US2648948A - Spindle mounting - Google Patents

Description

1953 D. G. SOUSSLOFF EIAL 2,648,948

SPINDLE MOUNTING Filed April 25. 1951 2 Sheets-Sheet 1 I} in i L-- I lllll I III] y W IN V EN TOR. D/M/ T/P/ 6. $0 USSL OFF BPNOLD (I WH/TE v I Aug. 18, 1953 D. e. SOUSSLOFF EI'AL 2,648,948

SPINDLE MOUNTING Filed April 25, 1951 2 Sheets-Sheet 2 IN V EN TOR. DIM/75V 6.500554 OFF ARA/OLD CT WHITE Patented Aug. 18, 1953 SPINDLE MOUNTING Dimitri G. Sousslofi', Warwick, and Arnold G. White, Greenwood, R. I., assignors to Universal Winding Company, Cranston, R. L, a corporation of Massachusetts Application April 25, 1951, Serial No. 222,837

14 Claims.

This invention relates to a spindle mounting for a twisting machine, and, more particularly, relates to a spindle mounting of the kind in which the spindle is rotatably supported on a pivotally mounted arm.

The manufacture of textile material frequently involves the preliminary step of twisting the strand material, such as textile yarn, from which the textile material is to be formed, in order to obtain a desired mechanical characteristic or appearance in the textile material. Such preliminary twisting of strand materials is done on a twisting machine, and one type of machine commonly employed for this purpose is known in the art as an uptwister.

The present invention may be used advantageously on the uptwister type of twisting machine, and in order to facilitate an understanding of the invention an embodiment of the invention which may be used in this type of winding machine is illustrated and described herein.

A conventional uptwister consists of a plurality of yarn twisting and Winding pairs, each such pair comprising a rotatable spindle adapted to support a yarn supply, and a yarn take-up device which includes a bobbin, spool or other core onto which the twisted yarn is wound.

It is well understood in the art that in machines of this kind the spindle carrying the yarn supply is rotated at high speed as the yarn is drawn off the yarn supply by the take-up device. The degree of twist imparted to the yarn is determined by the relation between the winding speed of take-up device and the speed at which the yarn supply is rotated by the spindle.

It is a common practice in the art to drive the spindles in a machine of this kind by means of an endless belt which drivingly engages the whorls of a series of spindles arranged side-byside along the length of the machine. Such driving means provides a simple and inexpensive construction which is capable of delivering equal driving power to each individual spindle, thus assuring a constant spindle speed throughout the machine, and a uniformly twisted product from all of the winding pairs. In order to obtain a constant spindle speed throughout the machine it is necessary to maintain all the spindles in contact with the belt constantly by mounting the spindle so that the spindle may follow the undulations of the driving belt which occur at high belt speeds. This is generally accomplished by mounting the spindle on a swing arm pivoted to a stand which is supported on the frame of the machine. The pivoted swing arm is springpressed in the direction of the driving belt, and thus establishes a yielding driving engagement between the spindle and the driving belt.

Continuous and trouble-free operation of machines of this kind can be obtained only when the forces by which the spindles are held in constant driving engagement with the belt are sulficient to insure uniform spindle speed, and at the same time not so excessive as to cause undue wear of the belt and the spindle supporting hearings in the spindle mounting. Operation of the machine causes sustained vibrations in the spindle mounting. Occasional adjustments of the spring tension by which the driving engagement is maintained are therefore necessary. Spindle mountings heretofore employed have been difiicult to adjust.

One of the purposes of this invention is to provide a spindle mounting of the kind discussed above in which the tension of the spring that acts to hold the spindle in engagement with the driving belt may be adjusted quickly and conveniently without dismantling any part of the spindle mounting or the machine with which it is associated.

In order that the spindle may quickly follow the undulations of the driving belt it is necessary that the pivoted swing arm be free to move easily about its pivot. As the yarn supply carried on the spindle, the spindle itself, and the spindle step represent a considerable amount of weight disposed on the distal end of the swing arm, the swing arm tends to bind on its pivotal support and thus slows the response of the spindle to undulations of the driving belt.

