US2587758A - Twisting spindle - Google Patents

Description

3 Sheets-Sheet l March 4, 1952 J. L. PELLAT-FINET Er AL TWISTING SPINDLE Filed Jan. 18, 1949 IlllllIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII FIG. f

March 4, 1952 .1. L. PELLAT-FINET Er Al. 2,587,758

TWISTING SPINDLE 3 Sheets-Sheet 2 Filed Jan. 18, 1949 FIG. 4

l? Lad 1w VGN-roles March 4, 1952 TWISTING SPINDLE 5 Sheets-Sheet I5 Filed Jan. 18, 1.949

Patented Mar. 4, 1952 'rWIs'rING SPINDLE Jean Louis Pellat-Finet andjMarcel Rilet, Lyon, France, assignors to R. 0. B. E. SA, Geneva,

Switzerland, a firm Application January 18, 1949, Serial o. 71,448 Y* In France May 14, 1948 This invention relates to a twisting spindle 'comprising a hollow central shaft and a support for the supply of the thread.

The spindle according to the invention consists of: two sleeves concentric with the hollow shaft and provided with cylindrical shoulders having inclined axes with respect to the axis of Vthe shaft, one of the sleeves being in rigid connection with the support of the thread; two anlnular members rotatably mounted on the said cylindrical shoulders and connecting members capable of maintaining the two annularmembers in two parallel planes; the wholearrangement being such that when one of the sleeves is kept fixed the other one will also be kept fixed, the thread support being thus maintained fixed,

" and the twist of the thread being double.

The accompanying drawings illustrate by way of example two forms of construction according t the invention.

VFigure 1 is an axial section of the first form of construction of a spindle taken along the line I-I inFigure 2;

Figure 2 is a transverse section taken along the line II--II in Figure 1;

Figure 3 is a longitudinal section taken along the line III-III in Figure 2;

Figure 4 is an axial section of the second form of construction of the spindle taken along the line IV-IV in Figure 6;

Figure 5 is a transverse section taken along the line V-V in Figure 4, and

Figure 6 is a transverse section taken along the line VI-VI in Figure 4.

Referring to the rst form of construction, I

is a vstationary frame or rail supporting the spindle, 2 is a shaft provided with a bore 3 and rotatably mounted on the said frame through the intermediary of two ball-bearings 4. A pulley 5 serves for the rotation of the shaft 2, the latter rotating a casing 6. A sleeve or the like I supports the supply of the thread which is carried by a spool 8. The thread may be carried by a bobbin or in the form of a cheese.- The sleeve I is supported by the shaft 2 through the `intermediary of a ball-bearing I0; this sleeve further carries a cup-shaped member 9.

The sleeve 1 and consequently also the spool 8 and the cup-shaped member 9 are fixed to a sleeve Il, the latter being formedr with a cylindrical lower extension I2, the geometricall -axis AI3 of which is inclined relatively to the axis of the shaft 2. V5 on the sleeve extension I2 and on the outer ring of the said bearing there is mounted an annular A ball-bearing I4 is mounted 6 Claims. (Cl. 57-58) Vmember I5, the latter thus being able to turn around the inclined -axis I3.

The spindle rail I supports a sleeve I6 which is fixed thereto and is formed with an upper cylindrical extension I'I, the geometrical axis I8 of which is parallel to the axis I3. On the sleeve extension I'I there is mounted a ballbearing I9 on the outer ring of which there is mounted an annular member 20 which is consequently compelled to turn around the axis I8.

The members I5 and 20. are coupled by pins -2I,.2Ia, 2Ib and 2Ic capable of sliding in holes 22, 22a, 22h and 22o provided in the casing 6. Any suitable number of pins may be used four being shown. The ends 23 of the pins are conically shaped and engage in recesses 24 provided in the annular members I5 and 20.

The bobbin holder 'I is provided at its upper part with a ferrule 26; a wire yer 2'I is rotatably mounted on the spindle in order to facilitate the lifting of the thread when the spool 8 is unwound. Packings 29 and 39 effect la tight joint for the lubricant and a nut 3| keeps the ballbearingsin position.

A lid 32 forming a baille prevents the lubricant j from escaping from the casing I which is closed at its upper end by a cover 34. The latter is provided with a flange 35 provided with holes 36 and 36a. The thread 31 coming from the spool 8 enters into the upper end of the spindle after having passed through an eyelet in the wire flyer 2'I and leaves the bore 3 in the axis y of theshaft 2, passing through a tubular meml ber 38, an eyelet 39 fand an opening 40 in the casing 6. The thread then passes on to a winding-on spool 4I after having been led through a hole 36 provided in the flange 35.

