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Патент USA US2409640

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Oct. 22, 1946.
a. MARcELLus
2,409,639
BOBBIN WINDING MACHINE
Filed Jull,r 8, 1942
.i5 Sheets-Sheet 1
CCL '22, 1946-
2,409,639
B. MARcELLus
BOBBIN WINDING MACHINE
Filed July 8, 1942
15 Sheets-Sheet 2
22|
(PFLANVmw)
INVENTOR
,Bron/f5
Marcc/lus
ATTORNEYS
Oct. 22, 1946.
a. MAncELLus
2,409,639
BOBBIN WINDING MACHINE
Filed July a, 1942
15 Sheets-sheet 4
6
INVENTOR
Broc lr.:
Marcel/u.:
0d. 22, 1946-
a. MARczLLus
¿409,639
BOBBIN WINDING “CHINE
Filed .my s. 1942
1s sheets-suns s 4
0d. 22, 1946.
B, MARCELLUS
2,409,639
BOBBIN WINDING MACHINE
Filed July 8, 1942
15 Sheets-Sheet 5
INVÈNT
.Brooks Marc e//z/.s
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ATTORNEYS
Oct. 22, 1946.
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a. MARcELLus
2,409,639
soenna wmmua MACHINE
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Filed July s. 1942
15 sheets-sheet '7
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0d- 22. 1946.
2,409,639
a. MARcELLUs
BQBBIN WINDING MACHINE
Filed July 8, 1942
15 Sheets-»Sheet 8
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“Brno/fs> Marc ellas
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0d. 22, 1946.
B, MARCELLUS
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2,409,639
Boßßm wnmms MACHINE
Filed July 8, 1942
15 Sheets-Sheet 9
INVENTOR -
?Brom/x15 Marce/fas
ATTORN EYS
o@ 22, 1946-
B. MARcELLus
2,409,639
BOBBI“ „INDING “CHINE
Filed July 8, 1942
15 Sheets-»Sheet 10
Brookä
Marcel/us
ATTORNEYS
’
Oct. 22,` 1946.
B. MARcELLUs
2,409,639
BOBBIN WINDING MACHINE
FiledlJuly 8, 1942
15 sheets-sheet 11
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B. MARcELLUs
2,409,639
BOBBIN WINDING MACHINE
Filed July 8, 1942
15 Sheets-Sheet 12
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INVENTOR
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Marce/lus
Oct. 22, 1946.
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a. MARcELLus
2,409,639
BOBBIN WINDING MACHINE`
~ Filed July a, 1942
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15 sheets-sheet 1s
INVENTOR
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Marce/lus
ATTORNEYS
Oct. 22, 1946.
2,409,639
B. MARcELLus
BOBBIN WINDING MACHINE
Filed July V8, 1942
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15 Sheets-Sheet 15
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ATTORNEYS
Patented Oct. 22, 1946
2,409,639
UNITED STATES PATENT OFFICE
2,409,639
BOBBIN WINDING MACHINE
Brooks Marcellus, Rockford, Ill., assignor to Bar
ber-Colman Company, Rockford, Ill., a corpo
ration of Illinois
l
Application July 8, 1942, Serial No. 450,129
57 claims. (Cl. 242-32)
The invention pertains to a machine for wind
ing bobbins of the type employed in loom shuttles
and commonly known as “cops” or “pirnsf’
The primary object of the invention is to pro
vide a machine capable of producing filling
wound bobbins automatically at a rate substan
tially higher than has heretofore been possible.
2
illustrating the yarn traversing device in associa
tion with each spindle.
Fig. 7 is a side elevational view of a bobbin and
showing somewhat schematically the manner in
which the yarn is wound thereon.
Fig. 8 is a fragmentary perspective View of a
chuck for gripping the butt end of the bobbin.
Fig. 9 is a fragmentary vertical sectional View
illustrating the manner in which the running
strand is led from a suitably supported yarn mass
to a bobbin being wound, and showing the parts
A further object is to provide a bobbin winding
machine embodying a series of winding units
operating to produce a plurality of filling-wound
bobbins simultaneously, with a driving and con
trol mechanism of an advantageous character
in the position occupied during the winding
common to the several units.
operation.
