US1854150A - Godet wheel for artificial silk spinning machines - Google Patents

Description

April 12, 1932.A C. w. LAWSER GODET WHEEL FOR :ARTIFICIAL SILK SPINNING MACHINES Filed March 5, 1929 FIG. Z1

Var/

INVENTOR: Charles WLan/.361;

A TToRNEYs.

WITNESSES naar orties v(IiHl-)LRLES W. LAWSER, OF BALA, PENNSYLVANIA, ASSIGNOR T THE WICACO MACHINE CORPORATION, 0F PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYL- GODET WHEELFOR ARTIFICIAL SILK SPINNING MACHINES Application filed March V5, 1929. Serial No. 344,347.

This invention relates to godet wheels such as are used in articial silk (rayon) spin-I ning machines to draw upon the filamentsof the cellulose as they issue from the capillaries ,5' of the spinnerettes, and to deliver the bunched filaments, so formed to the funnel guides serving the rotating pots by action of which said filaments are twisted into yarns, and the yarns concurrently would under centrifugal action, into the form of annular cakes.

Such wheels are customarily made from glass; and, as heretofore constructed, their center holes were invariably larger than actually required due to shrinkagein the process of molding. Accordingly, in mounting the wheels on their driving spindles, they had to be individually centralized to prevent wobble and attendant harmful stretching of the cellulose filaments at high speeds. The

operation of properly mounting the wheels under this condition was not only tedious, but consumed considerable time in its accomplishment, and was therefore expensive from the standpoint of economic operation an maintenance of the spinning machines.

My invention is directed in part toward overcoming the above indicated handicaps of lprevious practice in this art; that is to say: I aim, through novel construction of the wheels, to dispense with the necessity for the individual centralizing operation heretofore required, and to attain this desideratum without added expense in the cost of manufacturing the wheels.

My invention is also in part directed toward preventinge-likewise through novel construction of the godet wheelsw-entry of fluid drip or splash into the journal boxes supporting the wheel spindles.

Still other objects and attendant advantages inherent in this invention will be manifest from the detailed description following when taken in connection with the attached drawings.

Fig. I shows a fragmentary cross section through a rayon spinning machine equipped with my improved godet wheels.

Fig. II is a longitudinal sectional view of one of the godet wheel mountings on a larger scale; and,

Fig. III is a frontal face view of my improved godetwheel.

The spinning machinechosen for the purwheels 6 at the top of the machine, and by said wheels redirected to pass downward into the funnel guides 7 These funnel guides7 are mounted on longitudinal supporting rails 8 attached to vertical slide rods 9 which are pivotally connected at their tops to opposite extremities of a rocking beam 10 secured to a shaft 11, said shaft having journal support in central bearings of the machine frame 5 and being constantly oscillated by suitable d means not shown. The parts just described constitute a motion by which the cellulose filaments F directed through the vertically reciprocating funnel guides 7 are built, layer by layer, into the form of cakes as they are twisted incident to being thrown by centrifugal action against the inside walls of the revolving receiving pots partly' shown at 12. Also, after common practice, the godet wheels 6 are mounted on spindles 13 which extend through journal boxes 111 fitted at opposite ends with ball bearings 15, as well as with protective packing rings 16.v As shown in Fig. I, the journal boxes 14 are supported on the top of the machine frame 5 at a slight inclination to the horizontal, and symmetrically grouped in pairs so that ythe spindles 18 may be driven, through the niedium of bevel gears 17, 18, from a centrally disposed longitudinallyextending master shaft 19.

VAlthough intended to function in the same manner, it will be observed that my improved godet wheel 6, as detailed in Figs. II and IIfI, differs from those of customary construction in that it is provided at the in side with a convergent central opening 20, which terminates in an axial hub cavity 21. rlhis cavity is occupied by a round edged polygonal securing nut 22 which, while restrained against rotation, has freedom for a certain amount of lateral play for a purpose later on explained. It will also be noted that the spindle 13 is, in the present instance, formed with a tapered shoulder 23 to fit the convergent central opening` 2O in the wheel 6, and beyond said shoulder, with a diametrically reduced threaded axial prolongation 2a adapted to engage the securing nut 22.

