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Патент USA US3074449

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Jam 22, 1963
c. D. PARHAM ET AL
3,074,439
AUTOMATIC DOUBLE SHUTTLE LOOM
Filed Oct. 18, 1960
9 Sheets-Sheet 2
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Jan. 22, 1963
C. D. PARHAM ETA].
3,074,439
AUTOMATIC DOUBLE SHUTTLE LOOM
Filed Oct. 18, 1960
9 Sheets-Sheet a
Jan- 22, 1963
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AUTOMATIC DOUBLE ‘SHUTTLE LOOM
Filed Oct. 18, 1960
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AUTOMATIC DOUBLE SHUTTLE LOOM
Filed Oct. 18, 1960
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c. D. PARHAM ETAL
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AUTOMATIC DOUBLE SHUTTLE LOOM
Filed Oct. 18, 1960
9 Sheets-Sheet 8
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115 £172,
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Patented Jan. 22., 1953
1
2
tion of the mechanism by which bobbin replacements
3 974,439
AUTOMATIC DOlUBLE SHUTTLE LGGM
Charles D. Parham and James E. Spake, Roxboro, N.C.,
assignors to Collins and Aikman, New York, N.Y., a
?rm
Filed 0st. 18, 1960, Ser. No. 63,421
4 Claims. (Cl. 139-243)
are effected.
FIG. 11 is a fragmentary view in horizontal section
taken as indicated by the angled arrow XI-XI in FIG.
1 and drawn to a larger scale;
FIG. 12 is a fragmentary view in vertical section taken
as indicated by the angled arrows XII—XII in FIG. 11,
with portions broken out; and
FIG. 13 shows a wiring diagram of the electrical facil
loom of the cross picking type wherein, upon exhaustion l0 ities provided for initiating bobbin replacements in the
shuttles of the loom.
of the weft supply in the shuttles, the empty bobbins are
automatically replaced by new ?lled ones. Looms of this
With more detailed reference, ?rst more particularly to
type are ordinarily provided with but a single magazine
FIGS. 1-4 of these illustrations, the loom selected for
This invention relates to an automatic double shuttle
for ?lled bobbins and with means by which, upon ex
convenience of exemplifying our invention has a frame
haustion of the weft in either the upper or lower shuttle, 15 work 15 in the lower part of which is journaled a trans
the empty bobbin is replaced by a ?lled one.
versely extending shaft 16 adapted to be driven from a
In weaving certain pile loop fabrics, a ?ne count weft
suitable source of power, not shown. Through inter
yarn is used as a dummy pick to temporarily support
meshing spur gears 17 and 18, respectively at opposite
the pile loops, said yarn being eventually removed after
sides of the loom, rotary motion is communicated from
the cloth is taken from the loom. In addition, a coarse 20 the shaft 16 to a second transverse shaft 19 supported
or heavier weft yarn is used in the fabric for backing.
in bearings, such as the one indicated at 20, atop the
Since there may be a large disparity in the count of the
framework 15. A?ixed to the shaft 19 at each side of the
weft yarn used in the bottom shed for the body of the
loom is an elliptical gear 22 provided with a crank pin
cloth, and the ?ner temporary loop-supporting weft yarn
23 which is connected, through a link 25, to the cor
in the top shed, it follows that the yardage of the yarns 25 responding supporting sword 26 for the lay 27. The two
for the respective bobbins in the top and bottom shuttle
swords 26 are secured at their bottom ends to a transverse
varies in proportion, and therefore it was impractical to
rock shaft 28 suitably supported in bearings 29 in the
place the bobbins in a common supply magazine in the
lower frontal part of the framework 15. Mounted on the
lay 27 respectively at opposite ends are boxes 30 having
order of required replenishment for production of
fabrics of the kind referred to. Accordingly, to weave 30 vertically spaced compartments 31 and 32 for reception
of upper and lower shuttles 33 and 34. During the
pile fabrics on the looms as heretofore constructed, the
fine or temporary loop-supporting yarn had to be replen
weaving, the shuttles 33 and 314 are thrown crosswise
ished by hand and, notwithstanding automatic replenish
ment of the coarse or body weft yarn, the looms were
actually only semi-automatic in operation.