A further object is to provide an automatic
Fig. l0 is a fragmentary front elevational view
bobbin winding unit having a new and improved 15 cf the yarn supply mechanism.
automatic donning and discharge mechanism.
Fig, 1l is a fragmentary horizontal sectional
Another object is to provide in such a machine
view further illustrating the means for control
ling the running strand in its passage from the
. proved construction in combination with a new
yarn mass to the bobbin.
and improved form of traversing device.
Fig. l2 is a fragmentary front view of the de
20
A further object is to provide a winding ma
vice shown in Fig. 11.
.
an automatically operating bunch builder of im
chine having various mechanisms to be operated
Fig. 13 is a fragmentary perspective view illus
automatically and in a predetermined timed re
trating more particularly an escapement mecha
lation, and an effectual control means governing
nism controlling the release of bobbins one at a
the actuation of said mechanisms in proper se 25 time from the empty-bobbin magazinel and the
quencc.
The objects of the invention thus generally
stated, together with other and ancillary advan
means for receiving and temporarily supporting
the filling-wound bobbins until the new bobbin
has been placed in position.
tages, are obtained by the construction and ar
Fig. 14 is a front view of a bobbin magazine
rangement shown by way of illustration in the 3° with parts broken away and other parts shown
accompanying drawings forming part hereof, in
in section to illustrate the construction.
which:
Fig. 15 is a fragmentary perspective view of a
Figure 1 is a fragmentary front view of a bob
donning mechanism.
bin Winding machine constructed in accordance
Fig. 16 is a plan view of a shearing and clamp
with my invention and embodying a series of 35 ing device for seizing and holding the strand dur
winding units arranged side-by-side.
Fig. 2 is a fragmentary plan view on a some
what larger scale.
ing the donning operation, parts being broken
away to show the construction.
Fig. 17 is a fragmentary elevational view of the
Fig. 3 is a transverse sectional View somewhat
shearing and clamping device looking from the
schematic in character and illustrating the ar 40 right in Fig. 16.
rangement of the major parts of each winding
Fig. 18 is a fragmentary perspective view
unit.
illustrating more especially a bunch building
Fig. 4 is a fragmentary transverse sectional
mechanism.
view taken approximately in the plane of line
Fig. 19 is a fragmentary perspective view fur
45
4-4 of Fig. 1.
ther illustrating a yarn positioning means.
Fig. 4“ is a fragmentary sectional view showing
Fig. 20 is a fragmentary sectional view show
a portion of the gear train for driving the wind
ing the details of construction of the yarn clamp.
ing spindles.
Fig. 21 is a. fragmentary perspective view il
Fig. 5 is an enlarged fragmentary sectional 50 lustrating the mechanism for producing a feed or
view transversely of the machine and showing
builder motion, and the means for controlling
the means employed in each unit to rotatably
the starting and stopping of the machine.
support the bobbins during the winding opera
Fig. 22 is a fragmentary end elevational view
tion.
showing in particular the frame member at the
Fig. 6 is a fragmentary side elevational View 55 right-hand end of the machine with its cover
2,409,639
3
removed to illustrate certain parts of the drive
mechanism.
Fig. 22a is a fragmentary sectional view sub'
stantially on line 22e-22a of Fig. 22 and showing
a portion of the drive mechanism.
‘
Fig. 23 is a fragmentary sectional View taken
approximately in the line 23-23 of Fig. 22 and
illustrating other details of the drive mechanism.
Fig. 24 is a fragmentary perspective View of
a bobbin sorting and packaging means.
Fig. 25 is a schematic view illustrating the
control means governing the operation of the
machine.
Fig. 26 is a time chart of the main cam shaft
of the control means.
4
of the chambers being closed by removable
covers. Inasmuch as all of the winding units
are alike in construction and operation, it is
necessary to describe one only of these units fol
lowing which the driving and control means for
the machine will be described.
