US2799132A

US2799132A - Textile spindle brake device

Info

Publication number: US2799132A
Application number: US619725A
Authority: US
Inventors: Andrews Allen Raymond
Original assignee: Standard Screw Co
Current assignee: Stanadyne LLC
Priority date: 1956-11-01
Filing date: 1956-11-01
Publication date: 1957-07-16
Anticipated expiration: 1974-07-16

Description

July 16, 1957 A. R. ANDREWS TEXTILE SPINDLE BRAKE DEVICE Filed Nov. l, 1956 NVENTOR.

ALLEN RAYMOND ANDREWS 7 l 6 TTRNEYS iinited gratos;

man on@ 2,799,132 Patented. July 16, 1957 2,799,132 TEXTILE SPINDLE BRAKE DEWGE Application November 1, 1956, Serial No. 619,725,

- Claims. (Cl. .S7- 38) This invention relates generally to textile spinning or twisting apparatus and more particularly to an proved form of brake device for braking application to a spindle in apparatus of this sort. v

Briefly described, the improved spindle brakey device of the present invention isV characterized by a brake lever arranged to rest in fulcrumed relation at the spi die base so as to carry a friction. shoe adjacent one end thereof for braking application at a rotational surface ofy the spindle, the brake lever having a handle portion at its other end on which a leaf spring is mounted to extend in abutment with the spindle base in a manner serving to bias the brake lever to a normal position, maintaining the friction shoe thereon inactive, and further serving to retain the fsullcrummed brake lever resting on the spiridle base, while at4 the same time allowing' it to be rocked for braking application of the friction shoe, and also permitting removal of the brake lever readily from the spindle base simply by lifting it therefrom whenever desired.

These and other features of the present invention are described in further detail below in connection with the accompanyingV drawings, in` which:

Fig. l is a vertical sectionA detail showing a brake device embodying the present invention arranged on a textile spindle;

Fig. 2 is a side elevation of the brake device and spin,- dle as seen from the right in Fig. 1 and Fig- 3 is a vertical section detail .correspond-.ing gen,- erall-y to Fig. l but showing a modified arrangement of the brake device.

In Figsl and 2 the. spindle. brake embodiment of the present invention shown therein is indicated generally by the reference numeral and the spindle on which it is arranged by the reference numeral 12. The spindle 12 comprises a spindle blade 14 tted from its upper end with a filler sleeve section 1.6 for receiving a bobbin or other yarn carrier thereon. A whorl 1,8 is also fixed to the spindle blade 14 above a fixed base 20 in which the spindle blade 14 is rotatably carried. The illustrated spindle base is of the form disclosed in copending applications Serial No. 447,977, filed August 5, 1954, now Patent No. 2,781,629, and Serial No. 493,274, led March 9, 1955, now Patent No. 2,781,628, in which complementary housing halves are assembled lengthwise about the lower spindle blade portion to form a composite base therefor, reference being made to the above noted copending applications for further details of this spindle base arrangement which forms no part of the present invention. The exterior surface of the spindle base 20 is threaded to engage a clamping collar 22 by which the spindle 10 may be secured on a spindle rail 24 in the usual manner.

The spindle base 20 is further arranged according to the present invention with bracket means 26 at the portion thereof overlying the spindle rail 24 and disposed just below the spindle whorl 1S. The bracket means 26 arranged on the spindle base 20 preferably comprises a pai-r of spaced bracket arms which extend upwardly above the lower end of the whorl 18 and are spaced outwardly thereofA with vertical slots 23 opening upwardlyl at the upper bracketl arm ends. In addition, a downwardly facing horizontal shoulder 30. is formed on the spindley base Ztl adjacent the lower end of they bracket means 26,. When the spindle base 20. has a composite form as disclosedI in the above notedV copending applications, oney of the parirk of bracket arms forming the bracket means 26 may be formed on each of the complementary halves forming, the spindle base 20, and the horizontal shoulder 30 mayl likewise have components thereof formed on each complementary spindle base half so as to extend between the lower ends of the bracket arms forming the bracket means 26 when the spindle base 2th is assembled.

The spindle brake 10 provided according to thepresent invention comprises a brake. lever 32 fitted with a fulcrum pin 3.4 by which it is arranged to rest in the vertical slots 28 in fulcrumed relation at the upper end of the bracket means 26A.. lOne end of this fulcrumed brake lever 32 is formed to carry a friction shoe 356 disposed for braking applicationat a rotational surface of the spindle 12, such4 as a flange 1,8. at the lower end of whOrl 1 8. The other end ofthe brake lever 32 formed as -a handle portion 384 dependingv from the braelget means 2 6.: with a. loaf spring 4.0 mounted thereon, to. ox,- tend upward-1y and inwardly in abutment with die sido of ille spindle base 20 below the horizontal shoulder 30 thereon; i f

The leaf spring 40 is arranged in this manner so that it biases the brake lever 32 to a normal position at which the handle portion 38 thereof is rocked outwardly to canse the friction shoe 36 to bear laterally ata top surface of the spindle base 2). in inactive relation with respect to. the whorl ange 18', but disposed for braking application thereto upon inward rocking of the handle portion 3.8. By this arrangement, the spindle brake 16 is normally retained on the spindle base 2,( ),i n1 an inactive position ai which il is always ready for goil-teologi vbraking vapplication to the spindle 12 wheneyer needed, and at which it is always readily removable from the spindle 12, whenever desired, simply by manual retraction of the, leaf spring 40 toward the handle portion 38 sufficiently to clear the horizontal spindle base shoulder 3,0, whereupon the spindle brake may be simply lifted fl'rQm the Vertical slots 28 in the spindle base bracket means. 2.6, Itwill also be noted that the spindle brake 10 may be just as readily replaced on the spindle baseA 20,

The modified embodiment of tho present invention shown in. Fig- 3 of the drawingsy comprises d. spindle brake indicated gener-ally by tlio reference numeral 15,0. arranged or a teil-.fil spindle 52 Comprising. g. spindle olado 54. and a whorl 56 xed thereon above a spindle base 58, which in this case is illustrated as being of conventional tubular form; the spindle base 58 being externally threaded to carry a clamping collar 60 for securing on a spindle rail (not shown) as noted in connection with the previously described embodiment.