A second thread v43 (Figure 3) may enter through the lower end of the bore 3 and go to the winding-on spool by passing through a tubular`member-44, an eyelet 45 andan opening 45 in the casing 6 in such a manner that it becomes assembled with the thread coming from the v spool 8. Y

The operation is as follows:

The casing 6 rotating together with the shaft 2 takes along with it the pins 2|, 2Ia, 2lb and 2Ic which in their turn take along the members I5 and 20 each around its own axis I3 and I8 respectively in such a manner that their faces opposite each other, 48 and 49 constantly remain parallel to each other. The parallelism is due to the fact that several points of these two surfaces are compelled to remain at the same distance, the length of the pins remaining con- `reservoir V56 provided in the Lframe 53.

' oiled.

stant. Since the surfaces 48 and 49 remain parallel to each other it also follows that their axes I3 and I8 at right angles thereto also remain constantly parallel to each other.

The axis I8 being fixed in space owing to the fact that the sleeve I6 is fixed to the frame I it followsthat the sleeve II cannot turn Varound the shaft 2 anyv rotation of theisleeve II 4would destroy the parallelism of the axes I3 and i8, which the arrangement of the pins and of the members I5 and 20 renders impossible. The sleeve II being stationary, the bobbin holder 1,v the cupshaped member 9 and the spool 8 which `are fixed thereto remain also stationary during rotation of the spindle. Owing to the immobility of the feeding spool 8, the thread is given a double twist.

The mounting of the pins 2|, 2|a, 2lb and 2|`c in the sockets 2li may be adapted to absorb'the centrifugal forces to which the pins are subjected.

'The bores 22, 22a, 22h and 22e are 'slightly greater than the pins so as to lallowslight radial` displacements of the pins 2 I, 2|a, 2|b and 2|c which-are -due to the inclination of the members I5 and 20, Whilst still ensuring a proper guidance.

Referring tothe second form ofconstruction by a disc' amounted ontheshaftv5| and act-4 ing like a centrifugal turbine.

The turbine l5G receives the oil contained in a The oil is delivered by the turbine 5D through'a duct 58 provided in the frame ES--and provided Yin a sleeve 59 `which carries an inclined ball-bearing-,l It

thus moves inv-an annular space 6| between the shaft 5| and the inner bore of the v`sleeve 59. :A

: portion of the oil descends along the shaft and after having oiled a `ball-bearing 62 it arrives in a-cavity 83 from which it returns-tothe reservoir 56 through ducts 5G and E5. A-rotarydeector intothe annular space 5I ascends along the shaft.

vA certainamountof this oil follows the surface; vof an annular-member 88 in which ther-care. mounted bushes `|59 for the ends ofthe pins'l,

10aand 10b. The oil lubricates these bushes and is then thrown by the rotation into -a cavity 1| of the rotary casing- 12 which is driven by the shaft --'5I. -It then'dropsV intoa-channel 13 provided 4in the upper part offthe frame 53 whence it returns -through the duct 65 to the reservoir 56. lAnother por-tion of the oil is thrown at theoutlet'ofvthe annular space 6| rinto-a cavity 14 provided 4in, a rotary casing 12. The centrifugal force together with ythef inclination` of the walls `of the cavity-14 compels theoilto pass through channels 15, a

and 15b, which lead it to the central part of the orifices 16, 16a and-16b,=through wh-ich pass=pins 10, Nia-and -18b. These orifices are-provided at their upper ,and `lower lends `with'bushes 11 fin which the pins slide, Y`the bushes beinglthereby The upper lbushes .are provided Awith orices 18 Awhich allow the .exces'sofffoil V`to be thrown intothe `upper cavity 19 of the rotary casing-12 to escape. Owing to the centrifugal force `this oil' is :concentrated along the vertical walls'e of the casing 12 and is lrotatablyItalien along after having lubricated the upper -bushes ofthe needles.

This turbine vrotates inlacavity 52 provided atthe lower end `of the frame 53. At its lower end the cavity 52 is closed by 4a member 52 and a stopper 55.

183," which collects the rotatingk oil and guides the oil toward a channel 84 provided in the sleeve 8 I. The bafe 82 is symmetrical so as to act irrsepective of the rotation of the casing. The channel 8d-'leads the oil to the proximity of the upper vpart of the shaft 5|,so as to lubricate the bearings 85 and 88 supporting the upper sleeve 8|.

Thelexcess'o-il-then drops alongthe shaft 5| into an annular space 81 between the sleeve 8| and the shaft 5I and penetrates into the cavity S8 provided on the upper surface of the casing 12. From this point it is led by channels 89, 89a and orices 8B and 96a to the lower part 1I of the casing 12, thendroppirig into the channel 13 and `returning through the channel 65 to the reservoir The circulation is continuous during the rotation of the spindle and is automatically-regulated since the outputof the turbine is afunc'tion of the speed and the power consumed is very small.

