US1519663A - Cap-spinning frame - Google Patents

Description

BURGESS CAP SPINNING FRAME filed Dec. 26, 1922 2 Sheets-Sheet 1 Dec. 16, l 924.

R. BURGESS CAP SPINNING FRAME 2 Sheets-Sheet 2 9 a M m H, .7 m m v mm M? a N7 Patented Bee, 1%, 1924.

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ROBERT BURGESS, OF NEXVTON CENTER, MASSACHUSETTS, ASSIGNOR OF ONE-HALF T0 JOSEPH I-I. JONES, 0F YVINTHROP, MASSACHUSETTS.

CAP-SPINNING FRAME.

Application filed December 26, 1922. Serial No. 608,809.

To all whom it may concern:

Be it known that 1, ROBERT BURGESS, a citizen of the United States, residing at Newton Center, in the county of Middlesex, State of assachusetts, have invented a certain new and useful Improvement in Gap- Spinning Frames, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention comprises improvements in cap-spinning devices of the revolvingor live-cap class on the order of those which are shown, etc., in U. S. Letters Patent No. 1,020,179, granted March 12, 1912, for improvement in devices for spinning and twisting yarn; No. 1,230,097, granted June 19. 191?, for improvement in devices for spinning and twisting textile fibers; No. 1,285,598, granted Nov. 26, 1918, for improvement in devices for spinning and twisting textile iiber; lo. 1,294,371, granted Feb. 18, 1919, for improvement in capspinning devices; No. 1,385,078, granted July 19, 1921., for improvement in cap-spinning frames; No. 1,401,705, granted Dec. 27, 1921, for improvement in cap-spinning frames; No. 1,416,356, granted May 16, 1922, for improvement in cap-spinning frames; No. 1,43%,003, granted Oct. 31, 1922, for improvement in cap-spinning devices and 1345,2511, granted Feb. 13, 1923, for improvement in cap-spinning frames.

Organized spinning devices on the order of those of the patents referred to comprise a cap mounted upon the blade or barrel of a revolving spinning clement (spindle or bobbin), revolved thereby and novable longitudinally thereof, and one or more socallcd p vots or pivot-wheels co-acting with the cap.

In the devices of the patents aforesaid the cap is mounted upon the spinning element through its upper end or head end being furnished with an internal hearing which has a close or easy sliding tit upon the blade or barrel of the spinning element. The easy sliding it permits the cap to gravitate downward upon the said blade or barrel until it is supported by the pivot wheel or p'vot-wheels. It also permits the traverse movements of the cap up and down upon the blade or barrel which are required to take place for the distribution of the spun yarn upon the blade or barrel in being wound thereon. The pivot-wheel or pivotwheels cooperating with a cap are revolubly mounted on a support or supports carried by a rail to which in practice vertical traversing movements are given. In the operation of the spinning devices the yarn being spun passes down alongside a cap and around the edge or lip of the bottom of the cap to the spinning element, upon which latter it is wound. As the rail goes up, the cap is raised by the pivotwheel or pivotwheels upward along the blade or barrel of the spinning element. As the rail goes down, the cap gravitates downward upon the said blade or barrel, following the pivotwheel or pivot-wheeis downward.

