US2331067A

US2331067A - Method of making rigid material of t-section from paper

Info

Publication number: US2331067A
Application number: US439230A
Authority: US
Inventors: Leonard A Young
Original assignee: Individual
Current assignee: Individual
Priority date: 1942-04-16
Filing date: 1942-04-16
Publication date: 1943-10-05
Anticipated expiration: 1960-10-05

Description

L. A. YOUNG 2,331,067

METHOD OF MAKING RIGID MATERIAL 0F T-SECTION FROM PAPER Oct. 5, 1943.

Filed April 16, 1942 2 Sheets-Sheet 1 I N V EN TOR.

Zeb/767W" i r BY 0 5M 026 mm oiemnnwm @ct. 5, 1943. 1... A. YO UNG METHOD OF MAKING RIGID MATERIAL OF T-SECTION FROM PAPER 2 Sheets-Sheet 2 Filed April 16, 1942 INVENTOR. Leo/74122 /7 Patented Get. 5, 1943 METHOD OF MAKING RIGID MATERIAL F T-SECTION FROM PAPER Leonard A. Young, Detroit, Mich.

Application April 16, 1942, Serial No. 439,230

18 Claims.

This invention relates to improvements in method of making rigid material of T-section from paper.

The main objects of this invention are: First, to provide a method of making or fabricating material of T-section from paper stock which is very rigid in proportion to the amount of material used and highly suitable for the yokes of garment hangers and the like.

Second, to provide a method which may be very economically practiced both in the matter of material and labor.

Objects relatingto details and economies of the invention will appear from the description to follow. The invention is defined and pointed out in the claims.

An apparatus by which the method is performed is illustrated in the accompanying drawings, in which:

Figs. 1 and 1A are diagrammatic illustrations of an apparatus which may be employed in the practice of the method of my invention, the same being especially adapted for the production of garment hanger yokes.

Fig. 2 is a transverse section of a multi-ply web of material resulting from the steps illustrated in Fig. 1A and prior to the forming steps.

Fig. 3 is an enlarged fragmentary transverse section through the scoring rollers which constitute the first forming instrumentality.

Figs. 4, 5 and 6 illustrate successive steps in the forming operation and the instrumentality by means of which they may be successfully performed.

Fig. 7 illustrates a succeeding step in which infolded portions are compactly folded and adhered together.

Fig. 8 illustrates a forming stepfollowin'g that of Fig. 7 and an adhesive applicator.

Fig. 9 illustrates a forlmng step following the application of the adhesive in which the infolded edge portions are inset or compressed edgewise against the center portion.

Fig. 10 illustrates a step and means for performing the same following that of Fig. 9 in which the inturned portions are compressed laterally against each other, the final step in forming the paper into T-section stock.

Fig. 11 illustrates the conformed stock in relation to the first cut-oil mechanism which operates on the web of the formed material.

Fig. 12 is a fragmentary side elevation illustrating the stock in completely severed relation but in lengths in relation to a second cutter shown by dotted lines.

Fig. 13 is an enlarged fragmentary view illustrating a section of stock in relation to one pair of a series of curving rolls which is the final step in the forming of the material into garment hanger yokes.

Fig. 14 is a fragmentary inverted side elevation of a garment hanger yoke.

In Figs. 1-1A, the steps of the method and.

apparatus by which the same may be performed are diagrammatically illustrated and the'various instrumentalities are conventionally shown, and it should also be understood that in the accompanying drawings I have not attempted to show the various parts to scale or in relative proportions.

I represents a roll of paper stock which I, by my method, convert to rigid stock or material of T-section providing a top flange portion of substantial width and .a central web portion as illustrated in Figs. 11, 12 and 14 where the shape and section of the material are illustrated.

The web 2 of paper is drawn from the roll I and through suitable feeding and straightening rollers 3, 4, whereby the curl of the web is substantially removed. The paper is then passed through a slitting couple 5 which divides the web longitudinally, as shown in this apparatus, into three strips or piles and led through the feeding roller 6 and guiding roller 1 to a gluing mechanism 8 by which the lower surface of all the plies is provided with a coating of glue or adhesive. The three plies are then passed around the guiding and reversing rollers 9; I0 and II in association with suitable intermediate rollers whereby the plies are brought into superimposed relation one with the other with their glued surfaces disposed upwardly. In this relation the plies are brought together over the guide roller l2 in the form of a three-ply strip is as is illustrated in Fig. 2.

