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Патент USA US2408589

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Oct. .1, 1946.‘
$408,587
J. w. TUCKER
, TEXTIL-E MACHINERY
5 Sheets-Sheet 1
Filed'Jatn. 11, 1945
I
.93
9/’
I ‘YE-A
INVENTOR
Oct. 1, 1946.
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.1. w. TUCKER
‘
2,408,587
TEXTILE MACHINERY
Filed Jan. 11,- 1945
I
3 Sheets-Sheet 2
INVENTOR
Oct. 1, 1946.
J. w. TUCKER ,
, 2,408,587
TEXTILE MACHINERY
Filed Jan. 11, 1945
3 Sheet's-Sheet 3
'INVENTOR
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Patented Oct. 1, 1946
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Lasts?
UNITED‘ STAT 121'sv PATENT ~ oFncE]
. 2,408,587
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TEXTILE MACHINERY‘ ,_
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Application
JohnJanuary
W.v Tucker,_Manchester,
.11, 1945, Serial No.
Ga.‘1572.320
' 12 ‘Claims.
I r
(Cl. 57-4-53)
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1
Figure 2 is an end view of the shafts taken
This invention relates to' textile manufacturing
from Figure 1 which simulatethe motions made
and more particularly to a means for do?ing
spinning frames. In the manufacturing of tex
tiles for the past few decadesit has been common
practice to doif spinning frames by hand. That
is, spinning frames. are rununtil ‘the bobbin on '
each spindle of the spinning frame has the de
sired amount of yarn on it, then the frame is
when the dofiing procedure isperformed by hand.
Figure 3 is a top view of the upper bobbin
holder ‘shown on the shaft in Figure 2.
Figure 4 is a top viewv of. the lower bobbin
holder shown on the shaft in Figure 2." ‘
r. 4
Figure 5 is’ an end view showing the cams ‘and
mechanism used to operate the dof?ng machine.
completely stopped and eachrbobbin of yarnis
Figure _6 is an end‘view of. the mechanismused
removed by hand one at. a time andjan empty 10
to perform the positive motion of moving‘the
bobbinis placed byv hand on‘ the ‘spindle to‘ be
?lled with yarn. - After all the full bobbins have
been removed and empty bobbins have v‘been
do?ing machine from one spindleto another and
holding the dof?'ng machine in'the required‘exact
been ?lled with yarn and‘ the process of do?'ing ‘ l
and stationary position while the dof?ng process
is being performed by the do?ing mechanism.
For ‘the, benefit: of clearness the frame work
the frame is repeated.
which supports the'element's of the inventionand
placed on the spindles the spinning frame is again
started and run until the empty bobbins have >
This process goes on con
the bearings arev not shown onv the drawings and
tinuously in many textile mills and is a very costly
are notclaimed as a part of the invention.
and laborious process. It usually takes be
tween ten and twenty minutes to doffva frame 20 In the process of’ dO?flI'lg a spinning frame it
is necessary, after the bobbins have been‘v?lled
and while the process ~of do?ing is being carried‘
out, no production is being made as it is necessary
with yarn, to lower the traverse rail to the lower
to stop the frame beforeit can be doffed. Spin
partf'ofithe bobbin and allow the yarn'tobe
‘frames ?nd it necessary to work all day in a
stooped position. After years or even months of
bobbin with his right hand above'the lower: part
wound s'everaljtimes around thisportion of 4' the
ning frames are built in such a manner that the
spindles which rotate the bobbins are so ‘close: ' bobbin 7before the. frame‘ is brought to '‘_a- stop.
to the floor that the workmen who doif the“ After the'framéjs stopped, the doffer inthe proc
ess of do?ing‘thelmachine takesa hold onithe
of the bobbin. where‘ the yarn has'been wound
working in this stooped position many of the
workmen ruin their physique’ by becoming hump-__ 30 on the bobbin last. H As the‘do?er lifts 'thebob
bin fromthespindle, yarn is pulled off the lower
backed or stoopshouldered.
