US2573598A

US2573598A - Spool

Info

Publication number: US2573598A
Application number: US136553A
Authority: US
Inventors: Perry Ray Potter; Dickmann Edwin Albert; Bridge Loren Farquhar
Original assignee: Bemis Brothers Bag Co
Current assignee: Bemis Brothers Bag Co
Priority date: 1950-01-03
Filing date: 1950-01-03
Publication date: 1951-10-30
Anticipated expiration: 1968-10-30

Description

Oct- 30, 1951 R. P. PERRY ET AL 2,573,598

sPooL l Filed Jan. s. 195o .al i,

FIGI 9 Patented Oct. 30, 1951 2,573,598 'sPoon 'Ray Potter Perry, Laaue, Edwin Albert Diekmann,- St. Louis, 'and Loren Farquhar Bridge, Kirk-v wood, Mo., 'assignors to Bemis Bro. Louis, Mo., a corporation Application Januar;v1 3, 1950, Serial ol13'6`55..

8 Claims.' (Cl. 242;]25y

` 'This invention relates to spools and more particularly to wooden spools such as Aare used on the spindles `of twisting apparatus.

Wooden spools of Ithe class described usually consist of a Wooden barrel having Wooden heads at both ends, with a metal drive bushing at the'v lower end of the spool for'receiving the usual driving member on aftwistery spindle. One of the features of this invention is the provision of a yarn tail retainer for such a spool mounted on the lower end of the spoolnwhich isv adapted to withstand the severe usage 'to `which such spools are subjected and which is readily assembled with the spool proper. In general, a tail retainer of this invention is made of rubber or the like and has a yarn'lr'eceiving tubular barrel,` a web across one end'of the barrel, and a'yarnretain ing head at the other end ofthe barrel.4 The tail retainer is mounted r`with its web bearing against the end of the spool v,coaxial with the spool barrel. A metal drive bushing is xed inthe end of the spool barrel, the bushing having a tube extending through an opening in the web of the tail retainer and a flange Within the tail retainer barrel bearing against the web to hold the tail retainer on the spool. `Another feature of the invention is thevprovision of a shield for the periphery of tl'ie' lower head of the spool which is adapted lnot only'to protect the lower head from damage but also to prevent the loop of yarn which extends overl the rim of thelower head from the tail retainer to the barrel of the spool from precessing around the head during` the operation of winding the yarn on the spool. v

In general, a'shieldV ofy this'invention comprises a metal collar'fitted on lthe periphery of the -head and having a ring of rubber or the like molded on its outer periphery. Other features will be in part apparent and in part pointed out hereinafter.

'The 'invention accordingly comprises the elements and combinations of elements, features of construction, and arr-angements of parts` which Will be exemplied in the structures'hereinafter described, and the scope of the application of which will be indicated in the 'following claims.

In the accompanying drawing, in which one of various possible embodiments of the invention is illustrated,

Fig. 1 is a transverse section through a spool of this invention, taken on line I-I of Fig. 3;

; Fig. 2 is a plan View' of'Fig. 1;

Fig. 3 is a bottom plan view 0f Fig. 1;

;.F1g.;4'is a fragmentary section taken op line 45:14.01` Figa; and o.

'Figl` 5 is a perspectiveview'of atailrtaine per se of this invention, with'parts broken awayv and shown in section. Y 4' i Similar 'reference charactersY indicate corre?" sponding parts throughout the severalV views; of the drawing. f l f i" Referring to the drawing... @512091 0f .this vention is showngtocormprise a tubularcylindri-- cal Wooden barrel l'havirig reducedfdiamet'er eX-5l ternally threaded `end portions, the upper cndp" tion being designated andthe lowerY endpor-r' tion beinadesignated 5.- Theebore of vthe barrel. is designated 1., V.This ha's'wa ,reduced'darrletenr"l section 9 adjacent Ythe upper endofthebarr ll and a reducedfdia'meter section II..,at the,lower',` end ofthe barrel. xA bllshing I 3 is lixedvinfthe' reduced-diameter bore section V9, its ends` vbei g, spun over the ends of then'sec'tion as indicated;J atl5. u. ,4'

