US2044890A - Spinning spindle and method of lubricating same - Google Patents

Description

June 23, 1936. l R. REDDIE SPINNING SPINDLE' AND METHOD 0F LUBRICATING SAME `Filed Aug. 11, r1933 Patented June 2.3.., 1936 l l UNITED4 STATES sPnvNlNG sPmnLE AND METHOD 0F 'Lunrca'rmGsAnm ,my pedine, Knoxville, Tenn.

\ Application August- 11,-1933, Serial No. 684,714

2 claims. (ci. sos-169) This invention relates to spindle bolster assemblies for textile spinning frames, and has for its objects to increase the speed of operation of the spindles, decrease the wear of the parts, and hence the cost for replacement, and decrease the cost of operation of the spindles. It has been proposed heretofore to mount the spindle proper in a bolster having perforatedlateral walls and carried by a suitably supported casing, the spindie having a prolonged bearing in the bolster and a bottom step or bearing, also in the bolster, for the lower end of the spindle. With this assembly `means have been provided for furnishing a sup# ply of cil from a. suitable reservoir from which the oil ows downward around the bolster, and through the perforations to the interior thereof to lubricate the spindle. In some cases it has A been proposed to circulate the oil that has reached the spindle in an upward direction between a portion of the spindle and the bolster until the oil overflows the upper end of the bolster and returns to the reservoir. In no case, however, has oil ever been supplied -to` the bot torn of the bearing of the spindle in an imperforate bolstenand circulated in an upward direction over -the entire bearing portion of the spindle and back to the bottom bearing. Efforts to lubricate the step of the spindle from above by a flow of oil downward between the bolster wall and the spindle have proved highly ineffective, resulting in friction between the lower end speed of operation of spindles, to the end thatv the cost of operation may bereduced," but the resulting friction, wear and overheating of the parts as described above has placed a positive limit on such increase, as well as resulting'in an unnecessary consumption of power inl the operation of the spindles.

One of the primeobjects of the present inven-` tion is to so construct and lubricate the bearings between the spindle and the bolster as to avoid friction, overheating of the parts, and the necessityfor repairs, and at the same time greatly increase the speed over anything heretofore at-' tained, at a less consumption of power.

With this object in view; according to the present invention, oil is caused fto ow upward, rather than downward, to the bearing step in the bolster for `une iower ena of the spmme.' and then circulate upward around the bearing portion of spindle,

the spindle at the top of `the bolster, where the same overflows the bolster within the casing and returns to be again fed upward as before. Preferably, the bearing step in the bolster is in the form of an inverted'cone, and an oil duct leads upward to the bottom' of said cone. Oil is supplied from a suitable reservoir mounted at a proper height, tothe end that the oil may pass downward between the bolster and the casing a point Vwhere it flows outward over the top' of the'bolster and descends around the latter to again be supplied to the duct leading upward to 20 the spindle bearing.

-One formwhich the invention may assume isillustrated in the accompanying drawing, but it is to be expressly understood that su'ch drawing is for the purpose of illustration only and is not designed to dene the limits of the invention,

reference being had to the appended claims( for this purpose. l

In said drawing- Fig. 1 is a perspective view 1 Fig. 2 is'arvertical, central section of the assembly; Fig. 3 is a like view of the lower end of the partsfshowing a modification of the form shown in Fig. l;

Fig. 4 is a horizontal, sectional plan view on the lines H of Fig. 2;'

Fig. 5 is a perspective view of one form of the bolster embodying the present invention.

Referring to said drawing, in which like reference numerals indicate like parts throughout the several views, i indicates, the usual or any suitable frame on which the spindle assembly isv mounted; 2 indicates a supporting casing secured in the frame I, as by means of a nut 3. The spindle l takes bearing in the bolster 5, supported in the casing 2, one form. of the bolster being shown in Fig. 5. As here shown, the bolster ii is cylindrical form and is` provided with a key 6,

entering a corresponding groove on the interior of the casing, whereby revolutionof the bolster is prevented. v

As shown, the interior bore of the bolster is also cylindrical, but it may taper slightly downward with a taper slightly less than that of the A The spindle is provided with the usual or any suitable whirl 'l secured to the spindle at a point above the bolster, while thespindle is provided with an annular shoulder 8, at' a point of a spindle mounted according to the present invention;

