US2834996A - Saddle for spinning frame or the like - Google Patents

Description

May 20, 1958 R. RULoN-MILLER ET AL 2,834,996`

SADDLE FOR SPINNING FRAME 0R THE LIKE Filed Aug. 16, 1954 3 Sheets-Sheet 1 NNN Ilm-js-Ilum/A t 54 INVENToR.

P01612; 72u /Q/l Mi//f rn er H Tab er ATTORNEYS.

May 20 1958 R. RuLoN-MILLER E-r AL 2,834,996

SADDLE FOR SPINNING FRAME 0R THE LIKE Filed Aug. 16. 1954 3 Sheets-Sheet 2 22.9.8. er 95 Eff/m ATTORNEYS.

May 20, 1958 R. RuLoN-MlLLER ET Aa. 2,834,995

SADDLE FoR SPINNING FRAME 0R IHF: LIKE Filed Aug. 1e, 1954 s sheets-sheet s ATTORNEYS United States 10.Claims. (Cl. y19-135) The present invention relates `to limprovements in saddle, stirrup, and bearing constructions `for spinning and roving machines.

Anfobject ofthe invention is to provide for rotatably `supportingthe fronttop roll in a manner so as to elimi- Vnate the frontbearings of the usual cap bar which here- 'tofore'supported the top ro'lljand which bar accumulates dirt and frequently requires replacing because of the 4wear thereon.

Anotherobject of `the invention is to vprovide for rotatably Esupporting the 'front top roll in a manner so as to provide 'self-alignment Iof 'the top roll with its bottom roll.

Another object of the invention is toprovide `a saddle so constructed as'to beheld in operative position upon release 'or disengagement of the weight lever .and the stirrup.

A more specific object is to provide a two part saddle, the parts of which are connected to each other .by alball and socket connection.

Another object of the invention is to provide a stirrup so constructed as to Vbe detachablyheld to the saddle andrequire a 180 degree swing to detach the same from the saddle.

Another object 'of the invention is to provide antifriction bearing gudgeons for the top rolls.

"With these and other objects in view, .the invention consists of-certainnovel features of construction as will be morefully described and particularly tpointed out Yin the appended claims.

In the accompanyingdrawings:

EFigure 1 is afragmentary vertical sectional .view ,taken between roll stands of a spinning or roving machine yof a construction embodying our invention;

IFigure 2 visa top plan view of the top roll assembly of the machine shown in'Figure l;

Figure 3 `is a longitudinal sectional Vview throughthe frontsaddle portion;

4Figure 4 is a longitudinal sectional -view through Vthe back saddle zportion;

rFigure Szisa front yview ofthe stirrup `shown in Figurel;

Figure 6 is a .sectional viewrtaken substantially along lnet6-6 of Figure 4;

Figure y7 is .an .elevation partially yinsectionfof atop roll;

.Figure 8 is alongitudinal 4central sectional `viewthrough another form of .top roll;

Figure 9 ,is a sectional yview\on ,a larger scale :.of one endlportion of the roll shown inFigure 8;

Figures 10 through Vl2 are views partially in section, showing the steps of assembling the stirrup ofFigure 5 to the saddle part shown'in Figure 3;

"Figure '13 is a `-fragmentary vertical sectional view similar to Figure l butshowing the Roth long draft type systemg'and Figure '14 isatragmentary-portion oftheview shown in Figure i113 but Vonan 'enlarged'scale"andslrowing the saddles in section. Y

arent ice,

Figure v15 is an end View of a modified form of gudgeon such as shown in Figure 7.

Referring to the drawing for a more detailed description of the invention, 10 designates generally a textile spinning `machine for an operation utilizing a long draft system, as by way of example, the Casablanca typecomprising three pairs of drawing rolls which are arranged to operate successively on a strand or strands of sliver. These rolls are respectively top and bottom . front rolls 11 and 12, lmiddle rolls 13 and 14, and back rolls 15 and 16. There is mounted and supported on the middle rolls 13 and 14 a Casablanca unit of a common form designated generally 17 including .a cradle which is supported on `the middle rolls and carries an upper and lower nose piece 18 and 19. An apron 20 is trained over the roll 13 and nose .piece 18. A similar apron 21 is trained over roll 14 and nose piece 19. The lower rolls 12, 14 and 16 extend the entire length of the machine and are supported in roll stands 22 of .a cornmon form, which are mounted on a roller 4beam 23. rlhe lower rolls are driven by suitable gearing (not shown), and the upper rolls 11, v13, and 15' merely rest=on their respective lower rolls. The .upper rolls with the exception of roll v11 are held in their operative lposition by cap 'bars 24 which are mounted on a stationary held rod 25 for swinging movement .toward and from Ythe v.bot-

.tom rolls, .the uppervrolls having gudgeons 4journaled in the said cap bars.

