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Патент USA US2106727

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Feb. 1, 1938.
I
A. w. DRQBILE
f 2,106,727
LOOM
Filed Aug. 23, 1933
9 Sheets-Sheet 1
a
mm
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Feb. 1, 1938;
A, w, DROBlLE
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' 2,106,727
LOOM
Filed Aug. 23, 1953
9 Sheets-Sheet 2
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75 7644
Feb. 1, 1938.
A_ w, DROBILE
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2,106,727
LOOM
,Filed Aug. 25, 1933
9 Sheets-Sheet 3
Feb. 1‘, 1938.
A. w. DROBILE
LOOM
Filed Aug. 23, 1933
2,106,727
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9 Sheets-Sheet 4
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2,106,727
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Filed Aug. 23, 1933
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9 Sheets-Sheet 5
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A. w. DROBl/LE
2,106,727
LOOM
Filed Aug. 25, 1953
9 Sheets-Sheet 7
Feb. 1, 1938.
A_ w_ DROB|LE
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2,106,727
LOOM
Filed Aug. 23, 1933.
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Feb. 1, 1938.
A. w. DROBILE
2,106,727
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Filed Aug. 23, 1955
105’
110
9 Sheets-Sheet 9
Patented Feh. I, 1938 '_
2,106,727‘
UNITED STATES PATENT OFFICE
LOOM
Albert W. Drobile, Wayne, Pa, assignor. to
Collins & Aikman Corporation, Philadelphia,
Pa., a corporation of Delaware
' Application August 23,- 1933, Serial No. 686,458
20 Claims.
(Cl. 139-20)
length by a weft carrier, which preferably lays a
or packages of yarn for supplying the weft do not length of weft in each of sequential sheds, such‘
enter the sheds formed by the warps, but are picks being connected by a bight at the selvage
supported by a stationary holder and sections of and forming connected picks of hairpin-like shape
My invention is a loom in which the'package
5 weft ‘threads drawn therefrom are bent into loops _ with warps crossed between them and held against 5
and inserted in the sheds by weft carriers which
are positively controlled throughout their move
ments andwhich both form the weft loops and
insert them in the Warp sheds. ;
1-0
In accordance with my invention, a section of
weft yarn is stretched across the path of a posi
tively controlled weft carrier by devices at least
one of which is movable across the path of the
weft carrier, and with at least one of which de
15 vices the weft thread makes a running connection
while such yarn is still connected with the cop.
The movement of the weft carrier draws addi
_ tional yarn from the cop through the member
with which it ,has a running connection and si
20 multaneously loops such yarn and inserts it into a
shed formed by the manipulation of warps by
usual shedding‘ mechanism.
My invention is particularly applicable to looms
raveling by the bight of the hairpin. The mech
anism may, however, be so operated as to lay one
leg of .a hairpin in the upper shed andthe other
leg of the hairpin in the lower shed of two super
posed warp sheds. In such case, the bights of 10
adjacent hairpins may be at the same or opposite
selvages, and the free ends of the wefts may be '
secured by weaving a doup or leno selvage.
In the preferred embodiment of my invention,
the mechanism on each side of the loom for 15
stretching the weft yarns in the paths of the weft
carriers operating on such side of the loom com
prises a pair of stationary grippers, which are po
sitioned in planes on opposite sides of the paths
of the weft carriers in their movements into the 20
sheds. Yarns are led from a compact supply ‘of
weft yarn to such grippers through eyes in the
ends of lever arms which may be reotilineally
for the production of fabrics having picks lying in . movable relative to one another and are oscil
25~ different vertical planes, such as plush made on latable about an axis so as to carry sections of 25
the double plush principle or friezes having ground the threads running through the eyes to the
picks and loop picks spaced from one another.
opposite sides of the paths of the weft inserters
A single weft carrier may be employed and may from the gripper by which such threads are then
insert wefts positioned by‘one or, a pluralityof' held. The threads are held by one gripper dur
:LJ yarn drawing out or stretching devices. Pref
ing the insertion of one pick and by the other 30
I erably, however, I provide a plurality of positively‘
controlled weft inserters or carriers. in different
planes on each side of the loom, and likewise
provide‘ a plurality of devices on each side of the
:33 loom for drawing out yarn in the paths of the weft
carriers
or
inserters.
'
'
.
_
The weft carriers may each carry the‘ weft
thread engaged and inserted thereby all the way
across the shed, but preferably the weft carriers
4') are arranged in complementary pairs and pro
‘
gripper during the insertion of the next pick,‘
after which the thread is preferably cut in ad/J
Vance of the gripper then holding the yarn. Each
gripper and cutter mechanism. may be provided
with a light weight tension device and guide pins 35
to restrain any movement of a free end of a
thread until it is moved positively by a weft car
rich
The rectilineal movements of eye-containing /
vided with complementary transfer‘ heads by
arms relative to one another spaces the respective 40
threads carried thereby so that they may be laid
which the bight of a loop ‘inserted into the shed
inthe paths of vertically spaced weft carriers.
by one head may be transferred, midway of the The eye-containing arms on one side of the loom
shed, to the"~other head of the pair, and on the may be moved rectillineally relative to one an
45 withdrawal of the latter head the transferred weft other and oscillatetd about their axes together or 45
loop is drawn outtherethrough so as to forin a \ oppositely to one another and may be actuated in
\ straight pick extending from one selvage to the ‘any desired sequence relatively to one another
other.
-
.
~
‘
Each weft‘ carrier head is preferably provided
51) with means for both inserting’a loop and for
withdrawing and straightening'out one leg'of a
loop inserted by a complementary head.