.portion of the bobbin and the upward ‘movement
It is an object‘ofthis invention to perform the
of the bobbin'c'auses theryarn towbe unwound
process of do?ing in a more rapid manner by
the use of machinery'than is possible to do so by
from the lower portion {of the bobbin onto the
hand.
spindle. The :ff'ullbobbin of yarn, is completely
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‘Another object of this‘invention is to keep "the*- .remoyed from the spindle andwhile it is still held
spinning frame in production more hours per day
and therefore increase the mill output of yarn '
or decrease the number of spinning frames‘ neces
in the doffef’s. right handkan empty bobbin is
forced onto the'spindle by the left hand. .As the
"bobbin is forcedonto thespindle, it causes the
40 ~yarn that has been previously .wound around the _
Another object of this invention is to‘reduoe spindle-to become wedged between the bobbin
the number of workmen necessary ‘to perform
'and the spindle: v:A slight jerkon the full'bobbin
the operation of do?ing and therefore reduce the ‘
held in the righthand will then cause‘ the strand
manufacturing costs and increase'the company
of yarn to'bre‘akan'd thus free the full bobbin of
Another object of this invention is to’ provide‘ ' yarn from'the spinning frame.‘ Also, by 'wedgin'g
'the yarn between the: bobbin and the spindle, the
a means of do?ing whereby the performance of
yarn Will be ?rmly heldv atone end so that the
the operator will not be hazardous or injurious
sary for the ‘desired production.
pro?ts.
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to the workers’ physical being.
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process of spinning the yarn onto the bobbin may
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Other objects and advantages of this invention
be continued when‘ the spinning frame is again
‘will be more readily seen and understood after‘ 1
put into operation. ‘
The, above description of ' thev motions per‘
an understanding of the‘ following description
and accompanying
drawings:
,
s I
Figure 1 is a side elevation view'of theinven
tion.
formed during ‘the process, of dof?ng a spindle'is
well known among those trained in the art of
textile manufacturing and is only given hereto
2,408,587
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show that the movements described above are
on shaft I14 and are held in place on the shaft
simulated in this invention.
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by sleeves I16 and set screws I78 (see Figure 5).
In Figure 1 is shown the motor 2 which con
Firmly attached to'arms I68,‘ I16 and H2 by
tains shaft 4 on which is carried pulleys 6 and B.
welding or other suitable means are studs I66, I82
Pulley 6 drives shaft I2 by means of belt I6. 011 5 and I64 which are followers of cams 46, 42 and
shaft I2 are securely mounted pulleys I4, I8 and
44 respectively, Arms I68, I16 and I12 contain
26 (see Figure 5) by means of hubs and set screws.
slots I86, I88 and I 96 respectively and are con
Also mounted on shaft I2 is pulley I6 which is
nected to shafts I92, I94 and I66 (see Figure 2)
free to rotate around shaft I2 and is held in its
‘by means of sleeves I98, 206 and 262 and studs
proper place along the shaft by guide 22 which 10 204, 205 and 268 respectively. Shafts I92, F94
is ?rmly attached to shaft I2 by set screw 24.
and I 96 are more clearly seen in Figure 2.
Bearings 26 and 28 support shaft I2 and its
In Figure 2 are shown shafts I92, I94 and I99.
pulleys. Pulley 26 which is secured to shaft I2
Studs 204, 266 and 298 are securely fastened to
by means of its hub 2I (see Figure 5) and set ‘ sleeves I96, 260 and 262 which are secured to
screw 23 drives chain belt 30 which in turn drives 15 shafts‘ I92, I94 and I 66 respectively, by welding
shaft 32 by means of pulley 34 which is ?rmly
or other suitable means. Shaft I92 slides smooth
attached to shaft 32 and held in place by hub 36
ly Within hollow shaft I94 and both shafts are
and set screw 38. Shaft 32 has ?rmly mounted
guided by ?xed sleeves 2H1 and H2. Shaft I96
on it, cams 40, 42 and 44 and bevel gear 46 hav
is guided in its movements by stationary sleeves
ing hubs 48, 50, 52., and 54; and set screws 56, 58, 20 2I4 and H6. The lower bobbinholder 2I6 is
69 and 62 respectively, which hold them ?rmly
attached to shaft 32. Bearings 64 and 66 support
suitably attached to shaft I94 and held in place
on the shaft by sleeves 229 and 222 and through
shaft 32 and. its cams and pulley and bevel gear.
bolts 223. One end of lower bobbin holder 2I8
Bevel gear 46 meshes with bevel gear 68 which
?ts onto a bobbin of yarn 224 on the spinning
is rigidly attached to shaft 16 and held by hub 72 25 frame and. the other end embraces shaft 596
and set screw ‘I4. Shaft ‘I0 is supported by thrust
which is so designed to act as a cam and cause
bearings 16 and ‘I8 and also has ?rmly attached
to it bevel gear 80 which is held in place by set
whichever may be desirable at the proper time in
screw 82.
