US2011481A - Twisting mechanism - Google Patents

Description

' Aug. 13, 1935.

R. E. GETCHELL 2,011,481

TWISTING MECHANISM Filed May 19, 1934 INVENTOIi,

ATTORNEY.

' 3 Sheets-Sheet 1 Aug. 13, 1935.

R. E. GETCHELL TWISTING MECHANISM 3 Sheets-Sheet 2 Filed May 19, 1934 g INVENTOR,

ATTORNEY.

Aug. 13, 1935.

R. E. GETCHELL 2,011,481

TWI STING MECHANISM Filed May 19, 1954 3 Sheet-Sheet 3 INVENTOR, fiaymizJl. Qkfieli,

mad;

ATTORNEY.

Patented Aug. 13, 1935 UNITED STATES,

a I 2,011,481 'rwrsrme MEcnAms R y nd E. .Get h l y ke Mass ss s e is B. F. Perkins & Son, Inc Holyoke, Mass, a

corporation of Massachusetts Application'May 19 1934;, Serial N0. 726,490 8 Claims. (01. 117-23) This invention relatesto improvements in apparatus for uniting elements and is directed more particularly to improvements in machines for twisting elements about one another.

The principal objects of the invention are directed to the provision of apparatus of the class described wherein a package .for supplying an element or elements'is rotated for a twisting or winding operation and has novel means associated therewith to facilitate uniformly tensioning of the element or elements being withdrawn from the package for such an .operation as uniting two or more elements. Another object .of the invention? is the provision of apparatus of the class described which has novel meansto retard or stop rotation of the yarn package ,to overcome the tendency of the package to overthrow or overstravel the spindle which brings'about the rotation thereof.

A further object of theinvention is the provision of an apparatus which is not only simple in form and eflicient inits operationbut which is operable at high speeds to produce uniformity in respect to the tension of the elements andtheir relation in the finished product. i f 1 Various novel features and advantages of the invention will be hereinafter more fully referred to in connection with the following description of the preferred form thereof taken in connection with the accompanying drawings; wherein: Fig. 1 is a-partialsectional and elevational view "of amachineembodying the novel features of the invention,

Fig. 2 is a side elevational view of the parts forming the means to prevent overthrowing or overtraveling of the package and its support with the parts thereof in separated relation, I Fig.. 3 is a side elevational view showing the 'lower portion of the package core and adapter with which it co-operates, V f

Fig. 4 a plan sectional iew on the lineiL- l Fig. 5 is a plan sectional view on the line 5"5 of Fig x 1 Fig. 6 is a sectional plan view on the line 6-'-G of Fig. 1, V V Fig. 'Tis a perspective view showing a plurality of the shoe members forming a part of the ten siOning mechanism, 1

- Fig. 8 is an elevational view with parts in section to show certain details of theinvention,

Fig. Q'is a plan view of the shell .showing the element guiding means associated therewith,

Fig. -10--is a partial plan View of-the shell showing the uppermostxelement guiding means, and

-yarnor filaments. The package is repre .tethe pi dl sh ll an essoeiats par s,

F ei- .11 i a s t on sy t nel w the i119? u of i 10.

Re rin n ts hed awin m re,,. i1. sa t i ention wi l be fu ly d scr bed- 'e'supp'o t is epre ted a 12 whi h ss ri s s a ubular member 4 fo sup s ns ssi dle s me? 6. ThislbQlStel .5 forms no part of the pre nt invention It is pt for mistsbly resell le a s i dle the low n o Wh s extend in h olster so a it y rotate fre ly th e-i1!- The bolst r .6 and pa 4 ar Fr t ably d snon the up d A o h spindl as by set tionbearine as a i and .8. A tubu 9??? member 2.9 is prov ded whi may e 19991 and of h a ter 12 th in W1 1 e vas a pa ka f med by a w ndin 0 Wind n of generally by 1 in Fig. ,1.

A whorl or pu l in is t db -fifhas a he? p /7 .3. wh ch 5' fixed t0 he sp ndl suitable manner and this whorl ms) as by a belt sotnat in .t mt e spind s -Q tated- 'Thsspindle may b ,mol l fldil anyo hr 1 way than in the b st an i mayhave a motor associated the w th t asi itat z tstien,

of the'whorl 2; as by a ri g. 39 whe eby th whorl, spindle and shell are rotatahleas la unit ..A shell 24 which is open at its .u 'perside has .a lower wall :25 clamp d to a es 6,1135 3 whichmay be called aspi dl uni .-wh e-tnez core member 20 and t ada ter or upnsri .IQ the. package may .b called th aqkaeswswf port or package-carrier uni-t. Since the adapter is'rotatable rela iv o the spindl it will peseen that :the pa kage i there or rotatable Adjac nt th lower e o h edants li'.

are provided plurality o so l ..,t,s 1.4 a 1 provided won the lower end of the core go also as shown in Fig. 3v sothat the core and adapter are held aga n trelative rot tion- A rist I n as is pre rably d o ed n entrica a fine axis of the spindle and is clamped hetwee he parts '28 and :30 as shown in Fi 1 so that it 1 and 9 to g l inclusive).