of the lay 27 from opposite sides of the loom by picker
sticks, whereof one is shown at 35, fulcrumed on studs 36
35 projecting laterally from upward arms 37 fast on the
Our invention has for its chief aim to obviate the neces
rock shaft 28. Each picker stick 35 is actuated, through
sity for hand replenishment of the ?ne weft in looms
a bell crank lever 39, from a horizontally arranged treadle
arm 110 fulcrumed at 41 on the framework 15, each such
used in the production of loop or pile fabrics, after the
treadle arm being iased upwardly by a spring 42 for
manner above described. This objective is realized in
practice, as hereinafter more fully set forth, through 40 maintenance of a shoe 43 thereon in operative relation
provision of an auxiliary magazine for the ?ne yarn
to picker rollers 44 on a double-armed member 45 af
?xed to the main shaft 16. Stationarily supported upon a
bobbins in addition to that for the coarser yarn bobbins,
crosswise frame member on knife bar 49 at the replen
and automatic means by which ?lled bobbins are released
ishing side of the loom is a gravity feed magazine 50
individually from the respective magazines and substituted
45
which we utilize for ?lled bobbins B Wound with a
for the exhausted bobbins in the respective shuttles with
out interruption in the weaving.
Other objects and attendant advantages will appear
from the following detailed description of the attached
drawings, wherein:
FIG. 1 is fragmentary view in side elevation of a loom
embodying the shuttle replenishment mechanism of our
invention;
FIG. 2 is a fragmentary View showing the loom in front
end elevation or as it is seen when looking in the direc
heavy weft yarn, said magazine comprising two vertical
channels 51 and 52 which serve as guides for the opposite
ends of ?lled bobbins B, and of which the lower end or
outlet portions 53, 54 are sloped downwardly and in
wardly of the front of the loom. Disposed crosswise
between the channels 51 and 52 adjacent the lower ends
thereof is a cradle 55 by means of which the bobbins B
are releasable, one at a time, from the magazine. As best
shown in FIG. 5, the cradle 55 comprises a horizontal
shaft 56 whereof the opposite ends are rotatively sup
tion of the angled arrows 11-11 in FIG. 1;
ported in bearings 57 and 58 respectively bolted to the
FIGS. 3 and 4 are fragmentary views in longitudinal
channels 51 and 52 and a pair of discs 59 and 60 which
section taken respectively as indicated by the angled ar
are a?ixed to said shaft within cut-outs 61 and 62 in
rows III—III and IV—IV in FIG. 2;
the lower ?anges of the sloped bottom portions of said
FIG. 5 is a fragmentary detail view in perspective as
seen when looking in the direction of the angled arrow 60 channels, said discs having rounded notches of radii
corresponding respectively to those of the opposite end
V in FIGS. 1 and 4;
portions of the bobbins. Cradle 55 is normally restrained
FIG. 6 is a fragmentary view showing the mechanism
in the position in which it is shown in FIG. 3 by a ?nger
provided for releasing the bobbins from the respective
magazines;
63 at one end of the shaft 56 maintained in engagement
65 with a ?xed stop 65 on the channel by the pull of a
‘FIG. 7 is a view corresponding to FIG. 6 showing how
spring 66 upon an armed projection 67 at the correspond—
bobbin release is elfected;
ing
end of said shaft. Insofar as described up to this
FIG. 8 is a view showing part of the mechanism of
point, the loom is substantially identical with that dis
FIG. 6 in perspective;
closed in US. Patent 2,111,526 granted to W. F. Bird
FIG. 9 is a fragmentary detail view in section taken 70 et al. on March 15, 1938. Fixedly sustained in spaced
as indicated by angled arrows IX-—IX in FIG. 6;
relation from the magazine 56 by a cross bar 68 is a
FIG. 10 is a fragmentary view in perspective of a por
second gravity feed magazine 70 which is similarly com
3,074,439
3
is maintained in the position in which it is shown in
FIG. 3 by engagement of a lug 116b thereon with the
bracket 118. Free on the sleeve 112 adjacent the ?nger
porting yarn thinner or different from that on the bob
115 is a collar 121 which is rotatably urged in clock
bins B in the ?rst described magazine. As shown, the
wise direction by a torsion spring 122 for maintenance
buttom end portions 73 and 74 of the channels 71 and 72
of a tongue 121a thereon in engagement with a tongue
of the second magazine 70 slope downwardly and toward
115i; on ?nger 115.