The weighting mechanism comprises ,a ,saddle `indicated in its entirety by 26 which is arranged to engage the top rolls and from which there is suspended `a stirrup 27. VThe roller beam 23 carries an adjustable -fulcrurn eye 28 in which a weight lever 29 is fulcrumed The lever 29 passes through and engages the stirrup 27 Aand is weighted by means of a Weight (not shown) which is suspended from .a hook 30 depending from the free end of lever 30.

The front top roll 1.1 (best seen inFigure `2)...comprises an arbor 31 on which there ismounted a.pair .of spaced cots '32. These cots are made ofa .usual nonmetallic material and are ypress fitted Vor otherwise arranged to be xed to the arbor 31 to rotate therewith. The cots .extend'substantially to the Aends of ,thetarbon in which ends there are provided axial center openings33 which provide centers for mounting the roll on` thetusual standard bufng apparatus. There is mounted on the arbor 31 in the space defined by the innerfends of the .cots 32 a ball bearing '34 v(see Figures 1-and 3) having .an innerand outer race 35 and 36, theinner race 35 being securedto thearbor for rotation therewith. The roll 111 through this `ball bearing 34 is attached .to the saddle-in a manner to be hereinafter described. In accordance with the invention the .saddle 26 ismadein two parts, :a front portion 37 and a back portion38, to be hereinafter referred to as front andfback saddles. The frontfsaddle 37 has an upstandingprojection ,39 vextending vfrom the upper side, whichis provided with a screw threadedfopening 40 therethrough in `which there is adjustablyreceived thestirrup adjusting screw `41 having a slotted head'42 and neck portion 43. The frontend portion ofthe -saddle is enlarged as Vat 44, in which there is formed a recess 45-having side walls 46. The bearing -34 is received in said recess 45, and a llat spring 47 secured in position by a screw 48 extends to engage with the outer race '36 so as to resiliently holdfthe same in frictional engagement with the'walls of said recess to prevent rotation of said-race. Thus, the arbor 31 and inner `race S15-rotate relative to the outer race and materially reduce `friction in that the circumferential `travel of 'the inner'race is much less than would be the condition were the cot to rotate with the outer race 36in the usual Aprior art practice. The other end portion of the saddle 37 is provided with a longitudinal slot 49 therethrough, the walls of which are tapered as at S6.

The back saddle 38 (see Figure 4) is preferably a metal stamping which is made channel shape in cross section providing a top wall 51 in which a longitudinal slot 52 is provided. The marginal edges of the side walls 53 (see Figure 6) are turned inwardly providing lips 54 which frictionally engage in corresponding grooves in a bearing block 55 which is frictionally held between the walls 53 at one end of the saddle. A bearing block 56 `is secured in a similar manner at the other end portion of the saddle and has a hook-like formation 57 provided with an arcuate bearing surface 58. A fulcrum member 59 having an arcuate recess or ball socket 6) is adjustably secured on the side 51 as by means of a screw 61 extending through the slot 52 and into screw threaded engagement with the member 59. Thus, the fulcrum S9 may be adjusted as to the spacing between the same and the said bearing blocks 55 and 56. The bearing blocks may be made of any suitable material, as for example, a Teflon material in which there has been incorporated ground glass particles as described in patent application of Robert Rulon-Miller, Serial No. 306,845, now abandoned.

The back saddle 38 is positioned for the bearing 58 to engage the neck portion 62 of the top roll 15 and to extend therefrom for the bearing 55 to lie on the neck portion 63 of the top roll 13. The front Saddle 37 yis provided with a semi-spherical bearing or ball portion 64 which is adjustably secured in position by a llister head screw 65 which projects through the slot 49 to screw thread through the bearing 64 and clamp the same in position. The bearing 64 is engaged in the recess 60 and swivelly supports the saddle 37 to hold the roll 11 in operative position on the roll 12. Thus, the roll 11 is selfaligning, and the fulcrum of the saddle may be adjusted lengthwise thereof to correspond to the adjustable spacing between rolls.