To prevent entry into the journal box let of corrosive iiuid carried along by the filaments F and thrown off as drip or splash by the godet wheel 6 incident to rotation high speeds, I provide said wheel, in addition to the usual peripheral flange 25., with a concentric annular flange 26 at the back arranged to proiect into a correspondingly configured recess 27 in the contiguous end of the ournal box 14.

In pr ctice, the threads 24 are made either right hand or left hand-depending on the direction of spindle rotation-so that the godet wheel 6 can be mounted simply by bringing it up to the end of the spindle 1.3 while the latter is revolving. r-"is the nut 22 takes hold, the wheel 6 is obviously drawn upon, and automatically centralized through coaction of the tapered shoulder 3 and t .ie convergent surface at 20, said nut adapting itself to the described coaction as permitted through the lateral freedom accorded it within the cavity 21 until tightening takes place. This entire operation consumes but a moment, and dispenses with the tedious centering by repeated trials as required vvitl godet Wheels of previous designs. The securing nut 22 is of course incorporated in the wheel, i. e. placed during the process. of moulding, and, by virtue of being enclosed in the hub. cavity 21, is completely surrounded and therefore protected, like the bearings 15 in the journal box 14e, against injury from drip or splash of the corrosive fluids cast off by the rapidly passing cellulose .filamentsv F. Moulding of any improved godet wheels 6 presents no difliculties over the method of procedure ordinarily followed nor, is it attended by increase in the cost of their manufacture as compared to godet wheels of the usual construction.

Having thus described my invention, I claim:

1. A godet wheel, for rayon spinning machines, having an internal cavity with a convergent approach adapted'to coact with a correspondingly tapered shoulder on a driving spindle in determining self-centralization of the wheel incident to mounting, an incorporated securing nut loosely mounted in the cavity to accommodate lateral` movement and engaging a threaded axial prolongation of the spindle, and means to prevent rotation of the nut.

2. A godet Wheel, for rayon spinning machines, made from glass or the like having a central internal hub cavi ty with a convergent approach adapted to coact with a tapered shoulder on a driving spindle in determining self-centralization of the wheel incident to mounting, a molded-in securing nut loosely mounted in the cavity to accommodate lateral movement and engaging a threaded axial prolongation of the spindle, and means to prevent rotation of said nut in the hub cavity.

3. A godet wheel, for rayon spinning machines, having a central polygonal-section hub-cavity ope-ning with a convergent approach adapted to coact with a tapered shoulder on a driving spindle in determining selfcentralization of the wheel incident to mounting, and a securing nut protected wit-hin the hub cavity at the terminus of the wheel opening for engaging a threaded end prolongation of the driving spindle, said nut being of polygonal contour with rounded edges and loosely mounted in the cavity to respectively prevent its rotation and to accommodate lateral movement thereof.

4. As a new article of manufacture a godet wheel, for rayon spinning machines, having an internal shaft-end receiving angularlyshaped cavity with a convergent approach and an integral annular guard flange about said approach.

5. As a new article of manufacture a godet wheel of frangible material, for rayon spinning machines, having an intern al axial shaftend receiving polygonally-contoured hub cavity with a convergent approach and an integrally-formed annular laterally-projecting guard flange concentrically about said ap,- proach.

6. As a new articley of manufacture a godet wheel of frangible material for rayon spinning machines, having an axial shaft-.end re-v ceivingpol'gonally-contoured hub-.cavity with an incorporated similarly shaped nutcapable of lateral movement, said cavity having a convergent approach, and an integrally-formed annular laterally-projecting guard flange concentrically about said approach.

in testimony whereof I have hereunto signed my name at Philadelphia, Pennsylvania, this 28th day of February, 1929.l

CHARLES W LAl/VSER.

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