the declining bottom end portions 53 and 54 of the
The mechanism which we have devised for actuating
magazine 50 and terminate short of the latter. Like the
the cradles of the two magazines 5t} and 70 derives its
?rst magazine 50, the second magazine 70 is provided
adjacent its outlet end with a similar cradle 75 by which 10 motion from the lay sword shaft 28 and includes an
upright arm 125 (FIGS. 1, 6, 7 and 8) al?xed to said
the bobbins B’ are releaseable one at a time, said cradle
shaft. Pivoted intermediate its ends to the-top end of the
comprising a cross shaft 76 rotatively supported in bear
arm 125 is a lever 126. By means of a horizontal link
ings on the channels, and notched discs 77 and 78 on
127 the lower extremity of the lever 126 is connected
said shaft respectively occupying cut-outs in the bottom
posed of two vertically arranged channels 71 and 72
for guidance of bobbins B’ wound with a pile loop-sup
?anges of the lower sloped portions of said channels. 15 to the pendent arm of a bell crank 128 fulcrumed on a
Upon release of a bobbin from the supply in either of the
magazines as later explained, it comes to rest in the lower
,end of the magazine 54} where it is temporarily arrested
by stop ?ngers 83 and 89, see FIGS. 1 and 4. The ?nger
stud projection 129 of a bracket 130 suitably affixed to
the framework 15. The bell crank 128 is subject to the
pull of the spring 131 and its horizontal arm is con
nected by an upwardly extending link rod 132 to an arm
S3 is pendent from a shaft 85 rotatively supported in 20 133 (FIG. 10) fast upon the shaft 111. The cradle actuat
ing mechanism further includes a lever 135 which is
a bracket 86 on the cross bar 68. By means of a torsion
clamped to the sleeve 112 adjacent the ?nger 115. As
spring 87 in?uential upon the shaft 85, the ?nger 83 is
shown, the lever 135 carries a pin 136 which is engaged
yieldingly urged toward the bottom discharge end of
in the slot 137a of a link 137 pivotally suspended from
the magazine 50, and is restrained normally in the posi
tion in which it is shown in FIG. 4 by a stop 88 on said 25 the end of a short arm 138 a?‘ixed to one end of a
rock shaft 1411 supported in spaced bearings 141 and 142
shaft. The stop ?nger 89, on the other hand, is secured
(FIGS. 3, 5, and 10) on the knife rail 49. Fast on the
to a shaft 90 rotatable in the bottom end of the channel
shaft 149 between the bearings 141 and 142 is a notched
72 of the magazine 7 0 and is urged toward the bottom end
arm 145 whereto is connected one end of a cord or '
of the magazine 50 by a tension spring 91 acting upon a
cable 146 which is retroverted about an idle roller 147
second ?nger 92 upon said shaft. Normally, the stop
and whereof the opposite end is connected to a hook
?nger, 89 is restrained in the illustrated position of FIG.
arm 148 on the shaft 56 of the cradle 55. Theshaft 140
- 3 through engagement with a stud 93 on the channel
is normally held in position rotatively as in FIG. 5 by
72 of the magazine 70.
a stop arm 149 thereon subject to a toggle spring 150.
