US2604122A - Whip roll bearing - Google Patents

Description

July- 1952 F. J. UPCHURCH 2,604122 WHIP ROLL. BEARING Filed April 27, 1949 2 SHEETS-SHEET 1 A TTOENEY y 22, 1952 F. J. UPCHURCH 2,604,122

WHIP ROLL BEARING Filed April 27, 1949 2 ,Sl-IEETSSHEET 2 FRANK J UPClll/kdl, INVENTOR.

A TTOE/VE) Patented July 22, 1952 D .l& ;S.'Engineering C panyagCharlnttekNinn it a r a corporation of North Carolina; i

ApplicationApril-ZTY, 19ra=senarnwsa9e This invention relates to textile machinery and more especially toimproved insertable bearings for supporting 'a'whip roll or whip-roll shaft'on a loomfi -In-inany= 100m stru'cturesythe warp is drawn, under tension, irom a=conventional warp beam in awertical directionand then passes overa vibrating v whip roll and through I conventional heddles;-after= which -it extends to a reed for weaving cloth from-the warp yarns in the usual manner;-

Inorder-to maintain auniform tension in the 2 Claimsr. (01. 13917114) c warp' yarns with vertical reciprocation of the heddle's -it-is necessary that the vibrating whip rollbe --mounted for oscillation on an eccentric pivot so itca-nbe raised or lowered to compensate-for variation in the Warp. The whip roll pivot is usually supportedbya pair of brackets or" arms -disposed adjacent the loom side frame members and these brackets are, in turn,mounted on a whip roll shaftroscillatably mounted in brackets secured to proximate .sidesiof the loom frame 'members. Heretofore ,thehbrackets' for supporting theLVibrating .Whiipi roll Qpivot, as. well as..the brackets forisupporting the whip r0l1 shaft,h-ave either been provided with aplurality of notches -in vtheir upper; ends. in which the. vibrating .whin roll pivot was..m0.unted, or, in other. instances, these brackets have been provided. with fiat.v bottomed. notches in;thej.upp.er. ends .thereoi.

intdnwhichwoodenibearing blocks have been mounted jor. oscillatable; reception of the;vibrate ing.swhip rollipivoth It lis, anhobject of, thism-inventionmo provide bearingeblocks which supplements. the wooden blocks. heretofore, describedhltheselbearing. Jolocks being provided withsemi-circular.inserts or bear: ing members of (7 a preferred bearing material such aSs-bIIODZG; brass and the like..,

Itiis. another object of {this inventionito pro: vide' aremovable bearing ;blookmwhich adapted tosbe mounted on the. :usual ,vibratingwhip. roll pivot bracket, this bracket usually beingnpro: vidediwitn a pain of semi-circular .notche's inits upper; .endlin either one. of, Which the eccentric pivotfiof the vibrating-whip. rolhisflmounted for oscillation; .In this v;instanc.e,i the. conventional vibrating whip .-roll pivotabracket is mod-iflediin that theaportion whichiseparates Nthemotches is removed thus: providing the bracket: with a single elongated notch and.-.the :improved bearingiblock is zfitted to this; notch Thisiimproved': bearing block is provided, with a-esinglemnotch Y in: its-;-11pper. -;f ace which cor: f i qndiizv .-.t0;.c onealofg-the aenotchesx; previously appearing: in: :the: awhipi r0111;:pivotrrbrackt. A semi-circularrbearingarr member; of :a :prefer-red bearing .gmaterialysisuch :zas zbrass-,z:;bronzei and the i like, is inserted in the bottompfsthe:notclnin;th improved (bearing block andcthepivot-:for:.-';the vibrating whip roll-f :is; mounted ifo'r. "oscillation thereonv: If iso desired,-:,:thei improved bearing block may be turned-180 degreesreon ::its:vertica1 axistorthus: position the:notclrappearingiherein in' the srsame iposition arthe .Emtevious other- '.of athe' notches :;occupied in thei'zoriginal bracket fonfthe vibratingmwh-ip roll :Divot-i: v