A further object of this invention is to provide a novel means for pivoting the swing arm which provides a sturdy bearing between the pivot post and its supporting means, and which utilizes the pivot means to house the adjustable spring arrangement by which the spindle and the driving belt are held in driving engagement. This construction provides a. compact, efficient and readily adjustable spindle mounting.

A further object of this invention is to provide a spindle swing having novel means for lubricating the bearings between the pivot post and its support.

A further object of this invention is to provide a spindle swing having means whereby the bearings between the pivot post and its support can be provided with suflicient lubrication to last an extended period of time.

It is desirable in a winding machine of the kind described above to have means for interrupting the drive of each individual spindle, so that the machine operator may, as necessary, stop the spindle and replace an empty yarn supply with a full one. Such replacement by the operator is facilitated by providing means on the spindle mounting which act to arrest the rotation of the spindle immediately following its disengagement from the driving belt, and by providing further means which prevent the spindle from being dislodged from the spindle mounting when the operator thereafter doffs the empty yarn supply.

A further object of this invention is to provide 3 an improved. means for withdrawing the spindle from engagement with the driving belt of the machine which acts to lock the spindle in its disengaged position subject to quick, easy release.

A further object of this invention is toprovide' an improved means for preventing the spindle from being dislodged from the-spindle mounting when an exhausted yarn supply is:r.emoved;from the spindle.

Further objects and advantages'of the invention will be apparent from the following description of the invention and from the accompanying.

drawings.

Blithe-drawings:

Eigure- 1 is atop .plan view of a spindle mountingsvconstructed according to this invention;

Fig, 2 is a front elevation view or" the same spindle mounting showing also the lower porion ofgthezwhorlof a spindle mounted thereon;

Fig. 3risa vertical sectional view on line 33 ofzEigzl;

Fig; i' is at side elevational View of the same mounting, showing its operative relationship to a frame member, shown in dotted lines, and a driving -belt; shown in dotted lines, with which the mountingmay-be associated;

Fig. .5z-ista section on the line 5-5 of Figure 1 showing the. cam means by which the spindle mounted-ion the-'spindlemounting may be retracted from engagementwith a driving belt in the-:positioninwhich it effects such disengagement; and

Eigiifivisca;verticalsectional view on line 5-5 ofzFigurelshowing the same cam in the position which it'assumes when the spindle carried by the mounting; is in engagement with a driving belt.

In general, the embodiment of the invention illustrated in the drawings comprises a base membenorstandiiiton which a swing arm 52 is pivotally supported. Thetdistal end of the swing arm is adaptedrto. carry a spindle support indicated generally at I 4.? Aspindlecomprising a spindle blade I5, .to.;which is fixed the spindle whorl It, is rotatably supported. on the support in the conventional manner; Thisspindle carrying portion ofthe 'armispressed-lin a direction about its pivot wh ich will cause th'e:spindle carried by the support to move intoengagement with a spindle driving-meana such -as the driving belt I? shown in the-dotted linesin Figure l. The swing arm is urged inathi's direction by an adjustable resilient means which includes theheli'cal springlB shown in-Fi'gure 3; The spindle carried on the support maybedisengaged from the driving belt by operation of a hand lever which rocks a cam 22- agai-nsta' cammingsurface provided on the swing arm. Th'e-= positions of the cam 22 relative to the=camming surface on the swing arrnwhen the spindle isdi'sengaged from, or engaged with, the driving belt are shown-respectively, in Figures 5 and-16i- Meansareaprovided to prevent the cam 22 fromn-beingsrocked beyond its dead center of relationship with-the camming surface on the arm -l2 so .that'th'eswing arm may be locked in the-position wherein. the spindle is disengaged from-the driving beltsubject to quick release by alight-upward pressure on the lever-2%.

The illustrated spindle mounting also coinprises-abrakemember 24 anda spindle retaining means 26iw-h-ich aresupporteo. on an upright post 28. This-post is supported onthe stand iS-and extends upwardlyth'erefrom through an arcuate aperture =3lllin the swing arm 2. The brake member is positioned sothat it engages the whorl [5 of the spindle carried by the support 54 4- when the spindle-is swuiigi'from engagemeht with the driving belt H by means of the lever 29. The

' spindle retaining means 23 is positioned so that a terminal portion thereof overlies a flange provide'el orrthe spindle whorl I6 when the swing arm is rocked into its spindle disengaging position, shown in- Figure 5, thereby preventing the spindle from being dislodged from the mounting when a yarn package orcore supported on the spindle is doffed.