In the case of the live-cap spinning devices of the earlier of the patents aforesaid, the cap is positively revolved in unison with the revolving spinning element, at the same speed as the latter, through the cap being in sliding clutch engagement with the blade or barrel of the-spinning element by means of a splined clutch connection, usually a key and groove. The pivot-whcel or pivotwheels is or are wheels or diskswvith which the cap makes contact vertically. In the case of later instances, the splined key and groove clutch for causing the cap to be positively rotated being retained, the pivotwheel or pivot-wheels, in addition to being adapted to supportthe cap vertically, is or are formed and arranged to operate, through contact with the cap peripherally, to prevent the cap from becoming locked to the blade or barrel of the spinning element, in a'manner which would interfere with free vertical movement of the cap up and down upon the said blade or barrel in conformity with the up and down movements of the traverse. In use it was found in all these instances that vibration of the spindle and other causes interfered with reliability of action of the cap; and by reason of the cap being revolved at the same rate of speed as the spinning element the cap had no effect in producing retardation of the circling movement of the yarn in being spun, so as to promote the winding of the yarn upon the spinning element, so that various expedients were en'iployed to retard the yarn in its revolution with the spinning cien'xent to cause it to Wind upon the latter. In the case of still later instances the splined orkey-andgroove clutch has been omitted, and for the purpose of ensuring rotation of the cap the pivot-wheel or pivot-wheels cooperating with the latter has or have been arranged, etc., to cant or tilt the cap slightly relative to the blade or barrel. of the spinning element, so as to cause the bearing in the cap head to cramp or bind a little upon said blade or barrel. In the case of a frictionally driven cap this cramping or binding serves to cause the cap to start promptly into rotation in starting up the spinning frame after a stoppage of the frame, or in starting up the individual spinning element after piecing up a broken end of yarn. The canting or tilting has been occasioned through engagement of the periphery of an external lateral bearing member constituted by a pivot-wheel with the outer side of the periphery of the cap near the lower edge of the cap.. Thereby the cap has been given a slight tilt away from the lateral bearing member, such tilt operating to bring the lower portion of the central bearing of the cap-head into close contact with that side of the spinning element which isadjacent said lateral bearing member, and also operating to cause the spinning element to be frictionally gripped between upper and lower portions of said central bearing. I-Iowever, canting or tipping of a cap, and resultant cramping or binding of the same upon. a spinning element, have the drawback that they clutch or lock the cap to the spinning element in such manner as to prevent the free relative axial movement that is necessary for the distribution of the yarn up and down upon the spinning element, i. e., as the traverse occurs. Such canting or tipping also results in the cap being caused to rotate upon an axis that is slightly inclined with respect to that on which the spinning element rotates, so that the cap rotates out of true concentricity with the blade or barrel ,of the spinning element. More or less irregularity of action, vibration and chattering, and more or less aecidental up and down movement of the cap relative to the spinning element are observed, all of which it is important and advisable to eliminate. Another drawback of the cramping or binding incident to the canting or tipping of thecap relative to the spinning element is the tendency to cause the cap to revolve at the same speed with the spinning element. This tendency prevents the retardation of the cap which is necessary in order to cause it to revolve more slowly than the spinning element so as to secure satisfactory Winding. It is important that the cap should revolve more slowlythan the spinning element in order that the yarn passing around its lov er edge to the spinning element'may be caused to Wind upon the latter.

The leading general object of the inven-- tion is to provide live cap devices which will operate satisfactorily without canting o'r tipping of the cap relative't'o' the axis of the spinning element, and consequently without cramping or binding of the cap upon the spinning element, while securing in operation proper and satisfactory performance of the iinportant functions of socalled pivots or pivot-wheels, namely neutralizing the tendency of the cap and spinning element to become locked together by centrifugal action so as to prevent one thereof from moving axially with respect to the other; (2) effecting in the ease of caps which are driven by frictional engagement a sutlicient retardation of the speed of rotation of a cap to cause the winding of the yarn, as it is spun, upon the spinning eleiient; and (8) governing the position of the cap vertically during the traverse movenients by which the yarn that is in process of being spun and wound upon the bobbin is distributed along the said'blade or barre The invention eliminates the tendency aforesaid to canting or; tippii'ig of the cap relative to the axis of the spinning element with which it is' associated in operation through so relating the pivot or pivot-wheel with respect to the internal bearing of the cap that the pivot or pivot-wheeltouches the exterior of the cap in a line extending radially of the cap through the said inteii'ial bearing, so that such lateral pressure as may take effect upon the exterior of the cap shall act directly through the said bearing portion without deflecting or tilting the axis of the cap with relation to the axis of the spinning element. Thereby the invention eliminates the cause of cantinlg cap and resulting drawbacks, thus eliminating clutching such as tends to prevent axial movement of the cap; also securing regularity of action, reducing vibration, and diminishing chattering and the. accidental upand-down dancing motion of the cap hereto fore observable. The invention furthermore alleviates the similar irregularities, e tc., attributable to want of concentricity of the spinning element and the cap with the axis of rotation.

As will be apparent to those skilled in the art, and familiar with spinning frames and spinning conditions, the results which are attained in practice by means of my invention are conducive tobet'ter spinning conditions and longer life. of the spindle or other spinning element.