the operation of dol?ng the spinning frame. The
bobbin holder 2I8 to grip or release the bobbins,
Bevel gear 86 meshes with bevel gear 84 which 30 upper portion, I92-'—A, of shaft I92 at point I93
is rigidly mounted on shaft 86 by means of set
becomes separate and is so designed that the
screw 83. Cylindrical cam 90 is ?rmly attached
upper part, I92-A, may rotate about and on the
to shaft 86 and held in place by set screws 92 and
lower part. The top part of the lower portion
94. Thrust bearings 96 and 98 support shaft 86
of shaft I 92 is reduced in diameter to fit the hol
and cam 96 and bevel gear 84. "Wheels I66, I62
low part at point I93 of the upper portion, I92-A,
of shaft I92 which permits the top portion,
and I64, I66 mounted on shafts I08 and III) re
spectively, support the entire machine.
I92-A, of shaft I92 to rotate on the lower portion
Also shownin Figure 1 is the empty-bobbin
of shaft I92. The upper bobbin holder 226 (shown
box H2 having throat H4, through which the
in Figure 3) embraces the upper portion, I62—A,
‘empty bobbins pass, and agitator II6 which is 40 of shaft I92, and the enlarged portion 226 of
mounted on shaft II 3.
Shaft H8 is made to ro
tate clockwise and then counterclockwise by
shaft I92 acts as a cam to cause bobbin holder
Rack I22 reciprocates through guide I24 which
226 to grip or release the bobbin of yarn 224 after
the bobbin has been raised above the spindle by
bobbin holder 2IB and shaft I94. Upper bobbin
is secured to bobbin box I I2. The angularly bent
extension of rack I22 is secured to rack I26 by
“ holder 226 is vertically stationary and does not
move vertically with shaft I92. Bobbin holder
means of gear I2Il'and reciprocating rack I22.
fusion welding or other suitable means. Rotat~
2.26 is held vertically in place by sleeves 229 which
vably connected to rack I26 is arm I28 by means
are rigidly held together by connectors 232 and
of union I36. Arm I28 extends through bearing
held vertically in place by arms 234 which are
I32 which contains pin I34 which ?ts into groove 50 rigidly connected to sleeve 2I2 by fusion welding
I36 on arm I28. Member I38 is slidably mounted
or other suitable means. Sleeve 212 has ?rmly
on platform I46 which supports bearing I32 and
‘connected to its inner side stud 233 which ?ts
stop piece I42. Arm I28 also extends loosely
into the groove 238 on shaft I 92. Also bobbin
through member I33. The bent extension of arm
holder 226 has ?rmly connected to its inner side
I28 carries bobbin holder I44 which in turn carries 55 studs 246 which ?t into groove 242 on shaft I92.
the leaf spring I46 which holds the bobbin after
As shaft I92 is moved upward (by cam action
it passes through throat H4. Bumper I46 forces
explained later) groove 233 and stud 236 will cause
the bobbin into spring I46 as arm I28 moves later
the upper portion, I92—A, of shaft I62 to rotate
ally under the bumper. Spring I59 is attached
approximately 90 degrees; during the same time
to hearing I32 and member I38. Bearing I32 is 60 the enlarged portion 228 will enter into its proper
rigidly attached to platform I46, therefore, spring
place in-bobbin holder 226 causing the bobbin
I56 causes member I38 to move horizontally until
holder to grip the bobbin of yarn, and as the
stud I52 on member I38 reaches stop 142; this
upper portion, I 92—A, of shaft I92 is rotated,
movement causes the upper platform I31 on mem
stud 240 which is attached to the bobbin holder
her I 38 to slide underneath the opening of the 65 and ?ts into groove 242 will cause bobbin holder
throat II4 when bobbin holder I44 is not under
‘226 to rotatewith the upper portion, I92-A, of
the throat opening. Rack I26 is reciprocated
shaft'I92.
