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Патент USA US2407368

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A ~` sePt- 10,1946.'
l.. M. vcoTcl-IETT ETAL
_
2,407,366
YARN WINDINGMACHINE
Filed Jan. 19, 1945
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Sept. 10, 1946.
1_. M. coTcHz-:TT ~ET A1.
„2,407,366
YARN WINDING MACHINE
Filed Jan; 19, 1943
17 sheets-sheet 2
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6
Sept. 10, 1946. '
L. M. coTcHl-:TT ET AL
YARN W'INDING MACHINEJ
Filed Jan. 19, 1943>
2,407,366
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'
1'7 Sheets-Sheet 5
IN VEN TORS
Sept. 10, 1946.
L. M. COTCHETT ET AL
2,407,366
YARN WINDING MACHINE
Filed Jan. 19, `194s
17 Sheets-Sheet 4.
“"lnIsu-„
í
Sept. 10,1946.-
_ I.. -M. coTcHETT ET AL
2,407,366
YARN WINDING MACHINE
' Filed Jan. 19., 1943 '
17 sheets-sheet 5
INVEN ORS
sept. 10, 1946.
L. M. COTCHETT -ET AL
2,407,366
YARN WINDING MACHINE
Filed Jan. 19, 1943
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17 Sheets-Sheet 6
Sept. 10, 1946.
l.. M. coTcHETT ET AL
2,407,366
YARN WINDING MACHINE
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Filed'JaIl. 19, -1943 i
17 Sheets-Sheet '7_
§33
'
INVENToRs
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Sept. 10, 1946.
2,407,366
YARN WINDING MACHINE
Filed Jan. 19, 1943
25,0
17 Sheets-Sheet 8
. /4’J‘
25......
INVENTORS
Sept. 10,. 1946. >
1"..'MQcoTcl-IE‘I'T> ETAL 'i
2,407,366
YARN WINDING MACHINE
Filed Jan. .19, 194s`
17 Sheets-Sheet 9
Sept. 1'0, 1946.
|_. M. coTcHr-:TT ET AL
YARN WINDING MACHINE
Filed Jan. 19, 1943
2,407,366
v
17 ASheets-Shee‘l: l0 `
Sept. 10, 1946.
L.. M. cOTcHETT ET AL
2,407,366
YARN WINDING MACHINE
Filed Jan. 19, 194s
17 sheets-sheet 11
Sept. 10,1946.
v .ì L_M. coTcHETT ET AL
2,407,366
~ _YARN WINDING MACHINE
-_ Y Filed‘Jan. 19; 1943
A17 Smeets-sheet 12
` Sept. 10,' 1946.
'
2,407,366
L.. M. coTcHETT ET A1.
YIARN WINDING MACHINE
Fi-led Jan. 19., 1945
.
1'7 Sheets-Sheet 15
IN1/E
ORS
Sept. 10, 1946.
l L.. M. coTcHETT-Íl-:T AL
YARN WINDING MACHINE
rFiled Jan. 19, 1943
2.40.7565
.
17 Sheets-Sheet 14
n
-
INV
TORS
Sèptflû, 1946.
l.. M. co'rvcHET-»r ET AL
2,407,355
YARN wiNDING MACHINE
Filed Jan. 19, 1943
l 17 She'e’oS-Shee‘ìI l5
IN VEN TORÃI
Sept. 1'0, 1946.
' ~ L.. M. coTf-:Hl-:TT lu-:T ALA
2,407,365
YARN WINDING MACHINE
Filed Jan. 19, 1943.
-1'7 sheets-sheet 1e
Y Sept. l0, 1946.
L. M. coTcHET'r x-:T AL l `
'
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YARN
wINDING
MACHINEY
Filed Jan. 19t 1943 `
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2,407,366
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' 17 Sheets-Sheet 17
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.