I also provide clipping mechanism by which the
weft'threads may be cut at desired intervalsbut
55 preferably after every other insertion of a yard
and to the similar eye-containing. arms on the
opposite side of the loom by suitable cam and
gear mechanism to provide any desired sequence 50
of weft insertions. Wefts may be inserted simul-‘
taneously into both sheds from both sides of the
loom or into both sheds from either side of the
loom or into one shed from one side of the loom
and into the other shed from the other side of the 55
2
2,106,727
4; Fig. 8 is a. fragmentary sectional view of a
gripper operating mechanism taken on the line
8—8 of Fig. 4; Fig. 9 is a fragmentary sectional
a fabric or may be inserted into a shed of the
ground. and the shed of the frieze loops of a- looped view 'of a clipper operating mechanism taken on
fabric or into sheds of different grounds of a the line 9-9 of Fig. 4; Fig. 10 is a fragmentary Cl
View of a second gripper operating mechanism
double fabric.
All or any desired number of the eye-contain‘ taken on the line l0—l0 of‘ Fig. 4; Fig. 11 is an
ing oscillating arms may be threaded, and the irregular fragmentary view of mechanism for
drawing Weft yarns across the path of weft in
remaining eyes left unthreaded when necessary
to produce a desired sequence, and the eyes may serting devices and taken on the line ‘I l-—'H of 10
be threaded ‘with different colored threads or Fig. 4; Fig. 12 is an enlarged perspective View
threads of different ?bres and manipulated of the ends of the weft carriers when approach-I
manually or by suitable mechanlsmto secure a ing transfer position; Fig. 13 is an enlarged per
desired sequence of wefts in the warp shed or spective View of the ends of the weft carriers
sheds. For instance,_ one rectilineally movable .taken at right angles to the view shown in Fig. 12
eye-containing arm on each side of the loom may and with the ends of the weft carriers moved
be threaded and the arm on one side of the loom closer to transfer position; Fig. 14 is a. detailed
positioned by a cam to stretch a thread in the side elevation showing the transfer members in
path of the weft inserter for the upper shed for such position that one of the transfer members
two successive picks while the rectilineally mov
is being opened by the other; Fig. .15 is a per
able threaded arm on the opposite side of the spective view of a modi?ed form of end for a
loom is positioned by a suitable cam to stretch a weft carrier; Fig. 16 is as detailed fragmentary
thread in the path of the weft lnserters for the view of the upper portion of the needle tracks
lower shed during the same successive picking and of the needle actuator arm; Fig. 17 is a trans
verse sectional view on the line I1-'-ll of Fig. 16;
motions of the loom. Thereafter the eye-con
taining arms on the opposite. sides of the loom Fig. 18 is a view of the mechanism shown in Fig.
may be rectilineally shifted so that the arm first
16 with the needles advanced to transfer posi
named provides picks for two successive sheds for v tion and one needle advanced relative to the
the lower ground while the arm second named other to compensate for the curvature of the race
provides picks for two ‘successive sheds of the ways. Fig. 19 is a fragmentary front elevation
upper ground.
»
~
of a modi?ed form of needle track and needles;
The weft inserters preferably each comprise and Fig. 20 is an ‘end view of the‘mechanism
a head having arms forming a yoke across the shown in Fig. 19 looking in the direction of the
mouth of which the bight of a loop is stretched arrows.
.
loom, and the two legs of one hairpin may be in
serted into different sheds of the same ground of
I
10
15
20
25
.
30
35 during insertion, and having a stem comprising
As illustrated in the drawings, my invention
jaws,forming an eye to receive the bight of a loop
carried by the yoke of a complementary head.
Each of the complementary pairs of heads is pro
is embodied in a loom (Fig. 1) having a frame
I in which is journalled a main shaft 2 driven
through a gear 3 and pinion 4 from any suitable
source of power, such as the shaft 5 having usual
vided with spreading means for opening the jaws
These heads are ‘fast and loose pulleys thereon. (Figs. 1, 2, and 3.) 40
operable as small shuttles‘ under positive control The shaft 2 has ?xed thereon a gear 6 through
throughout their movements by their attachment which usual heddle mechanism ‘I may be driven
40 of the stem of the other head.
to needles or bands which are drawn into and
extruded from curved guideways or tracks. The
needles on each side of- the loom may be oper
ated sequentially-by independently operable oscil
latory arms, or they may be operated simultane
through the gear 8, shaft 9 and cams ill in any
usual manner. A gear [3, ?xed to the shaft i4,
meshes with the gear teeth i5 of the gear 3 (Fig.
1). The shaft I4 is provided with the crank arms
l6 having pivoted-thereto the links i'l pivoted to
ously by a single oscillatory arm, in either case the lay is having thereon the reed I8’ (Figs. 1, 2,
the differences in the lengths of their curved and 3) fulcrumed on the rock shaft i9 and os
_
50 paths resulting from the di?'erence in the radii cillatable in the usual manner.
thereof may be compensated for by any suit
The shaft H has ?xed thereto beveled gears 20
able compensating mechanism so that both heads (Figs. 1, 2, and 3) which mesh with beveled gears
2| on shafts 22 which have ?xed thereto beveled
are projected the same distanceinto the sheds.
Looms embodying my invention may be pro
gears 23 meshing with beveled gears 24 ?xed on
vided with any usual accessory motions, such as a shaft 25 (Figs. 1, 2, 3, 4, 5, and 6). The shaft
shedding, let-off, take-off, splittingand pile deliv 25 has ?xed thereto cams 26, 21, 28, and 29 (Figs.
ery motions.