The machine in genera-l
In the preferred embodiment of my invention
the machine comprises a plurality of winding
units having a common drive and control mech
anism whereby the several units operate to pro
Bobbin holding means
Referring now to Figs. 2, 4 and 5, the bobbin
supporting means A comprises a spindle 6 pro
vided with a chuck ‘I for receiving the butt end
of bobbins b to be wound, and a tip holder or
tail center 8 releasably supporting the tip end
of the bobbin. The spindle (see Fig. 5) is suit
ably journaled in bearings provided in a tubular
extension `9a of a housing 9 stationarily supported
upon the longitudinal frame member 3a (Fig. 4).
Upon the rear end of the spindle 6 is ñxed a
pinion I0 (Fig. 4e) meshing with a spur gear
II which in turn is driven from a drive shaft
I2 extending longitudinally of the machine, this
shaft being common to al1 of the units (Fig. 2).
duce filling-wound bobbins simultaneously in
The housing 18 has a rear portion enclosing bevel
each operating cycle of the machine. As shown
the machine comprises an elongated horizontally 25 gearing I3 on the shaft I2 and a short shaft III,
the latter being connected with the spur gear
disposed frame, and the individual Winding units,
I I by means of intermeshing gears I5.
The bobbin chuck ‘I (Fig. 5) is of a construc
bodiment, are arranged side-by-side with the
tion adapted when the spindle is idle to receive
winding spindles disposed horizontally and ex
tending transversely of the machine in laterally 30 freely the butt end of a bobbin and when in
operation to grip the bobbin by the action of
spaced relation as shown «best in Fig. 2.
centrifugal force. As shown in Figs. 5 and 8, the
Referring now to Figs. 1 to 4, with particular
chuck consists of a plurality of jaws formed on
reference to Fig. 3, each of the winding units
lingers Iii pivoted intermediate their ends at I'I
comprises a bobbin holding means generally
upon a head I8 fast on the forward end of the
designated A for rotatably supporting the bobbins
of which ten are shown in the exemplary em
to be wound with yarn supplied from a yarn
spindle 6.
supply B. Below the spindle supporting means
larged to form weights I9, and the arrangement
is such that when the spindle is rotated at high
speed the jaws will be swung inwardly from their
pivots under the action of centrifugal force to
is a means C for receiving and temporarily sup
porting the wound bobbins after the same have
been released from the holding means A. D
designates an empty bobbin magazine having
an escapement device controlling the successive
release of empty bobbins onto an underlying
empty-bobbin carrier or donning slide E. After
a filled bobbin has been released from the wind 45
ing,` spindle and deposited in the receptacle C, the
donning slide E is advanced to introduce an
empty bobbin into operative position relative to
the winding spindle and as an incident thereto
to clamp the strand extending from the source
The rear ends of the jaws are en
grip firmly the butt end of a bobbin inserted
between the jaws.
The tail center 8 comprises a cup-shaped mem«
ber 2li shaped to receive the tip end of the bobbin
and mounted for movement into and out of en
gagement with the bobbin in a direction generally
axially thereof. The cup member is supported
through the medium of antifriction bearings in
the lower end of an arm 2I arranged for limited
movement under the influence of a spring 22
relative to an arm 23 fast on the rock shaft 2`fl
B to the filled bobbin. F designates generally
which extends longitudinally of the machine and
a shearing and clamping device operated in the
is common to all of the units. Relative move
advance of the donning slide. As the yarn is
ment between the two arms by the spring 22 is
being wound it is operated upon by a traversing
device G. Preliminary to the initiation of the 55<1imited by interengaging abutments 25 and 25a.
