US1878374A - Method of producing artificial silk or the like - Google Patents

Description

P 1932- J. BRENZINGER 1,878,374

METHOD OF PRODUCING ARTIFICIAL SILK OR THE LIKE Filed June 20, 1930 3 Sheets-Sheet 1 4 nvemtoz:

/1 216 finer; 72 71567 Gum/mug p 1932- J. BRENZINGER METHOD OF PRODUCING ARTIFICIAL SILK OR THE LIKE Filed June 20, 1930 3 Sheets-Sheet 2 i v vwe 11 01 *3 LJZIZL-ZAS Brenza'ye r @3913 Clue (A4013 Sept. 20, 1932.

J. BRENZINGER METHOD OF PRODUCING ARTIFICIAL SILK OR THE- LIKE Filed June 20. 1930 3 Sheets-Sheet 3 I Qua/nu I, Fig. 2 is a detail view, partly in Patented Sept. 20, 1932 UNITED STATES ,PATENT' OFFICE JULIUS BREN'ZINGER, OF FAIRFIELD, CONNECTICUT, ASSIGNOR TO, AXEL V. IBEEKEN,

OF BLOOMFIELD, NEW JERSEY Application filed June20,

The present invention relates to a method of producing artificial silk or the like, and has for its main object and feature the production of a thread-like materialof a more uniform character than has heretofore been possible, from a synthetic fluid material.

In the accompanying drawings is shown a preferred form of apparatus by means of zvhich the method may be carried into prac- In said drawings: I

Fig. 1 is a somewhat diagrammatic view of the more important elements of a rayon spinning machine; 1 r k section, showing more particularly the means for actuating the thread-guide;

Fig. 3 is a diagrammatic view of a typical lay or winding of the thread-like material on a spool;

Fig. 4 is a diagrammatic View showing the "step of washing and dyeing; and

F1g. 5 is a view similar to Fig. 3 but showin the effect'of drying the material. In the production of artificial silk or the like, the thread-like material issues from a. spinnerette immersedin a bath, and the thus newly-formed or green thread-like material passes then directly to a win ding mechanism consisting essentially of a thread-guide and a rotatable spool, said elements having a transverse movement one with relation to the other so that the thread-like material is wound cross-wise into a number of superposed series of convolutions first in one and then in the other direction.

One difliculty heretofore encountered in the art is a tendency toward a lack ofuniformity in character of the thread-like material, which tendency appears to be caused by the fact that the material during the various processes is subjected to unequal strains on different portions thereof or to too severe strains. It must be borne in mind that the thread-like material is newly formedpr strains can be caused by shrinkage due to the drying or finishing of the material; or, they may be caused by excessive pull of the spool 1930. Serial No. 462,493.

or take-up device brought about by the constantly increasing diameter. of the spool due to accumulation of material thereon because, as the spool increases in diameter, more-and more thread will be wound per revolution of the spool.

The invention consists essentlally in laying spool. Dueto the slack in the convolutions,

numerous interstices are formed in the material so that, during the washing or washing and dyeing process, the liquid will penetrate the spool more readily than would otherwise be the case thereby reducing, very materially, the time necessary to complete the process. In conjunction with the above, the invention further consists in supplying the synthetic 'fluid, from which the threadlike material is formed, at a rate that is proportional to the speed of the take-up of the material, and winding the newly-formed or green thread-like material at a speed proportional to the rate of supply of said fluid material. In this way gradual attenuation in the formation of the thread-like material is prevented and, consequently, the slack convolutions above referred to will consist of thread-like material of substantially uniform character. 1 represents a pump of any suitablecharacter to deliver synthetic fluid material supplied by duct 2 to spinnerette a in setting bath 3 where the thread, or threads, 4, or the like, is formed, said thread-like material being wound on rotatable. spool 5 as it emerges from the bath. 6 indicates a threadguide to lay the thread on the spool. In Fig. 3 is shown diagrammaticallya typical lay of thethread according to this inventlon. As there shown thread 4 is laid in a series of convolutions I) crosswise first in one and then in the other direction, said series being superposed. Convolutions b are provided with a slack 0 which, in the exemplification shown,'takes' the form of undulations d in helical convolutions b. It will be apparent that the slack may be produced by a relative movement of the spool and thread guide, one with relation to the other. This can be obtained by moving both the spool and the thread-guide, or it can be produced by moving one of these with respect to the other. In the present exemplification of the invention, the following construction is used. The spool is rotated by gears 18 and 19, and thread uide 6 is mounted on a reciprocatory bar 60 slidable in bearings 61. 62 is a rotating cam on shaft 63, on which shaft is a'guide 64 that moves a reciprocatory rack-member 65 actuated by cam rolls .66 that engage cam 62. Said rack'member is provided with teeth at its upper end that engage a pinion 67 on shaft 68, and on the latter shaft is mounted another pinion 69 that engages a rack 70 on bar 60. Rotation of cam 62 therefore causes a back and forth movement of bar 60 and hence of thread-guide 6. Said thread-guide is mounted to rock or oscillate on center 71 of bar 60, this movement being accomplished by lever 72 and link 73, pivotally connected at 74, said lever 72 also being pivotally connected to crank pin 75 of shaft 76. Rotation of crank pin 75 vibrates the thread guide. Shaft 76 is mounted on-a bracket 77, carried by bar 60, and said shaft is rotated by any suitable me ans.

