US923126A - Bobbin-clutching means for rotatable spindles. - Google Patents

Description

APPLIOATIN FILED JAN.1B, 1909.

Patented. May 25, `1909. .y

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mviTED/STATES PATENT oEEioE yeEoRGE,w.KNIGHT,foF norEnALE, MASSACHUSETTS, ASSIeNoE To DRAPER COMPANY,- or -HorEnAiEMASSACHUSETTS, A cosroRATroN or MAINE.

f no. 923,126. I

kTo attachent 'it may confiera; Be it known that I, GEORGE W. KNIGHT, a

BoBBIN-,CLUTQHING MEANS FOR ROTATABLE `sPnvnLEs.

i citizen of the United States, and resident of `Hopedale, ,county of Vlforcester, State of .Massachusetts, have invented an Improvement inBobbinClutchingMeans for Rotatable Spindles, :of which the following de- ,.scription', [in connectionfwith the accompanying drawing, ris a specification, like char- I acters on the drawing representing like parts.

kThis yinvention relates to yb'cbbin-clu tching means of the rvtype whereink the clutching members are arranged ,syminetricallyey about the spinning or iotheirotatable spindle and by the action ofcentrifugal force engage and hold thev bobbin securelyiin place upon the spindleto be rotated therewith. n

In *my vpresent invention the clutching members are bodily movable outwardly from the spindle when the-latter is running at speed, and I have also made provision for a tipping or rccking movement of such members on.theirlowerends,',means being provided to effect such rocking movement positively and equally ,forallgoi the clutching members when thelbobbin is appliedtc the spindle."A 4,

The 'objectief `this con/struction and arrangement is toproperly center the bobbin action uponV the clutching members is not on the'spindle, for sometimesthe centrifugal sufficient" to",k eiiiect ythe requisite centering,

,f particularly with unbalanced loads, and at such times the operation ofthe device is not .I so elicient as it shouldbe.

In the presentl embodiment ,of my invention the lowerends of theclutching members are shaped topresent outturned feet, upon which the members rock, andi 'Find that the added weight thus yprovided at the lower ends of the,memberslisv also advantageous in y im roving thel clutching action upon the bo bin;y The feet are loosely inserted in a covered guard or container-,and by means of projections'on the ,ieet, projecting upward throughthe top ofthelcontainer, the head of the bobbinfacts to tip'or rock the clutchf ing members, movingtheir upper ends outward positivelyfand,equally to thereby eiiect the centering olithe'bobbin,y

`The various novel `features of myinvention will be fully described inthe subjoined s ecification and purticularlypointed out in v t e followingclaims. `i

Figure "lis a side elevationof a rotatable Specification of Letters Patent.

Patented May 25, 1909.

.y e Application led January 18, 1909. Serial No. 472,999.

spindle having bobbin-clutching means embodying my present invention, the lower or head end of a bobbin being shown in section in operative position on the spindle. Fig. 2 is a part elevation and vertical diametrical section on the line 2 2, Fig. l, to more clearly Show the structure. Fig. 3 is ahori zontal section on the line 3 3, Fig. 2, look-v ing down, the bobbin being omitted and the cover or top of the container being partly broken out. Fig. 4l is a similar view but with the clutching members and the cover of the guard or container removed. Fig. 5 is a perspective view of one of the clutching members, detached.

As herein shown my invention is applied to a rotatable spindle A having an attached whirl B provided with an upturned sleeve B connecting it with the spindle, the head B2 of the whirl being enlarged and provided with an upturned annular flange or wall B3, to form a cup-like container or guard for the lower ends of the clutching members, as will appear hereinafter.

As shown in Figs. 2 and 4 the bottom of the container is provided with symmetrically arranged recesses or sockets l, three beinfr shown, and preferably elongated in radiazl lines from the center of the spindle. The container is covered or inclosed by a cap or cover 2 which slips on outside the wall B3 and is held in place thereon by a pin 3, Fig. 2, the cover having a central circular opening 4 of suilicient diameter toreceive loosely, the bodies of the clutching members and permit bodily radial moveinentthereof as well as a rocking movement.

A clutching member is shown separately in Fig. 5 and comprises an elongated body 5 segmental in cross-section and longitudinally conveXed or curved at its upper end or head 6, on the interior of which is an upturned `projection 7 which is engaged by the depending flange 8 of a collar 9 fast on the spindle, as

shown in Fig. 2, the coperationof the `flange 1pc with the projections 7 of the several clutching members limiting outward movement thereof at their upper ends. Y

Three of the clutching members are herein shown arranged symmetrically around the 105 soSA clined upwardly and outwardly from its 111,0

inner edge, as at 11. As shown in Fig. 2 the clutching members are vertically supported by the inner edges of :the feet, which rest on the bottom of the container or guard, and the beveling of the feet permits the members to rock or tip on such inner edges of the feet, as will be apparent, while the members as a whole have a limited outward bodily movement with relation to the spindle. When the spindle is running free the centrifugal force throws the clutching members out ward, the movement at their heads being limited by the liange 9 and projections 7, and the lower ends of said members are limited in such movement by the edge of the circular opening 4 in the cover 2, the feet being inclosed within the container by such cover.