The invention includes clutching means adapted to cause a cap to rotate in unison with its spinning element at those times when this action is desirable or necessary, as for instance on first starting-up a spinningor tilting of the frame after a stoppage, or following stoppage of the spinning element for any purpose whatever, as for piecing-up, and further adapted to thereafter cease to act and leave the cap to be driven through frictional engagement of the spinning element therewith. It further includes the combination with a live cap of a clutch of special construction.

In the drawings,

Fig. l is a view in side elevation of certain parts of a cap-spinning frame, with various rails in cross-section, illustrating one embodiment of the invention, and the connection in which the invention is applied and used in practice.

Fig. 2 is a partly sectional view, on an enlarged scale, of certain of the elements that are shown in Fig. 1.

Fig. 3 is a. side elevation of the bearing and clutch of Fig. 2, detached.

Fig. 4 is a view in horizontal section in the plane indicated by line 4, 4, in Fig. 3.

Fig. 5 is a plan view of the said bearing and clutch.

Fig. 6 is a view thereof in vertical section in the plane indicated by line 6, 6, of Fig.

Figs. 7, 8, 9, 10', 11, and 12 are views showing modifications, Figs. 7 and 8 being.

partly sectional.

Figs. 13 and 14 are diagrams illustrating different combinations of caps and pivots or pivotwheels.

teferring first to Fig. 1 of the drawings,

Old and well-known parts shown thereincomprise a thread-board 1 having hinged thereto at 2, in usual manner, a block 3 carrying the guide 4 for the yarn :0 between the front rolls (not shown) and the devices by which the yarn is twisted. Also, a spindle-rail 5, a spindle-bearing support 6 mounted thereon, and a spinning-spindle 7 of sleeve-whirl type mounted in said bean ing-support and provided with abandwhirl 7 around which passes a spindle driving band 8 by means of which the spindle is rotated; and a quill or bobbin 9 mounted upon the said spindle. The. drawings show, further, a cap 10 mounted upon the upper portion of the said quill or bobbin and, as explained hereinafter, frictionally driven thereby so as to revolve in unison therewith, and a cap-controlling pivot, pivot-wheel, or whirl 12 in rolling peripheral contact with the cap. At 13 is a. rail, which is substantially like the ring-rail of a ring-spinning frame, and which carries the support 14 of the pivot, pivot-wheel, or whirl 1.2.

In F ig. 1, etc, the cap is cone-shaped and flares upwardly as in Letters Patent No. 1,-

385,078 and No. 1,401,705, it being of the specific form shown, described and claimed in the latter patent, and the upper portion. of the cap overhangs and touches the peripheral portion of the pivot, pivot-wheel, or whirl 12, whereby the cap is supported vertically by means of the periphery of the pivot, pivot-wheel, or whirl.

Preferably, and as shown in Fig. 2, the

head of the cap 10 is provided with a bush-' ing 101, the interior bore of which is proportioned to fit loosely upon the blade or barrel of the spinning element, which last in this instance is the quill or bobbin 9. The said fit is sufficiently loose to permit the cap to slide up or down upon the said blade or barrel, and also to permit slightrocking or tilting of the cap relative to the axis of the spinning element to occur without resulting cramping or clutching of the cap to the blade or barrel of said element. The fit of the in ternal cap-bearing, while sufficiently close to enable the cap to be rotated by means of the frictional engagement between the contacting surfaces of the blade or barrel and bushing, nevertheless is such as to permit the cap to gravitate downward upon the spinning element in question until the cap is supported through its flaring periphery resting upon the cap-contacting peripheral portion of the pivot, pivot-wheel, or whirl 12, and also to permit the traverse movements of the cap relative to the said blade or barrel which are required to take place for the distribution of the twisted yarn upon such blade or barrel in being wound thereon. These traversing movements are due in practice to vertical movements of rail 13 relative to rail 5, or vice versa.

Figs. 1 and 2 show the cap-engaging peripheral portion of the pivot, pivot-wheel, or whirl 12 located as aforesaid, in accordance with one part of the invention, at such a height relative to the internal bearing of the cap upon the spindle or blade of the bobbin 9 that, as stated previously herein, the pivot, pivot-wheel, or whirl touches the periphery of the cap in a line extending radially of the cap through the said internal bearing. which has been mentioned; namely, such lateral pressure as may take effect upon the exterior of the cap acts directly through the bearing portion without deflecting or tilting the axis of the cap with relation to the axis of the spinning element. This same relationship exists in the case of each of the modifications illustrated in Figs. 7, 8, 9, 10, and 11.

