US2283963A - Spindle - Google Patents

Description

atente SPLE Connecticut application May 11, 1940, serial No. esista (ci. sos- 154) 11 Clas.

This invention relates to a spindle of the character used in the textile industry for spinning, twisting and the like; and. the invention has for one of its objects to minimize vibration or oscillation of a/high speed spindle which may carry an out-of-balance load.

Another object of the invention is to provide a' centering and gyrating motion-retarding ini-luence in the rockable joint itself such, for instance, as by the shape thereof.

Another object of the invention is to prevent crystallization of relatively moving parts in a modified ball and socket type of bolster.

Another object of the invention is toprovide means for dampening the relative motion of the spindle bolster 'and the casing in which it is mounted.

A more specic object of this invention is to dampen this relative motion above-mentioned by means of utilizing the oil in the spindle casing to form a cushion forthis purpose,

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawing:

Fig. 1 is a sectional view of the spindle and its mounting upon the rail; blFig. 2 is a-sectional view of the bolsterv assem Fig. 3 is a sectional view through the lower end of the bolster assembly;

Fig. 4 is a side elevation of the bolster assembly;

. Fig. 5 is a sectional bolster assembly;

Fig. 6 is a side elevation of the lower step bearview of the sleeve of the ing.

In the use of spindles at the present time it is desirable to attain high-speed operation,'whch makes it necessary to provide means for accommodating varying loads which may at times be somewhat unbalanced and which may chatter in being `brought up to speed. Such occurrences by whichthese advantageous results may be accomplished:

With reference to the drawing, lll designates a tubular casing having a standard steel tubular shell with a suitable bottom il iixedtherein by i brazing., The casing is shouldered as at l2 between its ends to engage the base |35 which is brazed to the casing and rests upon the spindle rail i4. The nut I5 onthe thread I6 ofthis casing l acting on the under side of the rail through the washer i5' draws the casing downwardly, binding -it and the base against the rail. This casing has a suitable bore or well i1 for the reception of the bolster assembly a-nd is provided with internal threads i8 at its upper end.

'I'he bolster assembly (see Fig. 2) consists of the bolster tube 26 which has a tight-fitting step bearing 2l of bronze forced into its lower end, said bearing having oil channel 22 extending axially'and a cross channel 23 extending laterally thereof and joining with the bore 26 which receives and provides the bearing for one end of the spindle blade 25. At its upper end, the bolster 2 is brazed to the member 26 which has an egg shape or bulbous outer surface 21 and is cut out as at 2B to receive the outer raceway 29 of 21 is not a true spherical surface, but rather is a surface of a body having an axis longer in thel direction of the axial extent of the blade. and

bolster than laterally thereof; and While the curvature of the socket seat and the bulbous surface 21 are not critical, the arrangement is such that relative movement of the bulbous surface in its seat will cause the bolster to rise in its seat means as the bolster is rocked. Thus, tension will be placed upon the spring 36 which tends to hold the bulbous surface of the bolster in its seat.

The member 32 is reduced in diameter as at 36 and is provided with a threaded outer surface to engage the thread I8 of the lcasing. Ill. However, in assembly, the member 32 is positloned over the end of the bolster 20 so as to engage the egg-shaped surface 21,l and then there is assembled upon vthis bolster a washer 35 with spring'36 engaging this washer, while another washer 31 is held fixedly in place by the small spring wire 38 seated in a suitable groove 39 in the outer surface of the bolster with spring 36 scribed.

With the bolster, spring and sleeve thus assembled, I insert this assembly into the casing I0 and screw the threads 34 of the member 32 into the threads I8 of the casing which completes the assembly of the spindle bearing.