Patented Sept. 1o, 1946
2,407,366
vUNITED STATES 'Y 4PATENT OFFICE
"YARNVWINDING MACHINE
«Louis M. `Cotchett; Hingham, and Lesterßampbell
nand FerdinandfF. Stange, Westfield,4 Mass.,l as
signors1 to Foster Machine Company, Westfield,
Mass., acorporation ' of 'Massachusetts
»Applicationüanuary 19, 1943, Serial `No.` 472,862
22` Claims.
(Cl. 24E-35.6)
p
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knotted and vWith f the running .threadt or . yarn
The present? invention relates tonewf and use
. particularly'. to'za'novel ~and improved vsemiïeauto
entering ~a `tensionëand yslnbbing mechanism;
»Figuref'îis avertical sectionalview through- a'
--rnatic‘yarnwinden
Winding - unit »an-d showing »the yarn supply» mass
"fnläirnprovements in :winding machines and more
Objects and -advantages'of- the invention will .be `5 `supportingmeansand tension device inside ele
vation;
set ’forth in part` hereinafter 'and'iu‘ part will be ’
Figure -8 is a fragmentary front elevation ,of the
"'obvious‘heréfrom, or 'mayîbeî learned by'practice
parts shown inFig-ure ’7; ~
with theîinventi‘on,'the same beingfrealized and
Aattained .by means of therinstrumentalities. Yand
-
»Figure =9 vis a fragmentary "vertical *section
^ combinations pointed out .irrïthevappended claims. . to showingfa bobbin Íbeing doffed‘fromfthe«yarnfsup
.Theïinventiontconsists in' the novelîparts, con- ' ’
ply mass supportingmeans;
»~
'
YFigures ~ 1^0~to~ 20 -are fragmentary» viewsfshow
1~ structions, 2 arrangements, :combinations and ' im
»ing various positions oi' the cam means'in‘differ
iprovements hereinshown and described.
ent phases vof 'their operation. Figuresrl‘O, 12,14
The accompanying"drawingsreferred to here
in"andrconstituting"apart hereof1 illustrate one .i5 Vand 16 areffront'elev'ations of the"cams“shown
in side elevation--in-Figures `'11g/13,15 and `1'7, re
f embodiment'. of i theA invention, ‘ and together with
spectively'the-»stages of operation'shown inthe
the description, .'serve `.to *explain “the principles
pairs of >vìevvs being ‘the same. Fi'gure`fl19`is a
f fragmentary top plan vView 'ofr the camimeans" and
VFigure‘l-#A is aJplan-¿îview "of-1a typical and il-_ l, ‘zo Figure' 20 is atop plan 'view'fof- t'hefrackffandîpin
of the invention.
Of the drawings:
' n
ion means ‘shown in'Figiire> 1-8;
'
, Figure 21 ' isav4 top "plan ViewÍ Aof -the yarn sup
'lustrative embo'dimentfof ‘the presentfinvention
and shows the preferred form‘ thereof;
Figure`> l-B ‘is anlend'elevation of the head end
ply- mass holding and' repieni'sl'iirrg‘?v means;
'Figures `22 to .'"27 -`are "elevations, "with l'certain
Y
Y
Figure l-C is a side elevation of’Figure l-B; g5 >^ parts omitted,A 'of' >the"'In'eansîshown' in"Figureif21,
the ‘successive vieWs' being taken "from circum
y‘Figure 'Z-A is‘a fragmentary side .elevation
'ferentia‘liy Yspaced""points 'corresponding to Vthe
of .some of thewinding units' and the tender, the
position or the’ respective ’views ’ Figure" 22ï thus
upperpo-rltion en_ly‘beingshown;
Ybeing taken’ along a 'line‘ext'ending‘from fthe kcen
Figure 2-.B is the .lowerportion of the sideele 30 vtral shaft 'in'Figure`21'to` the’ same centralshaft
' or driving end of the machine;
vation;
'
as shown in Figure 22;
' Figure V{fi-_A is-a ¿fragmentary vertical. section
. showingt-he ¿upper portion. of one. .of 1 the -» Winding
’
`
Y
Figure §28 is ï a "fragmentary ‘vertical ' section
showing a^winding 'unitin starting position;
`units and the travellingtender;
‘Figure’ 29 is'a similar view showing the Winding
Y Figure S-B shows-the lowenlportiefnrot the ver-k :rö'unit‘in7 knocked-off position such‘as might be
caused‘by'exhaustion of the yarn supply;
tical section-shown inë‘igure 3A;
A-.Figuretßi is'a- fragmentarysectional ViewV ofY the
*"Figure`30`ie al‘side elevation of an assembly of
'parts showing the suction duct rocked ahead vand
upper portionof theten'der»andkwinding unit '
downyvhieh movement brings the knotterinto
showing certain of the partstiir several positions,
40 'position'for tying'two >strands ,ofA yarn.