In the particular" embodiment of the invention generally described above, the base member or stand i3 is a generally rectangular-shaped block: havinga flat rear surface 3% which may suitably engage a longitudinally eiitieiidihg' frame member of'the machine with which the 'spindle'moiinting' is to be associated, such a's'the member 36 shown in dottedlines in i i gure t; andto which member it maybe fixed by studs such'as 3%"a'nd' 49, also shown in dotted lines in Figure 4'.

The swing arm i2 is pivotally supported on the" stand it by means including the tubula1'"piv'ot-' post ifwhich is fixedly securedwitl'iin'an a'p'ei' tureprovided towa-rdone end of the swing arm; The upper enol'of the tubular pivotpos't'l' tr ininates in the plane ofth'e upper surface o'fthe" swing arm, and the lower portion thereof of:- tends downwardly from the underside of' the swing arm into the recess- 3 5 providedin' the stand l9: As shown in Figure 3; the recess it may be provided by-formingla through-going, vertically disposed passage in the stand iii-which isclosed off at its lower end by. means of a plug. 36 having. an upstanding. circular flange 68 Within this circular flange-the lower end'tt or the tubular pivot post dil may'be journaledf Toward the upper endof the recess i l'th e wall thereof is cutback to receive the annular bearing 52 composed of aporousbearing-material. The diameter of the bore -of bearing d -is'lessthan the diameter of recess iihtoprovide a space hetween'pivot'post and the wall of'recess 44 adapted tocontain a supply of I lubricant. The bearing-52 closely encircles the tubularpostcfi: The Wallet the cut back portion of the-recess is also recessed toreceivethe -annular oil wick 5 4* which is thus positioned tocontact andlubricate the bearing 52; Wick E lis provided with a taillike dependingportion 55 which is received in longitudinal groove'53 in'stand it to have itslowermost end adjacent the lower bearing 48," 5%; and in contact with lubricant contai-ned in -the' space between pivot post 42 and the wall of recess 44. It-will thus be seen thatthe lowerbearingformed; by circular flange 48' and the-lower end-50 of pivot post 12 'is' immersed in a supply of-lubri cent, and that the upper bearingis-lubricated 'by' lubricant passins'up thetail-like' portion 55%;: wick- 5 i and through porous bearing member 52? It will be observed that th'e'bearing 52 engages thepivot post 12 along asubstantial portion of ltslengtht This construction, whereby'thelower end of the post'is-steadied withinthe circular flange in and 1 a E large area ofthe intermediate portion turns with-in the bearing-52 insures that the swing arm 12 will not-'bind onits 'pivot' even though the relatively large weight-oi the spindle mounting and the yarn package carried thereby 1s disposed' on the 'distal end of the swing armz The distal end of theswing arm 1 2-is provided. with an aperture which is circular-inoross'sec tion, and which receives the shell 55 of the-spin-- dle support M. The spindlesupport comprisesa spindle step fifi in whicn the" spindle bladei 5 is journaled for rotation, the spindle blade hav-- ing fixed thereto the whorl I6, as previously mentioned. The spindle step is elastically supported on the shell 56 by means which include the rubber rings 62, 64 which are bonded to the shell and to the metal washers 66, 68. The metal washers 66, 68 along with the sleeve supportably engage the spindle step. The spindle mounting is secured to the swing arm by the set screw 72 which threadedly engages the walls of an aperture in the end of the swing arm and abuts the portion of the shell 56 which covers the inner opening of this aperture.