Th ack may b t rm d by wi idi 1 ton o mere elements ya ns whis ga e id ,in Fig, 3, in which ar recei able; onsuesd? die-.

'44 in the fo m o a b tto an an 1 1 i id A6 adia n th p e ssq the he 1459 about one another to form what may be called from'thepackage behind the guides 40' and 42' and around the button of guide 44 and then upwardly in back of the guide 46 and :upwardly through an apertured guide 48 above the spindle. The guide 48 may be carried by an upright such as 50. e

A draw-off drum 52 and .a take-up spool 54 rotatable in the upright may in any well-known manner be operated to, take up the elements ex tending upwardly through the guide 48. As the spindle unit is rotated the package P and pack: age support are rotated and elements are unwound from the package to bring about atwisting of the elements together. ..If for example, there are three elements, they will betwisted a strand. a g I It will be noted that the package and itssupport may rotate relative to the spindle and shell but the package is rotated therewith and at a slightly faster speed as material is unwound from the package, Thus, with the spindle and shell unit' rotating at,'say, eight thousand revolutions ner 'shownjin Fig. 8.- 1 When a shoe is located in a at the upper and lower sides thereofoverlie'op- 'posite si'des of the'friction ring as shown in Figs;

3- rand e;

per minute, the'package and'its support will also rotate at eight thousand revolutions per minute plus such a number of additional revolutions as will be brought about by leading'for unwinding material from the package.

' certain twisting operations with the spiniw hilefothe'r means isprovided to prevent the fpackage-anditssupport from over-traveling the spindle unit when the spindle unit is slowing 'down as when. the machine isto be stopped. This mechanism will now be described.

shell 50 is associated with the lowerend ofthe adapter I2 and has spaced around its pe-- riphery a pluralityof slots or grooves 52, 54, 58 and i 58, to receive friction shoes'such as 62, 64, 66

' is provided 'with a horizontal groove such as 64 of the'shoe 64 providing lips '65 at either side.

and 68 as shown in Fig. '7. Each of the shoes thereof. These friction shoes may be inserted in their respective slots or grooves after the mangroove; the lips The shoe is rotated by the package support unit As the spindle unit rotates and the package and its support rotate therewith the friction shoe is thereby urged outwardly against and frictionally engages the ring 40 so as to act Q as a brake to retard or impede to some extent the rotation'of the package and 'its'support relative to the spindle unit which is brought about by'unwinding material from the package. 1

That is'to say,-the rotation'of'the package and support relative tothe spindle unit is resisted by the shoe bearing against the ring, whereby the rn'aterial unwound'from the package is thereby tensioned. The frictional action'between the shoe f andring is the result of therelatively highspeed I o' f rotationof" the spindle unit, package and'i'ts "support." Since the speed may be uniform and constant the pressure of the shoe against the ring is constant and uniform and thereby there i' sf pr ovidcd a uniform, constantretarding action against rotation of the package relative to'the 86 of the member 84.

spindle which results in the material being uniformly tensioned as'it is led fromfithe package.

It will be noticed that the slots are of different widths and that likewise the shoes receivable therein are of different widths and therefore of different weights; Byproviding "shoes of different weights, it is possible to vary the tension the package.

A ring I0 may be provideditoioverlie the parts just described to conceal the same and prevent foreign matter from interfering with the desired operation of the shoe or shoes on the ring. Means to retard rotation of the package support and prevent its overtraveling the spindle when it is stopped will now be described.

The lower end of the adapter I2 is'provided 5 with a plurality ofnotches 14 which receive prongs 16 of a washer 18 shown in Fig-2. .A washer-like spring of common form is interposed between the washer l 8 a'nd"lower end applied to the yarn or elements unwound from of the adapter I'2'and a friction washer 82: is

preferably disposed below the washer 18. Y A friction ring 84 is locatedbelow the friction Washer 82 and has downwardly'depending"ears suchas 86 on the inner sidethereof. A member 88' similar to the member- 82 is located between the washer 84 and lower wall 90 of the shell 50-.