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by means of gear I 54 which is supported by shaft
Bobbin holder 226 has flanges 244 which per
I56. Gear I54 is made to rotate clockwise then
mit the holder to open and close its grip and still
counterclockwise by means of connecting rod I58 70.be held in place by sleeves 229 and 236.
which is rotatably connected to gear I 54 and gear
In Figure 3 is shown the upper bobbin holder
I4 by means of studs I69 and I62 and held in
226 having prongs 246 and 248. Plates 256 are
place by pins I64 and I66 respectively (see Fig
welded to prong 248 and are rotatably connected
ure 5).
to prong 246 by pin 252. Leaf springs 254 and
Arms I68, mi and 112 are rotatably mounted’ 75 256 are attached to plates 259 by means of pins
2,408,5871
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and the dof?ng'machine will be on "its tracks“,
258. The springs 254 and 256 are so designed to‘
along the length of. the frame and motor 2 may
apply enough pressure to' prongs 246 and 248 to
be'started by making proper contact with the
keep the lugs 240 within their grooves 242..‘
electric source. At the beginning of the do?ing
In Figure 4 is shown lower bobbin holder 2I8
having‘ prongs 5260 and ‘262 whichare held in 5. procedure, shafts I92, I94 'and7I96 will be just
pl'aceby sleeves 220 and 222 and pins223. Leaf
in line with the ?rst spindle on. the spinning
springs 264 and 266‘ are ?rmly attached’ to pins
frame,‘ bobbin holder 2I8 will be in a position
268 and 210 respectively:
The springs 254 ‘and
just over the top, of the first bobbin and lever cam
266' are designed to apply enough pressure to
I96 will be in the proper position to cause the
prongs 260 and 262 to cause the proper parts‘ to 10 front jaws of bobbin holder 2I8 tobe open. Cy
?t" snugly against the shaft I96 and cause the
lindrical cam 90 will be in such a position that
prongs'to release bobbin 224 at the proper time.
pin 93v will have just entered the straight‘ portion
In Figure 5 is shown shaft I56 supported by
bearings I55.
of groove 9I and will. hold the doii‘ing machine
Gear I54 is securely‘fastened-to
in a horizontally stationary position during the
shaft I 56’by meansof set screw I 53. Pulley I4 15 ‘process of dof?ng the ?rst bobbin.
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is securely mounted on shaft I2 and held in place Shipper handle Z'IB'Y‘mayl be lowered and cause
by means of set screw I3.
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shipper 2-12 to place'belt ID on pulley’ I‘B.
Shaft
Shipper 212 is held and supported by bearing ~
I2, on‘which pulley I8 is rigidly mounted, ‘will
2'14 which permits Shipper 212 to slide horizontalbe forced to rotate in counterclockwise direction.
13’- PI‘OHgS 215 of shipper 212 make contact with 20 The motion of shaft I2 is transmitted to ‘shaft 32
the leather belt III and cause belt II) to travel
by means of chain belt 39 and gears 29 and34.
either on ?xed pulley I8 or loose pulley I6. ShipAs shaft‘ 32 rotates, ca-ins ‘49, 42 and 44 will act
per " handle 218 is attached to! ‘shipper 212 by
against levers I63, I19 and I12 respectively, and
means of stud 289 and slot 292; the shipper hancause shafts I92, I94 and I95 respectively, to be
1116 273 is rotatably mounted 011 Stud 294' Which 25 raised or lowered in a verticalv position. Bevel
is securely attached to supp0rt286 by Welding‘ or
gear 46 will transmit power to shaft lo'by means
' other means.
of bevel gear 68 which in turn will transmit power
vAlso Figure 5 more clearly shows the cams 49,
to shaft 86 by means of bevel gears 89 and 84.
42 and 44 which operate and control‘the actions
Each "time shaft I2 makes a revolution it will
of arms I68, I10 and I12 by means of stud fol- 30 cause gear I54 to make a partial revolution in a
' lowers I89, I82 and I84 respectively.
clockwise and then a counterclockwise motion.
By means of shipper 212 and idler pulley [6f
This will cause‘ arms I28 and I22 to move for
motor 2 may be allowed to run without operating
the'do?ing mechanism. As long as belt I 0 is
ward and backward in a horizontal direction. As
arm I22 moves it will cause, by means of gear
traveling'on idler I6, shaft I2 will not rotate. 35 I 29 and shaft H8, the agitali?r “5 t0 P20118309
At the proper time, by use of shipper 212, belt
clockwise'and counterclockwise and aid the empty
I0 can be made to travel on pulley I8 and thus
bobbins in their passage through throat H4. As
cause the dof?ng mechanism to operate.
arm I28 .is moved forward, pin “'34 and gTOOVB
In Figure 6 is shown shaft I98 having wheels
I36 will cause bobbin holder I44 to rotate approx
I06 and I82 securely mounted thereonjand held 40 imately 90 degrees and place an empty bobbin
just‘over the top of an empty spindle on the spin
in place by collars I9! and set screw I93. Bear
ings 91 and, 58, mounted on shaft I98 support
the frameworkof this embodiment of this;in-,
vention.