As previously stated, the spindle carrying portion of the swing arm is spring pressed about its pivot in the direction which will cause the spindle whorl IE; to engage the driving belt IT. The adjustable resilient means by which this is accomplished includes the helical spring I8 which at its lower end is fixedly positioned with respect to the stand ill by means of the pin 80. This pin. threadedly engages the walls of a horizontally disposed aperture in the lower portion of the stand I0 and extends through a circumferentially extending aperture in the tubular member 42, as may be seen best in Figure 3. The end of the pin 00 is provided with two circumferentially extending grooves, and the lower end of the spring I8 is formed to pass downwardly in one of these grooves on one side of the pin, and to pass beneath the pin and have its terminal portion rest in the other groove on the other side of the pin. This arrangement firmly anchors the lower end of the spring against rotative movement with respect to the stand I0 and also looks pivot post 42 against removal from stand I0 while permitting it to pivot freely therein. The other end of the spring is fixed to a plug-like anchorage 86 which. is positioned within the upper end of the tubular member 42 so that it may be freely rotated therein. It will be seen that the tension on the spring I8 may thus be adjusted by rotating the anchorage 86. To facilitate such adjustments a tool receiving recess 88 is provided on the top surface of the anchorage. The spring means, thus adjusted to the desired degree of tension, is secured to the swing arm I2 by means of the set screw 90 which threadedly engages the Walls of an aperture formed in the end of the swing arm and which extend through a registering aperture in the tubular member 42 to abut the spring anchorage 86 set in the desired position. With the anchorage 83 thus locked to the swing arm, the spring I8 acts to swing the arm about its pivot and move the spindle carrying portion of the arm towards the driving belt, whereupon a driving engagement is established between the belt and the spindle whorl. It will be seen that in addition to obtaining a compact and eflicient construction wherein the spring means is housed within the pivot for the swing arm, the construction is also such that the tension on the spring may be quickly and readily adjusted. Manipulation of the set screw 90 and the anchorage 06 only are necessary to adjust the tension on the spring. Both the anchorage 86 and the set screw 00 are positioned where they are readily accessible and can be easily manipulated at the same time. It will be apparent that adjustment is accomplished by first loosening the set screw 90 and thereafter turning the anchorage 86 until the desired tension has been established on the spring. The set screw may then be tightened to complete the adjustment.

It has been previously mentioned that the spindle mounting comprises means including the cam 22 for swinging the spindle carrying portion of the arm I2 away from the driving belt I 1 against the action of the spring I 8, and for look ing the arm I 2, subject to quick release, in the position wherein the spindle is disengaged from the driving belt. The upper rear corner of the side of the stand I0 shown in Figures 5 and 6 is cut back to provide a two-sided well having sides 94, 96 and a bottom ledge 92 which underlies the cam 22. One end of the lever 20 (shown in dotted lines. in Figure 1) is angled-over and journaled in a horizontally disposed passage in the upper rear portion of the stand I0. This passage at one end opens onto the wall 96, and the cam 22 is fixed to the portion of the lever 20 which extends from this end of the passage. The cam 22 may thus be rocked in a vertical plane between the positions in which it is shown in Figures 5 and 6, respectively, by imparting an upward or downward movement, as may be required, to the handle 98 which is fixed to the free end of the lever 20, and which is conveniently disposed across the front of the stand ID.

The cam 22 is provided with a nose portion I 00 which works against the camming surface I02 provided on the arm I2 to swing the arm against the action of the spring I8 to the position wherein the spindle carried by the arm is disengaged from the driving belt. The camming surface I02 is formed in part on one surface of a lug I04 which extends from the underside of the arm I2 into the two-sided well previously mentioned.

The relationship of the cam 22 and the camming surface I02 when the swing arm I2 is at the limit of its pivotal movement towards the driving belt is shown in Figure 6. A spring I08, shown in Figure 4, which is coiled about the lever 20 and fixed to the lever and to the stand I 0. tends to move the lever 20 and the cam 22 toward the positions in which they are. illustrated in Figure 6. This upward rocking movement of the cam nose I00 is limited by the flush engagement of a surface I08 on the cam with the surface of the pad I I0 which is formed on the ledge 92. At this limit of upward movement the cam nose is free from the camming surface I02 and whorl I6 is in engagement with belt I! in response to the action of the spring IS.