The improved clutching means constituting one portion of the invention is illustrated in Figs. 2, 3, 4, 5 and 6 of the drawings.

Such clutching means embodies, as in Letters Patent No. 1,445,291, granted Feb. 13, 1923, for improvement in cap-spinning frames, upon my application filed March 14, 1922, Serial No. 543,586, the principle of employing a plurality of clutch-elements, preferably balls, arranged in a circular series, lightly held pressed inward for fric- Thereby is attained the resulttional contact with the periphery of the blade or barrel of the spinning element, and adapted to move outward under the action of centrifugal force. Clutch-elements such as referred to are represented at 15, 15, Figs. 2 to 6. In accordance-with the present invention, I employ two circular series of the said clutoh-elei'nents, one above the other, as shown clearly in Figs. 2 and 6, and preferably so-disposed that one of the said series shall be located above the point of contact between the exteriorof the cap and a pivot, pivot-wheel, or whirl, and the other series shall be located below such point. The two circular series of clutch-elements, one above the other, tend through their contact with the exterior of the blade or barrel of the spinning element to maintain the axis of the cap in substantial parallelism with the axis of the spinning element, and substantially coincident therewith. Thereby greater steadinessof the cap in rotation, and other advantages, are attained, and the tendency of the cap to become cramped upon the said blade or barrel, so as to interfere with the required differential rate of rotation, and with free vertical movement of the cap upon such blade or barrel, are obviated,

Herein I have represented each series of the clutch-elements, shown as balls as in Letters Patent No. 1,445,291 aforesaid, and as preferred, held in place in connection with bushing 10 by being contained in sockets in said bushing, and gently pressed inward by means of a light spring strip 16 in the shape of a split annulus which encircles the series of clutch-members and contacts with the outer portions thereof. For the accommodation of the spring 16, the bushing is externally grooved at 17, 17. The construction adopted by preference in practice is illustrated in Figs.,2 to 6, and in the case thereof the bushing, two series of clutch-members, and springs, constitute aclutch-unit. The connection of the said clutcl1unit with the body of the cap may be established by molding the body around the bushing, when such body is made of'plastic material, such for instance as balrelite, and produced by molding. Or, as'shown, the bushing may be externally screw-threaded, and the central opening in the head of the capn'iay'be correspondingly threaded internally, and the clutch-unit may be screwed into place.

As in Letters Patent No. 1,445,291, nor mally the clutclrelements are gently pressed inward so as to engage lightly with the surface of the blade or barrel of the spinning element, to aid by clutclraction'to cause the cap to begin to revolve simultaneously with the spinning element when the spinning frame is started up from a state of rest, as after "a stoppage, or when the'particular spinning element starts to rotate after a broken end of yarn has been pieced up; and

they are permitted to displace outward by centrifugal action so as to reduce the clutch ing action after the cap has attained a predetermined speed of rotation, and leave the cap free to be driven through frictional engagement with the blade or barrel of the spinning element, and to revolve at a differential rate relative to such element.

The clutch-elements of the present invention have all the advantages that are set forth in Letters Patent No. 1,445,291.

Preferably the clutch elements of the upper series alternate in circular succession with those of the lower series, as shown in Figs. 5 and 6.

The first feature of the present invention, namely that of peripheral contact of the exterior of the cap with the periphery of a a pivot, pivot-wheel, or whirl 12 in .a line extending radially of the cap through the internal bearing for the blade or barrel of the spinning element, is shown in Fig. 7 associated with a clutch-device having a single circular series of radially-movable clutch-elements. It is shown in Fig. 8 associated with a cap having a simple sleeve-bearing 102. It may be associated with a cap 103, Fig. 9, and pivot, pivot-wheel, or whirl 121 in the case of which .the cap is furnished at its head or top with a projecting rim 104 making contact with the downwardly flaring, conical, pivot, pivot-wheel, or whirl. In such case the contact will be, as in the other instances, in a line extending radially of. the cap through the internal bearing. Fig. 10 shows a cap 105 having arranged to cooperate with its upwardly flaring portion 106, a pivot, pivot-wheel, or whirl 122 revolving on an inclined axis. Fig. 11 shows a cap 107 having arranged to cooperate with its upwardly flaring portion 108 a pivot, pivot-wheel, or whirl 1123 revolving on a horizontal axis.