In the presently described embodiment, the spindle base 58 is likewise formed with bracket means 62 which may comprise spaced bracket arms having upwardly opening vertical slots 64 at the upper ends thereof and a downwardly facing horizontal shoul-der 66 extending between the lower ends thereof on the base SS. The spindle brake 50 again comprises a brake lever 69 fitted with a fulcrum pin 70 at which it rests in fulcrumed relation in the vertical slot 64 on the "bracket means 62 with one end thereof carrying a friction shoe 72 disposed for braking application at a lower end whorl flange 56. Also, the other end of the brake lever 68 is again arranged to form a handle portion 74 depending from the 3 bracket means 62 with a leaf spring 76 mounted thereon to extend upwardly and inwardly in abutment with the spindle base S8 below the horizontal shoulder 66.

In this case, however, the leaf spring 76 is arranged to bias the brake lever 68 normally to a more or less balanced hanging position at which the friction shoe 72 rides inactively at or adjacent the whorl ange 56', so as to be applied thereto immediately for braking the spindle 50 upon application of inward rocking pressure at the handle portion 74 of brake lever 68 and thereby provide a more rapid braking reaction than is possible with the spindle brake arrangement of the first described embodiment. Also, it should be noted that in the presently described embodiment the balanced hanging disposition of the brake lever 68 allows the leaf spring 76 to be arranged with its extending end seated against the spindle base 53 directly at the downward face of the horizontal shoulder 66 to provide for retaining the spindle brake 50 on the spindle base 58 with somewhat greater stability, while allowing it to be removed and replaced thereon just as readily as the previously described embodiment.

The present invention has been described in detail above for purposes of illustration only and is not intended to be limited by this description r otherwise except as dened in the appended claims.

I claim:

l. A textile spindle brake device for braking application to a spindle at a rotational surface thereof adjacent a fixed base in which said spindle is rotatably carried, said device comprising fulcrum bracket means on said base, a horizontal shoulder on said base adjacent said bracket means, a brake lever removably resting in fulcrumed relation on said bracket means, a friction shoe carried at one end of said brake lever above said base for braking application at said rotational spindle surface, the other end of said brake lever forming a handle portion and depending from said bracket means with a leaf spring mounted thereon to extend upwardly and inwardly in abutment with said base below said shoulder, said leaf spring serving to bias said brake lever to a normal position maintaining said friction shoe inactive -and further serving to retain said brake lever resting on said bracket means while allowing said brake lever `to be rocked on said bracket means for braking application of said friction shoe and remaining retractable to clear said shoulder and thereby permit removal of said brake lever readily from said base simply by lifting it therefrom.

2. A textile spindle brake device for braking application at a whorl flange on a spindle blade rotatably carried in a fixed base, said device comprising a pair of spaced bracket arms on said base extending upwardly above the level of said whorl ange and spaced outwardly thereof, said bracket arms having vertical slots opening upwardly at the upper end portions thereof and having a horizontal shoulder extending on said base between the lower ends thereof, and a brake lever fulcrumed on said bracket arms at said upper end slots, said brake lever being fitted with a friction shoe disposed for braking application to said whorl ange and having a handle portion depending from said bracket arms with a leaf spring mounted thereon and extending upwardly and inwardly therefrom to bear against said base below said horizontal shoulder, said leaf spring biasing said brake lever for normally maintaining the friction shoe thereon inactive and serving by abutment with said base below said shoulder to retain said brake lever on said bracket larms while allowing manipulation of said brake lever to apply said friction shoe at said whorl flange and remaining retractable to clear said shoulder and thereby permit removal of said brake lever readily from said base simply by lifting it therefrom.

3. A textile spindle brake device comprising, in combination with a spindle blade, a xed base rotatably carrying said spindle blade, and a whorl secured on said spindle blade and formed with an exterior flange disposed adjacent said base, a pair of spaced bracket arms on said base, a downwardly facing horizontal shoulder on said base adjacent said bracket arms, a brake lever removably resting on said bracket arms in fulcrumed relation, a fri-ction shoe carried at one end of said brake lever above said base for braking application at said whorl flange, the other end of said brake lever forming a handle portion and depending from said bracket means with a leaf spring mounted thereon to extend upwardly and inwardly in abutment with said base below said shoulder, said leaf spring serving to bias said brake lever to a normal position maintaining said friction shoe inactive and further serving to retain said brake lever resting on said bracket means while allowing said brake lever to be rocked on said bracket means for braking application of said friction shoe and remaining retractable to clear said shoulder and thereby permit removal of said brake lever readily from said base simply by lifting it therefrom.

4. A textile spindle brake device as defined in claim 3 and further characterized in that said leaf spring is arranged to bias said brake lever to a normal position at which the handle portion thereof is rocked outwardly to cause said friction shoe to bear laterally at a top surface of said base in inactive relation with respect to said whorl flange but disposed for braking application thereto upon inward rocking of said handle portion.

5. A textile spindle brake device as defined in claim 3 and further characterized in that said leaf spring is arranged to bias said brake lever to a normal position at which the friction shoe thereon rides inactively at said whorl flange but may be applied thereto for braking said spindle by inward rocking of said handle portion.

References Cited in the tile of this patent FORElGN PATENTS