For transferring the released bobbin from the bottom
of the magazine 50 to one or the other of the shuttles 35 A ?nger 151 (FIGS. 6, 7 and 8) clamped tothe link
rod 132 overreaches the lateral lug projection 152a of the
there is shown a means generally similar to that dis
collar 152 at the lower’ end of a rod 153 which is sus
closed in the Bird et al. patent hereinbefore referred to
pended from the horizontal arm of the small bell crank
and includes a lever 95, said lever being free on and
155 fulcrumed on a small bracket 156 (FIG. 4) atop
reaching upwardly from a shaft 96 journaled in ?xed bear
ings 97 on the rail 49, and to which, at the distal end, 40 the knife rail 49 and subject to the pull of a tension
spring 157. The vertical arm of the small bell crank
is yieldingly pivoted argrooved hammer projection 98.
155 is connected, in turn, by a link rod 158 to a small
Fast on the shaft 96 is a tri-arm 99 whereof the two
arm 159 at one end of the shaft 76 of the cradle 75.
extremities 99a and 99b extend above the shaft. A com
It is to be noted from FIG. 8 that the rod 153 is con
pression spring whereof one end is buttressed against
the extremity 99a, is disposed to cooperate With the lug 45 strained to lateral swinging movement in a forked guide
160 suitably a?ixed tothe framework 15. Journaled in
1% on the lever 95 to provide a_yielding connection be
spaced bearings 161, 162 also a?ixed to the framework
tween said lever and said tri-arm. Pivoted medially
15, is a horizontal shaft 163 having adjacent one end
to the pendent extremity of the tri-arm 95 is a counter
thereof an upstanding ?nger 165 which is adapted to
weighted dagger 191 which is subject to a ?nger spring S
so as to be normally maintained in the position in,which 50 engage the rod 153 from behind and thereby bring
the lug 152a of the collar 152 beneath the ?nger 151
it is shown in FIG. ,3. Depending upon which of the
on the link rod 132, as later on explained.
two shuttles is to be replenished, the dagger 101 is adapted
By means which we have provided to select ?lled
to be engaged by one or the other of the two hunters
bobbins from one of the other magazines 5%, 79 for
102 and 103 adjustably ?xed in the front end of a slide
bar 104, constrained to reciprocation horizontally at one 55 transfer of the selected bobbins to the proper shuttles
33, 34 is as follows: Mounted at different elevations on
side of the loom, said bar being connected by a link 1615
the bracket 130 are solenoids 170 and 171, see FIGS. 1,
to a crank stud 166 on an elliptical gear 107, in mesh
6, 7, 8, 9 and 13. The armature of the solenoid 170
with the elliptical gear 22 hereinbefore referred to.
is connected to one extremity of a tri-arm 172, the
Supported at one end in the framework 15 at one side
of the loom and at the other’ end in a ?xed bearing 110 60 extremity 172a of which is connected to a normally
pendent from the knife rail 49, is a tranverse rock shaft
111, see FIGS. 2, 3, 5 and 10. A?‘ixed to one end of a
sleeve 112 free on the shaft 111 is an arm 113 which car
ries a roller 113b adapted to cooperate with a pendent
retracted bolt 173 guided for endwise sliding movement
in bracket 13%} into the path of the lever 126. The
extremity 17% of the tri-arm 172 is weighted and con~
nected by a link 174 to an arm 175 on the shaft 163'.
cam projection 161a on the dagger 101, the hub. of said 65 The armature of the solenoid 171 is similarly connected
to a counterweigh‘ed tri-arm 176 whereof the extremity
arm having a lateral projection, 113a in engagement with
176a is connected to another normally retracted bolt 177
a similar projection 114a of a collar 114 fast on said shaft.