‘ and with many partsY omitted ‘ for ‘ clarity;
' Figure ~4-.A" is ia'ifragmenta‘ry t vertical View ‘of
the narroivslot.` running longitudinally the äduct
and 'two slots'running transversely across `the
Figure 3l is `a`front elevation, With> parts re
moved; to show“ YtheA knetter loweredv tok a` position
‘justipriorito vengaging the -tvv'o'strands of yarn
Vbefore‘tying same together.
» 'duct'. intersectingfthe long narrowslot. '
'
A
.
_
'Figure-32 'is'a"fr0nt elevation, similar iso-Figure
31, but with the ~`‘knetter ‘a'fivanced'by the" travel
'Figure 5 isv al'fragmentaryito-p plan View ci a,
Win'ding‘unit showing the position of the- strand
of the' tenderjtothe'po'sîtion for engaging? the tWo
"of1yarn,~and"with_ the outline-oi certain of‘the
mtran’ds 'or yarn' at IYtlîe‘ beginning the knot" tying
tender pat-ts being'- superimposed onl the View;
>FigurefE-fA is a'fragmentary top plan view of 50 @FigtirefBS-isa fro-nt'elevationg'simiiar to Figures
certain of- the‘parts showing the assembled yarn
4Bxlvami A32 but with-lmotter still- further-advanced,
.bythe traveLoiì the tender, to the positionl reached
at the .completionoi the »knot tyingv operation'.
lFigure 6‘is a‘VieW similar‘to Figure 5-,A show
»iiig the tender moved to `a further positien, the
'Figureß‘t isafro-nt elevation,> similar> to Figures
operation.
ends;
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"
"
‘
`
y
running thread or-yarn'having ‘been joinedand „55
3l, B2 and V33 but with the knetter in itsnornral
2,407,366
3
4
idle position up and away from its knot tying posi
The yarn supply masses normally comprise
spinning bobbins and the holder for them is
tion.
formed as a rotatable member having, in a pre
Figure 35 is a timing diagram showing the time
relation of the various operations, of the tender
and of the winding unit.
ferred arrangement, three parallel bob-bin receiv
ing pins, extending in a generally upward direc
tion, each of the pins being adaptable to receive
The present invention has for its object the
provision of a novel and improved substantially
a bobbin.
automatic winding machine for winding yarn or
other strand material into packages. A further
object is the provision of a winding machine re
quiring a minimum of attention on the part of
the operative, and which requires only the man
ual replacement of the fully wound packages with
new cores on which the yarn is to be wound and
the manual loading into the machine of new sup
ply masses of yarn. The invention further pro
vides a winding machine in which the free end
of the yarn on a package may be easily found and
picked up and the end of the yarn may be drawn
off more readily than heretofore. Still another
object is the provision of improved winding ma
chine in which the replenishment, assembling and
knotting operations are performed only on those
units where the yarn has been exhausted from
a supply mass or winding has stopped for other 25
reasons.