When the shaft 24 is rocked to carry the cup
winding operation, the traversing device occu
member 20 into engagement with the tip end of
pies a retracted position and at the beginning
the bobbin, continuing movement of the shaft
of the winding operation the thread is operated
operates through the arm 23 to place the spring
upon by an independent traversing device con
stituting a bunch builder H. From the receiving 66 .22 under tension thereby holding the cup mem
ber 2.5 yieldably against the bobbin.
means C the iilled bobbins are discharged down
Rocking motion is imparted to the shaft by
wardly and forwardly into pockets I by which
means of a disk cam 26 (Fig. 4) mounted on a
they are arranged for final discharge into under
main cam shaft 2l' extending the full length of
lying containers J (Fig. 4).
the machine and forming part of the control
The several winding units, together with the
driving and control means for the Various mech
anisms, are embodied in a machine frame com
prising a pair of end standards I and 2, upper
and lower rear bars 3 and 3“, (Fig. 4) and a pair
of front angle Vbars 4 and 4a, the latter being
supported forwardly of the frame by end brackets
5 (Fig. 2). The'end standards I and 2 are in
the form of hollow castings forming chambers
within which various parts of the driving and
control mechanism are enclosed, the outer sides 75
means common to the several units, the motion
of the cam being transmitted to the rock shaft
24 through the medium of a follower lever 28,
link 29 and arm 3l), the latter fast on the shaft
24. The cam 26 is shaped so as to cause the tail
center to occupy an elevated position upwardly
and to the left of the position shown in Figs. 3
and 4 during the rearward movement of the
empty bobbin by the donning slide as hereinafter
set forth.
5
2,409,639
Yam supply
6
the fingers against a running strand bearing
against the grid formed by the stationary pins 48.
Mounted upon the main frame above the wind
To facilitate threading of the strand through
ing spindles is a superstructure for supporting
the tensioning device, a yoke 54 is mounted upon
the yarn supply means B. This means comprises 5 the pivot pin 59 and provided with a plurality
a series of yarn masses from which individual
of lugs 55, one for each of the lingers 49. These
strands s are led downwardly to the various bob
lugs are engageable with the supporting heads
bins. As shown, the yarn masses are in the form
of large conical packages c (Figs. 9 and l0) en
49“ as shown clearly in Fig. 11 upon a swing
ing movement of the yoke in a clockwise direc
closed within individual housings 3|, the latter 10 tion. For convenience, the yoke is provided with
having open forward ends normally closed by
a handle 56. By movement of the handle the
covers 32 which are suitably apertured at 33 for
yoke is swung against the action of a spring 56“
the passage of the running strands. After pass
from the full line position to the broken line p0
ing over guide pins 34 disposed forwardly of the
sition shown in Fig. 11. In this movement of the
apertures 33, the strands s continue downwardly 15 handle the fingers 49 are swung forwardly
through tensioning devices 35 and then over guid
through an arc indicated by broken line positions,
ing elements 36 and 31 to the bobbin.
the foremost position being open or threading
The yarn masses c are mounted upon suitable
position. Upon release of the handle, the fingers
49 return to the full line position shown in said
ing lengthwise of the machine and forming part 20 figure in which they are held by their individual
of the superstructure, the housings 3i being also
springs in engagement with the running strand.
mounted upon said channel bar. At its opposite
Lint produced in the passage of the yarn
ends the bar 39 is supported upon a pair of stand
through the tensioning device is removed
supports 38 carried by a channel bar 39 extend
ards 49 mounted upon the upper ends of the end
through the provision of an exhaust system com
members l and 2 of the main frame.
25 prising an exhaust chamber 51 for each of the
The cover 32 of each of the housings 3| is sup
tensioning devices and an exhaust trunk 58 ex
ported for independent raising and lowering
movement and is yieldably held in either closed
or open position.
For this purpose, the cover is
tending lengthwise of the machine and connect
ed with each of the chambers 51 by means 0f a
flexible tube 59. Each exhaust chamber 51 is
pivotally supported upon the forward ends of two 30 formed in cooperation with the supporting plate
parallel arms 4I and 42 pivoted respectively upon
41 on the cover plate 32 by means of a member
rods 43 and 44 extending the full length of the
51a positioned on the side of the plate 41 oppo
machine and mounted at their opposite ends in
site the pivot pin 59 and provided with slots 69
the standards 49. Each of the covers has an
for the passage of the fingers 49. The Islots 99
upper end portion projecting when in its closed 35 are‘disposed adjacent the point of engagement
position above the casing and terminating in a
of the running strand with the tensioning device,
tongue 32a (Fig. 10). The arm 4I is pivotally
and the lint formed as an incident to the en
connected to this tongue and the arm 42 has a
gagement of the strand with this device is drawn
yoke 42*1 pivotally connected to the sides of the
through these slots into the chamber 51 and
cover and shaped to encircle partially the round 40 thence by way of ñexible tubes 59 to the exhaust
ed upper side of the casing. At its rear end, the
trunk 58.
