US1901538A - Bobbin and bobbin clutching spindle - Google Patents

Description

March 14, 1933; w. l. STIMPSON 1,901,538

BOBBIN A ND BOBBIN CLUTCHING SPINDLE Filed Feb. 23, 1932 W/T/VEJS. INVENTOR.

C 4 //v7'o/v 6. Cosue/v. MLLA cE I ST/MPSON.

ATTORNEY.

amend Mar. 4, 193:

T UNITED STATES PATENT orrlca wmacn I. s'rmaon, or nomna, xas'aacausar'rs, asarcxoa no human. coarona'nor, or non-mu, nssacmrsms, a conroaa'rrox or ma mum AND 3033]] OLUTCHING SPIHDLE- Application filed February es, mi. lerial No. 594,848.

This invention relates to that type of spinning apparatus in which a rotatable spindle having a plurality of centrifugall -act1ng clutch segments is employed. In t is type a of apparatus the rotation of the bobbin with the spindle is secured by the radial pressure of the clutch segments against the wall of ,the bore in the butt of the bobbin. As commonly constructed, there is nothing to prevent the bobbin from risin vertically on the spindle except the friction tween the clutch segments and the said wall. It frequently happens that the top of the bobbin becomes worn enough to be slightly loose on the spindle, or the bobbin becomes unbalanced dynamically. In either event, the stresses set up at the extremely high speeds at which the bobbins and spindles are rotated are sufficient to cause the to of the spindle to be pulled out of line an to rotate bodily in a more or less circular ath. When this ha pens, uite an appreciable component of 't e centri gal force set up tends to lift the bobbin vertically ofi the spindle, and the aforementioned friction is insuflicient to keep the bobbin down in place. Of course, if ,the.

bobbin rises, even slightly, during the spinning operation a uniform traverse is not produced, and the particular package of yarn is rendered defective. Accordingly, the object of the present invention is to provide a construction in'which the bobbin will be firmly held against rising on the spindle.

In my prior Patent 758,715, granted May 3, 1904, I disclosed a construction intended to prevent bobbins from rising on the spindles, by merely making the bore in the butt of the o bobbin tapered. However, such" construction was not satisfactory and it has. never been used, partly because the tapered bore cannot be satisfactorily produced commercially and partly because the bare wood was I 48 rapidly mutilated by the metal clutch segments. Also a metal bushing to withstand the stresses set up by the steel rings cannot be satisfactorily inserted in the tapered bore.

1 accomplish the desired result in the present instance by a'construction hereinafter do the axis of the spindle. When the s indle blade.

in the bore 10- is positioned a metal bushing scribed, and shown on the accompanying drawing, in which:

Fig. 1 is an elevation of a centrifugal clutch s indle with a bobbin placed thereon, the bob in being cross-sectioned -to more clearly show my invention; I

Fig. 2 is an enlarged sectional elevation of the butt of the bobbin shown in Fig. 1;

\ Fig. 3 is a view similar to Fig. 1 but showingi a different form of my invention, and

1g. 4 is an enlarged sectional elevation of the butt of thebobbin shown in Fig. 3. I

The spindle illustrated comprises the usual blade 1 with the whirl 2 ri 'dly secured thereon, and a centrifugal bo bin clutch 3 which includes a slotted sleeve 4 providing guides for pivotally mounted clutch se ments 5 the upper, or exposed, ends of whic mchne upwardly and outwardly away from is rotated the iipper ends of the clutc segments tend to y out away from the blade and this centrifugal action is utilized to drive the bpbbin.

Th s spindle may be, as herein shown, idenheel with that disclosed in my rior Patent No. 1,796,770, granted March 1 1931, and, accordm ly, need not be further illustrated or descri d. I

The bobbin illustrated in Figs. 1 and 2 includesa barrel portion 6 and a butt portion 7, the barrel portion being bored lon-- 'tudinally as at 8 and provided with a metal ushing 9 for cooperation with the spindle The butt 7 of the bobbin is provided with an enlarged bore 10 the lower portion of which houses the centrifugal clutch. With- 11 which, as shown, extends from a int well below the gripping portions of e clutch segments to a point thereabove, the bushing thereby serving the dual purpose of protecting the wood of the bobbin from the mutilating action of the clutch segments and reinforcingthe bobbin against the stresses imparted by the steel rings 12 which fit very tightly on the butt of the bobbin. The bushing is rigidly secured in the bore 10 m any suita lble' manner, as by being spurred to the woo Y I a The bushing 11 is slightly larger in cliameter, inside, than those usually employed for cooperation with a given size of obbin clutch, and is provided, approximately midway of its ends, with, an inwardly. project- I ing, circumferential ledge. The inner edge of this ledge-is of slightly less diameter than the internal diameter of the bushings used heretofore, and bears against the clutch segments well below their tops. The exact manner of procuring this ledge is not of primary importance, although I have shown two methods which I believe to be the best.