"
‘
4, 8, 9, 10, and 11). The cams are respectively
The characteristic features and advantages of designed to actuate lever arms 30, 3|, 32, and 33
my improvements will further appearfrom the (Figs. 4, 5, 6, 8, 9, 10, and 11). The lever arm 30
60 following description and the accompanying is journalled on‘the bearing 34 and the lever arms
drawings of aloom in which is incorporated a ' 3|, 32 and 33 are journalled on the shaft 35 ?xed
preferred embodiment of my improvements.
in the bracket 36 on the frame (Figs. 5, 6, and 11).
vIn the drawings, Fig. 1 is a front elevation of The lever arm 30 is provided with a bearing 30'
a loom embodying ‘my improvements; Fig. 2 engaged by the periphery of the cam 26 and is
65 is a top plan view thereof; Fig. 3 is an elevation
pivctally connected through the link 31 with a
of the end of the loom taken from the right hand‘ lever 38 which is jo'urnalled on a bearing stud 39
end of Fig. 1; Fig. 3a is a fragmentary transverse on the frame (Figs. 4, 5, 6, and 11). A second
section taken through the loom illustrating a lever 40 contains a slot 4i through which the
modified form of beat-uprFig. 4 is an enlarged bearing stud 39 projects. A spring 42, ?xed to the
70 fragmentary front elevation of the loop-forming‘ bearing 43 and‘to the lever 40, biases the lever
device at the left hand end of Fig. 1;, Fig. 5 is a 40 in an upward direction. The lever 40 contains
transverse sectional view taken on'the line 5-5 a slot or slideway 40’ vfor the passage of the pintle
of Fig. 4; Fig. 6‘ is a top plan view of the mech
31' ?xed to the link 31 and. journalled in the lever
anism shown in Fig.‘ 4; Fig. 7 is a fragmentary ' 38. The upper end of the lever 40 contains a slot
75 horizontal sectional view on the line ‘l-‘l of Fig. 40" in which slides a. headed stud 38' threaded
2,106,727
3
in the lever 38 so that the lever 48 is movable ‘blade 66 has ?xed thereto a lever 68 through
longitudinally relatively to the lever 38 but turns which it is biased toward cutting position by a
therewith on the bearing 39.
plunger '68 pressed outwardly by a spring 18
Reciprocation of the slide or lever 88 is'eifected whose tension is adjustable by the threaded plug
by means of any one of a plurality of cams de
‘H (Fig. 9). The opposite end of the lever 68
tachably and adjustably mounted on the frame is engaged by the tail of the curved lever 32 by
bracket 45. Cams of variable and desirable con
which the cutter blade 66 is opened in synchro
tours are attachable to the bracket to effect re
nism with the opening of the gripper jaw 58.
ciprocation of the lever 48 in desired cycles and
When the weft shifting arms 38 and 48 are
10 sequential movements. For the sake of illus
moved by the cam 26 and intermediate mecha
tration, one form of cam 44 having an appropri
nism described to the full line position shown
ately shape cam face 44' for effecting one cycle in Fig. 11, the gripper jaw 58 and the cutter
of movement is shown and is engaged by a roller blades 66 are moved by their respecfive cams 27
on the end of the arm 48. If desired, a movable
and 28 to the open position shown in Figs. 10
15 cam may be provided and actuated through ap
and 9. In this position of these mechanisms the
propriate mechanism (not herein shown) to ef
ends of the threads 52 and 53 are held by agrip
fect_ the desired sequence and amplitude of re
per comprising a ?xed serrated jaw 12 and a
ciprocations of the (member 48 (Figs. 1, 4, 5, serrated rocking jaw 13 fulcrumed on a stub
and 6).
shaft 14 mounted in the off-set bracket ‘I5. The
20
The lower ends of the lever arms 38 are each jaw ‘l3 has ?xed thereto a bent lever 16 which 20
provided with double eyes 58 and the lower ends is normally biased outward ‘to hold the jaw 13
of the lever arms 48 are each provided with an
eye 5!. By removing the bolts 3'8’ and 38’, the
levers 38 and 48 may be readily detached from
one another and the link 31 on one side of ‘the
loom may be connected with the lever 38 alone
and the link 31 on the opposite side of the loom
may be connected with the lever 48 alone when
it is desired to feed but one thread from each side
30 of the loom.
When, however, a pair of wefts
are to be fed from each side of the loom weft
threads 52 and 53 are laid from the cops 54,
mounted on stationary supports I’ (Figure 1)
through tension devices 55 and guides 56 and are
threaded through the eyes 58' and 5E and have
their tips gripped byone or the other of a pair
of gripper mechanisms on opposite sides of the
paths of the weft carriers.
The levers 38 and 48 are normally biased by
40 a spring 4211 toward the'positions shown in full
lines in'Fig. 5 and in Figs. 4, 6, and '7, and when
the levers 38 and 48 are in such positions the
tips or ends of the threads 52 and 53 are held
in a gripper comprising the ?xed serrated jaw
57 and the rocking serrated jaw 58 journalled on
a shaft 59 in the bracket 68. A guide pin 68' and‘
weight tension device 60" are preferably pro
vided adjacent to the jaw 58 to better control
in closed position by a plunger ll pressed by a
spring 18 Whose tension is adjustable by means
of the threaded plug 19 (Figs. 5 and 8). The op
posite end of the lever 16 contains an elongated 25
slot 88 for the reception of a pin 8! ?xed in the
link 82 which is pivotally connected with the ful
crumed lever 33. When the cam 29 rocks the
lever 33, the link 82 rocks the lever ‘I6 to open
the jaw 13 against the pressure of the spring '58. 30
The cutter 66 and gripper .13 have adjacent
thereto guide pins and tension devices similar~
to the pins 68' and tension devices '68".