lower arm 42 carries a counterweight 44a to facili
After leaving the tensioning device, the run
tate movement of the cover.
ning strand extends downwardly and rearwardly
To hold the cover yieldably in either open or
(Fig. 9) to the guide element 36 which is in the
closed position, an overcenter device is employed. 45 form of a pin carried by a suitable bracket 9|
This device comprises a curved link 45 having
secured to and extending upwardly and forwardly
one end connected by a contractile spring 46 to
from the upper longitudinal frame member 3, the
the channel rail 39 and the other end pivoted to
pin 36 being supported above the winding spindle
the arm 4i above and forwardly of its pivotal
and in a longitudinal plane disposed somewhat
axis 43. The operation of the device in holding 50 rearwardly of the chuck 1 on the forward end of
the cover either open or closed will be apparent
the spindle. Finally the strand is led downwardly
from a comparison of the full and broken line
over the guide 31 to the bobbin being wound, or
positions shown in Fig. 9.
if no bobbin is in position, then to a point below
The aperture 33 provided in the cover for the
the winding spindle where it is held in position
passage of the strand has a rounded edge so as 55 to be seized in the next winding cycle las will
to avoid undue chafing upon the strand, and to
presently appear.
facilitate threading of the strand through the
Empty bobbz'n supply
aperture the vcover plate is formed with a slot
49b (Fig. 19) terminating at one end in the aper
The empty-bobbin magazines D are mounted
ture and at its other end ln a notch 46a at the 60 forwardly of the Winding spindles with their
lower right-hand corner of the plate. Mounted
lower ends disposed somewhat above the hori
forwardly of the aperture is the guide pin 34.
zontal plane containing the axes of the spindles;
This pin is carried by a plate 41 extending for
and operatively associated with each of the mag
wardly from the cover plate.
azines is an escapement device controlling the re
The forwardly extending plate 41 provides a 65 lease of the bobbins one at a time onto the under
support for the tensioning device 35. The latter
lying donning slide E. As shown in Figs. 2 and
(Figs. l and 9 to 12) consists of a grid composed
13, each of the magazines comprises two side
of a plurality of fixed pins 49 and a series of in
plates 62 and a back plate 63 cooperating to form
tervening movable pins or ñngers 49, the latter
a Vertical channel adapted to receive and hold
mounted in suitable bearing heads 49a to swing 70 the stack of empty bobbins, the cross-sectional
on an upright pivot pin 59 carried by a bracket
shape of the magazine conforming substantially
5I on the supporting plate 41. The iingers 49
to the lateral dimensions of the rear ends of the
‘Dobbins and the front of the magazines having
extend through slots 52 in the plate 41 and the
a narrow slot 64 defined by the front edges of
pivotal ends of the fingers are acted upon by in
dividual contractile springs 53 tending to swing 76 the plates 62 to permit passage of the forward
2,409,639
7
nected by a web 89 to form a yoke to receive the
core of the bobbin adjacent the butt end thereof,
the ñngers being beveled to engage with the
shoulders b' formed at the butt end of the bobbin
(Fig, 3). The member B5 is pivotally mounted
upon a block 9U secured to the slide plate 93 and
end portions of the bobbins. The magazines are
supported in the present instance by means of
brackets 65 mounted upon the longitudinal front
frame member 4 with the lower en'd of the mag
azine spaced above the frame member to accom
modate the donning slide E (see Fig. 14) .
is yieldably held in upright position by a torsion
spring 9|, the lower edge of the web 89 engaging
the top of the block to limit movement of the
member by this spring. To support the rear end
of the slide, the bar B2 is extended as shown in
Fig. 15, a suitable bearing therefor being provided
on the gear housing 9.