An annular wooden head ,I1 is threaded on theAv lllper end 3 o'fthebarrel."1`his isvheldvl against turning relativevto the barrel by dowelsr I9 driveninto and glued Vin holes 2l boredwath; an angle through the headinto thejbarrel. vThe head YI1 isVv providedvvitlxl a metal shield 2,3 enf".

circling its rim. `rAn annular Wooden head25, 'ist threadd'fon'the lowerv end'5 ofthe barrel. is heldagainst turningrela'tive to the barrelbyy do'wels' 21 '(Fg. il 'driven' into and 'glued in holes" 29 bored atan angle through the head interne" barrel'. The hea'd 25 is'provi'ded with' a specialr shield' 3|,` this being; one 'ofthe featuresqfthe" invention' and 'td'beI more particularly described" later. As shown, both the upper sp'o'olhe'ad11 and' the` lower spool head 25 are o f' laminated wood construction. Each is shown 'to 'c'ons'hi'st'fi4- three woodenplies glued'together. The upper' spool head I1 may, as shown, be of smaller diam#-4 eter than the 'lower spool head 25 to' facilitate' over-endtakeloii of thefyarn in unwindingf" i" 1 After Vthe lower head '25' has been'xed t'th'e'y barrel, it iscounterbored to forma circular'r'e-l" cess 33'coaxial"with'th barrel I. vThis opera-'I tion cuts away part of th'e lower eind of the bar? rel so that the flat inner end 35 ofthe recess 3,3`fl is flush with the flatlower'end of the barrel 'I .f A diametricalgroove'31 is thenmilled in the innerl end of the recess and across the" lower end of the" barrel. This groove', as vshown,"is of rectangular' cross section. Alsd'the recess "33`is conically unfj head 25 for receiving a number of turns of yarn at-the start of Winding onthe spoolto provide Y of such form and diameter as to t in the coni-fv cally undercut perimeter 39 of the recess 33, and:

a lower conical head 41 which may be of greaterdiameter than the head 45. At the upper end ofi the barrel 43, the tail retainer is formed with a flat web 49 having a diametiical s101751Y VAcorresponding in outline to the outline of the groove E can bezshown byan'analysis of the forces acting 31 milled in the inner end of therecess 33 and. l

across thelower endof the barrel oi' the spool.1 The lower head 41 of the tail retainer isiirmed.

on its bottom with yarn'catching teeth 53 for starting the'winding of yarn on the tail retainer.

The webbed end oi the tail retainer is fitted in the recess 33 with the web 49 bearing against the, inner end` ofY the recess and with the slot 5I aligned with Athe groove 31, and -is held in place by a metal drive bushing 55. This consistsof a v metaltube 51 i'ltted in the reduced-diameter bore section I.with .its upper end spun over on. the upper end of section l Ir as indicated at 59. Inte-V gral with the lower end of the tube 51 is an outwardly extending flange 6l. formed with a downwardly open diametrical channelV 63 which is continuous across the tube,v Flange 6I is of suchsize astoffit within'the tail retainer barrel `43 underneath and bearing tightly against the bottom of tiieweb 49.-VV vI'he channel 63-iitsA in the slot 5l of the `web and in the groove 31 and. opensfdown- Ward to receive the usual driving member ona spindle Yof atwisting frame. Y y Assembly of the tail retainer 4I with the spool i'sreadily accomplished Vsimply Vby fitting the upper end of .the retainer in the recess 33 with slot Y5I alignedvwi'th groove 31, driving in the bushing55 until the flange 6I bears against the webl 49, and then spinning over the upper end of thedrive bushing vtube 51 at 59. 'Ihe tail retainer, being molded of rubber or the like, Vis adapted to withstand the severe-usage to which twister spoolsof this type are usually subjected without-ap p reciable damage due to its resilience. Alse, if made of oil-resistant synthetic rubber, it is resistant to deterioration whichl might otherwise be caused byoil spattering on theretainer from the twisterframe.

