upper strip or strips register with the marks or printing on the lower strip or strips, a problem arises from the fact that no matter how carefully the marks or printing is done, it is impossible to secure uniformity because of stretch or shrinkage of the paper. Even if feeding and assembling are started with the marks or printing of the two strips in absolute registration, they will be out of register within a few feet.

According to the present invention, I apply adapted for forming a plurality of packages simultaneously.

Referring to the drawings, the apparatus comprises a frame I, on one end of which is carried a roll 2 of paper. The said paper is in web form, and as shown in the drawings, is fifteen packages wide, the web 3 being perforated longitudinally for subsequent severing. The web is led around idler roll 4, then over glue roll 5, then around driven roll 6, then across work table 1, then between driven roll 8 and idler rolls 9. At

the same time, separate strips II are fed from M reels l2 over an idler guide roll l3, through guide bar M from which they emerge to contact with the glued surface of the web 3 on the roll 6. No pressure'is applied at this point, however, and

since the glue is moist adhesion does not take place at once.

After the strips are thus brought into contact, they pass across the work table which is preferably of glass with a strong light beneath. This enables the operator to see whether the printing Additional description of 30 on the upper strips is in register with the printing on the lower strips and if not to take the necessary steps to correct. This is done in the following manner.

Referring to Figures 4 and 5, it will be seen that the guide bar l4 comprises vertical guide plates l5 which accurately guide'the strips II.

Located between each pair of guide plates and securedto the plate I6 is a resilient brake finger I! which presses against the strip I i. The pressure of any individual finger can be adjusted by thumb screws. l8 threaded in the plate l6. When the operator observes the printing on one of the upper strips to be advancing ahead of the printing on the lower strip, the corresponding thumb screw is turned down to increase the pressure applied to the strip so as to retard it. If the operator desires, however, temporary retarding pressure may be applied by pressing his'fingers against the advancing strip. On the other hand, if the operator observes the printing on the upper strip to be lagging behind that on the lower strip, the pressure on the upper strip is first relaxed, and if that is not sufiicient, the operator pushes 'the upper strip along with his fingers. The latter condition is illustrated in Figure 9 in which the upper strip S has been illustrated as lagging behind. When forming a plurality of packages simultaneously as shown herein, it is necessary to keep the printing of all of the upper strips aligned across the machine by selectively advancing or retarding individual strips. In the situation illustrated in Figure 9, this would be done by advancing the strip S.

Both retarding and advancement of the upper strip with respect to the lower are possible, first because they are done on the work table before the adhesive is set and before the adhesive is pressed by rollers 9, and second because the rollers 9 are individual idler rollers and are loosely mounted on their shaft.

After passing the rollers 8 and 9 the assembled strips are severed by a rotary cutter 2| having a pair of blades 22 cooperating with the fixed blade 23 secured to the frame of the machine; It is necessary, of course, to sever the packages along lines between successive sets of marks or printing, and here again a problem presents itself because of the variable length of the paper. In order to overcome this difiiculty the rate of the paper feed is varied'with respect to the rate of severing in order that more or less paper may be fed before severing takes place.

Referring particularly to Figures 2 and 3, a motor 25 is mounted on the casing of a variable speed mechanism 26. The motor drives shaft 21 at a constant rate through belt 28, but the speed of driven shaft 29 may be varied by rotating control shaft 30. Variable speed mechanisms of this type are a standard piece of equipment and the interior mechanism will not be further de- I scribed herein. The control-shaft 30 may be connected by a sprocket and chain connection to an operating handle 3|.

The strip feed mechanism is driven from the variable speed shaft 29, said shaft having a sprocket 33 thereon which drives sprocket 34 through chain 35. Sprocket 34 is mounted on counter-shaft 36 which also. carries sprocket 31.

p p paperincludes printed" paper and also paper which engage the paper to apply glue in relatively narrow spaced lines as shown at 55 in Figure 8. If desired the glue in the glue pot may be drawn off from time to time through pipe 55 and may be strained and replaced, or a continuous glue circulating system with suitable provision for straining may be employed if desired.

A preferred form of package is shown in Figures 8 and 10 in which the upper strips are folded or pleated as shown while the lower strips are flat and in the form of a web with lines of perforations between adjacent strips. The glue lines are arranged to cause the lower folds of the upper strips to adhere to the lower strips leaving the rest of the strips free to expand.

I have referred above to marked or "prlntedf I It will be understood that marked" which bears designs, diagrams, pictures, perforations and other such characteristics of identification. It will be further understood that the invention may be variouslymodified and embodied within the scope of the subjoined claims.

I claim as my invention:

1. The method of forming paper packages, which comprises continuously feeding two strips of correlatedly marked paper in superimposed relationship, applying adhesive to said strips, and controlling the rate of feed of one of said strips with relation to the other at a point in advance of that where adhesion takes place, to bring the marks on the two strips in register, to cause said strips to adhere in predetermined relationship.

