US1980610A - Rayon spinning machine - Google Patents

Description

Filed May 9, 1930 avwe/ntoz 3 Julius firelzzz'qger Gum/" Patented Nov. 13, 1934 =RAYON SPINNING MACHINE Julius' Brenzinger; Fairfield, Conn, assignor to The Max Ams Chemical Engineeringv Corporatron, Bridgeport,.0.onn., a. corporationof Connecticut Application May 9, 1930, Serial No. 450,950

. 4 Claims.

.The present invention relates to rayon-spinning machines, by whichis meant machines that form threads or the like from a synthetic fluid material.

Machines of this type are characterized by a pump thatdelivers fluid material to a setting bath and a spool which winds the thread thus formed as it emerges from the bath. As wound material accumulates on the spool' its diameter increases and, consequently, said spool winds more and 10 more'thread per revolution as its diameter increases. It has heretoforebeen the practice to have the spool rotate at a uniform speed and to have the, pump deliver fluid material at a constant rate. I have found that, in these circumstances, the. thickness. of the thread gradually diminishes asthe diameter of the wound material on the spool increases. The main object and feature of this invention is to so coordinate the speed at which the thread is being wound and the rate at which the fluid material is being supplied that the thread will have substantially the same thickness throughout.

In the accompanying drawing the invention is shown in a concrete and preferred, though somewhat diagrammatic form, the single figure of the drawing representing so much of a spinning machine as is essential to the understanding of the invention.

1 represents a pump of any suitable character to deliver fluid material supplied by duct 2 to setting bath 3 where thread 4, or the like, is formed, said thread being wound on rotatable spool 5 as it emerges from the bath. 6 Indicates a thread guide that passes back and forth to lay the thread in the proper manner on the spool. It will be understood that the continued operation produces a body of wound material '7 on the spool, that this increases the diameter of the wound material and winds the thread at a constantly increasing speed.

In the exemplification of the invention here shown, shaft 8, on which the spool is mounted, is driven at a substantially constant speed from motor 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 1'7, pinion 18 and gear 19 on shaft 8. Pump 1 is here driven from the motor through suitable change speed gear- ""50 ing 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 "55 24 by means of pulleys 25 and belt 26. Shaft 24 -ment being such that when the faces of flap- "6 0 proach each other the faces of 31' recede' from each other and .vice versa, andit will be'under- 'stood the effectivediameters of the two pulleys withrespect ,to belt 20 are thereby changed and "thespeed' of shaft 21 varied. The device for "65 effecting this change automatically is 'heraas 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, ea ch pivoted at an "intermediate'point'34 or 35, and each-lever is "70 pivotally connected" at 36*or 37 to one'faceof 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 provided with cam rolls 41 to engage cam or wedge 7'5 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 v 48. The rocking motion of this frame causes 0 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 A nearer together and the faces of pulley 31 fur-- 5 ther apart. This movement, it will be observed, changes the speed relationship of the pulleys and belt and increases the speed of the pump so that fiuid material is delivered by it at an increasing v rate. 49 indicates a stop pawl for ratchet 45. -90 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 5'7, the latter of 5 which pulleys is mounted on shaft 8 carrying the spool.

At the beginning of the operation, the thin end of the wedge is between rolls 41 and the pump is being driven at a speed which will cause it to 1 deliver fluid material at a rate that coordinates with the effective diameter of the spool. Shaft 8 of the spool runs at a constant speed. As wound material accumulates on the spool, its effective diameter increases and it winds more and more thread per revolution. Rotation of spool shaft 8 causes the wedge to enter more and more between the rolls and to increase the speed of the pump to deliver fluid material at v, an increasing rate so that a thread of substan- "HQ tially uniform thickness is produced'during ,a

given cycle of operation of the machine. The action can be made very gradual, in fact the rise of the wedge can readily be made as low as one inch per hour, but, whatever the increase in effective diameter of the spool,'the parts are so proportioned that a corresponding increase in speed of the pump takes place.

When the spool is full or the winding operatio is finished, the pawls that move and support the wedge are released and the wedge is lowered manually after which a new cycleof operations can begin.

I claim:

1. A rayon spinning machine including: a pump to deliver fluid material to be formed into thread or the like, a rotatable spool to wind the thread as it is being formed with a gradually accelerated effective speed as the diameter of wound'material increases thereon, means to rotate the spool at a substantially constant speed,

'a change-speed transmission means to drive the pump, and a rectilinearly movable taper-member actuated by the rotation of the spool to autogradually increase thespeed of the pump.

matically adjust said transmission means to 2. A rayon spinning machine including: a

pump to deliver fluid-material to beformed into thread or the like, a rotatable spool 'to wind the thread as it is being formed with a gradually accelerated effective speed as the diameter of wound material increases thereon, a changespeed device having a constant-speed member and a variable-speed member, motor means to drive the constant-speed member, transmission means I to drive the spool from the constant-speed member, transmission means to drive the pump from the variable-speed member, and a rectilinearly movable tape-member actuated by the rotation of the spool to vary the speed of the variablespeed member in accordance with the number of revolutions of the spool in a given cycle.

transmission means to drive said pump and spool and to automatically vary the speed relation of said elements to thereby coordinate the rate at which the fluid is being supplied and the speed at which the thread is being wound, comprising a change-speed device and a rectilinearly movable wedge-member. actuated by the rotation of the spool to control the change-speed device.

4. A rayon spinning machine including: a pump to deliver fluid material to be formed into thread or the like, a rotatable spool to wind the the thread as it is being 'formed to produce a. body of wound material of increasing diameter, and transmission means to drive said pump and spool and to automatically vary the speed relation of said elements to thereby coordinate the rate at which the fluid is being supplied and the speed at which the thread is being wound, comprising a change-speed device having opposed pivotally supported members and a rectilinearly movable taper-member actuated by the rotation of the spool to engage between the opposed members to thereby control the change-speed device.

JULIUS BRENZINGER.

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