Fig. 12 shows an embodiment of the first feature of the invention in which a cap, 109,

has arranged to cooperate with its flaring head portion a series of pivots constituted by a circular series of balls, 124, 124, mounted in an annular holder 125 which in practice is supported in convenient manner upon the rail 13. While in the case of all the illustrated forms of embodiment of the first feature of the invention the pivots, pivot-wheels'or whirls operate to restrain'ballooning of theyarn in process of being spun, the annular arrangement of 12 is the most effective in such respect.

In some cases I contemplate employing two wheel-like pivots, pivot-wheels, or

whirls 1.2, 12, in conjunction with a cap, as in Fig. 13, both of the same arranged to engage with the cap in conformity with the first feature of the invention. In other cases I may employ three thereof, arranged as in Fig. 14.

f1 3ilitates the movement of a cap vertically upon its spinning element as the traverse rail rises and falls, and it obviates injury, as for instance to the spinning element, cap, or pivot, as well as avoids interference with the ascending movement of the pivot-supporting rail, in case a spindle-band breaks and the spinning element ceases to rotate, in which case the centrifugal action of the clutch-members terminates and the clutchdevices might cling tightly to the spinning element and tend to prevent the cap from moving vertically relative to the latter if the rolling contact did not provide for such relative movement.

lVhat is claimed as the invention is:

1. In capspinning devices, the combination with a spinning element, and a live cap actuated by the said element, having an in ternal bearing surrounding the blade or barrel of such element, of a pivot cooperating radially with the exterior of the cap in a line extending radially of the cap through the said internal bearing.

2. In cap-spinning devices, the combination with a spinning element, and a live cap actuated by the said element, having an internal bearing surrounding the blade or barrel of such element, of a revoluble pivot cooperating radially with the exterior of the cap in a line extending radially of the cap through the said internal bearing.

3. In cap-spinning devices, the combination with a spinning element, and a live cap actuated by the said element, having an internal bearing surrounding the blade or barrel of such element, and having also a vertically flaring periphery, of a pivot cooperating with the said flaring periphery in a line extending radially of the cap through the said internal bearing.

4. In cap-spinning devices, the combination with a spinning element, and a live cap actuated by the said element, having an internal bearing surrounding the blade or barrel of such element. and having also a vertically flaring periphery, of a revolulole pivot cooperating with the said flaring periphery in a line extending radially of the cap through the said internal bearing.

5. In cap-spinning devices, the combination with a spinning element, and a live cap having a vertically flaring periphery and an internal bearing loosely fitting the blade or barrel of the spinning element,

said cap rotated in unison with the spinning element through frictional engagement, ofa pivot cooperating with the said flaring periphery in a line extending radially of the cap through the said internal bearing.

6. In cap-spinning devices, the combination with a spinning element, and a live cap having a vertically flaring periphery and an internal bearing loosely fitting the blade or barrel of the spinning element, said cap rotated in unison with the spinning element through frictional engagement, of a revoluble pivot cooperating with the said flaring periphery in a line extending radially of the cap through the said internal bearin 7. In cap-spinning mechan'sm, the combination with a revoluble spinning element and a live cap mounted upon the blade orbarrel of such element, of an upper and a lower circular series of clutch-elements, each circular series comprising a plurality of said clutch-elements which normally make light frictional contact with the said blade or barrel and are permitted to move outward under the action of centrifugal force.

8. In cap-spinning mechanism, the combination with a revoluble spinning element, and a live cap mounted upon the blade or barrel of such element, of an upper and a lower circular series of revoluble clutch-elements which normally make light frictional contact with the said blade or barrel and are permitted to move outward under the action of centrifugal force.

9. In cap-spinning meehanisnnthe com-- bination with a revoluble spinning element, and a live cap mounted upon the blade or barrel of such element, of a friction clutch carried by said cap comprising an upper and a lower series of balls which normally make light frictional contact with said blade or barrel and move outward from the axis of the blade or barrel under the action of centrifugal force.