As one bobbin becomes exhausted, or
the strand of yarn becomes broken, the holder
may be rotated to bring the completely or an in
completely exhausted bobbin to an intermediate
position and the same movement brings a reserve
bobbin into winding-01T position, the same move
ment also moving the exhausted bobbin through a
dofñng operation in which the bobbin is removed
from the pin, said pin being rotated around to a
loading position for a fresh supply bobbin.
When the bobbin is rotated into the intermedi
ate position, it may be observed by the operative
as to whether there is any yarn remaining there
on, so that option may be had for its proper dis
position by hand. If suñicient yarn appears upon
the bobbin to justify, the operative may place the
bobbin in the reserve position so that it will be
subsequently moved into running-off position and
the drawing off of the yarn resumed.
If, however, there is no yarn on the bobbin the
operative ignores it and it is doffed from its Sup
porting pin in the same movement which brings
Further objects of the invention are to provide
selectively operable bobbin dofling means so that
the supply bobbin into the running-off position
only those bobbins from which yarn is not being
drawn are doffed; to provideran improved yarn 30 and the exhausted bobbin into the intermediate or
observation position. The pins are preferably
end finding and drawing off means; to provide
pivotally mounted on their holder, with the axis of
improved means for reversing the yarn package
the holder such that the pins are slightly inclined
being wound during the yarn end assembling
and means are provided for swinging the ex
operation; and, among other objects, to provide
for an improved, simplified winding machine 35 hausted bobbin and pin downward and outwardly
as it moves through the dofñng operation to the
which will wind at high speeds and produce a
loading position, thereby providing for the ex
large number of wound packages economically.
hausted bobbin to be thrown downwardly and to
In the preferred embodiment of the invention,
drop by gravity from the pin.
here disclosed, the invention is illustratively ap
plied to a multi-unit winding machine having a 40
Adjacent the holder is provided a slide directed
plurality of surface driven winding units arranged
toward the reserve bobbin pin so that the opera
in a continuous series, each winding unit corn
tive need only drop the bobbin on the slide and it
prising a constantly rotating driving roll, a piv
will be automatica-Hy guided onto the reserve bob
oted arm carrying a package core receiving spin- l
bin pin thereby expediting the operative’s work in
dle or shaft which can be .lowered to bring the
core into driving relation to the roll so that yarn
or Aother filamentous material is wound on the
_package by the rotation of the roll and core.
Usual yarn guide means are traversed back and
forth across the surface of the package to wind ,
the yarn properly on the core.
The `winding package normally rests upon and
is driven by the roll and is lifted and held away
therefrom by a cam and latch mechanism to an
~ replenishing the bobbins.
Cooperating with the several winding units in
succession, and moving relatively to them is a
tender, and means are preferably provided for
moving the tender past the several winding units
which are preferably fixed with reference to the
machine frame. The tender is supportedby and
moves on a trackway, which trackway preferably
extends along the multi-unit winding machine
near its base and forms an endless track having
idle or non-driving position upon any discontinu55 two straight portions parallel to each other, one
ance of the flow of the yarn being wound as incli
at either side of the machine, these straight por
cated and controlled by a yarn detector ordrop
tions being connected at the ends by curved track
wire normally held in operative position by the
portions which provide an endless path, of gen
running strand being wound.
erally oblong shape.
The winding units are preferably identical and
On the tender and near its lower portions is
60
may be divided into two groups of about fifty
provided a motor which is drivingly connected
each. the two groups facing in opposite directions,
with traction devices carried by the tender and
while the driving rolls for each group are al‘ined,
engaging the trackway. Conventionally, the
mounted on and driven by a common shaft, each
traction devices may be a belt supported by pul
of the t'wo group shafts being driven by a separate
65 leys, the belt resting on one member of the track
motor at the desired winding speed.
way, and connected through variable ratio gearing
Adjacent each of the winding units is provided
to the motor so that the speed of travel of the
- a support for a plurality of the yarn supply mass
tender past the winding units may be varied at
such a's bobbins from which, in succession, yarn
will and adjusted to size of the supply package
is supplied through suitable tension mechanism 70 and speed of winding of the yarn or other ñla
to the package being wound, passing over the yarn
mentous material being wound (which is the du
detector so as to prevent its moving into contact
ration of exhaustion), or the speed of the opera
with a cam which actuates the latch lifting mech
tive in handling the bobbin, or the most efñcient
anism until the yarn has been exhausted or
combination of these factors.
broken.