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ning frame.
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As cam 42 lowers rod I94 and'bobbin holder
2I8. the open jaws of bobbin'holder 2I8 pass
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, Shaft 86} is shown having cylindrical cam 99 45 along the outside edges of the full bobbin of .yarn
224. Gain 42 lowersholder 2I8 until it is at a
securely mounted thereon. I Cylindrical cam 99
stud 93 ?ts. Stud 93 is ?rmly attached to plate
position about 11/2" above the bottom portion of
the yarn. When holder 2I8 reaches the above
99 is so designed that as it rotates, stud 93'comes
into contact with groove 9 I, this causes the‘whole
machine to move forward until the straight porl
I196 ?ts into the rear jaws of holder 2&8 and
causes the front vjaws to close and grip bobbin
224.’ Immediately after'the holder 2H3 has a
has groove 9I formed on its surface into which
described position, earn it lowers lever I12 and
95 by welding or other means and the plate 95
is held in the recessed portion of the floor. Cam > 50 shaft I96 until the enlarged cam portion of shaft
' firm grip on-bobbin 224, cams 42 and ‘44 act si
'tion of the groove (see Figure 1) comes into con-v
tact with stud 93. While the straight portion’, of ~‘ 65 multaneously to raise‘ rods I94 and I96 upward.
Bobbin ‘holder 2I8 is-at'tached to rod I94 and is
the groove is in contact with stud 93 theimachine
therefore raised upward and removes bobbin 224
will move neither forward nor backward and re-v
from itsspindle. Rods I94 and I'96"a_re raised
quires-no brake mechanism to holdthe machine
at the same speed inorder that the enlarged cam
in the desired position. Studs 93 have the same
spacing as the spindles on the‘ spinning frame. 60 portion of rod I96‘ may not allow holder‘2l8 to '
lose'its grip on bobbin 224. As bobbin 224 is
raised upwards, yarn from the lower portion of
the bobbin will be reeled off the bobbin and will
By means of the studs and the cylindrical cam,
the dofling machine is moved fromone spindle'to
the next and is stopped at each spindle, just long
enough for the do?ing mechanism to remove from
entwine itself around the spindle.
the spindle, the full bobbin of yarn and'replac'e = 65
it by an empty bobbin. Wheels I00 and I02 are
shown on tracks 15 and 11 which form recesses
Bobbin 224 will be raised until it has entered
the open jaws of bobbin holder 2.26, and will be
held in this raised position until cam 49 has
raised lever IE8 and shaft I92 into such aposi
tion that theienlarged cam portion 228 of shaft
' The motor is driven from D. C. or'A. C.'source
using an overhead trolley line from which the 70 I92 has entered the rear jaws of bobbin holder
226 and has caused the front jaws of bobbin hold
current may be taken and using the track 11 as
er 226 to have a ?rm grip on bobbin 224. At this
a ground.‘ This means of transmitting current is
stage, cam 44 causes shaft I96 and its enlarged
old in the art and is notclaimed as a part of) the
cam
portion to move further upward in order to
invention.
in
the
flooring'19.
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'.~ .In-operation, the spin ning frame will-be stopped ' .25 allow. bobbinv holder 2I8 to release its gripon
2,408,587
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bobbin 224. By this time,>cam 40 has caused
What is claimed is:
1. In combination with a spinning machine,
having conveyor tracks alongside the frame, a
do?ing device comprising, an empty bobbin con
shaft I92 to move high enough that the curved
portion of groove 2% has reached pin 236. Fur
ther raising of shaft £92 will cause, by means of
groove 238 and pin 236, the upper portion, I92-A,
of shaft 582 and bobbin holder 226 to rotate ap
tainer, an arm and bobbin holder for transferring
empty bobbins from said empty bobbin container
proximately 90 degrees and move bobbin 224out of
to a position directly over a spindle of said spin
the way so that an empty bobbin may be placed
ning machine, a second arm and bobbin holder
on the spindle from which bobbin 224 was re
to do? the spindles of said spinning machine, a
moved.