The parts 18, 82, 84, 88, and lower wall00 of the member 50 areyieldinglyheld in frictional engagement by the action ofzthe spring 80 and all these are rotated by member '50 with the package supporting core 20 and adapter I2. The

part 84 is held againstrotation relative to the spindleand shell by a disc 92, below the part 50' which has grooves 94 for receiving the prongs 96 associated therewith which are slidablesin' the upper part of the whorl ,22 (see Figs. 1

and 8). I o H 1 When the spindle and shell is to be stopped The disc 92 has buttonsand it is desired to preventthe package and its support from over-traveling the spindle unit, the

member 84 is held against rotation and, since the parts of thebrake mechanismare frictionally' engaged, this results in a'braking. action.

A cam member I00 is, oscill'atable around a part I02 of'the .member'4 and may be oscillated by means of a handle I04 extending'from a side thereof. A' slot I06 in thejcammember I00 receivesa stud I08 fixed'in thepart I02 wherefore as the member I00 is oscillated it is elevated by means of the pin and slot so that its up'per side brings up against the buttons and elevates I the disc92. As"the disc. is elevated the, prongs ,86 of member .84 enter the'groove of the disc and in that way the member 84 is held against I rotation and thereby the braking action takes support. v

on the ring with 'a. constant uniform tension to thereby uniformly resist relative rotation of the package and support relative to the; spindle unit. In this way the element or elements, which "Dlaceto retard-rotation of the package andits It willbe observed that. the friction shoe acts may be called a yarn or yarns, being withdrawn from the package are uniformly tensioned. The

tension is uniform whether the package isfull or when it is about exhausted, the tensioning being brought about'by' rotation of thelspindle and package and not being affected by their duce'twisted or wound products. where the elements are uniformly tensioned and disposed.

WhileIhave describedmy invention in great:

0 relative rotation. Wherefore it ispossible to prot detail and with respect to a preferred embodiment thereof, I do not desire to be limited to such detail or embodiment since many changes and modifications may be made without departing from the spirit and scope of the invention in its broader aspects. Hence, what I desire to claim as new and secure by Letters Patent of the United States is;

1. A machine of the class described comprising in combination, a spindle and a yarn package support relatively rotatable, a friction ring associated with the spindle, a carrier associated with said support provided with means to receive one or more shoes, a plurality of shoes receivable in said means adapted to bear on said ring as the said spindle and support rotate -to retard relative rotation thereof and exert tension on yarn being unwound from a package on the support, and independent means acting on said carrier to retard rotation of said support' 2. A machine of the class described comprising in combination, a spindle unit including a shell, a yarn package support rotatable relative thereto, a friction ring associated with the spindle, a carrier associated with said support provided with means to receive one or more shoes, a plurality of shoes receivable in said means adapted to bear on said ring as the said spindle and support rotate to retard relative rotation thereof and exert tension on yarn being unwound from a package on the support, and independent means acting on said carrier to retard rotation of said support, and guiding means including a bar member spaced from said shell for yarn from a package. v

3. A machine of the class described comprising in combination, a rotatable spindle having a friction ring associated therewith, a package support rotatable on said spindle having a radially-disposed slot, and a friction shoe movable in said support bearing on said ring, the said shoe having parts engaging said ring to hold the same in said slot.

4. A machine of the class described comprising in combination, a spindle having a friction ring associated therewith, a package support provided I whereby a shoe of predetermined weight may, be,

associated with the support.

5. A machine of the class described comprising in combination, a rotatablespindle having a friction ring associated therewith, a package support rotatable on said spindle having a plurality of radial slots of different widths in the lower side thereof, and a plurality of shoes of different,

widths receivable in said slots for bearing on said ring.

6. A machine of the class described comprisingin combination, a rotatable spindle having a fric-. tion ring associated therewith, a package support rotatable on said spindle having a plurality of radial slots of different widths in the lower side thereof, and a plurality of shoes of different weights receivable in said slots for bearing on said ring.

with said carrier, a shoe receivable in said means frictionally bearing on said ring whereby the carrier is frictionally held against rotation relativeto said spindle, frictional brake means between said carrier and spindle and operating means therefor.

8. A machine of the class described comprising in combination, a rotatable spindle, a yarn package support rotatable relative thereto, a friction ring outside said support rotatable with said spindle, a shoe-support member rotatable with said support, a shoe freely movable radially in opposite directions on saidshoe support, said shoe being of a predetermined weight to be moved and bear on said ring by rotation of said shoesupport only and with a degree of radial pressure dependent upon the speed of rotation of said support and the weight of said shoe.

RAYMOND E. GETCHELL.

Images