10. In cap-spinning mechanism, the com,- bination with a revoluble spinning element, and a live cap mounted upon the blade or barrel of such element, of a clutch-unit, carried by the said cap comprising a bushing, an upper and a lower seres of clutch-mem bers radially movable under the influence of: centrifugal force, and a spring'encircling each series and lightly pressing the clutch-- members thereof inward.

11. In cap-spinning mechanism, the 00111 bination with a revoluble spinning element, and a live cap having a central opening with an easy sliding fit upon the blade or barrel of such element, of an upper and a lower series of clutch-elements in connection with such opening, each series concentric w'th the opening, lightly pressed inward for contact with the periphery of said blade or barrel, and adapted to move outward under the action of centrifugal force.

' 12. In cap-spinning mechanism, the combination with .a revoluble spinning element, and a live cap having a central openingwith aneasy sliding fit upon the blade or barrel of such element, of an upper and a lower series, of revoluble clutch-elements concentrio with said central opening, lightly pressed inward for contact with the periphery of said blade or barrel, and adapted to move outward under the action of centrifugal force.

13. In cap-spinning"mechanism, the combination with a revoluble spinning element, and a live cap having a central opening with an easy sliding fit upon the blade or barrel of such element, of a friction clutch carried by said cap comprising an upper and a lower series of balls lightly pressed inward into contact with said blade or barrel and moving outward from the axis of the blade or barrel under the action of centrifugal force.

1 1. In cap-spinning mechanism, the combination with a revoluble spinning element, and a live cap having a central opening with aneasy sliding fit upon the blade or barrel of such element, of a clutch-unit, carried by the said cap comprising a bushing, an upper and a lower circular series of clutch-members radially movable under the influence of centrifugal force, each series having a spring encircling and lightly pressing the clutch-members inward.

15. In cap-spinning mechanism, the combination with a revoluble spinn ng element and a livecap mounted upon the bladeor barrel of such element, of an upper and a lower circular series of clutch-elements, each circular series comprising a plurality of said clutch-elements which normally make light frictional contact with the said blade or barrel and are actuated by centrifugal force to reduce the driving action thereof.

16. In cap-spinning mechanism, the combination with a revoluble spinning element, and a live cap mounted upon the blade or'barrel'of such element, :of an upper and a lower circular series of revoluble clutch-elen'ients which normally make light frictional contact with the said blade or barrel and are actuated by centrifugal force to reduce the driving action thereof. 1

17. In cap-spinning mechanism, the combination with a revoluble spinning element, and alive cap mounted upon the blade or barrel of such element, of a friction clutch carried by said cap comprising an upper and a lower series of balls which normally make light frictional contact with said blade or barrel and are actuated by centrifugal force to reduce the driving action thereof.

18. In cap-sp nning mechanism, the combination with a revoluble spinning element,

and a live cap havinga central opening with an easy sliding fit upon the blade or barrel ,eea

of such element, of an upper and a lower scries of clutch-elements in connection with such opening, each series concentric with the opening, lightly pressed inward for contact with the periphery of said blade or barrel, and actuated by centrifugal force to reduce the driving action thereof.

19. In cap-spinning mechanism, the combination with a revoluble spinning element, and a livecap having a central opening with an easy sliding fit upon the blade or barrel of such element, of an upper and a lower series of revoluble clutclrelements concentric with said central opening, lightly pressed inward for contact with the periphery of said blade or barrel, and actuated by centrifugal force to reduce the driving action thereof.

20. In cap-spinning mechanism, the combination with av revoluble spinning element, and a live cap having a central opening with an easy sliding fit upon. the blade or barrel of such element, of a friction clutch carried by said cap comprising an upper and a lower series of balls lightly pressed inward into contact with said blade or barrel and actuated outward from the axis of the blade or barrel by centrifugal force to dim nish the driving action.

21. In cap-spinningmechanism, the combination with a revoluble spinning element, of a live cap mounted upon the blade or barrel of such element, said cap having an upper and a lower circular series of clutchelements, each series comprising a plurality of said clutch-elements which normally make light frictional contact with the said blade or barrel, and a revoluble pivot cooperating radially with the exterior of the cap in a line extending radially of the cap intermediate the two circular series of clutch-elements.