In order to maintain the clutching members properly separated from each other and to effect their rotation by and with the spindle I provide pins 12, driven through the feet 10, the lower ends of the pins loosely .entering the sockets 1, see Fig. 2, while their ulpper ends pass through preferably radial s ots 18 in the cover 2, and when the spindle is bare the upper ends project above the upper surface of the cover, in position to be .engaged by the head C of the bobbin C,

Figs. 1 and 2, when applied to the spindle. When the bobbin is applied it is pushed down over the clutching members and its end strikes the projecting ends of the pins 12 and presses the latter downward, rocking the clutching members equally and simultaneously and causing their heads 6 to press uniformly against the wall of the chamber CX, thereby centering the bobbin with re- The pins are preferably of such length that their upper ends will lie flush with the top of the cover 2, see Fig. 2, when the bobbin is pushed down onto said cover, which latter then serves as a bobbin rest.

By reference to Fig. 2 it will be seen th at a slight clearance is left between the bottom of the socket 1 and the lower end of the pin 12 when the-clutching members are rocked,

to prevent any hindrance to the rocking movement, and also leaving the clutching members free to move outward bodily under the iniiuence of centrifugal action.

In actual practice I find that the operation c of the device herein described is very erlicient, inasmuch as the bobbin-centering feature, which is of great value, does not interfere with the centrifugally-controlled clutching action of the loose members upon the bobbin, so that the latter is positively and accurately centered and at the same time held in proper position to rotate by and with the bobbin by centrifugal action. The container not only protects and incloses the feet of the clutching members, preventing any possibility of injury to the hands of the attendant, but it also serves as a housing to loosely receive the feet, and prevents the .entrance of lint or lluff.

Having fully described my invention, what l claim as new and `desire to secure by Letters Patent is 1 The combination, with a rotatable spindle, vof a plurality of .centrifugally-acting bobbin-clutching members mounted upon it and bodily rotatable therewith, each member having at its lower end an outturned foot upon which the member is adapted to rock, an inclosing container in which the feet are sup orted and adapted to rock and move radiailJ means coperating with the clutching members near their upper ends to limit outward movement thereof, and means to rock said members upon their feet and force their upper ends outward when a bobbin is applied to the spindle, to center the bobbin thereupon.

2. The combination, with a rotatable spindle, of a plurality of centrifugally-acting bobbin-clutching members mounted upon it and bodily rotatable therewith, each member being adapted to rock upon its lower end, means cooperating with the inner portions of said members at their upper ends to limit outward movement thereof, an in closed support for the lower ends of the clutching members, and me-ans to rock said members positively and force their upper ends outward by the application of a bobbin to the spindle.

3. The combination, with a rotatable spindle, of a plurality of centrifugally-acting bobbin-clutching members mounted thereon and adapted to rock upon their lower ends and also to move bodily in radial directions, and upturned means on the lower ends of said members to engage the end of the bobbin when applied to the spindle and effect thereby rocking movement of the clutching members, to cause the same to act equally and uniformly u on the bobbin and center it with relation to t ie spindle.

4. The combination, with a rotatable spindle, of a plurality of centrifugally-acting bobbin-clutching members mounted thereon and bodily movable in radial directions, each member having an outturned foot outwardly and upwardly beveled on its under face, an inclosi'ng container or guard in which the feet are movable radially and also can rock, and upturned projections on the feet adapted to be engaged and depressed by the bobbin when ap lied to the spindle, to therebyrock the clutc ring members and press theirupper ends outward to internally engage and center the bobbin.

5. The combination, with a rotatable spindle, of a plurality of centrifugall f-acting bobbin-clutching members mounte thereon and bod-ily movable in radial directions, each member having an outturned foot upon the inner edge of which the member rocks, a con- 13o f tainer loosely inclosing the feet and having radial sockets in its bottom and correspond- `ringo eninfrs in its to and ins on the feet if projecting into the sockets to separate the clutching members and passing up through the openings in the top oi" the container, to

be engaged by the end of' a bobbin when ap- 6.' The combinationwith a rotatable spindie, of a plurality ofcentrifugally-aoting bobbin-clutching members mounted thereon and each having an outturned foot on its lower y* end, a cup-like container loosely inclosing the feet and fixedly mounted on the spindle, depending projections on the feet to enter sockets formed in the bottom of the container, to separate the clutching` members, and means cooperating with the innerfaces of said members near their upper ends to limit outward movement thereof.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

GEORGE W. KNIGHT.

Witnesses:

JOHN A. CAFFEY, E. D. OsGooD.

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