The sleeve 40 is of such relative size that a small passage is provided at 44 and also at 45 so that there will be an oil film at both of these points along the sleeve, it being readily understood that there will be oil provided in the casing up to substantially the level of the lower edge of the whorl which is designated generally 46 and is positioned on the taper 41 of the blade in a usual manner. The center of the drive for the whirl will be just below the center of gyration or movement of the egg-shaped bulbous surface 21 and socket 33 so that should oscillations occur due to an unbalanced load, they will occur about a center point just above the center of the belt drivev of the whorl. The tendency will be for the bolster with its spindle supported at the ball bearings 30 and step bearings 2| to move in the cup seat, and which by reason of the shape of the seat will tend to lift the bolster from the seat so as to compress the spring drawing these two surfaces together and increase the friction thus exerted on this seat and by reason of the tension of the spring and friction restrict gyration of the spindle. Thus bolster movement will be retarded by the spring itself, althoughresililently permitted, as any movement of the bolster will tend to compress the spring slightly. This compression action of the spring together with the vibration of the running of the machine will bringthe spindle back to central position in the casing when any such overbalance load such as causes motion is relieved.

Further, this tendency of movement in the.

the retarding influence of the shape of the seat,

the friction of the surfaces themselves and the spring, I provide a cushion of the liquid itself ticular material, and while it may be of a metal, is preferably and desirably formed of some nonmetallic material such, for instance, as some of the phenolic or resinate condensation products, as by such formation and selection of this material I eliminate contact oxidation between ,the bulbous and socket members which might occur if these were metal-to-metal faces moving one upon the other, which I have known to often occur due to the ainity which one metal has for the other land the static charges which may be set up to be present under such operating conditions. An example of a suitable material is Bakelite or Micarta, although other similar materials of these non-metallic types may of course be utilized.

I nd that these non-metallic materials also have a sufficient resilient action so that certain cushioning shocks and even gyratory movements are absorbed by this non-metallic material by reason of its material alone.

The foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to al1 the mechanical changes to which the device is susceptible. l

1. In a spindle, a blade, a bolster for supporting said blade, said. bolster being provided with a bulbous, substantially longitudinally-elongated surface, a casing having fixed thereto a correspondingly-shaped socket to receive said surface which assists in retarding motion of a gyrating character in the spindle.

'I'he motion of the spindle will cause oil to circulate by passing upwardlythrough the channel 22 inwardly to the step bearing as at 23, then upwardly through this bearing and along the spindle until it reaches oil hole 48 where it will then flow outwardly down along the spring and over the cushion sleeve to provide a lm on either side of the cushion sleeve and thus back into the reservoir 49. This action of the spindle also causes suflicient oil to move upwardly to the ball bearing by reason of clearance 50, but not suflicient to cause overflowing of the oil from the ball bearing to get onto the whirl and be thrown thereby. The'space 5l below the ball bearing will retard this flow.

The member 32 is not necessarily of any par- 75 for rockably supporting the bolster in suspended position inthe casing, and resilient means for drawing said bulbous surface into said socket so that the axes of said bulbous surface and socket will tend to align.

2. In a spindle, a blade, a bolster for supporting said blade, said bolster being provided with a. bulbous, substantially longitudinally-elongated surface, a casing having fixed thereto a correspondingly-shaped socket to receive said surface for rockably supporting the bolster in suspended position in the casing, resilient means for drawing said bulbous surface into said socket so that the axes of said bulbous surface and socket will tend to align, and cushioning means carried by said bolster and spaced from said casing so as to be entirely free thereof and spaced from said rockable mount and free of the action of said resilientmeans and movable o'n said bolster for dampening any rocking motion of the bolster in its socket.

3. In a spindle, an assembly unit comprising a bolster having a bulbous surface, a socket having a seat for said surface threaded for attachment to a casing, resilient means for urging said bulbous surface and seat together, and a sleeve carried by said bolster at the lower end thereof and Ifree of the action of said resilient. means and of the action of said resilient means and spaced from said rockable mount and movable for dampening any rocking motion ofthe bolster in its socket.