22. In cap-spinning mechanism, the combination with a revoluble spinning element,

of a live cap mounted upon the blade or barrel of such element, said cap having an upper and a lower circular series of clutchelements, each series comprising a plurality of said clutch-elements which normally make light frictional contact with the said blade or barrel and are permitted to move outward under the action of centrifugal force, and a revoluble pivot cooperating radially with the exterior of the cap in a line extending radiallyof the cap intermediate the two circular series of clutch-elements.

23. In cap-spinning mechanism, the combination'with a revoluble spinning element, of a live cap mounted upon the blade or barrel of such element, said cap having an upper and a-lower circular series of revoluble clutch-elements which normally make light frictional contact with said blade or barrel, and a revoluble pivot cooperating radially with the exterior of the cap in a line extending radially of the cap intermediate the two circular series of clutch-elements.

24. In cap-spinning mechanism, the combination with a revoluble spinning element, of a live cap mounted upon the blade or bar rel of such element, said cap having an upper and a lower circular series of revoluble clutch-elements which normally make light frictional contact with said blade or barrel, and are permitted to move outward under the action of centrifugal force, and a revoluble pivot cooperating radially with the exterior of the cap in a line extending radially of the cap intermediate the two circular series of clutch-elements.

25. In cap-spinning mechanism, the coinbination with a sp nning element, of a live cap mounted upon the blade or barrel of such element, said cap having a vertically flaring periphery and an upper and lower circular series of? cluteli-cleu'ients, each series comprising a plurality of said clutch elements which normally make light trictional contact with the said blade or barrel, and a revoluble pivot cooperating with the flare of said periphery intermediate the upper and lower series of clutch-elements.

In cap-spinning mechanism, the combination with a spinning element, of a live cap mounted upon the blade or barrel of such element, said cap having a vertically flaring periphery and an upper and lower circular series of clutch-elements, each se-' ries comprising a plurality of said clutchelements which normally make light trictional contact with the said blade or barrel, and are permitted to move outward under the action of centrifugal force, and a revoluble pivot cooperating with the flare of said periphery intermediate the uppe' and lower series of clutch-elements.

27. In cap-spinning mechanism, the combination with a revoluble spinn'ng element, of a live cap mounted upon the blade or barrel of such element, said cap having an internal bearing surrounding the blade or barrel of such element and having also in conjunction with the said internal bearing an upper and lower series of clutch-elements. each series comprising a plurality of said clutch-elements which normally make light frictional contact with the said blade or barrel, and a pivot cooperating radially with the exterior of the cap in a line extending radially or the cap intermediate the two circular series of clutch-elements.

2. In cap-spinning mechanism, the combination with a revoluble spinning element, of a live cap mounted upon the blade or barrel 01 such element, said cap having an internal bearing surrounding the blade or barrel 01" such elementand having also in conjunction with the said internal bearing an upper and lower series of clutch-elements, each series comprising a plurality of said clutch-elements which normally make light frictional contact with the said blade or barrel, and are permitted to move outward under the action of centrifugal force, and a pivot cooperating rad ally with the exterior of the cap in a line extending radially of the cap intermediate the two circular series or clutch-elen'ients.

29. In cap-spinning mechanism, the combination wlth a revoluble spinning element, of a live cap mounted upon the blade or barrel of such element, said cap having an internal bearing surrounding the blade or barrel of such element and having also in conjunction with the said internal bearing an upper and a lower series of clutch-elements, each series comprising a plurality of said clutch-elements which normally make light frictional contact with the said blade or barrel, and a revoluble pivot cooperating radially with the exterior of the cap in aline extending radially of the cap intermediate the two circular series of clutch-elements.

30. In cap-spinning mechanism the combination with a revoluble spinning element, of a live cap mounted upon the blade or barrel of such element, said cap having an internal bearing surrounding the blade or barrel of such element and having also in conjuncton with the said internal bearing an upper and a lower series of clutch-elements, each series comprisin a plurality of said clutch-elements which normally make light frictional contact with the said blade or barrel, and are permitted to move outward under the action centrifugal force, and a revoluble pivot cooperating radially with the exterior of the cap in a line extending radially of the cap intermediate the two circular series of clutch-elements.

ltGBlt'tT BURGESS.

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