US1990849A

US1990849A - Machine for and method of forming tapes

Info

Publication number: US1990849A
Application number: US643722A
Authority: US
Inventors: Wagon Jean
Original assignee: Individual
Current assignee: Individual
Priority date: 1931-12-10
Filing date: 1932-11-21
Publication date: 1935-02-12
Anticipated expiration: 1952-02-12
Also published as: DE616243C

Description

Feb. 12, 1935. WAGON 1,990,849

MACHINE FOR AND METHOD OF FORMING TAPES Patented feb. 12, 1935?4 PATENT oFFicE Y MACHINE FOR AND METHOD F FORMING TAPES Jean Wagon, Paris, France Application November 21, 1932, ySerial No. 643,722

Claims.

5 and confectionery, is generally composed of a plurality of parallel strands held together only j by glue or a similar adhesive. In actual prac'- tice, it has been found that tape of this kind sometimes falls apart when the glue cracks or breaks. Various remedies have been proposed for overcoming this diiiiculty but none have entirely succeeded. For example, it has been suggested that the longitudinal strands oi which the tape is composed be held together by a spiral strand or strands enveloping all of the longitudinal strands. But, when tape is manufactured in this way, the lateral pull of the spiral strand on the longitudinal strands causes the latter to bunch so as to no longer lie in juxtaposition.

One of the objects of the present invention is to provide a spirally wound tape wherein none of the longitudinal strands are superposed but lie in juxtaposition to one another to form a ribbon of substantially constant width.

Another object is to provide a method for winding al spiral strand around a plurality of longitudinalstrands so that the latter remain in juxtaposition.

A further object of the invention is to provide a machine operative to exert an increased tension on the lateral strands forming part of a plurality of `juxtaposed strands, whereby a spiral 'strandwound thereabout no longer acts to move adjacentlongitudinal strands out of the plane in which they lie. t

Still further objects will appear in the course of the detaileddescription now to be given with reference to the .accompanying drawing in which:

A Figure 1 is an elevation showing one illustrative embodiment of the invention;

Figure 2 is an axial enlarged detail of the more important portions of the machine represented in Figure 1; K

Figure 3 is a perspective showing, in detail, how the longitudinal strands are maintained under tension and in proper relation to one another during and after the operation of winding a spiral strand thereabout.

Referring to the various iigures of the drawing, there is shown an assembly comprising a frame a, a post or support b, a hollow sleeve c rigidly supported on post b, a guiding cylinder f provided with a plurality of 'grooves and Belgium December 10, 1931 l adapted to guide the longitudinal strands of which the tape is composed, a at support or platform' g positioned to receive the, strands passing from guide'f, a' rotatable collar or journal h supported on ball bearings on elemente and driven by a suitable transmission such as is shown diagrammatically in Figure 1, a pair of spools supported on a pair of radial arms -rigidly mountedton collar h and adapted to provide strands to be spirally wound about the l0 longitudinal strands of the tape, a pair of braking guides k adapted to exert a braking action on spiral strands :i being fed from spools i, a

guiding roller l receiving thread or strands from a plurality of spools n, a grooved roller m posil5' tioned to receive strands from roller l and to ,guide the latter through element c onto grooved guide f, a braking elementA or elements o. formed of .a pair of spaced meshing teeth and interposed between guides l and m, elements o 20 serving to maintain at least the most lateral strands composing the tape under increased tension, a support p having-av vertical guiding slot formed therein, a -pair of guiding and tensing ,rolls .q and q1 adjustably supported in the 25 'Y guiding slot in support p, roll q resting by its Weight on roll q1 and being positioned to lie tangentially, and practically in contact with one end of element g, an adhesive container 1', a

gas or electric heater r1v adapted to maintain 30 the glue or adhesive-in 'a liquid state,` a roller s extending into the adhesive contained, in element r, a pair of lateral supports p which may be made integral with support p `Aand having vertical gluiding slots formed therein; a pair of 35 superposed' rollers s y and s resting by theirweight on one another and on cylinder s, a drier of conventional design t and a winding-up spool u.

The hereinabove described assembly operates 40 in the following way: motive power for rotating elements h, t and u is provided by a motorand conventional transmission as shown in Figure 1; assuming a plurality of longitudinal strands to have been. drawn successively over elementi 45 through braking element o, over guide roller n through c over roller f, into contact with support y; then successively over rolls q and q1 in the manner shown in Figure 3, and nally over rollers s and sf through drier t onto wind-up 50 spool'u, rotation of the motor will cause dried t and wind-up spool u to draw lateral longitudinal strands d and central longitudinal strands y el through the machine while spiral thread y' l is wound by spools i around said strands and around support a; the spirally wound thread will be then drawn through the adhesive and, after being squeezed between s1 and s to remove excess adhesive, will pass through drier t and be wound in a nished condition on spool u.

The main contribution of the present invention resides 1) in employing braking element o for lateral threads d so 'as to increase the tension on the latter and so prevent their moving inward under the action of spiral threads 7', (2) in extending platform g toa point just adjacent roller q so as to'mainta-in a lateral pull on spiral threads i and so further prevent guided tangentially betweena pair of superposed rollers without passing from over the surface of one onto the surface of the other in the manner shown in Figure -3, lateral collapse of the tape may occur and lateral strands d maymove inward to lie in superposed, instead of juxtaposed, relation to central strandse.

The invention is not to be taken as limited vto the particular tape above described: thus,`

some of the strands e may be deflected either upwardly or downwardly prior to the spool winding operation and may be deflected back to lie in superposed relation to spirally wound tape forni l as above described; several bobbins of the type, may be used instead of'oneandmay be even mounted to turn in opposite directions so that spirals i are laid in opposite directions on the longitudinal strands; all of central strands e may be maintained under tension in breaking elements of the type o in addition to lateral strands d, etc.

What I claim is:- 1. A method of forming a wrapping tape comprising the steps of arranging a pair of lateral strands and a plurality of central vstrands to lie under tension in substantially parallel relation, subjecting said lateral strands to additionaltension, wrapping a strand around said lateral strands and binding all of said strands together with an adhesive. A

2. In combination a machine including means for drawing a pair of lateral strands and a plurality of central strands under tension there-- through, means forA winding a strand around said lateral strands, and means for applying adhesive to all of said stranda-means for applying more tension to said lateral than to said central strands during their passage through the machine.

3. A structure as deflned in claim 2 'in com-1 bination with a support mounted in the course of movement of said lateral and said central strands, and a guide roller positioned adjacent A oneend of said support and in substantially tangential relation thereto.

4. A structure as deilned in claim 2 in combination with a support for said pair of lateral and said plurality of central strands mounted adjacent the course of movement of said strands, a rst guide roller positioned adjacent one end of said support and in substantially tangential relation thereto, and a second guide roller Apositioned adjacent said first guide roller, whereby the various strands may pass from said support over the surface of said first roller, then between said rollers, and ilnally over the surface of said second roller.

5, Ihe method of operating a machine provided with means for guiding a plurality ofY strands therethrough, a support positioned along the path of movement of said strands, and a bobbin operative to wind a strand around said plurality of strands comprising the steps of' guiding the strand coming from said bobbin so as to pass through said support as well as around the various other strands, maintaining all of `the strands in substantially the same relative transverse position as they occupy when they slide oil! of said support, and passing all of said strands through an adhesive.

" JEAN WAGQN.