Cil

above the bolster and serves to close the top of the casing which casing extends above the top of the bolster. The spindle II is also provided with a second annular'shoulder 8 of the same cuter diameter as the bolster 5, and when the spindle is in position this shoulder rests lightly on the top of the bolster so as to permit a lm of oil to pass over the top of the bolster when the spindle is in operation. As shown, this shoulder 8' is formed by a ring 8 secured to the upper part of the spindle stem 4'. The bearing portion 4' of the spindle is slightly tapered downward, that is, the

portion of the spindle within the bolster, and the bolster is provided with a bearing step 9, which is in the form of an inverted cone. 'I'he lower bearing point 4" of the spindle is also in the form of an inverted cone 4corresponding to the inverted cone 9 forming the bearing step. When the spindle is mounted within the bolster with the lpoint 4" resting in the bearing 9, the bearing below the bearing step 9 of the bolster and may,

as shown in Fig. 2, ow downward to the bottom of the bolster and enter a vertical axial duct I2 leading up to and communicating with the lower apex of the bearing step 9. In a modiedfoi-m (see Fig. 3) the oil flows downward around the bolster 5 to an annular groove I3 formed in the bolster at a point below the bearing step for the spindle, and a duct I4 leads inward from said groove Il and then upward to the apex of the bearing step 9. Preferably the bolster is provided with a plurality of grooves I5 formed in its ex-A terior surface and leading downward for some distance from the upper end of the bolster, as will be readily understood from an inspection of Fig. 5. The top of the reservoir I is closed by the usual or any suitable doier guard I6 hinged v thereto to enable the oil to be supplied to the reservoir. p

Preferably the bolster is made in three parts, consisting of a central seamless steel tube 5', a lower portion 5" oi promet alloy and an upper portion 5"' also of promet alloy. The promet alloy aiords an ideal bearing surface, and the use of the central seamless steel tubing 'connecting these promet alloy parts lessens the co-st of the construction. Cil introduced into the reservoir I0 flows down by gravity around the outside of the bolster and between the bolster. and the interior surface of the casing 2, and, in the construction shown in Fig. 1, flows to the bottom of the bolster and upward through the axial bore I2 to the apex of the conically shaped bearing vstep 9. When the spindle is set in operation, the

oil is forced upward from the bearing step 9 by centrifugal action and continues upward around the tapered spindle to the top of the bolster, and then flows over the top of the bolster within, the

casing and downward through the grooves I5 to be again returned to the bottom of the bolster and 'fed upward by centrifugal action as before..

In its course of travel, the oil forms a constant film between the bearing point 4" of the spindle and the conical'bearing step Q as well as 'a constant nlm of oil between the taper of the spindle The rebe as much as 25 per cent. This increase in speed v is obtained without wear and consequent deterioration of the parts; without overheating of the parts and burning of the oil; and with consumption of less power than has been heretofore required to operate thespindle at the lower rate of speed with the resulting friction, wear and overheating of the parts.

By the present invention, by feeding the oil to the bottom of the bearing step, either as shown in Fig. l or Fig. 3, the oil is circulated in a closed circuit around the bearing portion of the spindle within the bolster and must, of necessity, pass between the bearing step in the bolster and the bearing po-int of the spindle. The result is that all bearing points are elciently lubricated, and constantly kept out of Contact with the bearings i in the bolster by reason of the lm of oil interposed between said points and the bearing and hence, friction, wear and overheating are obviated.

It will be readily recognized by those skilled in the art that various modifications of the inventive idea may be employed without departing from the spirit of the invention, that is, without departing from the idea of supplying the oil to the bottom of the bearing seat in an imperforate bolster and feeding it upward in a closed circuit by means of the revolution of the spindle, and such modications as fall within the terms of the appended 'claims are intended to be covered thereby.

Having thus described the invention what is claimed is:

-1. In a, spindle mounting, the combination of a casing, a bolster with imperforate lateral walls mounted within said casing with its top below the top of the casing and with a passage for oil between the interior of .the casing and the exterior of the bolster and leading from the top of the bolster to the base portion of said bolster, said bolster having a cone shaped bearing in the base portion thereof and a passage leading upward to the bottom of said bearing and connecting to the bottom of said bearing with the oil passage between the bolster and casing, a spindle taking bearing wholly within said bolster, and means supplying oil to the space between said casing and bolster.

2. In a spindle mounting, the combination of a casing, a bolster with imperforate lateral walls mounted within said casing with its top below the top of the casing and with a passage for oil between the interior of the casing and the exterior of the bolster and leading from the top to the base portion of said bolster, said bolster having a cone shaped bearing in the base portion thereof and a passage leading upward to the bottom of said bearing and connecting the bottom of said bearing with the oil passage between the bolster and casing, a spindle taking bearing wholly within said bolster and provided with a shoulder closing the top of said casing and an annular shoulder within the top of said casing` and closely adjacent to the top of the bolster, and means supplying oil to the space between said casing and bolster. ROY REDDIE.

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