75
The traction motor preferably receives its power
'52,401,366
r6
.Y ¿This :_ arrangement ofY directing the exhaust
from;.af bus :banextending along and "1 optionally
blast is also advantageous as itipromotes the re
moval of.lint,.dust and other 'foreign matter from
the winding unit, since asthe suction nozzle is
Hformingip articf ithe ïtrackway; the returmcircuit
-.being grounded,andzp'oweris preferably >supplied
» atan inherently .safe voltage so that no hazard is
V,createdin.,case: the Voperative’s body should short ~. 5 r-letracted the blast may escape> generally in the
directionof winding units and the tension de
l,circuitthe powersupply. Preferably the voltage
Yvices th'at respectively lserve them, thus blowing
' is. in; the neighborhood` of. twenty-ñve volts, and
01T v'stray lint and cotton hairs before they may
this may be derived fromfa .step-down transformer
v accumulate into “gouts” or “rat-tails” to be
or otherwise.
drawn into :and interfere with the tensioning or
.Theltender also includes alsuction nozzle which
is preferably.. relatively thin,.of a width greater
,than îthey package being wound and vis directed
slubbing means,ior tobe picked up by the flow of
the yarn being woundand included in the wound y
, package as a “slug”v togivetrouble in subsequent
ltoward ,the package, so that after the yarn has
been `exhausted’from .a supply bobbin, the loose
yarn processing operations.
of air.
'
In order to prevent’recirculation of Suchfor
-yarn endon'thepackage may be automatically
1 found .andsucked into the nozzle bythe current
eign matter as may be drawn into the suction
nozzleas vwell ascyarnswhich are cut off in knot
Whilethe suction nozzle'may be of a
width greater than the package> being wound, it .is
accurately .proportionedto directly control the
ting `the blowerzis .preferably provided with a
mayzbe sufûcientlylongto be tied up but is pre
vventec‘l;.if1‘.<nn being unnecessarily long, thereby
preventing Waste of the yarn. To provide for the
whichitwasremoved.
separator so that. allsuch entrained material is
the `blo-Wer and is not
length of the loose end rof the yarn sucked and 20 removed from thelair
blown out to foul :the winding mechanism from
.drawn from» the-wound package, so that the length
Along the trailing‘edge and at the underside of
the suction ductis provided along narrow slot
suction, the tender -carries »a blower which may 2 Ul extendinginto the nozzle, and for a consider
able distance toward the blower, and means are
" be ‘conveniently driven by the traction motor, or
provided for engaging the `yarn drawn into the
-the*blowerrnay be electrically driven, independ
suction duct and for removing it from the duct
Vvent ofthe traction motor, andthe suctionnozzle
through this long narrow slot. For this purpose
'is connected to the intake side of the blower by
an air duct extending fora-‘considerable distance «i0 ¿a .second_:lslot ,parallel to the path of movement
.oi-’biche tender, yinteresects the long narrow slot,
in a generally downward and outwardly direction
away fromV the package. ’