This three ply strip is then passed between a scoring couple I 4 shown in enlarged detail in Fig. 3 which comprises coacting male and female rolls l5 and ii, the roll l5 having annular ribs and the roll l6 having annular grooves or recesses. The middle pair of ribs of the male scoring roller 15 serves to define initially the bent offsets ll, the portion between these offsets constituting a center or middle portion of the web. The outer pair of ribs and coacting grooves form longitudinal fold lines I8 along which the strip may be folded. This scoring and shaping divides the web into the central longitudinal portion, the outer longitudinal portions and the intermediate longitudinal portions. The scoring and shap ing rollers serve the additional purpose of pressure rollers and firmly unite the plies into strips. After this scoring and shaping operation, the multi-ply strip is subjected to several successive operations which result in the folding of the edge portions inwardly upon the intermediate portions. This may be practically accomplished by the mechanism such as shown in 'Figs. 4, 5, 6 and 7. The mechanism shown in Fig. 4 comprisesa pair of conical rollers H! which turn the side and intermediate portions upwardly into a generally flattened trough or channel section. a

The next step is to turn the edge portions into a right angular relation to the intermediate portions along the scoring line l8, as shown in Fig. 5,

and this may be accomplished by the opposed flanged rollers 20, the face of the roller engaging the edge portions and turning them upwardly while the lower flange of the rollers supports the intermediate portions (Fig. 5).

The next step is to turn the edge portions inwardly to substantially collapsed position on the intermediate portion, as shown in Fig. 6, and this may be accomplished by opposed grooved rollers 2|. The succeeding step is that these inturned portions are folded firmly upon the intermediate sections and pressure pp e e to so that the glued surfaces are effectively adhered together. This may be accomplished by the meshing rollers 22, the faces of which are preferably knurled.

At the steps 6 and I the material is preferably compressed slightly and transversely. The doubled portions are then folded upwardly into a trough-like relation and this may be accomplished by a die-like forming member 23 through which the strip is drawn, the die member being suitably shaped to gradually turn the infolded portions to the position shown in Fig. 8 in which position glue or suitable adhesive is applied into the trough thus provided as by means of the nozzle 25.

A substantial quantity of glue is applied at this point, so that when the parts are fully compressed as will be described, the glue squeezes up between the abutting surfaces of inturned portions which constitute the web and also the edges of these inturned portions are adhered to the central portion. The adhesive also serves as a stiffening medium.

Following the application of the adhesive, the infolded portions are brought into side by side abutting relation as shown in Fig. 9, the rollers 26 having flanges 21 which provide a groove 28 receiving the infolded portions and applying radial pressure thereto so that these infolded portions are forced or compressed radially relative to the roller and into abutting sealing and supporting relation to the central portion of the web. This step is quite clearly illustrated in Fig.9.

The following step illustrated in Fig. may be performed by means of the pressure rollers 29 which engage opposite sides of the infolded web portions, forcing and compressing thern together and further adhering them, the thus formed strip being supported by the grooved roller 30 so that there is a compound compressing movement for compressing and firmly adhering the material in its final T-shaped stock, as shown in Figs. 11, 12 and 14.

This brings the stock to its final T-section, as shown in Fig. 11, in which figure I illustrate the stock in relation to a pair. of coacting j cutters 3|, 32 which form V-shaped cuts in the Web, these cutters acting in a horizontal direction. The cutter 33 acts at right angles to the cutters 3i and 32 and is designed to cut through the flange of the T-shaped stock.

The purpose of the V-shaped cutters is to provide the beveled ends 34 for the web portion 35 of the stock when it is intended for use as a garment hanger yoke, as shown at 38 in Fig. 4.

When the stock is to be used for garment hanger yokes, it is curved, as shown in Fig. 14, and this is accomplished by passing through a series of

curving rollers

31, 38, both of which are flanged so that the stock is supported against distortion while it is being curved. This curving operation is performed before the setting of the glue or other adhesive. The severed stock is fed to these forming

rollers

31, 38 positively by a series of pressure and feed rolls 39 which prevent the stock opening up before the adhesive has set. The curving rollers, or certain of them, may, if desired, be heated to facilitate the setting of the adhesive. If desired, the web portion may be indented orcrimped to facilitate curving or where greater curvature than that illustrated is desired.