The shield 3| for the lower yhead 25 of the spool comprises a sheet metal collar 65 of such diameter asf-to yiit tightly on the head and pre-formed with ali-inwardly directed lower' end flange 6T of channelshape in cross section. A ring 69v of elastomeric material, Le., rubber or the like, preferably ani-oil--resistant synthetic rubber such as neoprene (chloroprene rubber), is molded on the outside of; the collar. The 'rubber ring 69 is formed f with axial yarn-catching grooves 1I spaced at equal intervals around its* periphery. These mayr be moldedvor milled in the ring.- As shown, there are four such grooves', spaced at 90 intervals. Y The flange 61 of the collar 65 fitsfin anannular lgroove 13V formedin the lower lface` offthe lhead 25 adjacent its periphery. The collar lhas a portion 15-which projects from withinthe In winding yarnpn aspeol, agnumber-oi turns.V

y against the web.

of yarn are rst wound on the tail retainer; then the yarn is jumped over the rim of the lower head 25 and wound on the barrel l of the spool proper. This forms a loop of yarn leading over rim of the lower head from the tail retainer tol the spool barrel. As shown, the diameter of the tailretainer barrel 43 is. somewhat larger than thediameter of the spool barrel. I`, though this relationship is not critical. It is evident that :because of the varying number of turns of yarn iirst wound on the tail retainer barrel 43, the diameter of the tail retainer barrel cannot be establishedso that the pitch diameter acting on the `last turn of yarn on the tail retainer will equal the diameter. of the spool barrel I. It

,on the loop of yarnleading over the rim of the lower head' from the tail retainer to the spool barrel that this loop will tend to precess about the lower head in such a manner as to unwind more yarn from the larger pitch diameter barrel than from the smaller pitchdiameter Abar-` rel. sov that it would no longer fit snugly over the lower head 25v and so that it Wouldbe in dang-er of `being `fouled by other spools, or by partsl of themachinery. Precessingof the yarn, however,-

is eliminated by 'the provision of the grooved rubber ring on the periphery of the lower head.

When the yarn is jumped from. the tail retainer i tothe spool barrel, the loop of yarn may catch in one of the grooves in the rubber ring andv thereby be preventedfromprecessing. If the loopA doesv not so catch in jumping from the tail re-y tainer to the spool barrel, andif it then precesses about thehead, the precessionwould vbe arrestedby the loops catching in one of the grooves. FEI-1ev grooves in the `rubber, ringumay vnot be essen.-V

tial where the coeiicient of friction between the yarn and the rubber ring is sufficiently high Vto prevent precessingr It is therefore contemplated` that under suitable circumstances,. the rubber ring may be formed without grooves, and. with a completely smooth periphery. Thus, the rub ber ring prevents precessing, and at the same time protects the lower head 25 of `thespool from damage. Being made of Yoil-resistant syn.l

As many changes could beV made in the above' constructions without departingfrom the 'scope'Y of vthe invention, it is intended that all matter.

contained in the above description or shown in the accompanying drawing shall be interpreted as illustrativegand not in a limiting sense. Y

We claim:

l. A spool comprising a'tubular wooden barrel having a wooden head at :one end, and a tail retainer .formed of elastomeric material having a yarn-receiving barrel, a web across one end ofthe tail retainer barrel and a yarn-retaining he'ad'at its Vother end, said tail retainer lbeing mounted with its web bearing against saidfend of' the `spfool coaxial with the spool barreland being held 1in" place by a metal drive bushing comprising aftube fixed in the end of the spool barrel and extending through an opening in thelweb and' having af ilange within the tail 'retainer barrel bearing '-2.A A Vspool comprising Such precession would elongate the .loop

armbuiarfwoodep barrer 4having a wooden head at one end,-atail retainer of elastomeric material having a yarn-receiving barrel with a web across one end of the barrel and a yarn-retaining head at its other end, said tail retainer being mounted with its webbed end in a recess in said end of the spool coaxial with the spool barrel, with the web bearing against the inner end of the recess and being held in place by a metal drive bushing comprising a tube xed in the end of the spool barrel and extending through an opening in the Web and having a flange within the tail retainer barrel bearing against the web.