The stirrup 27, as best seen in Figure 5, is a sheet meta stamping having a slot 66 at its lower end through which the weight lever 29 extends. The upper end portion is provided with a substantially circular opening 67 therethrough in the upper wall portion of which is formed an arcuate recess 68 to engage the neck 43 of the stirrup adjusting screw 41. A second and larger arcuate recess 69 is formed at the lower wall portion of opening 67 opposite to recess 68 for a purpose to appear hereinafter. In attaching the stirrup to the saddle 37 (see Figures 10, 11, and 12), the opening 67 is passed over the rear portion of the saddle which is in cross section of a size slightly less than the opening 67. The stirrup is moved along the saddle to adjacent the projection 39 which blocks further advance of the stirrup (see Figure The stirrup is now turned 180 degrees so as to position the recess 69 opposite to the projection (see Figure 11). The recess 69 is made slightly larger than the projection, and the stirrup may now be moved past the projection and thereafter turned 180 degrees to position recess 68 to engage the neck 43 (see Figure 12) and be suspended therefrom.

From the above description and referring to Figure l, it kwill be apparent that the back saddle 38 is hooked Iabout the neck portion of the rear top roll and thus held in operative position against any forward movement thereof. It will also be apparent that the front saddle 37 is connected to the back saddle 38 by a ball and socket connection preventing forward motion of the front roll and providing a universal connection for aligning the roll 11 which is carried by the front saddle. Thus, the usual front cap bar bearings which frequently require replacement because of wear are eliminated in the above construction.

In Figures 13 and 14 the invention is shown applied to the Roth type long draft system. As shown in Figure 13, the lower apron 70 runs over the bottom roll 14 and around a nose or bar 71 and is tensionedby the roll 72 which" is held in operative position by a sheet metal bracket 73 pivotally supported on the rod 74. The bar 71 extends the length of the machine and is held stationary. An upper apron 75 runs over the top roll 13 and around a nose or bar 76. There is a bar 76 for each spinning unit, and it is carried by a bracket or cradle having sides 77 (see Figure 14) which have an arcuate recess 78 which engages against the shaft of the top roll 13. The distance between the bar 76 and the recess 78 is such as to tension the apron 75, which tension in turn holds the sides 77 in engagement with the shaft of the top roll 13 although permitting a swinging movement about the center of the top roll 13 to and from the bar 71. There is mounted on the bar 76 a generally S-shaped member 79 which projects upwardly in the space dened between the cots of the roll 13. In the present instance the bearing block 55 is omitted on the saddle 38', and the saddle is extended to 'engage the member 79 on which the weight applied on the saddle 33 is transmitted.

The back saddle 38 is provided with a partial ball shaped socket 80 which is intersected by a longitudinal slot 81. The front saddle 37' has a fulcrum member 82 of semi-sphen'cal form which is adjustably secured in position as by means of a screw 83. The member 82 is also intersected by a slot 84 and is received in the socket 80 and provides a ball and socket connection between the saddles. The front saddle has a slot 85 therethrough which is in line with slots 81 and 84. In the present instance the stirrup 86 extends through the said slots and is pivotally suspended as at 87 by the front saddle`37 and hangs therefrom vto extend between the middle and back pairs of rolls. The lower end of the stirrup 86 is provided with an adjustable hook 88 which engages the weight lever 29. The remaining portions of the structure are substantially similar to that previously described.

The invention further contemplates the provision of anti-friction gudgeons for the top rolls 13 and 15. To this end cup-shaped gudgeons 90 made of a Teflon material previously described are provided. The gudgeons 90 (Figure 7) are received by the trunnions 91 of the roll to rotate thereon and have an inner flange 92 which snaps into a recess 93 in the end of the roll which has a restricted opening thereto. The gudgeons 90 as shown have an intermediate flange 94 which is grooved as at 95 and in which groove the side walls of unit 17 are engaged.

In some instances the roll 13 may comprise a steel arbor 96 (see Figures 8 and 9) on which cots 97 made of a cork or other suitable material are mounted in a usual way. The ends of the arbor 96 are reduced and are provided with an annular ridge or flange 96. A cup-shaped gudgeon 98 also made of a Teflon material has an inner annular groove 99 and is rotatably received on the reduced ends of the arbor with the annular groove 99 engaging with the ange 96 to rotatably lock the bearing in position. The roll 15 is likewise provided with gudgeons 98 similarly held to the arbor of said roll.