likewise guided for endwise sliding movement ,in the
To the opposite end of the sleeve 112 is secured an up
standing ?nger 115 whereof the end is notched as at
‘bracket 139, at a level below the bolt 173 and likewise
115a so as to be engageable by a_counterweighted latch 70 adapted to be thrust into the path of the 'lever126. As
116 fulcrumed at 117 upon a small bracket 118 secured
shown in FIG. 13, the coils of the armatures of the
solenoids 170, 171 are in circuit respectively with spring
to the bottom of the knife rail 49. The roller 113 at
biased electrodes 1%, 181 and 182, 133 slidable in
the bottom end of a pendent projection 116a of the latch
guides 184, 185 and 186, 137 in a bracket 188 (FIGS. 11
116 is arranged to the actuated, as later explained,'by a
bunterstud 120 on the lay 27. Normally, the latch 116 75 and 12) on the knife rail 49 respectively at the levels
2,074,439
5
6
of the upper and lower shuttle compartments 31, 32 of
one of the shuttle boxes 30, and adapted to make con
tact with metallic ferrules 189 and 1% on the bobbins
lower slide bolt 177 to be thrust forward to the broken
line position of FIG. 9 into the path of the lever 126.
The lever 126 is thereby intercepted as in FIG. 7 with
B’ and B in the shuttles 33, 34 when the weft supply
impartation this time, through the parts 127 and 128, of
on said bobbins runs out.
from any suitable source such as a battery indicated at
a greater downward movement to the link 132 and im
partation, in turn, of a greater rotative shift to the shaft
111 and the arm 133. A de?nite partial clockwise turn
191 in FIG. 13.
is thus communicated, through the slotted link 137 and
The electric current used to
energize the solenoids 170 and 171 may be supplied
Operation
arm 138, to the shaft 140 so that the notched arm 145
Normally, the lever 126 is swung bodily back and 10 exerts a pull on the cord or cable 146 (FIGS. 4 and 5)
to actuate the cradle 55 for release of a bobbin B from
forth with the lay 27 without affecting the instrumen
the magazine 5%}, said bobbin rolling down the inclines
talities interposed between it and the cradles 55 and 75
at the bottom of said magazine until arrested by the
of the magazines 5% and 7G. Assume that the weft
?ngers 83 and 89. Transfer of the released bobbin to
supply in the upper shuttle 33 has become substantially
the lower shuttle 32 is effected in the same way as here
exhausted and that, upon the next beat of the lay 27,
inbefore described in connection with the transfer of
the electrodes 18% and 131 contact the metallic ferrule
189 on said bobbin, as a result, the solenoid 170 is
energized and the bolt 173 thrust forward to intercept
a fresh bobbin into the upper shuttle, except that in this
instance, a greater rotative shift is imparted to the shaft
111 and hence to the arm 113 whereby the dagger 101
the arm 126 as in PEG. 6, the bell crank 128‘ being
thereby moved counter-clockwise about its fulcrum 129. 20 is positioned so that the end thereof is brought to the
level of the lower hunter 1% on the slide bar 104, which
At the same time, by energization of the solenoid 179,
bunter extends to a greater distance forwardly of said
the tri-arm 172 is moved clockwise as in FIG. 9 and
bar
than the hunter 102. Accordingly, a greater swing
a similar movement is imparted, through the links 174
is imparted to the transfer arm 95 as necessary, for
and 175, to the shaft 163, the ?nger 1?5 thereon thus
urging the rod 153 sidewise so that the lug 152a of the 25 transfer of the bobbin released from the magazine 5%
as above into the lower shuttle 32.
collar 152 thereon is brought beneath the ?nger 151 on
While the preferred embodiment of this invention has
the link rod 132. By arrest of the lever 126, as just
been described in some detail, it will be obvious to one
explained, and the movement of the arm 125, the link
skilled in the art that various modi?cations may be made
rod 132 is pulled downward due to its connection to
without
departing from the invention as hereinafter
30
the bell crank 128, with the result that the rod 153 is
claimed.