By this method, very rigid garment hanger yokes or rigid stock desired for other purposes may be very rapidly and economically produced. While the method is well adapted for use in making garment hanger yokes, the product is also desirable for various other purposes, particularly at the present time when conserving of metal is greatly important. The apparatus illustrated is highly eflicient. for the purpose but I am aware that other apparatus may be used with very satisfactory results.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. The method of fabricating garment hanger yokes and the like of paper stock comprising feeding a web of paper and slitting longitudinally into a plurality of strips of equal width, applying adhesive to the strips, and superimposing the strips to provide a multi-ply strip having an adhesive coated surface, scoring the said multi-ply strip longitudinally to facilitate folding and provide a central portion, a pair of opposed edge portions and intermediae portions between said edge and central portion, successively folding the edge portions to a substantially right angular position and then inwardly upon and into adhering relation with the said intermediate portions, turning the thus doubled portions to an angular relation to said central portion, depositing further adhesive upon said central portion, folding the said double portions together and compressing them edgewise upon the said central portion and compressing the infolded portions against each other thereby providing a central web portion in supporting relation to said central portion and to the flange constituted by said central portion of said strip, severing into lengths by forming V-shaped cuts through the said central web portion and cuts through the said flange portion coincident and normal to the said V- shaped cuts, whereby to define lengths, the ends at the web portion or which are beveled, and thereafter conforming the said lengths into curvilinear outline by gradually concaving the same on the web side thereof, all of the said conforming steps being performed prior to the setting of the adhesive.

2. The method of fabricating garment hanger yokes and the like of paper stock comprising feeding and superimposing strips bearing adhesive to provide a multi-ply strip. scoring the said multl-ply strip longitudinally to facilitate folding and provide a central portion, a pair of opposed edge portions and intermediate portions between said edge and central portion, folding the edge portions inwardly upon and into adhere ing relation with the said intermediate portions, turning the thus doubled portions to an angular relation to said central portion, depositing further adhesive upon said central portion, folding the said double portionstogether and compressing them edgewise upon the said central portion and compressing the infolded portions against each other thereby providing a central web port on in supporting relation to said central portion and to the flange constituted by said central portion of said strip, severing into lengths by forming V-shaped cuts through the said central I web portion and cuts through the said flange portion coincident and normal to the said V-shaped cuts, whereby to define lengths, the ends at the web portion of which are beveled, and thereafter conforming the said lengths into curvilinear outline by gradually concaving the same on the web side thereof, all of the said conforming steps being performed prior to the setting of the adhesive.

3. The method of fabricating garment hanger yokes and the like of paper stock comprising feeding and superimposing strips bearing adhesive to provide a multi-ply strip, scoring the said multi-ply strip longitudinally to facilitate folding and provide a central portion, a pair of opposed edge portions and intermediate portions between said edge and central portion,

folding the edge portions inwardly upon and into adhering relation with the ,said intermediate portions, folding the said double portions together to form a central web portion and compressing them edgewise upon the said central portion to form a flange portion and severing into lengths by forming V-shaped cuts through the said central web portion and cuts through the said flange portion coincident and normal to the said V-shaped cuts, whereby todefine lengths, the ends at the web portion of which are beveled, and thereafter conforming the said lengths into curvilinear outline by gradually concaving the same on the web side thereof, all of the said conforming steps being performed prior to the setting of the adhesive.

4. The method of fabricating paper stock into strips of T-section comprising feeding a web of paper and slitting longitudinally into a plurality of strips of equal width, applying adhesive to the strips, and superimposing the strips to provide a multi-ply strip having an adhesive coated surface, scoring the said multi-ply strip longitudinally to facilitate folding and provide a central portion, a pair of opposed edge portions and intermediate portions between said edge and central portion, successively folding the edge portions to a substantially right angular position and then inwardly and into adhering relation with the said intermediate portions, turning the thus doubled portions to an angular relation to said central portion, depositing further adhesive upon said central portion, folding the said double portions together and compressing them edgewise upon the said central portion and compressing the infolded portions against each other thereby providing a central web portion in supporting relation to said central portion and to edges thereof inwardly a termediate portions between said edge and central portions, folding the edge portions inwardly upon and into adhering relation with the said intermediate portions, and folding the said double portions together and compressing them edgewise upon the said central portion to define a T-shaped cross sectional outline.

6. The method of fabricating paper garment hanger yokes, comprising feeding a multi-ply strip of paper while progressively forming the same to stock of T-section by folding the side plurality of times, severin-g said stock into lengths by a 'V-shaped cut through the web of said T-section and a cut through the flange thereof coincident with and normal to said first named cut whereby to define lengths having angled ends on the web thereof, and subsequently conforming said lengths into curvilinear outline by gradually concaving the same on the web side thereof.