Some" .of theihobj eats-rottheeinvention :having:

-ingqtheimnrovedlhearingablockainxanralternate v Figure. fiiisfanotherisidenelevation of,-a,.portion of-iaaloomfishdwingiafimodifiedgform iii-theme: mdvableabearinga-block.sashappliedQtQMJbQthi'IhQ whip n, .roll bracket and the vibrating whip roll pivotibracketh v Figure-6 is; a. fragmentarizv.tbi iplamview taken substantially1 a1ongithe. line-3+6 infili'aurei5;i

Fi ure :7,- is an enlar ed. elevation k showingv a ,vibratinawhipxoll pivot bracketwhich'is,siighti different, f-rom themvibratingwhip; roll [pivot braeketshownin.FiguresB iandnil andgshowine th iim difiedsformfiof ,thenbearinamm mber; as plied. thereto aandtakenisubstantiallyalong the lineflelinfiaurefii' V v FigumB ,i's-ayerticalisectionaljview on a. slisliti 1y yreduned ,.scale;and is taken isubstantiaillyfalons the uncalled-i8. inLFi ureJ. andshowing;apportion of {the v1Ii-b matineeairihipgroll.LDivct associated tlll'fikf within r v v. Figure .49 isQanenIarged vertical sectionalyiew hrou h lonegci. the lconventional whip.-, 011 haf bracketsand .(showing, the modified form of the bearing. block.assnciateditherewith :and is when substantiaiiyg alona tnemiine 35:9 inilsun:

,Referring more specifically to the drawings,

the numeral Iii indicates one of the side frames 7 v the end of the crankshaft l2.

A conventional whip roll cam follower arm l extends beneath the end of, the crankshaft i2 shown in Figure 1 and engages the camwheel 14.

The right-hand end of the whip roll cam follower arm I5 is fixedly mounted on an extended shaft of cast iron and it is preferred that the semicircular bearing member 45 be of a softer mate rial than the shaft carried thereby so that the bearing 45 will wear rather than the shaft l1 and may be replaced with a minimum of labor and expense.

The lower surface of the bearing block 4| is provided with a pair of threaded bores'fl'l and 48 and the lower right-hand portion of the bracket is slidably penetrated by a screw 50 which threadably engages the threaded bore 41 in the instance of the bearing block 41 being mounted portion 11 of a conventional; eccentric i-zpiyot' member is to'which one end of a conventional vibrating whip roll 2| is secured as by a screw22.

The opposite end of the vibrating whip roll 2| is not shown inasmuch as it is mounted in an identical manner to the manner shown in Figure 2 and an illustration and description of the same is deemed-unnecessary, I n The pivot member I8 is oscillatably mounted in an" improved bearing member 7 to be later described'and which iscarried by avibrating whip roll' bracket broadly designated at "25.- This vibrating whip roll bracket 25 has 'an"e'nlarged boss 26 at its left hand end in'Figures '2, 3 and 4 which is fixedly mounted as by a set screw 21 on a conventional whip roll shaft 30 'oscill'atably mounted in a conventional whip roll shaft bracket 3| provided with a plurality of semi-circular" notches 32 in its upper face for reception of the whip roll shaft 30. The conventional whip roll shaft bracket 3| is secured as by a bolt 34 tothe inner surface of the'side frame member [0. It is to be understood thatthe other end of the whip 'roll shaft 30 is mounted in identical manner to {that shown in Figure 2 exceptopposite hand g r e d The conventional whip roll shaft 30 has a conventional whiproll lever collar 35 fixed en its lower end in Figure 2 and against which the upper end of a conventional whip roll lever 36 is secured as by a screw'3'l which is threadably imbedded in the end of the shaft 30. V

: fWhip roll arms such as the bracket 25, are usually provided with a pair of semi-circular notches in their upper right-hand ends 'injFigures'iiand 4. However, in this instance, the portion which defines the proximate surfaces of the two notches is removed from the bracket' 25 and the bracket 25 is thus formed with an elongated notch 40 in its right-hand end in:Figures 3 and 4.