10 third arm and bobbin holder to remove the full
When bobbin 224 has been moved out of the
bobbins of yarn from the grasp of said second
way, rod I28 is moved forward according to the
bobbin holder, and a cylindrical cam for convey
previous description of its movement and an
ing said dof?ng device along said tracks.
empty bobbin held by spring gripper I46 in bob
2. In combination with a spinning machine, a
bin holder I44 is moved from bobbin box II 2 to 15 do?iing device comprising, an empty bobbin con
its position just over the emtpy spindle. When
tainer, an arm and bobbin holder for transferring
the empty bobbin is placed over the spindle, bob
empty bobbins from said empty bobbin container
bin holder 2 I8 which has pust released bobbin 224
to a position directly over a spindle of said spin
is
position to grasp the empty bobbin. Cam.
ning machine, a second arm and bobbin holder to
M lowers shaft I96 and its enlarged cam portion
doff the spindles of said spinning machine, a
causes bobbin holder 2I8 to ?rmly grip the empty
third arm and bobbin holder to remove the full
bobbin, then cams 42 and 44 simultaneously lower
bobbins of yarn from the grasp of said second
shafts 881i and I95 respectively, which causes the
bobbin holder, vertical shafts on which the sec
empty bobbin to be placed on the spindle. As the
ond and third arms and bobbin holders operate,
empty bobbin is placed on the spindle, the yarn, 25? and cams to operate said second and third arms
which is entwined around the spindle and con
and bobbin holders on said vertical shafts.
nected to the bobbin or yarn that has just been
3. In combination with a spinning machine
removed, will became wedged between the spindle
having conveyor tracks alongside the frame, a
and the inside of the empty bobbin. Further low
do?ing machine comprising, an empty bobbin
ering of the empty bobbin will break the yarn 30' container, an arm and bobbin holder for trans
and release the full bobbin of yarn 224 from the
ferring empty bobbins. from said empty bobbin
spinning frame. While the empty bobbin was
‘container to a position directly over a spindle of
being placed on the spindle, the full bobbin 224
said spinning machine, a second arm and bobbin
was being held by bobbin holder 226, and cam 40
holder to doff the spindles of said spinning ma
was causing shaft I92 to be moved in an up
chine, a third arm and bobbin holder to remove
ward direction and groove 239 and pin 236 was
the full bobbins of yarn from the grasp of said
causing bobbin holder 226 and bobbin 224 to be
second bobbin holder, vertical shafts on which
rotated approximately 90 degrees. As soon as
the second and third arms and bobbin holders
the empty bobbin is placed on the spindle and
operate, cams to operate said second and third
the thread broken as previously described, cam 40 arms and bobbin holders on said vertical shafts
49 will cause shaft I92 to be raised further until
and a cylindrical cam for conveying said do?ing
the enlarged cam portion of shaft I92 has passed
machine along said tracks.
through the rear jaws of bobbin holder 226.
4. In combination with a spinning machine
This movement will allow bobbin holder 226 to
having conveyor tracks alongside the frame, a
release bobbin 2214 which may be dropped into a 1.
do?ing machine comprising, an empty bobbin
bobbin box. By this time cam 44 will cause shaft
container, an agitator for assisting the passage of
596 to move upward and allow bobbin holder 218
empty bobbins through the said container, an
to release the empty bobbin, then cams 42 and
arm and bobbin holder for transferring empty
M will simultaneously raise shafts I94 and I 96
bobbins from said empty bobbin container to a
respectively, until they are in the proper position
position directly over a spindle of said spinning
to do-ff the next bobbin. Also, cam 46 will allow
machine, a second arm and bobbin holder to do?
shaft E92 to be lowered and cause bobbin holder
the spindles of said spinning machine, and a
225 to rotate back to its normal position to assist
cylindrical cam for conveying said do?ing ma
in the operation of doiling the next bobbin.
By
chine along said tracks.
the time that the bobbin holders 2I8 and 226 are r.