’ î.l\.’.[eans are also provided for reversely rotating
lthe package as the tender passes so that the entire
periphery of the-wound package may be explored 1
forthe- loose end and, once the end is found, it
will`be unwound 'from the package throughits
reversed rotation. In the illustrativel embodi
ment, an idle roll is mounted at'the upper and
forward portion ofthe' tender-supported air duct,
closely adjacent to the suction-nozzle, and means
‘areprovidedior moving the rollerv between the
package and `its driving roll. `With the package
thus kraised orin'its non-winding position, these
„a hook memberis provided on each winding
vunit on the frame which-.hook may enter and
__passthrough the second slotias the tender< moves.
VDuring this passage the hook engages the yarn
lying in the duct'so. as to slide the yarn laterally
of' the duct and finally through the longv narrow
slot,.the :length of yarn having been determined
bythe >periodfof Contact of the idler` roll with
no`:the driving ¿roll ¿and package, and being more
.than 'sufficient to extend .past the second slot.
4Preferably,this yarn engaging and removing hook
also holds and carries the lleading end of the yarn
from theireserve supply bobbin so as to assemble
means also serve so to time the period of contact 45 :the: leadingend ofthe reserve yarn supply with
the exhausted endfofthe yarn Ywound on the
of the‘idle roller with the driving roll and package
package,therebyïpositioning the two yarn ends
readily ¿"for tying, either manually -or by a me
that >only a predeterminedv length of‘yarn will be
unwound'from the package.
chanical'knotter.
~
V“Tof expedite! and insure 'the freeing of the yarn
end from the surface of the package,` a blowing 50 j- -'The'.knottermay?be of‘conventional design, and
'preferably mounted .onthe tender so as to re
nozzle is provided immedi'ateiy next tothe suc
tion nozzle, the 'exhaust air ffrorn‘the' _blower is
directed-to ñow alo-ng the "tcp of thevsuction
'nozzle so that, when `the suction' nozzle is ex
tended, `an :opening is'formed by the mouth of the
nozzle >andits supporting casing so that-the ex
haustblast >is caused to 'impinge tangentially
across the periphery oî’the wound package'be
~‘fore’ being 'drawn into the suction. nozzle mouth,
» ceíve',"engage, and‘tie the assembled yarn ends
into afsecureëkn’ot of the desired type, after which
the «surplusyarn4 beyond the knot is trimmed in
"thefusual mannen` -~Where ra mechanical knotter
is `used and Acarried 'by the‘tender, it is preferably
'actuated'in*correct_timedfrelation by the travel
of ’ thejknottenpa'st the winding unit.
"Thus each 4wimiing unit vcontinues to wind yarn
y
thereby'consi'derably enhancing the sweeping ac 60 >trom, a. supply masser bobbin ontoa package by
tion‘of the'air current to blow free, lift and draw
Vcontact.ofthe package with'. the driving roll, and
'oir thek loose end 'from the wound package into
»when `theyarn supplyfhas been exhausted, the
the suction nozzle.
_
Means may also be providedï'for- braking the
package' being wound during'it's reverseV rotation
so as to limit'the amount of yarn drawn'from'the
package immediately after the yarn end has been
found and drawn off by suction. 'When'th‘e cor
rect predetermined length of strand rhas been
sucked and drawn'fromthe unwinding package,
cam means, carried in part by the tender and `op
`erate’d'by the relative movement'ï'of the'tender
»
.
supply holder. isfrotated-«to- move the reservefyarn
plyz- into --.»w»inding-ofi` «.position, simultaneously
Uvingfthe-‘exhausted bobbiniinto anintermedi
azeipositionfor inspection `as‘to itscompletion
‘ o'rfezdiaustion'iand the> previous intermediate bob
«bin‘v is defied Íromits'supporting pin by the tilt
ing*
of'the pin said pin'is then Vrestored to its
7
upright position~ by the same movement, ready to
v'receive a fnew supply lmass "dropped onto it
1through the sii'deb'y the operative. Asl the oper
and winding unit, operateA to apply a'friction
ative drops the new bobbin into place, its leading
' member against the package to stop its- rotation,
75 ¿yarn vendlis held and preferably placed in the
thereby preventing needless wastefóf ïyarn.
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