One'form of the present invention comprises a bearing block- ,4! which is fitted to the notch 40 formed in'theright-handportion of the bracket 25 in Figures 3, and 4,'and has a semi-circular notch 42 cut in its, upper surface and extending aeresstne bearing block 4!. The bearing block is also provided with 'a pair of projections 43 disposed at the upper edges of the semieci rcular notch l2. vA semi-circular bearing member, whose outer periphery conforms to the curvature of thebottom of thenotch' 42, is inserted in' the notch 42 andlis held therein by a pressedfit between the bottom of the notch 42 and the lower surfaces of the projections 43. Thissemi-circular bearing member 45 is preferably of bronze, brass, ,babbit or other bearing material inasmuch as .theshaft portion 11 of' the eccentric pivot member [-8 is mounted for oscillation on.this semi-circular bearing member 45 and is usual y in the bracket 25 with its semi-circular cavity 42 being disposed to the right of the center of the notch 46 in the bracket 25as shown in Figure 3.

However, in the'event the operator of the loom desires to position the eccentric member l3 closer to the front of the loom, as is often the case, the

bearing block M is then turned around and placed in the notch 40 in the manner shown in Figure 4 and, in this instance, the screw 50 would threadably engage the threaded bore 48 rather than the threaded bore 41 for securing the block M to the bracket 25. It is thus seen that the bearing block 41 ,in conjunction with the bracket 25 as shown in Figures 3 and 4, will serve the same purpose as the original bracket that this bracket 25 is adapted to replace and which had a pair of semi-circular notches in the upper surface thereof. of the type shown in Figures 3 and 4 may also be applied to vibrating whip roll brackets which may, heretofore, have been Worn to such an extent that they would have to be discarded and, in the event of the bracketbeing used such as that shown in Figures 3 and 4,'the life of this bracket 25 and its bearing block M would be unlimited, it merely being necessaryto replace the semi-circular bearingmember 45 as-itbecomes worn. l r

V Modified form Since many loomsare not identical, another form of the inventionisshown in Figures 5 to 9, inclusive, said invention being applied to a loom such as is manufactured by the Draper Corporation and is known as their Model XK loom, In Figure 1, the invention is shown as it is ap--.

plied to the left-hand side of a loom, however,

in Figure 5, the modified form of the invention is shown as being applied to the right-hand side of a loom. With this exception, the conventional structure of the loom in Figures 1 and 5 is substantially the same and therefore those parts in Figure 5 which are similar to those shown in Figure 1 will bear the same reference characters with the letter a appearing aftereach number and therefore a further description of these like parts will'not be given. It might be stated, however, that the whip roll cam follower arm 15a extends above the end of the crankshaft l2a in Figure 5 rather, than below the crankshaft as the cam follower arm l5 isshown in Figure l. V

Referring to Figures 5 to 9, inclusive, it will be noted that the vibrating'whip roll pivot bracket 25a and the whip roll shaft bracket 3|a are'of a substantially different structure than the vibrating whip roll pivot bracket 25 and the whip roll shaft bracket 3| in Figures 1 to 4, inclusive, and, it is due to this variation in the brackets that I have provided a modified form of bearing block which may be applied to the brackets 25a and 3 la without alterin the brackets 25a and 31a other than removing the wooden bearings which are usually provided with brackets of this type and It ismanifest'that a bearing block inserting my improved bearings in lieu thereof.

The vibrating whip roll eccentric pivot bracket 25a. is usually provided with a pair of notches 66 and 6|, which, in some brackets, are provided with flat bottoms and others of which have downwardly and inwardly sloping corners merging with a fiat bottom. One of the ends of each of these notches 56 and 5| is usually open and the other end is partially closed by a web portion 62. Each of these notches 60 and 6| is adapted to receive an improved bearing block 63, one side of which slidably engages the inner surface of the web portion 62. These bearing blocks 63 are secured to the bracket 25a as by screws 64. The lower corners of the bearing blocks 63 are out on an angle as at 65 so these bearing blocks 63 may be used in brackets whose notches are provided with flat bottoms all the way across the same or whose notches are provided with sloping side walls at the bottom corners thereof.