5. In combination with a spinning machine, a
in the above described positions, cylindrical cam
95! will have rotated until the curved portion of
groove ill has reached pin 93. Further rotation
of shaft 86 and cylindrical cam 90 will cause the
dof?ng machine to be moved to the next spindle _
where the entire doifing procedure will be re
dof?ng machine comprising, an empty bobbin
container, an agitator for assisting the passage
of empty bobbins through the said container, an
arm and bobbin holder for transferring empty
bobbins from said empty bobbin container to a
position directly over a spindle of said spinning
peated.
machine, a second arm and bobbin holder to doff
the spindles of said spinning machine and a third
arm and bobbin holder to remove the full bobbins
of yarn from the grasp of said second bobbin
In order to expedite the dof?ng of a spinning
frame, one of the above described do?ing ma
chines may be used on each side of the spinning ?
frame which will facilitate the doi’?ng procedure
and allow the spinning frame to be quickly placed
again into production.
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While the embodiment illustrated on the draw
ings has been described with considerable par- ,
ticularity, it is to be expressly understood that
the invention is susceptible of many embodiments
without departing from the spirit of the inven
tion, and reference is therefore to be had to the
appended claims for a de?nition of the invention.
holder.
I
6. In combination with a spinning machine
having conveyor tracks alongside the frame, a
dof?ng machine comprising, an empty bobbin
container, an agitator for assisting the passage
of empty bobbins through the said container, an
arm and bobbin holder for transferring empty
bobbins from said empty bobbin container to a
position directly over a spindle of said spinning
machine, a second arm and bobbin holder to doi‘f
2,408,587
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arm and bobbin holder to remove the full bobbins
of yarn from the grasp of said second bobbin,
holder, and a, cylindrical cam for conveying said
doi‘?ng machine along said tracks.
7. In combination with a spinning machine, a
do?ing machine comprising, an empty bobbin
container, an agitator for assisting the passage
of empty bobbins through the said container, an
arm and bobbin holder for transferring empty
-
means for conveying said machine alongside a
spinning frame comprising, a double track, a
the spindles of said spinning machine, a third
longitudinal member between said double track,
equally spaced lugs mounted on said longitudinal
member and a cylindrical cam acting against
said lugs to convey said dof?ng machine with in
termittent motion along said double track.
10,
10. In combination with a do?ing machine,
means for conveying said machine alongside a
spinning frame comprising, a double track, a
longitudinal member, equally spaced lugs mount
bobbins from said empty bobbin container to a
ed on said longitudinal member, and a cylindri
position directly over a spindle of said spinning,
cal cam acting against said lugs to convey said
machine, a second arm and bobbin holder to doff
dof?ng machine. with intermittent motion along
the spindles of said spinning machine, a third
said double track.
arm and bobbin holder to remove the full bobbins
11. In combination with a dof?ng machine,
of yarn from the grasp of said second bobbin
means for conveying said machine comprising a
holder, vertical shafts on which the second and
double track, a longitudinal member, equally
third arms and bobbin holders operate, and cams
spaced lugs mounted on said longitudinal mem
to operate said second and third arms and bobbin
ber and a cylindrical cam acting against said
holders on said vertical shafts.
lugs to convey said do?ing machine along said
8. In combination ‘with a spinning machine
double track.
having conveyor tracks alongside the frame, a
12. In combination with a spinning frame, a
dof?ng machine comprising, an empty bobbin
do?ing machine comprising,yan empty bobbin
container, an agitator for assisting the passage
of empty bobbins through the said container, an 25 container, an agitator for assisting the passage
of empty bobbins through the said container, an
arm and bobbin holder for transferring empty
arm and bobbin holder, mechanically operated
bobbins from said empty bobbin container to a
to transfer the empty bobbins from the bottom
position directly over a spindle of said spinning
of the empty bobbin container to a position di
machine, a second arm and bobbin holder to doif
the spindles of said spinning machine, a third 30 rectly over a spindle of vsaid spinning frame, a
second arm and bobbin holder, cams to operate
arm and bobbin holder to remove the full bobbins
and cause second arm and bobbin holder to re
of yarn from the grasp of said second bobbin
move the full bobbins of yarn from the spindles
holder, vertical shafts on which the second and
of said spinning frame and replace with empty
third arms and bobbin holders operate, cams to
bobbins, and a cylindrical cam to convey the
operate said second and third arms and bobbin
holders on said vertical shafts and a cylindrical
cam for conveying said do?ing machine along
said tracks.
9. In combination with a do?ing machine,
do?ing machine with intermittent motion along
side the spinning frame.
JOHN W. TUCKER.
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