In the preferred cycle of operations of the
weft positioning mechanism described, begin
ning with the positions shown in dotted lines in
Fig. 5, it may be considered that lengths of the
yarn 52 and 53 have just been inserted as loops
and straightened out in the sheds as straight
lengths each forming one leg of a hair-pin-like 40
pair of wefts in the sheds of the fabrics being
woven and that the yarns 52 and 53 are held by
the gripper jaw 13 to prevent withdrawal of the
picks just laid when the next succeeding loops
are being drawn out. When the rotation of the
cam 26 drew the levers 38 and 48 from the po
sition shown in full lines to the position shown
in dotted lines in Figure 5, the lever 48 and the
the thread; the Weight tension device being
opened by the jaw 58 through a pin 68a on the
yarn 53 carried thereby were forced downwardly
weight tension device 68", which when it has
served its purpose is lifted by the further move
thread 52 lying between the jaw 13 and the eye
ment of the jaw 58 engaging the pin 68a.
The jaw 58 has ?xed thereto a lever 68 (Fig. 10)
through which the jaw is biased toward theclosed
or gripping position by a plunger ‘62 pressed out
wardly by a spring 63 whose tension is adjustable
by means of a threaded plug 64. The opposite
end of the lever 6| is engaged by the tail of the
curved lever 3| and rocked thereby at desired
able in vertically spaced planes to carry» the weft
yarns 52 and 53-into the sheds of the fabrics or
fabric. The movements of the weft inserting de
intervals to open the jaw 58 (Fig. 10), against
in the plane of the eye 58, and both threads 52 ,
and 53 are under the open jaw 58 and cutter 66
by the cam face 44' so that the thread 53 was 50
tension device. As the thread is under some ten - looped under the guides .83 and 84 as the eye 5|
sion when held by the gripper, there may be of the lever 48 moved horizontally past the guides ,
some tendency toward a “snap” action when the in moving fromthe full lineposition to the dotted
_ gripper is released, which tendency of the thread line position (Fig. 5) and hence the yarn 53 lies
CH Li is momentarily restrained by the action of the; in a plane vertically spaced from the stretch of
the action of the spring 63 when the thread
carrying arms 38and 48' have been shifted by
the mechanism described to the full line position ‘
shown in Fig. 11.
A cutter is mounted in the bracket 68 adjacent
to the gripper jaws 51 and .58 and comprises a
?xed plate 65 and a rocking blade 66 journalled
on the shaft 59 and-pressed along the same by
75 a coiled spring 61 (Figs. 4 and '7). The cutter
50.
Weft inserting devices 85 and 86 are mov
vices into the sheds draws thread from the cops
54 through the eyes 58 and 5| into loops within
the sheds. During the inward movement of the
weft, inserting devices, the lever 48 is elevated
by. its spring 42 until its eye 5| is substantially 65
(Fig. 11). When loops of su?icient length have
been drawn, the cam 29 opensthe jaw 13 simul
taneously with the ‘closing of the jaw 58 and 70
cutter 66 by the respective arms 6| and 68. This
severs the thread beyond the gripper 58 and per- I
mits the severed ends to be inserted into the
sheds of the fabrics. '
'
After the withdrawal of the weft inserting de
4
2, 106,727
vices 85 and 36, the further rotation of the cam‘
26 permits the spring 42a to reverse the de
the opposite sides of the axes of cross-heads
scribed motion of the arms 30 and 40 so as to
from. slides II‘! and H8 seated in the slide-ways
H9 and I20. The slides H1 and H8 are held in
draw out a substantially taut thread between the
gripper 68 and the eye 50 and to loop a section
of the thread 53 around the guides 83 and 84 as a
result of the downward motionof the lever 40
while turning about the fulcrum 39. When the
levers 38 and 40 reach the dotted line position
10 shown in Fig. 11, the weft inserting devices are
again operated to draw loops partially into the
sheds of the fabrics. Thereupon the spring 42
elevates; the shaft 40 from its dotted line posi
tion shown in Fig. 11 to its full line position shown
15 in Fig. 5. In the latter position the yarns 52 and
53 are drawn beneath the jaw ‘I3 by the continued
movement of the weft inserting mechanism.
When a loop of sufficient length has been drawn,
the jaw ‘I3 is'closed and the jaw 53 is opened,_
thereby permitting the free end of the yarn which
had been held by the jaw 58 to be drawn into
the shed. The mechanism is then in position,
II2 receive the pintles II6 and'II6 projecting
their respective slide-ways by the spaced plates
I2I, I22, and I23 (Figure 17) which are fixed to
curved track-forming members and overlie slide
ways “9 and I20, but have slots I24 and I25
between them for the passage of the pintles H5
and
II6.
,
_,
10.
The slides III and H8 have ?xed thereto the
bands or straps I26 and I2‘! which are movable
in slide-ways I28 and I29 formed in the curved
tracks I30. These straps or needles I26 and I2'I
have sufficient ?exibility to conform with the
curvature of the slide-ways I26 and I21 without
fatiguing, but su?icient rigidity to support them
selves and weft carriers in-substantially horizon- . -
tal planes when extruded‘ from the slide-ways
by the oscillations of the arms IIO. Plates I3I, 20
having tapered ends, are ?xed to the bottoms of
the tracks I30 in the paths of the cross-heads
with intermediate sections of weft yarns held
I I2 so that when the arms I I0 are turned to move
timing ofmechanisms, the shapes of the control
carries a head or shuttle provided with means
by the jaws‘ ‘I3, and the levers 38 and 40 in the the cross-heads past the‘ tapered ends of the
full line position shown in Fig. 5 ready to repeat plates I3I the cross-heads are rocked on their
the cycle. As it is generally desirable that the axes (Figure 18) so as to advance the straps I26
wefts be inserted in the form" of hair-pins, it is and retard the straps I21 su?iciently to compen
ordinarily not desirable to provide the jaw 13 sate for the differences in ‘the lengths of the
slide-ways transversed by such straps due to
with a complementary cutter, but a cutter sim
30 ilar to the cutter 66 may be provided in advance their differences in radii.v Consequently, when 30
of the gripper jaw 13 if'this should be deemed the straps are extruded from their slide-ways the
desirable to clip the thread after the drawing out ends thereof and the weft carriers mounted
of each loop instead of after the drawing out of thereon are projected substantially the same dis
a pair of loops. By threading the weft into either tance into or through‘ the sheds of 'the' fabrics
85
.
or both of the arms 36 and 40 on either or both being woven.