The means to coordinate the speed at which the thread is being wound and the rate at which the synthetic fluid material is being supplied will now be described. This coordination may be brought about by varying the speed relation of the spool and pump. The

speed of the spool can be gradually diminished as the diameter of the wound material increases, or the rate of delivery of the synthetic fluid material can be increased as the diameter of the wound material increases, and thelatter construction is here followed. Shaf t'S, on which the spool is mounted, is driven at a substantially constant speed from mot r 9, the transmission members being here as follows: sprocket wheel 10, chain 11, sprocket wheel'12, shaft 13, sprocket wheel 14,chain 15, sprocket wheel 16, stub shaft 17,

pinion 18 and gear 19 on shaft 8. Pump 1 is here driven from the motor through suitable change speed gearing which here takes the following form: Shaft 13 carries a pulley 30 to receive belt 20 that extends to another pulley 31 on shaft 21; shaft 21 carries a bevel pinion 22 that meshes with. bevel gear 23 which latter, in turn, drives shaft 24 by means of pulleys 25 and belt 26. Shaft 24 carries a gear 27 that meshes with gear 28 on pump shaft 29. Pulleys 30 and 31 on shafts 13 and 21 have cone-shape faces which are movable thereby changed and the speed of shaft 21 varied. The device for effecting this change automatically is here as follows: One or both of the faces of each pulley 30 and 31 are slidable on their supporting shafts. 32 and 33 indicate .two levers, each pivoted at an intermediate point 34 or 35, and each lever is pivotally connected at 36 or 37 to one face of pulley 30, and at 38 or 39 to one face of pulley 31; The lower ends of levers 32 and 33 are urged toward each other by spring 40 and are providedwith cam rolls 41 to engage cam or wedge 42. This cam carries a rack 43 engaged by pinion 44 to which latter is attached a ratchet 45. This ratchet 45 is driven by a pawl 46 pivotally mounted on rocking frame 47 supported on pivot 48. Therocking motion of this frame causes the pawl to turn the ratchet and the pinion thereby causing the wedge to enter more and more between rolls 41, which action in turn swings levers 32 and 33 to move the faces of pulley 30 nearer together and the faces of pulley 31 further apart. This movement, it will'be observed, changes the speed relationship of the pulleys and belt and increases the speed of the pump 1 so that fluid material is delivered by it at an increasing rate. 49 indicates a stop pawl for ratchet 45. Rocking frame 47 is actuated by eccentric 50 carrying ratchet 51, which ratchet is moved by pawl 52 carried by eccentric 53. 54 indicates a stop pawl for ratchet 51. Eccentric 53 is driven by belt 55 and pulleys 56 and 57, the latter of which pulleys is mounted on shaft 8 carrying the spool.

Motion may be imparted to shaft 63 of cam 62 by suitably proportioned gearing, indicated diagrammatically at 78 and deriving its power from shaft 13. 7

It will now be understood that the newlyformed or green thread is laid as indicated by way of example in Fig. 3. After a sufiicient quantity of; thread-like material has been wound on said spool, it is' removed from the spinning machine and placed with other spools in a washing machine 79 (Fig. 4) where the washing liquid is drawn through the interstices into the interior of the spool in a manner well understood.

After the washing operation is finished, the spool may be subjected to a dyeing and other operations. Whatever the character of these, said spool is finally subjected to a finishing operation, which may be simply the step of drying. During this latter process, the thread-like material shrinks, as indicated diagrammatically in Fig. 5, said shrinkage being within the amplitude of the slack of the convolutions so that no unequal strain is placed on different portions of the material.

This application is a continuation in part of application Ser. No. 378,064 filed July 13,

posed turns, each turn receiving a plurality of undulations.

of wound thread or the like composed of a plurality of superimposed layers, the thread of each layer extending in a plurality of complete turns with the turns of adjacent layers wound in opposite directions, the thread of each turn having a plurality of undulatlons to render it slack and thereby to make the"v body more easily penetrable by liquid.

S1gned at Bridgeport, in the county of Fairfield and State of Connecticut, thls 18th day of June, 1930.

JULIUS BRENZINGER.

tending in the otherdirection in a plurality I of turns, said slack rendering the wound body ithusdproduced more easily penetrable by 1qu1 2. The method .of windin green thread, or the'like, which consists in ceding a thread by forming it from a synthetic material, and then guiding and winding the advancing thread to thereby lay it substantially devoid of tension in a slack undulating path extending first in one direction in a plurality of turns andthe'n extending-tin the'other direction in a plurality of turns, said slack-rendermg the wound body thus produced more easily penetrableby liquid.

3. The method ofwindin green thread, or the like, which consists in ceding a thread by forming it from a synthetic material, and then guiding and winding the advancing thread to thereby lay it substantially devoid of tension in a slack undulating path extending first in one direction in a plurality of turns and then extending in the other direction in a plurality of turns, said slack rendering the wound body thus produced more easily penetrable by liquid, and said slack being of sufiicient am litude to admit of subsequent shrinking o the thread-like material substantially without placing unequal strains on different portions thereof, and then subjecting the wound material to a finishin' process that shrinks it within the amplitude of the slack of the convolutions.

4. As a new article of manufacture, abody of helically wound thread, or the like, composed of a plurality of superimposed layers, the threads of adjacent layers extending in opposite directions helically and each turn of the helix having a plurality of undulations substantially in the plane of the layer containing the helix, the said undulations being of lesser amplitude than the length of one turn of the helix. s

5. The method'of winding thread, or the like, which consists in laying said thread in an undulating helical path first in one direction into a plurality of turns and then in the other direction into a plurality of superim- 6. As a new article of manufacture, a body

Images