7. The method of fabricating papergarment hanger yokes, comprising feeding a multi-ply strip of paper while progressively forming the same to stock of T-sectlon by folding the side edges thereof inwardly a plurality of times, severing said stock into lengths by a V-shaped cut through the web of saidv T-section and a cut through the flange thereof coincident with and strip of paper while progressively forming the same to stock of T-section, and severing said stock into lengths by a cut through the web of said T-section and a cut through the flange thereof coincident with and normal to said first named cut whereby to define lengths having angled'ends on the web thereof.

9. The method of fabricating garment hanger yokes, comprising feeding and uniting a plurality of paper strips, gradually and progressively folding the edges of the resultant multi-ply strip inwardly upon the body thereof and toward and into contact with one another by externally applied forces alone, compressing said edges centrally of the strip and onto thecenter portion thereof to define a T-shaped cross sectional outline, severing the thus folded and compressed stock by an angular cut directed transversely of the web of said T-shaped outline and parallel to the flange thereof and by a further out coincident with said out and normal to the flange whereby to define lengths having angular-ended webs, and gradually curving said lengths by bending the same concavely on the web side thereof.

10. The method of fabricating garment hanger yokes, comprising folding the edges of an advancing multi-ply strip inwardly upon the body thereof and toward and into contact with one another to define a T-shaped cross sectional outthe flange constituted by said central portion of ally curving said lengths by bending the same concavely on the web side thereof.

11. The method of fabricating garment hanger yokes, comprising progressively folding an ad;- vancing strip to define a cross-sectional outline including a flanged portion and a web extending normal thereto, severing the thus folded stock by an angular cut directed transversely of said web and parallel to said flanged portion and by a further out coincident with said cut and normal to the flanged portion, whereby to define lengths having angular-ended webs, and gradually curving said lengths by bending the same concavely n the web side thereof.

12. The method of fabricating garment hanger yokes, comprising progressively folding an advancing strip to define a cross-sectional outline including a flanged portion and a'web extending normal thereto, severing the thus folded stock, and gradually curving said lengths by bending the same concavely on the web side thereof.

13. The method of fabricating paper stock into rigid strips of T-section, comprising feeding and uniting a plurality of paper strips, folding the edges of the multi-ply strip inwardly upon the body thereof and into contact with one another, and compressing said edges centrally of the strip and onto the center portion thereof to define a T-shaped cross sectional outline.

14. The method of fabricating paper stock into rigid strips of T-section, comprising advancing a multi-ply strip formed of aplurality of plies of adhered paper strips, scoring the said multiply strip longitudinally to facilitate folding and provide a central portion, a pair of opposed edge portions and intermediate portions between said edge and central portions, folding the edge portions inwardly upon and adhering to the said intermediate portions, folding such double portions together-and compressing themiedgewise upon the said central portion and adhering them to each other and to said central portion, and compressing the infolded portions against each other thereby providing a central web portion in supporting relation to said central portion.

15. The method of fabricating paper stock into rigid strips of T-section, comprising advancing a multi-ply strip formed of a plurality of plies of adhered paper strips, scoring the said multi-ply strip longitudinally to facilitate folding and provide a central portion, a pair of opposed edge portions and-intermediate portions between said edge and central portions, folding the edge portions inwardly upon and adhering to the said intermediate portions, and folding such double portions together and compressing them edgewise upon the said central portion and adhering them to each other and to said central portion to deflne a T-shaped cross sectional outline.

16. The method of fabricating paper stock into rigid strips of T-section comprising advancing a multi-ply strip formed of a plurality of plies of adhered paper strips, scoring the said multi-ply strip longitudinally to facilitate folding and provide a central portion, a pair of opposed edge portions and intermediate portions between said edge and central portions, folding the edge portions inwardly upon and adhering to the said intermediate portions, and folding the said double portions into side by side adhering relation and forcing them against the said central portion to define a T-shaped cross sectional outline.

17. The method of fabricating paper stock into rigid strips of T-section comprising advancing a multi-ply strip formed of a pluralityof plies of adhered paper strips, folding the edge portions inwardly upon and adhering to adjacent portions with a central portion of the strip between their infolded edges, folding the said double portions together and compressing them edgewise upon the said central portion and adhering them to each other and to said central portion, and compressing the infolded portions against each other thereby providing a central web portion in supporting relation to said central portion.

18. The method of fabricating paper stock into rigid strips of T-section comprising advancing a multi-ply strip formed of a plurality of plies of adhered paper strips, folding the edge portions inwardly upon and adhering to adjacent portions with a central portion of the strip between their infolded edges, and folding the said double portions together and compressing them edgewise upon the said central portion and adhering them to each other and to said central portion to define a T-shaped cross sectional outline.

LEONARD A. YOUNG.