Each needle or band I26 and I2‘! preferably
sides of the machine, and by suitably varying the
ling cams and the relation of their movements to r for inserting a loop, for withdrawing an inserted
the shedding mechanisms ‘I, a large variety of
40. types of wefts and of sequences of interlacings
therewith of warps may be effected, the sheds
preferably being changed after each insertion of
the weft carriers into the sheds.
loop, and-for transferring a loop,from the insert
ing means of one head to the loop withdrawing 40
means of a complementary head.
As illustrated in Figures 12fto 14, inclusive, the
needles on the opposite sides of the loom are pro
The weft inserting devices may be of any of . vided with complementary heads each compris- ,
45 the usual types of either free-?ying or controlled . ing a body 200 containing longitudinal grooves 45
weft inserters, and operated ‘in any desired se
quence, but for simplicity and flexibility of oper
ation in conjunction with the weft positioning
mechanism described,» it is preferred to employ
positive controlling means for the weft inserting
20I and having grooved‘ arms 202 projecting for
wardly therefrom and containing notches 203 on
the forward ends thereof. The arms 202 have
devices, and to preferably provide pairs of weft
205 extending part way across the mouth or
between them a slot or recess V204, and one of
the arms 202 carries ‘a thin boss or tapered opener 50
inserting devices on each side of the machine. ' throat of the recess 204 and above the bight of
The weft carriers may be moved by such con- ~ the weft loops which may be stretched across such
trolling vmeans all the way across the sheds of
the fabrics being woven, or the weft carriers on
one side may be moved by their controlling means
only part way through the shedand there deliver
mouth and seated in the grooves 202 and notches 65
203. A stern 206' projects forwardly from the
body 200 in a plane off-set from the plane of the
arms 202 and contains an eye 20'! whose sides are
control means on the opposite side of the loom. ' formed by resilient ?ngers 206 terminating in a
their weft threads to weft carriers operable by
60 Two wefts may be simultaneously inserted from
one side, or one weft may be inserted from one
side and another weft simultaneously inserted
from the opposite side.
'
nose 209 which is split along a curved line 2I0 60
to permit ingress of yarn into the eye 201 when
the ?ngers 208 are spread apart. A tapered boss
2“ projects from one of the ?ngers 206 in posi- .
tion for engagement by a boss 206 of a comple
mentary head of similar structure but in inverse 0.5
position. When two complementary heads are
brought together, the nose 209 of each head en
ters the throat between the arms 202 of the other
rants I06 whose teeth mesh with the teeth of the ~ and the boss 205 of each head displaces the boss
beveled pinions I01 ?xed to‘ shafts I08 :Iournalled 2“ of the other.‘ Consequently, the ?ngers 203 70
of each stem are spread apart to permit the
in bearings I09 on the frame. ~Arms I I0 are ad
entryv into the respectiveeyes 201 of the bights
justably clamped on shafts I09 and have jour
nalled therein spindles III (Figures 16, 17, and of the weft loops positioned in the notches 203
18) to which are splined the slotted cross-heads of the other head. When the heads are retracted
As illustrated in Figures 1, 2, and 3, the shaft
I4 has fixed thereto the discs I00 containing cam
slots I M for the reception of rollers I02 journailed
on levers I04 fulcrumed on the bearings I05 and
having on the opposite ends thereof beveled quad
or walking beams H2. The slots H3 and H4 on '
from, one another, the ?ngers 208 of each stem 75
‘
5
2,100,727
snap together to close the slit 2l0 as soon as the
boss 205 clears the boss 2| I, and the bight of the
loop which has been entrapped in the eye 201'
may consequently be drawn away from the head
or shuttle by which it was inserted.
As illustrated in Figure 15, the head 200a con
taining side grooves 2illa, may have its arms
202a formed of wire hair-pins having their apexes
, indented to form notches 2113a. The stem 208a
10 may be formed of an elongated wire hair-pin
having its apex indented and split to form com
plementary hooks 208a which will be sprung apart
shed from the left hand side of the loom will be
transferred to the head about to be retracted to
the right hand side of the loom, and vice versa,‘
and theloop inserted in the lower shed from the
left hand side of the fabric will likewise be
transferred to the head about to be retracted to
the right hand side of the loom, and vice versa.
As these transfers take place in thecenter of
the loom, the jaws 53 open to free the ends of
the threads previously held thereby and the jaws 10.
13 both close to grip the threads, which would
otherwise be drawn therethrough by the retrac
by contact with a weft thread sufficiently to per
mit the entry of. such weft thread into the eye
tion of the respective heads. The releasing of
the thread ends held by the jaws 58 permits the
201a. The escape of the thread from between .vrespective heads 28!! to be retracted to their 15
the hooks 2080. is prevented by the shape of such respective sides of the loom and to draw with
hooks and the close juxtaposition thereof result
them the respective yarns which have been trans
ing from the resiliency-of the wire arms 286a ferred to their eyes in the center of the loom.
forming the stem.