The spindle carried by the arm I 2 may be disengaged from the driving belt by moving the handle 08 downwardly from the position illustrated in Figure 6 to that shown in Figure 5, thus causing the cam nose I09 to move downwardly along the camming surface I02 and to swing the arm I2 against the action of the spring I8 tothe position illustrated in Figure 5. This downward rocking movement of the cam nose is limited by the flush engagement of the planer surface I I2 on the cam with the surface of the pad H0. The surface H2 is positioned on the cam so that the downward rocking movement of the cam is stopped when the cam assumes, or passes slightly beyond, its dead center relationship with the camming surface I02. At this point, the force applied to the cam by the spring pressed arm I2 has no vector about the pivot point of the cam and together with the action of brake 24, to be explained in detail hereinafter, establishes a frictional drag on the nose of the cam which is sufiicient to overcome the tendency of the spring I06 to raise the cam to the position illustrated in Figure 6. A slight upward movement of the cam nose imparted by a slight upward movement of the handle 98, moves the cam. off its dead center and both the spring I06 and;

the -spring I 8 rthen;1ect' toremmrlthe ream and mg means and; a second" apertiireitowards its: the swin aarm to the pos ns ust ate n e ie othei en'd' to receive "atubular member; a down lire wherein theilspindilf Carried? y="-" a war-dly extending tubular "member fixedj- Within engages the drivin'gsbeltz said"second "aperture and tei'mi'nating at -its' up The spindlWbTaKel- 24;?-previouslyfimentiondsi 5& per end theplane of the-upperhorizontal-sur is pp 118post5283and consists -ofia -re face of'said swing element, said base 'm'ember silient metal striphaving itstintermediates por being provided th e s: to'receive? d: tion curvedfconcentrically with 'the outside diam d wn rdly: t din rti n' id tubumr eter oflthe spindleiwlionl-i i5; v To this interme member, whereby the'said' swing element'is sup diate portion is fixed a:compositioniffictidn pad- 10 -ported-for pivotal movement on said'base mem 1 H5; seem bestinlFi'gu-re 1,: against whiclmthe her-, adjustable spring means acting on aidr;

spindle whorl'is brought to :bearrwhen it, is with swing element and tending to" impart pivotal awnf o a ement withs the driving 10F11 movement I in one direction 'to' 11 said 1 swing elein the mannerdescribed:above:toeflex ther ree ment; said spring. means comprising a 'helical silientmetal stripiiand thus aapply'l-az brakingcef-f 5; spring disposed within said tubular member;- feet to the spindle Theibraking.effeet thusobe: meanslsuppgyted"on' d gbasevmember fixedly} fiain mfiy besl'egillatedi and 'adillsillirililfllist t positioning one end of thespring withweSpecft cflmpensateifori wear of lthe fricticn pad may b thereto; a plugelike' spring anchorage rotatablyr made: y" b i repositioning fi 1 5 23 supported in the upper end of sa'id tubular mem Within: the recess in the :standil i} zwithinwhich'it igg a; bets, the other end'of thespring beings-fixefi-to pp ThBlJOSt isif-letained 11H 'DO tiO said anchorage, whereby the' tension-of said F thus' selected: by meanssoiithe set screw llfi spring :may be adjusted -.by'rotatingthesaidan- Which fi a yengagrssrai hOI'iZOHtaHYJ' chorage, and means :for"releasably-securing saiclposed aperturein:theestandflandllwhionat-ithe wi gz lement t said'anchgrage.When-the-'de end of t ap op ins n th recess a t *25 :sir'e'd degree of tension has been imparted to-saidthe-lowerencLof thEWD l? Inf-addition"tov'flps spring by'the rotation of said anchorage "to-a plying a-brakingiefiect :to ztheispindle theifiexed' selected position resilient metal stnfipalsoexerts aforcetonswingi 3; A spindle'mountingifcr a'twistinge-mal'ghin-g? a !2, th ue nv or1 1s and-spindlelb de i5, cemprising base merhloer,-a swing element tOWaftiSi t b6113- engagifig; Position ThiSfOICe? socpivotallyi carriedby said base member adapted" eXer'fiedi y rakei ifiin addition to =theforce t i-otatably support a-spindle;- springfimeans exertedinthesamedirection by 'springw is sufii+;- urging said element ina directi -n-which== Cient o Overcome ya-of spr ;I 0 t will cause the spindleto be clrivi'nsly engaged-by pivot.cam:22 tozits" unlaitched: =position=il1ustratejd-: an associated driving Tmeans; means for releas imFiafis ;ably withdrawing the spindle'irom driVingen- The spindle retainingimeansazfi: consists of agagernent with said'drivingmeans-comprising a ho'rizontallyivdispnsed: plate which: is also fixed". cam'm'ounted" on saidebase-member and adapted to thelpost 28 toa'oi/terlieethe swing iarmt l 2.; The: to he rocked from a first position to-a second posiplatesextends radiallyiromsthe po'sttotthe point tion, a *camm-in'g surface positioned-onsaiclswing where thevedgepizthez plate zov'erliesa flange-11ml n10 .el'em'entato' cooperate 'withf-sai'd oam; means' for; formed omthebottorrraedge OfthBiSDiIl'dlE whorl" roakiiignsaidcam from-said-first positionto said M: evnen thei swine arm'zis locked in the position: second positionwhereby i n a e sai urf e whe vejnihsz'spind l e carriedlrbymthe: a mpi ,.;=ldi to moitesaid swingelement aWay fBom-saidspin engaged from the driving belt; The pla'te Zfi thus l d iv ng means a action said spring/land a resilient brakingvmember: adapted; to' be engaged by a portion of saidspindle -as= it is :moved away from said-spindle driving @m-eans tostop-the'rotation of saidespindle; said resilient brakinganember exerting a force on saicl swing element to: prevent. said-cam item rocki-ng'irom said second posit-ion tow-said first position until said roekingimeansis actuated;