The escapement device for releasing the bob
bins comprises a rectangular rocking frame 66
equipped with two pairs of bobbin engaging
lingers 91, 61B and 89, 68a. The rear end portion
of the frame straddles the lower end of the mag
azine and is pivoted to the bracket 65. rThe front
end of said frame is pivoted on a bracket 69 car
ried by the front longitudinal frame member da.
The fingers 61 and 61a are secured to one side of i. . in
the frame and the fingers 68 and 68“ to the other
side, the former being of a length to engage with
the lowermost empty bobbin (Fig. 14) when the
To reciprocate the slide, an actuating arm 92
mounted upon a rock shaft 93 has its upper end
pivotally connected to the slide bar 82. Said rock
shaft is common to all of the units and on its
extreme right-hand end (Fig. 22) it carries a
cam follower 94 engaging with a cam 95 fast on
frame occupies its normal position, and the other
fingers B8 and 6|!a being somewhat shorter and 20 the main cam shaft 21.
The bobbin carrying members 94 and 85 of the
adapted when the frame is rocked from its nor»
donning slide are yieldably mounted so as to
mal position to enter between the lowermost
bobbin and the next succeeding bobbin.
permit return movement of the slide after the
The esoapement frame normally occupies the
tail center ß has been swung into its operating
position shown in Figs. 13 and 14, being held in 25 or holding position relative to the new bobbin.
this position by means of a contractile spring 19.
In the donning motion, this tail center is held
To rock the frame for the purpose of releasing
the lowermost bobbin, a bell crank 'Il is pìvoted
by its cam 26 in an elevated or withdrawn posi
tion so that it does not interfere with the advance
in a suitable bearing on the bracket 69 and has
of the ‘slide and the empty bobbin thereon. In
one arm connected with the frame by means of 30 order further to insure against damage to the
a link 12 and its other arm pivoted to an actu
parts, the actuating arm 92 is yieldably held in
ating bar 13. The latter extends lengthwise of
a predetermined position on the shaft 93 by means
oi a spring 96 acting to permit rocking motion
the machine, being common to all of the units,
and is arranged for actuation by a cam 14 (Fig.
of the shaft independently of the slide in the
13) on the main cam shaft 21 and having a fol
lower 15 fast on the rock shaft 16 extending
transversely of the machine below the main frame
member 4. The rock shaft carries at its forward
end an arm 11 connected by a link 18 to the actu
ating bar 13.
To prevent breakage of the parts
in case any of the escapement fingers fail prop
erly to clear the bobbins, the link 12 is preferably
made compressible. As shown in Fig. 14 it con
sists of two telescoping parts 19 and B9 and a
compression spring 8| operative in the movement
of the actuating bar 13 and bell crank 1| to
transmit a yieldable force to the rocking frame.
Denning slide
Upon the release ci empty bobbins from the
magazines D through the operation of their es
capement devices, the bobbins drop onto under
lying carriers on donning slides (Figs. 3 and 13).
Each carrier is mounted for movement from a
normal position beneath its magazine rearwardly
event that the latter should be interrupted in its
donning movement. As seen in Fig. l5, the spring
96 normally tends to hold in interengagement
with each other two abutments 91 and 98 respec
tively rigid with the actuating arm 92 and an
40 arm 99 fast upon the rock shaft 99.
Fastening strand to new bobbin
Movable with the donning slide E is the means
F adapted to position and hold the strand for
engagement by the butt end of the empty bobbin
as it is introduced into the chuck 1. In this
connection, it will be understood that the strand
is extended downwardly from the guide 31 for
engagement by said device either by reason of its
50 connection with the previously wound bobbin
temporarily supported by the receptacle C or be
cause of the action of a thread positioning device
to be presently described.