Each of the bearing blocks 63 is provided with a semi-circular notch 61 and also has projections 10 integral therewith which extend into the notch 61 at opposite sides thereof. A semicircular bearing member 12, preferably of brass or bronze, is adapted to be inserted in the bearing block 63, its lower surface conforming to the curvature of the notch 61 and its upper edges engaging the lower surfaces of the projections 10 so as to secure'the semi-circular bearing member 12 in the bearing block 63 as by a pressed fit.

The whip roll shaft bracket 31a shown in Figures 5, 6 and 9, is provided with a plurality of equally spaced notches 15 all of which are identical to the notches 66 and 6| in the bracket 25a. These notches 15 are also partially closed by a web portion 16 similar to the web portions 62 of the bracket 25a. A hearing member 11 is secured in each of the notches 15 as by a screw 86. These bearing blocks 11 are each provided with a semicircular bearing member 18 on which the shaft 30a is oscillatably mounted. The bearing block 1'! is identical to the bearing block 63, with the exception that its size may have to be varied somewhat to accommodate the notches 15 in the whip roll shaft bracket 3| a. A further description of the bearing blocks 11 and the whip roll shaft bracket 31a. is therefore deemed unnecessary.

In the drawings and specification there has been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only, and not for purposes of limitation, the scope of the invention being defined-in the claims.

I claim:

1. In a loom having a whip roll over which a warp is adapted to pass, said loom also having a whip roll shaft supported by the loom, means for supporting the ends of the whip roll comprising a bracket fixedly mounted at one end thereof on one end of the whip roll shaft and extending outwardly and upwardly from the whip roll shaft, said bracket having an elongated notch in its upper face extending longitudinally of the bracket, a bearing block, said bearing block having a transverse notch in its upper face and said transverse notch being positioned to one side of the longitudinal center of the block, a semi-circular bearing member mounted in the semi-circular notch in the block and on which the end of the whip roll may be oscillatably mounted and means projecting into the notch in the block for confining the semi-circular bearing member therein, said bearing block having two spaced threaded bores in its lower portion, said bracket having a projection extending upwardly from its bottom surface for entering one of thethreaded bores in the bearing block, said bracket also having a vertical bore therethrough for reception of a screw which is adapted to enter the other threaded bore in the bearing block.

2. In a loom having a whip roll over which a warp is adapted to pass, said loom also having a whip roll shaft supported by the loom, means for supportin the ends of the whip roll comprising a bracket fixedly mounted at one end thereof on one end of the whip roll shaft and extending outwardly and upwardly from the whip roll shaft, said bracket having an elongated notch in its upper face extending longitudinally of the bracket, a bearing block and means for securing the bearing block inthe notch of the bracket, said bearing block having a transverse notch in its. upper face and said transverse notch being positioned to one side of the longitudinaI center of the block and a semi-circular bearing member mounted in the semi-circular notch in the block and on which the end of the whip roll may be oscillatably mounted andmeans projecting into the notch in the block for confining the semicircular bearin member therein, said means for securing the bearing block in the notch of said bracket comprising a substantially vertically extending screw mounted in said bracket and pene-g trating the notch in the bracket in off center relation lengthwise of the notch, said bearing block having a pair of threaded bores in its lower surface, whereby one of the bores may be threadably penetrated by the screw for securing the bearing block to the bracket and, when desired, the screw may be removed from the first of the threaded bores and then the bearing block may be turned degrees so as to aline the other of the threaded bores with the screw and to thus change the position of the semi-circular bearing member in the bearing block as the bearing block is secured to the bracket.

FRANK J. UPCHURCH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

Images