The gudgeons will remain stationary in the cap bars, and the roll arbor will rotate within the gudgeons. The gudgeons may have an outer cylindrical surface which by reason of its greater friction in the cap bars will remain stationary with relation to the cap bars, while the arbor having a smaller diameter and therefore less friction will rotate in the gudgeons. However, in some cases the gudgeons may have a non-circular outer surface, such for instance as the hexagonal outer surface 100 shown in Figure 15 adjacent Figure 7, in order that their flat sides may engage the cap bars and positively prevent relative rotation of the gudgeons with reference to the cap bars. An advantage is obtained by this non-rotative relation of the gudgeons in that lint will not as readily be picked up by the non-rotating gudgeons as in the case where the gudgeons rotate and would permit of lint wrapping about the gudgeons.

We claim:

1. In a spinning, roving, and like machines, front rolls including top and bottom rolls, pairs of rolls back of the front rolls including top and bottom rolls in each pair, guides for the ends of top rolls back of the front top roll to positively maintain their alignment, the said front top roll having an arbor and a pair of cots on said arbor spaced from each other, holding means for said front top roll arbor engaging the same only in space between said cots, and means for positioning said holding means from a positively guided top roll back of the front top roll.

2. In a spinning, roving and like machines as in claim 1, wherein the holding means comprises a bearing for rotatably engaging the arbor.

3. In a spinning, roving and like machines as in claim 1, wherein the positioning means comprises two parts with a swivel relation between them.

4. In a spinning, roving and like machines as in claim l, wherein the holding means comprises a bearing for rotatably engaging the arbor and said positioning means comprises two parts with a swivel relation between them.

5. In a spinning, roving, and like machines, front rolls including top and bottom rolls, at least two pairs of rolls back of the front rolls including top and bottom rolls in each pair, guides for the ends of all top rolls back of the front rolls to positively maintain their alignment, the said front top roll having an arbor and a pair of cots on said arbor spaced from each other, holding means for said front top roll arbor engaging the same only in the space between said cots, and means for positioning said holding means from a top roll back of the front top roll` 6. In a spinning, roving, and like machines, front rolls including top and bottom rolls, a plurality of pairs of rolls back of the front rolls including top and bottom rolls in each pair, guides for the ends of all the top rolls back of the front rolls to positively maintain their alignment, the said front top roll having an arbor and a pair of cots on said arbor spaced from each other, holding means engaging said front top roll arbor only in the space between said cots whereby said front top roll may align itself with its bottom roll without interference from said back rolls, means to apply pressure on said rolls comprising a two part saddle, a back part engaging an arbor of a back top roll and extending forwardly and a front part engaging said holding means and extending rearwardly into over-lapping relation with the back part.

7. In a spinning, roving and like machines, as in Claim 6, wherein there is a ball and socket connection between said saddle parts whereby the front part may pvotally move to assist in alignment of the top front rol] with its bottom'roll without any roll back of it interfering with such alignment.

8. In a spinning, roving, and like machines as set forth in claim 7, wherein said back saddle is centrally positioned of said rolls back of the front rolls which are guided at their ends.

9. In a spinning, roving, and like machines, front rolls including top and bottom rolls, pairs of rolls back of the front rolls including a middle top roll and a back top roll, guides for the ends of the middle top roll and back top roll, the said front top roll having an arbor and pairs of cots on said arbor spaced from each other, a bearing for rotatably engaging and holding said front top roll arbor only in the space between said cots, means to apply pressure on said rolls comprising a two-part saddle, a back part engaging the back top roll arbors and extending forwardly and a front part engaging the rotary bearing for the front top roll and extending rearwardly into over-lapping relation with the back part and a ball and socket engagement between said saddle parts whereby the front part may pivotally move to assist in alignment of the top front roll with its bottom roll without interference from any back roll,

l0. In a spinning, roving, and like machines as set forth in claim 9, wherein said back saddle also engages the arbor of the middle top roll and means for centrally positioning said saddle on said middle top and back top rolls which are guided at their ends.

References Cited in the file of this patent UNITED STATES PATENTS 783,072 Prest Feb. 2l, 1905 2,203,419 Repass et al June 4, 1940 2,208,803 Morton July 23, 1940 2,224,105 Repass Dec. 3, 1940 2,246,474 Stahlecker June 17, 1941 2,353,338 I-Iess July 11, 1944 2,565,228 Gwaltney et al Aug. 21, 1951 2,581,240 Day et al Jan. 1, 1952 2,596,334 4 Hanson May 13, 1952 2,657,434 Tarbox et al Nov. 3, 1953

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