The means provided for this purpose comprises
55 in the present instance a plate |99 (Figs. 15, 16 and
17 ) secured to the underside of the block 9|) and
having an extended end with a V-shaped notch
lill therein. Fixed to the underside of this plate
is a stationary blade |0_2 and a movable shearing
60 and clamping blade |03, the latter being inter-
to introduce the empty bobbin thereon into the
chuck 1 of the spindle supporting means A pre
liminary to the movement of the tail center 9 by
its cam 2E into holding engagement with the tip
end of the bobbin. The bobbin carrier in the
present instance comprises a bar 32 (Figs. 13 to
posed between the blade |99 and the stationary
17) slidable in ways provided in the bracket 65
blade |02. The parts are pressed together by
means of a compression spring |04 surrounding
(Fig. 14). To one side of the bar 32 is fastened
a plate 83 on which is mounted at spaced points
a stud |05 which is anchored in the plate |09
a pair of upright members 84 and B9 (Fig. 15), B5 (Fig. 17).
one for supporting the tip end of the bobbin and
The movable blade |93 has rigid therewith an
the other the butt end thereof. The member 84
actuating arm |96 and positioned in the path of
is in the form of an arm having its upper end
this linger so as to be engaged thereby in the
movement of the donning slide is a stationary
notched slightly so as to form a recess for the
bobbin. This arm is yieldably held in upright 70 stop |91. As the slide advances the depending
position by a spring 86 and interengaging stop
strand is positioned by the notch IBI and the
shearing blade |03 actuated to sever the strand
means 81.
The other supporting member 85 is in the pres
and at the same time clamp the same so as to
hold it in the path of the butt end of the bobbin
ent instance in the form of a sheet metal stamp
ing providing a pair of spaced fingers BB con 75 as the latter is inserted into the chuck 1, thereby
2,409,639
9
binding the strand to the bobbin preliminary to
the winding operation. As will be seen from Fig.
22, the cam 95 is so shaped that after a short
dwell in its advanced position the donning slide
is quickly returned to its initial or normal po
sition beneath the empty-bobbin magazine C.
Near the end of such return movementI the ac
tuating arm | |15 of the shear blade | |13 engages
a second fixed stop |08 on the bracket 65 to open
the shear preparatory to the next operating
cycle.
Bunch builder
Before the main winding operation is started,
10
for the shafts ||5 and |28 and also for a shaft
|28a for certain of the idler gears of the train |29.
The control cam |2| and its follower together
with the rack bar |23 and its connection with
the rock shaft ||I are suitably enclosed Within
the left-hand standard | of the main frame of
the machine. It will be understood that the rock
shaft ||| extends the full length of the machine
and carries a traverse pin ||l9 for each of the
units. As shown in Fig. 2, the torsion spring |20
is anchored to the right-hand frame standard 2.
M aiu traverse
Upon the completion of the bunch building
operation, the main traversing devices G are ad
vanced from normally inactive or retracted posi
tions relative to the Winding spindles into en
gagement with the running strands and thence
it is desirable to form upon the bobbin at the
butt end thereof a small mass of yarn commonly
termed a “bunch” for the purpose of facilitating
detection in the loom shuttle of the approach of
the end of the yarn supply on the shuttle. For
advanced gradually with a feed motion in a
this purpose I provide a bunch building mech 20 direction axially of the spindles to cause the
anism adapted to wind a predetermined quantity
yarn to be Wound in successive layers shift
of yarn onto the bobbin and including a special
ing progressively to produce filling-wound bob
traverse effective only during this prelimiary op
bins. In the present instance, each of the units
eration and adapted to control the lay of the
embodies its own traversing device, comprising
yarn whereby to insure the building up of a bunch 25 principally a cylindrical cam |32 (Figs. 5 and 6)
of a size adequate for purposes of detection and
encircling the winding spindle and mounted for
yet avoid the winding of an unnecessarily large
movement in a direction axially thereof. Said
amount of yarn for this purpose.