As the heads retreat, the free ends of the yarns
It will be understood'that in utilizing our in
in their eyes are drawn through such eyes and 20
vention in a wide loom, it is generally advanta
the cut ends are of just su?icient length to reach
geous that the transfer of the weft from one head the selvage opposite to the selvage where they
to another should take place intermediate the were respectively inserted. This results from
selvages of the fabrics being woven so that the the fact that the weft supply is cut by but a
inserting needles or straps I 26 and I2‘! need be ' single cutter 66 and the mechanism is so ad 25
only of sufficient length to project the transfer justed that the intervals between the operation
heads or shuttles half way across the loom. of the cutter,“ is su?‘lcient for the drawing out
Where, however, the loom, or the fabric woven of a length of yarn equal ‘to twice the width of
thereon, is relatively narrow, the needles or the fabric being woven. The operation'of the
straps I26 and I2‘! may be made of su?‘icient
length to carry any transfer head 208 all the
gripper 13 relative to the weft lnserters is so 30
timed that such gripper engages the yarns 52 and
way across the loom or all the way through the
shed or sheds of the fabric being woven thereon
53 when loops of suiiicient length have been
drawn by the weft lnserters to extend, when the
loop is straightened out, from the further selvage
of the fabric to the gripper 13. As the cutter 66
cuts yarn lengths equal to double the width of
the fabric, the second picks formed from a single
and the weft loop in such case may be drawn
out at the selvage of the fabric opposite that at
which they were inserted, or may be of only
sufficient length to reach from one selvage to the
cut length vmust necessarily extend from one sel
While, as above set forth, my improved loom vage to the other when the bight of the hairpin
40 mechanism is operable in a great variety of se
is released by the opening of the gripper 13. It
quences, the following is illustrative of a desirable ‘will therefore be seen that when one leg of the
mode of operation thereof for the production of hairpin-like pair of wefts has been inserted into
a shed asa loop and is being straightened out in
pile fabric on the double plush principle.
In the manufacture of double pile fabric, a the shed as a result of the release of its free
other.
_
-
45 pair of ground warps for, the upper ground fabric,
a pair of ground warps for the lowerground fab
ric, and one or more pile warps are threaded
through the heddles ‘I and operated by the loom
harnesses in any usual manner. A pair of threads
50 52 and 53 are threaded in the eyes of the respec
tive levers 38 and 48 on each side. of the loom
and the arms “0 are adjusted so as to extrude
the needles I26 and I21 from their slide-ways
su?iciently to cause their complementary heads
55 200 to meet in transfer position midway.0f the
loom.
The harnesses are operatediso as to form a
shed from the ground warps-of the upper fabric
and a shed of the ground warps of the lower fab
60 ric and to change the sheds after each weft car
rier insertion.
_
'
If the weft mechanism now be regarded as so
positioned that a yarn 52 is stretched from the
jaw 58 to the eye 58 of the lever 38, and a yarn
65 53 is stretched from the jaw 58 around the guides
83 and 84 to the depressed eye 5| of the lever 48
on each side of the loom, the extrusion of the
needles I26 and l_2'| from the slide-ways on each
side of the loom will cause the head 200 on each
70 needle I26 to carry a loop of a yarn 52 intothe'
shed of the upper fabric and will cause the head
280 on each needle I21 to carry a loop of a. yarn
53 into the shed of the lower fabric.
When the complementary heads meet in the
75 center of the fabric, the loop inserted in the upper
end'by the gripper 53, the drawing of too much 46
yarn into the shed for a single weft is prevented
by the engagement of the yarn by the gripper
13. When the ?rst leg has been completely in
serted, it is important to prevent it being wholy
or partially withdrawn by the application of a
pull thereto in drawing into a subsequent shed a
sequential length of yarn in the form of a loop
which is straightened out in the shed to form
'50
the second leg of the hairpin-like pair of wefts.
Consequently, the gripper ‘l3 retains its hold on 55
the ‘yarn until the second loop has been drawn
into the shed and then releases the yarn so that
such second loop may be straightened out and
the bight drawn up close against the fabric sel
vage.
.
.
v
When the heads 208 have been all retracted
from. the sheds, the two legs of weft which have
been inserted from opposite sides in. each shed
are beaten up by the lay and the harnesses op~
erate the heddles to form a new shed in each
fabric.
Meanwhile, the arms 33 and 40 are movedby'
the actions of the cams 26 across the paths of
the heads 23', and such movements of the levers
38 and 43 draws off yarns from the cops and lays 70
a section of yarn 52 from each jaw 13 to each
eye 50 and lays a section of yarn 53 from each
jaw 13 around each pair of guides 83 and 84
to each eye ‘I.
Such drawn out sections lie
in the paths of the notches 203 in the respective 75
‘2,106,727
6
heads 200. when the heads are again advanced, ' yarn; means for stretching the weft yarn in the‘
path of reciprocation of one of said carriers; one
of said carriers drawing yarn from said com
they draw yarn from the cops 54 through the
eyes 50 and 5| to form loops of weft projecting
into the upper shed and into the lower shed from
each side of the fabric. Shortly before the com
plementa'ry heads come into transfer position,
the jaws ‘I3 are .opened so that the bights be
tween the previously laid weft legs and the new
ly formed loops may be drawn by the heads close
pact supply, forming ‘a weft loop therefrom and
inserting it in a shed and the other of said car
riers drawing through said shed a part of the
yarn loop formed by said first yarn carrier, and
loom mechanism independent of the sheds for
gripping said yarn and preventing withdrawal
of an inserted pick during the stretching of a 10
subsequent” weft length in the path of said'?rst
10 up‘ against the selvage 'of the fabric.
As the heads again approach their transfer
positions, the blades 66 are operated to cut the
threads, and jaws 58 are simultaneously op
erated to grip the ends of the threads connected
15' with the levers" and 40. Upon the retraction
of the heads, the cut ends of the loops are drawn
to the opposite side of the fabric to complete the
other leg of a hairpin weft, which is then beaten
up, and the sheds changed as before described.
By this method of operation the upper fabrics
named carrier.