2. The method of forming paper packages, which comprises'contin'uously feeding two strips of correlatedly marked paper in superimposed relationship, applying adhesive to said strips, advancing or retarding one of said strips with relation to the other at a point in advance of that where adhesion takes place, to bring the marks on thetwo strips in register, to cause said strips to adhere in predetermined relationship.

3. The method of forming paper packages,

' which comprises continuously feeding two strips 'of correlatedly marked paper in superimposed relationship, applying adhesive to save strips, controlling the rate of feed of one of said strips with relation to the other at a point in advance of that where adhesion takes place, to bring the'marks on the two strips in register, to cause said strips to adhere in predetermined relationship, and cutting off said strips after adhesion takes place in individual package lengths.

4. The method of forming a paper package from two strips of paper each having indicia printed thereon in panels each approximating a package length, which comprises feeding said strips of paper in superimposed relationship, applying adhesive to said strips, and controlling the rate of feed of one of said strips with relation to the other at a point in advance of that where adhesion takes place to cause said strips to ad- Z-ere with the printed panels of one strip in register with the printed panels of the other strip.

5. The method of forming a paper package from two strips of paper each having indicia printed thereon in panels each approximating a -package length, which comprises feeding said strips of paper in superimposed relationship, applying adhesive to said strips, controlling the rate of feed of one of said strips with relation to the other at a point in advance of that where adhesion takes place to cause said strips to adhere with the printed panels of one strip in register with the printed panels of the other strip, and cutting off said strips in package lengths between said printed panels.

6. The method of forming paper packages from strips of correlatedly marked paper, which comprises feeding a plurality of strips in the form of a web of paper having the width of a plurality of packages, simultaneously feeding a plurality of separate strips of paper each having the width of a single package, said separate strips being spaced across said web in superimposed relation thereto, applying adhesive to said strips, and controlling individually the rate of feed of said separate strips with relation to the rate of feed of said web at a point in advance of that where adhesion takes place,- to bring the marks on said strips in register with the marks on said web, to cause said strips to adhere in predetermined relationship.

'7. The method of forming paper packages from strips of correlatedly marked paper, which comprises feeding a plurality of strips in the form of a web of paper having the width of a plurality of packages, simultaneously feeding a plurality of separate strips of paper each having the width of a single package, said separate strips being spaced across said web in superimposed relation thereto, applying adhesive to said strips, controlling individually the rate of feed of said separate strips with relation to the rate of feed of said web at a point in advance of that where adhesion takes place, to bring the marks on said strips in register with the marks on said web.

' to cause said strips to adhere in predetermined relationship, and cutting across said assembled strips to sever a row of packages.

8. The method of forming paper packages from strips of correlatedly marked paper which comprises feeding a plurality of strips in the form of a web of paper having the width of a plurality of packages, simultaneously feeding a plurality of separate strips of paper each having the width of a single package, said separate strips being spaced across said web in superimposed relation thereto, applying adhesive to said web, and controlling individually the rate of feed of said separate strips with relation to the rate of feed of said web to cause said strips and said web to be adhesively secured together with the markings of the web in register with the markings of the separate strips.

9. The method of forming paper packages from strips of paper each having indicia printed thereon in panels each approximating a pack-.- age length, which comprises feeding a plurality of strips in theform of a web of paper having the width of a plurality of packages, simultaneously feeding a plurality of separate strips of paper each having the width of a single package, said separate strips being spaced across said web in superimposed relation thereto, applying adhesive to said web, controlling individually the rate of feed of said separate strips with relation to the rate of feed of said web to cause said strips and said web to be adhesively secured together with the printed panels of the web in register with the printed panels of the separate strips, and cutting across said joined strips and web between successive printed panels to sever a row of packages.

10. A machine for forming paper packages comprising, in combination, means for feeding a plurality of strips of correlatedly marked paper in superimposed registered relation, including a driven roll and an idler roll between which said strips pass, and means for controlling the rate of feed of the strip which is in contact with said idler roll.

11. A machine for forming paper packages comprising, in combination, means for feeding a plurality of strips of paper in superimposed relation, including a driven roll and an idler roll between which said strips pass, means for controlling the rate of feed of the strip which is in contact with said idler roll, means for severing said strips, and means for varying the rate of feed of the assembled strips with relation to the rate of severing to vary the length of the severed strips.

WILLIAM B. CLOUD.

CERTIFICATE OF CORRECTION.

Patent No. 2,180,558. November 21, 1959.-

WILLIAM S. CLOUD It is hereby certified that error appears in the printed specification ofthe above numbered patent requiring correction as follows: Page 2, second column, line 57, claim 5, for the word save" read said; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

' Signed and sealed this 26th day of December, A. D. 1959.

Henry Van Arsdale,

(Seal) Acting Commissioner of Patents.

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