5. A spindle .comprising a blade, a bolster for abutment thereon, a compression spring extend-- ing between said shoulder and abutment for resiliently drawing said bulbous surface into said recess, and a sleeve positioned about said bolster and in spaced relation therewith and at a location on the opposite side of said shoulderA from said spring and free of the action thereof and movable for dampening any rocking motion of the bolster in its socket.

6. A spindle comprising a blade, a bolster for supporting said blade and provided at one end portion thereof with a bulbous bearing surface and a shoulder spaced from said bulbous bearing surface, a casing for receiving said bolster and having at the upper end thereof a-socket threadingly secured thereto providing ari-abutment extending inwardly in said casing, said socket havinga recess thereon of a shape corresponding to said bulbous surface for receiving the same for rcckably supporting the bolster in suspended position in the casing a compression spring extending between said shoulder and abutment for resiliently drawing said bulbous surface lin' said recess, and a sleeve positioned'about said bolster and in spaced relation therewith and'positioned thereon at a location on the opposite side of said shoulder from said spring and movable relative to said bolster and shoulder and free of the action of said spring for dampenng any rocking motion of the bolster in its socket.

'1.` A spindle comprising a blade, a bolster for supporting said blade and provided at one end portion thereof with a bulbous bearing surface, a casing for receiving said bolster and provided at the upper end thereof with a socket having a cupped recess of a shape corresponding to said bulbous bearing surface for receiving the saine for rockably supporting the bolster in suspended position in the casing, washers secured, in spaced relation with respect to each other, to the lower portion of said bolster, a coil spring extending between' said socket and the innermost washer f for resiliently drawingsaid bulbous surface in said recess, a sleeve about said bolster and positioned in thev space between said washers and ,5,- thereabout.

8. In a spindle, an assembly, unit comprising a bolster having a bulbous surface, a socket havins a cupped recess thereon of a shape to correspend to said bulbous surfacel for receiving the same therein, awasher secured to said bolster at a location spaced from said bulbous surface,

a spring about said bolster and-positioned between and with the ends thereof abutting said socket'and said lwasher for urging said bulbous surface into said recess, a sleeve about said bolster positioned thereon on the opposite side` ofv said washer from said spring and free of the action thereof and in spaced relation with the surface of said bolster providing a' space therebetween, and a second washer secured to the end of said bolster for securing said sleeve to said bolster and between said washer.

9.*In a spindle, anl assembly unit comprising a bolster having a bulbous surface, a socketv having a cupped recess thereon of a shape to corl respond to said bulbous surface for receiving the same therein, a washer secured to said bolster/at` a location spaced from said bulbous surface, a

spring about said bolster positioned between and with the ends thereof abutting said socket and said washer for urging said bulbous surface into said recess, a sleeve about the lower end of said bolster positioned thereon on the opposite side of said` washer from said spring and free of the action thereof and in spaced relation with the surface of said bolster providing a space therebetween, and a second washer secured to the end of said bolster for securing said sleeve vto said bolster and between said washers, said socket having a threaded portion thereon for securing said assembly unit to a casing.

10. In a spindle, an assembly unit comprisingv a bolster having a bulbous surface, a non-metal socket having a cupped recess thereon of a shape to correspond to said bulbous surface for receiving the same therein, a washer secured to said bolster at a location spaced from said bulbous surface, a spring about said bolster positioned between and with the ends thereof abutting said socket and said washer for urging said bulbous surface into said recess, a sleeve about the lower. end of said bolster positioned thereon on the opposite side of said washer from said spring and in spaced relation with the surface of said bolster providing a space therebetween, and a second washer secured to the end of said bolster for securing said sleeve to Asaid bolster and between said washers.

11-. In a spindle, Aa blade, a bolster for supporting said blade, said bolster being provided with a bulbous surface and a shoulder thereon at a location spaced from said surface, a casing having a correspondingly shaped socket fixed thereto toqreceive said bulbous surface for rockably of said spring to retard the rocking action' of said bolster.

ALBERT E. WINSLOW.

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