3. A spool comprising a tubular wooden barrel, a wooden head at one end of the barrel, a tail retainer of elastomeric material having a yarnreceiving barrel with a web across one end of the barrel and a yarn-retaining head at its other end, said tail retainer being mounted with its webbed end in a recess in said end of the spool coaxial with the spool barrel, with the web bearing against the inner end of the recess and being held in place by a metal drive bushing comprising a tube xed in the end of the spool barrel having a flange within the tail retainer barrel bearing against the web, the ange being formed with a downwardly opening diametrioal channel adapted to receive a driving member on a twister spindle, the channel and the tube extending through a slot in the web and the channel being received in a groove in the spool at the inner end of the recess.

4. A spool comprising a tubular wooden barrel, a wooden head at one end of the barrel, a tail retainer of elastomeric material having a yarnreceiving barrel with a web across one end of the barrel and a yarn-retaining head at its other end, said tail retainer being mounted with its webbed end in a recess in said end of the spool coaxial with the spool barrel with the web bearing against the inner end of the recess and being held in place by a metal drive bushing comprising a tube lxed in the end of the spool barrel having a ange within the tail retainer barrel bearing against the web, the flan-ge being formed with a downwardly opening diametrical channel adapted to receive a driving member on a twister spindle, the channel and the tube extending through a slot in the web and the channel being received in a groove in the spool at the inner end of the recess, the recess being conically undercut at its periphery and the tail retainer having a conical head at its webbed end tting in the conically undercut periphery of the recess.

5. A spool comprising a wooden barrel having a wooden head at one end, a tail retainer on said end of the spool, and a shield on said head comprising a metal collar xed on the periphery of the head and having a ring of elastomeric material molded on its outer periphery, said elastomeric ring being formed with grooves spaced at intervals around its periphery.

6. A tail retainer for use on a spool to receive a number of turns of yarn at the start of winding on the spool consisting of a body molded of elastomeric material in the form of a at bobbin having a relatively short tubular cylindrical barrel, a head at one end of the barrel, and a web across the other end of the barrel, the web having an opening adapted to receive a drive bushing for holding the tail retainer on a spool.

7. A tail retainer for use on a spool to receive a number` of turns of yarn at the start of winding on the spool consisting of a body molded of elastomeric material in the form of a iiat bobbin having a relatively short tubular cylindrical barrel, a head at one end of the barrel, and a Web across the other end of the barrel, the web having a diametrical slot adapted to receive a drive bushing for holding the tail retainer on a spool, the head being formed with at least one yarn-catching tooth for starting the winding of yarn on the tail retainer.

8. A tail retainer for use on a spool to receive a number of turns of yarn at the start of winding on the spool consisting of a body molded of oilresistant synthetic rubber in the form of a flat bobbin having a relatively short tubular cylindrical barrel, heads at the ends of the barrel, and a web across one end of the barrel, the web having a diametrical slot adapted to receive the channel and tube of a drive bushing for holding the tail retainer on a spool, the head at the other end of the barrel being formed with yarn-catching teeth for starting the winding of yarn on the tail retainer.

RAY POTTER PERRY. EDWIN ALBERT DICKMANN. LOREN FARQUHAR BRIDGE.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 368,675 Leonard Aug. 23, 1887 1,852,243 Hubbard Apr. 5, 1932 2,048,995 Clinton July 28, 1936 FOREIGN PATENTS Number Country Date 690,147 France June 10, 1930