depressed as in FIG. 6 upon engagement of the ?nger
Having thus described our invention, we claim:
151 with the lug 152a of the collar 152. Due to the
slot in the link 137, the arm 138 on shaft 146 is not
affected at this time. As the rod 153 is depressed, the
bell crank 155 is moved clockwise to the position in
FIG. 6 and, through the horizontal link 15% and arm
159, the cradle 75 is turned through a partial rotation
to release the bobbin B’ from the magazine 70. The
bobbin B’ so released rolls down the inclined lower por
tions of the magazine 70 and onto the bottom inclines
of the magazine 50 where it is arrested by the stop
?ngers 83 and 89 as in FIG. 3. During the downward
1. In a double shuttle loom operative on the cross
picking principle, ?rst and second supply magazines for
?lled bobbins to be substituted individually in the lower
and upper shuttles upon depletion of the individual
bobbins in said shuttles, automatic release mechanism
for releasing the bobbins one at a time from the respec—
tive magazines including individually associated rockable
cradles; an upright oscillating arm fast on the shaft to
which the swords of the lay are a?‘ixed; an upstanding
lever intermediately pivoted to the end of the oscillating
arm; an arm connected to the cradle of the ?rst magazine;
movement of the link rod 132, the arm 133 is moved
a link pendent from the arm on the cradle of the ?rst
counterclockwise as viewed in FIGS. 1 and 1t) and the
pin 136 at the end of the arm is moved down in the 45 magazine and having a ?nger thereon intermediate its
ends; an arm connected to the cradle of the second
slot of the link 137 without, however, affecting the
magazine; a rod pendent from the arm on the cradle
shaft 149 at this time. By actuation of the arm 133
however, the shaft 111 is turned
tion counterclockwise in H63.
which, through the collar 114-,
sleeve 112 are correspondingly
through a partial rota~
1 and 10 incident to
the arm 113 and the
moved. By attendant
of the second magazine and having a collar at the bottom
end thereof normally displaced laterally from beneath
the ?nger on the ?rst mentioned link; a bell crank
fulcrumed on a ?xed bracket with its horizontal extremity
connected to the bottom end of the link rod and with
its pendent extremity connected to the bottom end of
cooperation of the roller 11% of the arm 113 with the
cam 191a of the dagger 1%1, said dagger is moved about
the arm on the cradle of the ?rst magazine; a transverse
its fulcrum and the end thereof brought to the level of
the bunter 192 on the slide bar 104. By the same rotary 55 shaft with a ?nger thereon engageable with the said rod;
normally retracted slide bolts respectively at different
shift of sleeve 112 the ?nger 115 is turned and the notch
levels in the bracket; spring urged contacts for engaging
115a in the end thereof is caught by the hook of the
a ferrule on the lower shuttle upon depletion of the weft
latch 116 to temporarily hold the shaft so turned against
thereon; a solenoid in circuit with said contacts and
the torsional effect of the spring 122. Accordingly,
during the next beat stroke of the lay 27, the dagger 60 operative upon closing said circuit to project the lower
slide bolt into the path of the lever and thereby inter
101 is engaged by the hunter 162 on the slide bar 164
cept said lever to effect operation of the main magazine
with the result that, through the arm 99, the shaft §6
cradle for release of a bobbin therefrom in readiness
is turned clockwise in FIG. 3, and the arm 95 is actu
for transfer to the lower shuttle; spring urged contacts
ated so that, through the hammer 98, the bobbin B’
released as above explained, is transferred from the 65 for engaging the ferrule on the bobbin in the upper shuttle
upon depletion of the weft thereon, a second solenoid
magazine 5% into the upper shuttle 51, the exhausted
in circuit with the last mentioned contacts and operative
bobbin being, at the same time, displaced from said
upon closing the circuit to project the upper slide bolt
shuttle and discharged down through an opening 27a
into
the path of the lever to intercept said lever and for
(FIGS. 3 and 4) in the lay 27.
actuating
the cross shaft so that, by the ?nger thereon,
70
Upon exhaustion of the yarn supply on the bobbin
the rod is moved laterally to bring the collar on the rod
in the lower shuttle 32 and attendant contact of the
beneath the ?nger on the link for actuation of the cradle
electrodes 182 and 183 with the metallic ferrule 19!} on
of the second magazine and release of a fresh bobbin
said bobbin when in the shuttle box, the circuit through
therefrom in readiness for transfer to the upper shuttle;
the coil of the solenoid 171 is established, causing the 75 and transfer means automatically operable to transfer
3,074,439
8
the bobbins so individually released into the respective
shuttles.