positioned-- prevents-'-the spindle from bein'g': dis- 4 5 lodged-from its mounting -When a yarn paok age; or a core-thereof, isremoved-fromthe spin die blade.

The claims of invention that-are desired to -be secured-by Letters Patent are set forth below 1. A spindle :meunting for a twisting machine c0mprising-abase=member,' a 1 swingelement adapterl'toreceive meansionrotatablrsupport Lina splldlflmountmgfw twlstmgmai m spindle and having an =aperture,-thereimqa chine of the kllld'ln which a swing element carry tubular member-extending from said swing ele rmatably'supported Spindle pivotauy p ment and secured-thereto in said -aperturepa ported on a base member'andspri g urged a re id -L id base;memloerito'.recei e clirecti-omwhioh will causethe spindle to-=-be drivthesaidextending.tubular.membenmvherebysaidi yengagedlbyan s w driving nls swing welement; isepivotally supported'on isaid means *fOI releasably WithdTaWing' t e p dl basemember, .a helical spring disposedr' with ini from-driving engagement with said driving means" the said tubularqmember; means supported one comprising a cam rockablymounted on said-base t s -m mb r x y p oni s n nd ofr membena camming. surface positioned on said. Said Spring with respfict thereto, Spring n swing ielement-to cooperatewith said cam; a hand' o es-ei s a supportedin saidl'tubular lever fixed-tosaid-oamioi rockingsaidcamfinto mb r -'s iu s P ioperative engagementwith said surface'vvhe re'by' the other e dp m pr me fi to the the spindle; supporting portion of said-swing as;

a aee andimeans for releasablwsecuh mentc-is -meved= away fromsaid spindle driving ing s i ines Said anchorage i a means against-the action of-the said spring, ands M sit Qe i a u t o the anchorage. means for-preventing the said" cam from" being s ina m unt s for a W- Sting-.maohine1. rocked- -toward sa-idcammingsurfac beyond its mari nea ase e x Yd deadeenter -relationship thereto; Wherby' lthe" DOS q W ;E m adapt/861410 Preceivfimeanfi spindle bearing --portion of I said. swing 1 element fo i rotatablysupperting a spindle. said-swingm may be locked away from the spindle' drivin g' elementbeing prgvided withan laperture toward means subjectio quick release.

one endgthereofi togreceive-saidspindlesupport-1 5. In;. a spindlemounting for"a twisting-machine of the kind claimed in claim 4 in which said swing element is horizontally disposed and has a depending lug and in which said camming surface is formed partially on one side of said lug, the said base member being arranged and constructed to cooperate with said lug to limit the pivotal movement of said swing element away from the spindle driving means.

6. In a spindle mounting for a twisting machine of the kind in which a spindle is rotatably supported on a swing element which is pivotally mounted on a base member and spring urged towards a spindle driving means, and which further includes means operable to withdraw the spindle from engagement With the spindle driving means by causing the spindle carrying portion of the swing element to pivot away from the spindle driving means; a spindle having a flange on the whorl thereof, a spindle brake supported on the base member and positioned to be engaged by the spindle when the spindle is swung from engagement with the spindle driving means, and a retaining element supported on said base member and positioned to closely overlie the said flange when the spindle is moved into engagement with said brake, whereby a package supported on the spindle may be removed therefrom without dislodging the spindle from its mounting.