traverse cams form per se no part of the present
Referring now to Fig. 18 of the drawings, this
invention, being the invention of Burt A. Peterson
bunch building mechanism comprises a traversing 30 as set forth in his copending application, Serial
pin |09 mounted on an arm IIII fast on a rock
shaft I||. Loose on the shaft ||| is a slotted
crank arm ||2 constantly oscillated so long as
the winding spindles are in operation by a cam
No. 428,993, ñled January 31, 1942, now Patent
No. 2,326,307, issued August 10, 1943. Briefly
stated, each of said cams provides two oppositely
sloping cam surfaces |33 and |34 moved suc
||3 acting through a follower ||4, rock shaft I I5, 35 cessively into engagement with the running
arm ||6 and link I I1, the latter connected with
the slotted arm ||2.
oscillatory motion imparted to the crank arm
I I2 is effective to rock the shaft ||| and thereby
the pin |09 depending upon the position of an
arm Ila pinned to the rock shaft and adapted
to engage with an arm ||9 rigid with the crank
arm ||2. This motion transmitting connection
strand as an incident to the continuous rotary
motion of the cam. At a point immediately above
each bobbin being wound, the strand is guided
by a finger |35 (Fig. 9) acting to restrain the
strand against lateral motion as the cam sur
is effective only for the relatively short period
of time required for bunch building. At such f
faces engage the same to shift it alternately in
opposite directions on the axis of the bobbln.
The finger |35 is mounted on the rail adjacent
the traversing cam and somewhat below the
guide 31 which is mounted on a bracket |35”.
times the arm ||8 is held against the arm ||9
by the action of a torsion spring |20. At other
times the arm I I8 is moved out of the range of
oscillation of the arm H9, by the action of a
upon a rail I 36 (Fig. 21) extending the full length
of the machine and having rigid with its op
posite ends slide plates |31 guided in ways |38
cam |2| on the main cam shaft 21. For this
purpose the shaft ||| has loose thereon a spur
formed on the inner sides of the end standards
| and 2. The rail is of channel section except
The cams |32 for the several units are mounted
pinion |22 meshing with a rack bar |23 to which
that at spaced points it is constructed to provide
is connected a follower |24 bearing on the cam
|2| under the action of a contractile spring |25.
The pinion |22 has a lost motion connection with
the rock shaft ||| provided by an arm |26 rigid
with the pinion and an arm |21 fast on the shaft.
bearing blocks |39 in which the cams are rotat
ably mounted. In the present instance, each of
In the relation of the parts shown in Fig. 18
the arms | I8 and | I9 are in abutting engagement
so that the cam l |3 is effective to oscillate the
traverse pin |09. When, however, the rack bar
|23 is drawn downwardly by the cam I2 I, the lost
motion in the connection between the pinion |22
and the rock shaft is taken up and the arm |21
then actuated to rock the shaft ||| sufficiently
to remove the arm ||8 thereon out of the range
of oscillation of the arm ||9 and at the same
time swing the traverse pin |09 into an elevated
inoperative position (Fig. 4).
The actuating cam ||3 for the bunch building
traverse is mounted upon a shaft |28 (Fig. 18)
driven from the main drive shaft I2 by a speed
‘ reducing gear train |29. This gear train together
with the cam and its follower are enclosed within
a housing |30 (Figs. 2 and 4) providing bearings
the cams has fixed on its rear end portion (Fig.
5) a bearing sleeve |43 supported in a bearing
block |39 by an antifriction bearing |4|. Suit
able clamp means |42 is provided for removably
securing the traverse cams in position in the
bearing blocks |39.
' Continuous rotary movement is imparted to
the several traverse cams from a common drive
shaft |43 (Fig. 2). For this purpose, worm gears
|44 are iìxed on the shaft |43 at spaced intervals
corresponding to the lateral spacing of the units.
Each of said gears meshes with a Worm |45 rigid
with a bearing sleeve |40. To enclose this worm
gearing and to support the shaft |43, suitable
housings |43 are mounted upon each of the
bearing blocks |39 of the channel rail |36.
During the winding operation a gradual feed
ing motion is imparted to the cam supporting
rail |36 by means of a driven shaft |41 (Fig. 21);
and at the end of the winding1 operation the feed
is interrupted and the rail is returned rapidly by
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