-
3. In a loom of the character described, the
combination with means for forming warp sheds
and a support for a compact supply of weft yarn 15
outside of the sheds formed by the said means,
of a reciprocable weft carrier movable into warp
sheds formed by said means, a device positively
controlling the movementsof said weft carrier
throughout its travel into and out of such sheds, 20
an oscillatory member for stretching a weft sup
and the lower fabrics each has a continuous se
ply in the path of reciprocation of said weft car
rier, a gripper for holding the end of said weft
each hairpin are in different sheds and the bights , yarn while it is being stretched by said oscillatory
thereof form good selvages, and a row of-pile member, said member making a running connec
quence of hairpin shaped wefts with bights at
the opposite selvages of the fabric. The legs of
25'
tufts or of pile loops may be produced with each " tion with a yarn drawn thereby from said sup
rotation of the loom by suitably operating the ply, a clipper for severing said yarn, and means
30
pile'heddles after each insertion of the weft car
for operating said clipper after each complete
riers.
oscillation of said ‘oscillatory member.
‘
'
4. In a loom of the character described, the
As illustrated in Fig. 3a, the weft carrier tracks
combination with means for forming warp sheds
may be mounted upon the lay I8, which is nor
mally retracted by an anchored spring ‘connect ' and a support for a compact supply of weft yarn
ed with a slotted link pivoted to the lay. The ‘ outside of the sheds formed by‘ the said means,
lay is moved to beat up position by a cam Illa of.a reciprocable weft carrier movable into- warp
35 acting against a roller on the link. In such sheds formed by said means, a device positively
controlling the movements of said weft carrier
case the shaft I08 may be provided with a ta
. pered squared end movable into a similar socket throughout its travel into and out of such sheds,
and means for sequentially stretching a plural
ity of connected lengths of weft yarn from such
supply in the path of reciprocation of said weft
carrier and comprising a reciprocatory member
oscillatable about an axis across the path of said
carrier, a gripper for holding the end of said
weft yarn while it is being stretched’by said
stretching means, a clipper for severing said 45
in a rotor Mia Journalled in a bracket and oscil
lated at appropriate times by a fulcrumed lever
40 Ilia against the action of a spring tending to
bias the mechanism toward the retracted posi
tion of the weft carriers.
’
'
As illustrated in Figures 19 and 20, the needles
may be independently operated by separately
operable arms “0, and the tracks Ilia and l29a
may lie side by side and have the same radius. ' yarn and means for operating said clipper after
the stretching of each two connected lengths
'I'o position the heads I! and 86 in spaced ver
of said yarn.
tical planes, the needles supporting these heads
5. In a‘ loom of the character described, the
may be diverged by a fork ll2a.
Having described my invention, I claim:
1. In a Lloom‘of the character described, the
combination with means for forming warp sheds
and a support for a compact supply of weft yarn
outside of the sheds formed by the said means,
of a reciprocable weft carrier movable into warp
sheds formed by said means; a device positively
controlling the movemehts of said weft carrier
combination with means for forming warp' sheds
and a support for a supply of weft yarn outside
of the sheds formed by said means, of a recipe;
rocable weft carrier movable _ into warp sheds
formed by said means, a device positively con
trolling the movements of said weft carrier
throughout its travel into and out of said sheds,
and means for stretching a weft yarn from such
throughout its travel into and out_'_ of such sheds,
supply in the path of said 'weft carrierand com
means for stretching a weft yarn from such sup
' prising two grippers, said weft carrier passing be
tween said grippers into a shed formed by said
00 ply in the path of reciprocation of said weft car
rier, said weft carrier drawing out yarn from
said compact supply, forming a weft loop there
from and inserting it in a‘shed, and loom mech
anism independent of the sheds for gripping said
65 yarn and preventing the withdrawal of the in
first named means.
_
_
-
,
-6. In a loom of the character described, the
combination with means for forming warp sheds
and ‘a support for a supply of weftyarn outside ’
of the sheds formed by said means, of a weft car
serted pick during the stretching of a subsequent _ rier movable into warp sheds formed by. said
means, and means for stretching it weft ‘from
weft length in the path of said weft carrier.
2. In a loom of the character described, the ' said supply'in the path of said weft carrier and
combination with means for forming warp sheds comprising two grippers alternately engaging
70 and a support for a compact supply of weft ‘yarn drawn from such supply, said weftcarrier
yarn outside of the sheds formed, by the said in moving toward a shed aforesaid forming a loop
means‘, of a pair of complementary. reciprocable 7 and} drawing a ‘portion thereof into‘ one of said‘
weft carriers each movable into'a warp shed.‘ "grippers. '
~
formed by said means-and each having-means
75 for making mnningengagement with apweft
/--'z.-':-'1n?a., mem'flof Tana characteridescribed, the
__
I
_
H
__
__
_
' . combinationiwithmeans for forming :warp sheds
7
2,106,727
and a support for a supply of weft yarn outside
of the sheds formed by said means, of a weft
carrier movable into warp sheds formed by said
means, and means for stretching said yarns from
such supply in the path of said weft carrier and
comprising two grippers between which said weft
carrier passes in moving into a shed formed by
10
combinationv with means for
simultaneously
said ?rst named means, such movements of said
forming a ‘plurality of superposed sheds, of
mechanism for forming loops of weft simulta
weft carrier forming loops and drawing sections
of sequential loops into said grippers alternately.
multaneously drawing out the end of loops in the 10
8. In a loom of the character described, the
combination with means for forming‘ warp sheds
and Ya support for a supply of weft yarn outside
of the sheds formed by said means, of a weft
carrier movable into warp sheds formed by said
means, and means for stretching a weft yarn
from said supply in the path of said weft carrier
comprising two grippers between which said weft ‘
carrier passes in moving toward a shed formed
20 by said ?rst named means, an oscillatory mem
ber movable transversely to the path of said
. weft carrier and carrying yarn across said path.