'In Figs. 1 and 2 the ledge 13 is constituted f by the upper edge of an inwardly project ing annular flange formed in the bushing 11 before it is inserted in the bore 10.

In Figs. 3 and 4, the barrel 6, butt 7 bore 8, bushing9, bore 10 and rings 12' are identical with the corresponding parts in Figs. 1 and 2. The bushing 11 is likewise identical with bushing 11 except that in bushing 11 ledge 13 is constituted by the upper edge of a shorter bushing 14 inserted within and fixed to the bushing 11' in any suitable manner as by being spurred thereto. The bushing 14 is approximately half the length of the bushing 11 and ledge 13' is,

; accordingly, positioned approximately midwayof the ends of the longer bushing and well below the tops of the clutch segments.

The diameter of the inner edgeof ledge 13, 13 is such that it'will bear firmly against the clutch segments when the bobbin is down .on the spindle, and the inclined faces of the clutch segments will, when the spindle is be attained in other ways without depart ing from the spirit of the invention as defined in the appended claims, it being particularly noted that while I have shown the ledge as being continuous I do not wish to limit myself to such a construction.

Having fully disclosed the two preferred embodiments of my invention I claim:

1. The combination of a rotatable spindle having a plurality of clutchse ents which incline outwardly and upward yaway from the axis of the spindle, with a bobbin having a metal bushing in a bore in the butt thereengaging the inclined clutch se of, serving to house the clutch segments, said bushing being provided with an inwardly projecting locking ledge, of less diameter than the remainder of the bushing, the ledge enga ing the: inclined clutch segments below t e tops thereof and locking the bobbin against rising on the spindle.

2. The combination of a rotatable spindle having a plurality of clutch segments which incline outwardly and upwardly awa from the axis of the spindle, with a bobbin avin a metal bushing in a bore in the butt thereo serving to house the clutch segments, said bushing being provided intermediate its ends, with a continuous, inwardly projecting, looking ledge of less diameter than the remainder of the bushing, the ledge engaging the in-' clined clutch segments below the tops thereof and locking the bobbin against rismg on the spindle.

3. The combination of a rotatable spindle having a plurality of clutch segments which incline outwardly and upwardly away from the axis of the spindle, with a bobbin avin a metal bushing in a bore in the butt thereo serving to house the clutch segments, said bushing being provided, intermediate its ends, with an inwardly proJecting annular flange, of less diameter than the remainder of the bushing, the upper edge of the flange the tops thereof and constitutmg a locking member for locking the bobbin against I'IS- ing on the spindle.

4. The combination of a rotatable spmdle having a plurality of clutch segments which incline outwardly and upwardly away from the axis of the spindle, with a bobbin havin a metal bushing in a bore in the butt thereo said bushing extending from a po nt below the clutch segments to a point thereabove, and a shorter metal bushing positioned withents below in and secured to the first said bushing, tlie top edge of the shorter bushing constituting a circumferential locking1 ledge engaging the inclined clutch segments elow the tops thereof and locking the bobbin from 11S1l1g on the spindle. k

5. The combination of a rotatable s indle having a plurality of clutch segments t e exposed portions of which incllne outwardly and upwardly away from the axis of the spindle, with a bobbin having a cylindrical metal bushing secured in a bore in the butt thereof, the top edge of said bushing being continuous and also being smaller in diameter than the diameter of a circle defined by the tops of the exposed portions of the clutch segments, the said top edge of the bushin engaging beneath the outwardly incline clutch segments and locking the bobbin down on the spindle.

6. A bobbin for use with rotatablefs indles having locking members, saidib'obbin' aving' a cylindrical bore in the buttthereof, andametaLbusbjnasecured in the said bore, the said bushing ing substantially cylindrical and provided, intermediate its ends, with an inwardly pro ectin annula'r'flange the 01:;- 6 per eddge of which ange constitutes a l mg 1e ge for(en%ain%the locking members ofthialspindle to o d t e bobbin down on the spm e.

7. A bobbin for use with rotatable indies '10 having locking members, said bobbin aving 'a bore in the butt thereof, a metal bushin secured in the said bore, and a shorter meta bushin itioned within and secured to the. first sai bushing, the shorter bus fsrminating a substantial distance below t 0 top of the. first bushing, and the top edge of the said shorter bushing constituting a lockin ledge for engaging the locking members 0 the indle to 01 the bobbin down on the spin e.

. WALI-LACE' I. STIMPSON.

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