The orifices 90, 98' provided inthe 'casing 12 may serveto balance the casing by compensating for the outlet opening 9| of .the thread.

IThe maximum level of the oil in the reservoir is such that the oil cannot'get out through the upperpart 92 of the ballebearing 93. A rotary deflector Sli and a iixedone 95 prevent the escape of oil particles.

Grooves 96 and 91 provided in the upper opening of the frame and 98' provided in the lower portion of the casing likewiser prevent the escape of oil"and`en'sure a tight joint without introducing detrimental frictions. A rotary conical deectorBS prevents'the thrown-off oil from escaping at the upper part'of its'trajectory.

Moreover, the spindle comprises a regulating Vanddamplng device which facilitates the mounting and compensates for the Wear of the pins'.

Forthis purpose the bearings 85 and` 86 are slidingly mounted on the shaft 5|. They are pressed v,downwards b-y a spring I' 'rotating with 'the 'shaft' 5I and bearing on a nut IGI screwed on this D. ported on the upper part of the pins 10, 18a-and 10b. The resilient pressure. provided by the spring il! Yfacilitates the regulationtaking up theplay dueto the Wear of the bushes and pins. It is to be understood that the ball-bearings 85 and 86 may be replaced by a single bea-ring.

The .spring- IUS-is placed in a cup |81vt`urni-ng :therewith Between the spring |80 andthe nut I8| `there is placed airubber lring |988 which -is A.gripped.between.two washers'lUSfand H0. VThis ringru-bs against the interiorvwall of the cup |81 thereby braking the vertical oscillations of'the cup which it clamps.

What We claimfis 1V l. A twisting spindle comprising a hollow -centralshaftfor the inwardp'assagevof the thread, lmeansfor 'rotating said shaft, a fixed tubular member anda rotatable onexarrangedconcentii- 4cally with 'said-'hollow'shaft in'space'd relation withpne another, a support for va vsupply-fof thread secured -to f saidv rotatable tubularr member. 'leach of said tubular members being formed with a cylindrical seat each having an inclined axis with respect to the axis of said shaft and the axes of said cylindrical seats being parallel, an annular member rotatably mounted on each of said inclined cylindrical seats, and connecting members between said two annular members for constantly holding them in two parallel planes, oblique to the axis of said shaft, whereby the rotatable tubular member is obliged to keep its axis stationary, that is to say to remain stationary as well as the thread support secured to it, the thread being thus given a double twist.

2. In a twisting spindle as claimedsin claim 1, an oil reservoir, a pump driven by said hollow shaft for feeding oil from said reservoir into the parts to be lubricated, duct means through which the oil is conveyed from said pump to said parts,

and means for effecting a tight joint for the oil, without friction between the rotary and the stationary elements of the spindle, saidmeans comprising stationary and rotary deectors.

3. In a twisting spindle as claimed in claim 1, an oil reservoir, a rotary disc driven by said hollow shaft for feeding oil from said reservoir into the parts to be lubricated, and duct means through which the oil is conveyed from said disc to said parts, some portions of said duct means being oblique to the axis of rotation of the spindle.

4. In a twisting spindle as claimed in claim 1, an oil reservoir, a rotary disc driven by said hollow shaft for feeding oil from said reservoir into the parts to be lubricated, duci-l means through which the oil is conveyed from said disc to said parts, some portions of said duct means being oblique to the axis of rotation of the spindle, and a baiiie situated substantially at the top of the hollow shaft within said duct means, for bringing the oil from the periphery of the spindle back towards the shaft thereby to allow centrifugal force to circulate it again.

5. A twisting spindle comprising a hollow central shaft for the inward passage of the thread, means for rotating -said shaft, a fixed tubular member and a rotatable one arranged concentrically with said hollow shaft in spaced relation with one another, a support for a supply of thread secured to said rotatable tubular member, each of said tubular members being formed with a cylindrical seat each having an inclined axis with respect to the axis of said shaft and the axes of said cylindrical seats being parallel an annular member rotatably mounted on each o said cylindrical seats, sockets provided in said annular members, and a set of pins having their ends journalled in said sockets and arranged parallel to the axis of the hollow shaft between said two annular members for constantly holding them in two parallel planes, oblique to the axis of said shaft, whereby the rotatable tubular member is obliged to remain stationary as well as the thread support secured to it, the thread being thus given a double twist.

6. In a twisting spindle as claimed in claim 5, a rotary casing secured to the hollow shaft and bores provided in said casing parallel to the axis of said shaft and in which said pins are slidingly mounted. l

JEAN LOUIS PELLAT-FINET. MARCEL RIFFET.

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

UNITED STATES PATENTS Number Name Date 2,353,104 Winslow July 4, 1944 2,463,636 Meade Mar. 8, 1949

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