9. In a loom of the'character described, the
combination with means for forming warp sheds
25 and a support for a supply of weft yarn outside
of the sheds formed by said means, of a weft car
rier movable into warp sheds formed by said
means, and means for stretching said yarn from
said supply in the path of said weft carrier and
30 comprising two grippers between which said weft
35
pair of weft carriers for severing weft yarn, and
means for operating said clipper after the inser
tion of a pair of picks by the weft carriers with
which such clipper cooperates.
13. In a loom of the character described, the
neously in each of said sheds, and means for si
superposed sheds toward the opposite sides of the
loom, a clipper cooperating with each pair of weft
carriers for severing weft yarn, and means for
operating said clipper after the insertion of a pair
of picks by the weft carriers with which such 15
clipper cooperates.
.
14. In a loom of the character described, the
combination. with
means
for
simultaneously -
posed sheds from the same side of the loom, and
means for clipping the yarn after the insertion of
each pair of loops in each shed.
15. In a loom of the character described, the
combination with means for forming warp sheds,
of a pair of complementary weft carriers each
comprising a head having spaced arms provided
with weft receiving recesses, a stem having a
closed eye and passing between the spaced arms 30
of the complementary head and non-gripping
means spreading the members forming said eye
carrier passes when traveling toward a shed
formed by said ?rst means, means for opening
said grippers alternately and an oscillatory mem
on the passage of said stem between the arms of
her for carrying yarn toward said grippers alter- I
a complementary head.
nately.
'
16. In a loom of the character described, the 35
10. In a loom of the character described, ‘the combination with meansfor forming sheds in
combination with means for forming warp sheds different vertical planes, of weft carriers movable
and a support for a supply of weft yarn outside
of the sheds formed by said means, of a weft car
40 rier movable into warp sheds formed by said
means, and means for stretching a weft yarn
and comprising two grippers on opposite sides
of the path of said weft carrier, a cutter adjacent
weft carriers.
45 to one of said grippers, said weft carrier passing
in sequence one of said grippers, said cutter and
the other of said grippers in moving toward a
shed formed by said means ?rst named.
11. In a loom of the character described, the
50 combination with means for simultaneously
forming a plurality of superposed warp sheds, of
a plurality of pairs of complementary weft car
riers,‘ the carriers of each pair having means for
transferring a-running weft loop inserted by one
55 of said carriers to the other of said carriers,
means for presenting a weft yarn to the loop in
serting carrier of each of said pairs, grippers
limiting the movements of yarn connected with
the yarn supply into said sheds in forming cer
60 tain picks, and clipper mechanism severing said
yarn and thereby regulating the length of picks
complementary to said ?rst named picks, said
?rst named means changing the sheds between
the insertions of the complementarv picks. v
65
into said sheds, and means for stretching yarns
in the paths of said weft carriers, and compris
ing a yarn stretcher and means for moving said 40
yarn stretcher from the horizontal plane of move
ment of one of said weft carriers toward the hori
zontal plane of movement of the other of said
from such supply in the path of said weft carrier
12. In a loom, of the character described, the
combination with means for simultaneously
forming a plurality of superposed warp sheds, of
a plurality of pairs of Weft carriers having ?exible
supports and simultaneously projecting weft
70 from both sides of the loom to a point of transfer
in each of said superposed sheds, each of said
Weft carriers having means for effecting the
transfer of a weft inserted from one side of said
loom to a carrier withdrawing to the opposite
75 side of said loom, a clipper cooperating with each.
‘
forming a plurality of superposed warp sheds, of
Weft carriers having ?exible supports simulta 20
neously inserting a loop in each of said super
17. In a loom of the character described, the 45
combination with means for simultaneously form
ing superposed warp sheds, of a pair of weft car
riers of equal length and having ?exible supports
movable in curved paths of different lengths, and means for compensating the traverse of said sup 50
ports for the difference in lengths of the curved
paths of said supports.
_
18. In a loom of the character described, the
combination with shedding means for forming
a series of sheds, a stationary supply of weft out 55
side of the sheds, means comprising a positively
controlled weft inserting and withdrawing unit
on both sides of the shed -to draw off from the
supply, insert and transfer the weft within the
shed to lay a single pick of weft, two grippers and
a cutter outside the shed for each inserting and
withdrawing unit, means for operating the grip
pers alternately for every two picks inserted from
the same side of the shed, and means for operat
ing the cutter after drawing o?’ weft from the‘ 65
supply substantially equal to two continuous weft
lengths.
19. In a loom of the character described, the
combination with shedding means for forming a
plurality of sheds, a stationary supply of weft 70
outside the shed, means comprising a plurality of
positively controlled weft inserting and withdraw
ing units on both sides of the shed to draw off
from the supply, insert, and transfer the weft
within the sheds, to lay a leg of a “hairpin” loop 75
‘2,106,727
of weft, two grippers and a cutter outsde the shed within the sheds, to lay a leg of a “hairpin” loop
for each inserting and withdrawing unit, means of weft, two grippers and a cutter outside the
for operating the grippers alternately for every ‘shed for each inserting and withdrawing unit,
two picks inserted from the same side of the shed, means for operating the grippers alternately for
and means for operating the cutter after drawing every two picks inserted from the same side of 5
off weft from the supply substantially equal to the shed, means for operating the cutter after
drawing off weft from the supply substantially
two continuous weft lengths.
20. In a loom of the character described, the ‘equal to‘ltwo continuous weft lengths, and thread
combination with shedding means for forming , guiding, means for positioning the weft selectively,
10 a plurality of sheds, a stationary supply of weft to be engaged by the inserting portion. of a. weft 10
outside the shed, means comprising a plurality
of positively controlled weft inserting and with
drawing units on both sides of the shed to draw
off from the supply, insert, and transfer the weft
inserting-and-withdrawing unit moving’ into
either shed.
ALBERT W. DROBILE.
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