2. A double shuttle loom according to claim 1, fur
ther including
ieldable means common to the two
magazines for temporarily arresting the individually re
leased shuttles, wherein the transfer mechanism includes
a transferer, and automatic means for imparting move
ments of different extents to the transfer to dislodge the
picking principle, having a lay with its swords ai?xed
to a rock shaft, and a pair of shuttle boxes in super
imposition respectively at each side of the loom: weft
exhaust detectors, one associated With each shuttle box
at one side of the loom; a ?rst supply magazine and a‘
second supply magazine, respectively for bobbins wound
with different kinds of yarn, supported above the shuttle
boxes at the replenishing side of the loom, said magazines
having a common outlet; an oscillating arm on the afore
individually released bobbins from the temporary arrest
ing means and deposit them into the corresponding 10 said rock shaft; bobbin release means individually asso
ciated with the respective magazines; means at the
shuttles with incidental displacement of the depleted
common outlet of the two magazines for temporarily
bobbins from said shuttles.
restraining bobbins released individually from the re
3. In a double shuttle loom operative on the cross
spective magazines at different times; normally idle link
picking principle having a lay with its swords affixed
to a rock shaft, ?rst and second supply magazines respec 15 ages for actuating the respective release means; means
controlled by the respective detectors upon depletion of
tively for ?lled bobbins to be substituted individually for
the weft in the respective shuttles for setting the linkages
the individual bobbins in the respective shuttles upon
aforesaid for actuation from the oscillating arm to actu
depletion of the bobbins in said shuttles; separate
ate the respective release means at different times; and
detectors for detecting depletion of the bobbins in the
transfer means for transferring the bobbins individually
respective shuttles; separate means for releasing indi
released from the magazine as aforesaid into the respec
vidual bobbins at different times from the respective
tive shuttles with attendant displacement of the depleted
magazines includin0 an oscillating arm on the rock shaft;
individual bobbins from the shuttles.
separate detectors for detecting exhaust of the weft on
the bobbins in the respective shuttles; normally idle link
ages adapted to be set by means controlled by the re
spective detectors for motivation by the arm aforesaid
to actuate the separate release means at different times;
and transfer means for transferring the bobbins indi
vidually released as aforesaid into the respective shuttles
at different times with attendant displacement of the 3O
References ?iteti in the ?ie of this patent
UNITED STATES PATENTS
2,136,331
Bird et al. __________ __ Nov. 8, ‘1938
2,245,445
2,418,101
Schwabe ___________ __ June 10, 1941
Stner ______________ __ Mar. 25, 1947
individually depleted bobbins from the respective
shuttles.
4. In a double shuttle loom operative on the cross
FOREIGN PATENTS
517,052
Belgium ____________ __ Feb. 14,
1953
UNITED STATES PATENT OFFICE
‘CERTIFICATE, OF CORRECTION
Patent No‘, 3YO74A39
January 22, 1963
Charles De Parham et a1.
It is hereby certified that error appears in the above numbered pat
ent requiring correction and that the said Letters Patent should read as
corrected below.
'
‘
Column 3,‘ lin"e""."3Y ‘for v"’bu'tto'm"" re'a'd""-—- ‘bottom “a; line
6, after"“downwardly” insert; ‘-— above" L==g column: '7',“ line 8,
for‘ “transfer”‘read’ '"—= v'tra‘ns'fer'er""——‘,
'
Signed an'd"""s'eal'e'd"'t‘his‘ v16th"day-“0f “July” 1963,
SEAL)
Lttest:
ERNEST W. SWIDER
Xttesting Officer
.
DAVID L- LADD
Commissioner of Patents
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