US2657524A

US2657524A - Spindle mounting for textile spinning or like machines

Info

Publication number: US2657524A
Application number: US232817A
Authority: US
Inventors: Westall Arthur
Original assignee: TMM Research Ltd
Current assignee: TMM Research Ltd
Priority date: 1950-05-25
Filing date: 1951-06-21
Publication date: 1953-11-03
Anticipated expiration: 1970-11-03
Also published as: GB689471A

Description

Nov. 3,1953

WEsTALL SPINDLE MOUNTING FOR TEXTILE SPINNING 0R LIKE MACHINES Filed June 21, 1951 Patented Nov. 3, 1953 SPINDLE MOUNTING F OR TEXTILE SPIN NING OR LIKE MACHINES Arthur '1. M. M. England Application June Claims priority,

Westall, Accringt Research) on, England, assignor to Limited, Rossendale,

21, 1951, Serial No. 232,817 application Great Britain May 25, 1950 4 Claims. (Cl. 57-135) This invention is concerned with the mounting of spindles of textile spinning, doubling and twisting machines, such spindle mounting being of the type wherein the spindle bolster is resiliently borne in thespindle rail, carrier bracket or the like, so as to be capable of a controlled oscillatory or gyratory movement in relation thereto. Examples of such known type of spindle mounting are disclosed by British Patent Specification No. 329,485 and United States patent specification No. 2,486,730, in which springs are compressed both above and below a spindle rail, respectively between the upper side of said rail and a shoulder on the bolster, and between the underside of said rail and a nut screwing upon the part of the bolster which protrudes downwardly through the spindle rail.

This invention has for its object to provide an improved form of pindle mounting of the aforesaid type, which will enable a spindle to be driven at speeds higher than is customary without developing undue vibration due to the dynamic unbalance of the yarn package or to faulty design or manufacture of the spindle itself. For this purpose a spindle is supported in the spindle rail, carrier bracket or the like by two opposed springs one of which is compressed between the underside of said rail, bracket or the like and an adjustable abutment on the downwardly protruding part of the spindle bolster, whilst the other spring is compressed between a shoulder or other fixed abutment on the upper part of the bolster and a collar which is slidable on the bolster and is arranged to transmit the force of said upper spring equally to a resilient annular packing housed in the spindle rail, carrier bracket or the like and a second adjustable abutment on the bolster.

Said second-mentioned abutment on the bolster may be constituted by a nut screwed thereon, and in a modification a third spring may be introduced between the opposed faces of said collar and said abutment.

Two embodiments of the invention are hereinafter described with reference to the accompanying drawings, in which Fig. 1 is a vertical section of a spindle assembly for that kind of textile spinning machine which is known as an uptwister. Fig. 2 is a similar view to Fig. 1 of a modification.

In Fig. 1 the reference numera1 l indicates the spindle-supporting member which is mounted pivotally by means of a pin l I in the bracket l2, which latter is adapted to be fixed to the machine framing in conventional manner. Said member I!) is apertured at It to receive the bolster H of the spindle assembly. (Said assembly includes an inner bearing tube l5 supporting the spindle blade It by a journal bearing l1 and a footstep bearing bobbin support is which is carried on the blade l5 so that the wharve coincides substantially with the bearing 11.)

The spindle assembly issupported upon the member 10 by means of two opposed springs 20, 2| which are arranged co-axially with the bolster, respectively embracing the latter above and below the member It. The spring 2!] is compressed between a shoulder 22 on the upper part of the bolster I l and a collar 23 which is free to slide on the bolster and the underside of which is of suflicient breadth to enable it to bear downwardly equally upon a resilient packing ring 24 which is located in a recess in the upper side of the member ID, and a nut 25 which is threaded on the bolster. A locknut 26 is provided for securing the nut 25 in position. The spring 2| is compressed between the underside of the member l0 and a nut 21 threaded on the shank of the bolster I4. 28 is a locknut for said nut 21.

The aperture l3 in the member In is of sufiicient diameter to provide ample clearance within it for the

nuts

25 and 26, and the arrangement is such that when the spindle is stationary the assembly will take up a central position in said aperture I3.

In an alternative embodiment (not shown) the spring 2| may seat at its upper end against a resilient packing ring located in a recess in the underside of the member I0. A collar such as that indicated at 23 may also be interposed between the spring and the packing ring.

In the modified embodiment shown in Fig. 2, additional flexibility is achieved by introducing a third spring 30 between the under-face of the collar 23 and the nut 25.

The position of the bolster when the spindle is stationary depends upon the relative stiffness and the relative compression of the springs 20, 2!, which latter condition may be varied by adjusting the settings of the

nuts

25 and 21 on the bolster. If desired one spring may be subjected to a greater degree of compression than the other.

The arrangement in both the aforedescribed embodiments of the invention is such that both radial and axial movements of the spindle assembly are accommodated by the flexibility of the opposed springs. The opposed arrangement of the springs is efiective to absorb vibrations l8, and a combined wharve and which would otherwise be transmitted from the spindle through the bolster to the supporting member ID.

What I claim as my invention and desire to secure by Letters Patent is:

1. A spindle mounting comprising, in combination, a carrier having an opening therein, a spindle supporting bolster disposed to extend substantially vertically through said opening and out of contact with said carrier, and means for resiliently supporting the bolster from the carrier comprising an abutment adjustably secured on a downwardly protruding portion of the bolster, a first spring compressed between the underside of the carrier and said abutment, a fixed abutment on the upper part of the bolsterabove the carrier, a collar surrounding the bolster and. movable longitudinally thereof, a resilient angular packing supported in the carrier and having an upper face exposed to the collar, a second adjustable abutment onthe bolster, and a second compressed spring opposed to the first and bearing at its upper end against the fixed abutment on the bolster and at its lower end upon said collar, the collar being disposed to bear both upon the annular packing and upon the second adjustable abutment on the bolster.

2. A spindle mounting as claimed in claim 1, comprising a third spring introduced between said collar and the abutment against which said collar is arranged to bear.

3. A spindle mounting as claimed in claim 1 wherein at least one of the adjustable abutments is constituted by a nut threaded on the bolster, and comprising means for locking said nut in any desired setting.

4. A spindle mounting as claimed in claim 1, whereinv a third spring is included between the collar and the second adjustable abutment, the springs being of different stiffness, and the adjustable abutments serving through their adjustments to vary the compression of the springs relative to one another.

ARTHUR WESTALL.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 791,436 Browne May 30, 1905 2,486,730 Berg Nov. 1, 1949 FOREIGN PATENTS Number Country Date 521,197 Germany Mar. 19, 1931 326,298 Italy Mar. 21, 1934 401,714 Italy Jan. 29, 1,943