7. In a spindle mounting for a twisting machine, a stationary brake element, means for receiving a spindle having a flange portion provided thereon, means for moving the spindle from engagement with a spindle driving means into engagement with said brake element, and a retaining means positioned to closely overlie said flange portion of said spindle when said spindle is in its brake engaging position, whereby a package may be removed from the spindle in its last said position by an upward pull without dislodging the spindle from its mounting.

8. A spindle mounting for a twisting machine comprising a base member, a swing element pivotally supported on said base member and adapted to receive means for rotatably supporting a spindle, a resilient member fixed at one point to said base member and adjustably fixed to said swing element, whereby the spindle carrying portion of said swing element is yieldingly urged in one direction towards a spindle driving means, means for releasably moving the spindle carrying portion of said swing element in the other direction comprising a cam rockably mounted on said base member, a camming surface positioned on said swing element to cooperate with said cam, a hand lever fixed to said cam for rocking said cam into operative engagement with said camming surface, whereby the spindle carrying portion of said swing element is moved in said other direction against the action of said resilient member, and means preventing said cam from being rocked towards said camming surface beyond its dead center relationship thereto, whereby the spindle carrying portion of said swing member may be locked at the limit of its movement in the said other direction subject to quick release and movement in said one direction in response to the action of said resilient member.

9. A spindle mounting for a twisting machine as claimed in claim 8 which also comprises means for receiving a spindle having a flange portion provided thereon, and a retaining means supported on said base member and positioned to closely overlie said flange portion of said spindle when the spindle carrying portion of said swing element approaches the limit of its movement in the said other direction.

10. A spindle mounting for a twisting machine as claimed in claim 9 which also comprises a stationary brake element, said brake element being positioned to be engaged by said spindle as the said spindle carrying portion of said swing element approaches the limit of its movement in the said other direction.

11. A spindle mounting for a twisting machine as claimed in claim 10 which comprises a post extending upwardly from said base member through an arcuate aperture in said swing element, said brake element and said retaining means being fixed to said post to extend radially therefrom above said swing element, and said post being adjustably secured to said base element, whereby the said brake and retaining means may be positioned as described with respect to the limit of movement of said spindle bearing portion of said swing member in the said other direction.

12. A spindle mounting for a twisting machine comprising a base member, a swing element adapted to receive means for rotatably supporting a spindle, a tubular member extending from said swing element and secured to said swing element, a recess in said base member, bearings fixed in said recess to receive the said extending tubular member, said bearings engaging said tubular member over a substantial portion of its length, a helical spring disposed within said tubular member, means supported on the base member fixedly positioning one end of said spring with respect thereto, a spring anchorage adjustably supported in said tubular member for adjusting the tension of said spring, the other end of said spring being fixed to said anchorage, and means for releasably securing said swing element to said anchorage in a desired position of adjustment of the anchorage.

13. A spindle mounting for a twisting machine comprising a base member, a swing element pivotally carried by said base member and adapted to receive means for rotatably supporting a spindle, a pivot post extending from said swing element and secured thereto, a recess in said base member, upper and lower bearing elements in said recess rotatably supporting said pivot post, and means for supplying said upper bearing element with lubricant from adjacent said lower bearing element.

14. A spindle mounting for a twisting machine comprising a base member, a swing element pivotally carried by said base member and adapted to receive means for rotatably supporting a spindle, a pivot post extending from said swing element and secured thereto, a recess having a crosssectional area greater than the diameter of said pivot post in said base member, upper and lower bearing elements in said recess rotatably supporting said pivot post in said base member and providing a reservoir for lubricant between said post and the wall of said recess, and means for transporting lubricant from said reservoir to said upper bearing element.

DIMITRI G. SOUSSLOFF. ARNOLD 0'. WHITE.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,993,584 Bartholomew Mar. 5, 1935 2,252,037 Schaum Aug. 12, 1941 FOREIGN PATENTS Number Country Date 498,704 Great Britain Jan. 12, 1939

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