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Патент USA US2120187

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June 7, 1938.
Original Filed Feb. 14, 1936
s sheets-Sheet 1
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June 7, l1938.
Original Filed Feb. 14, 195 6
3 Sheets-Sheet 2
June 7, 1938.
2,120,187 '
origin-a1 Filed Feb. 14, 193e
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_» APatented June 7, 1938
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2,120,187 ,
» «UNITED .STATE-.S `_pAT1-:arf_for1=1CE`ï s ,
`Harry Avery -Raynor, Wollaton Park, Nottingham,
’ original application February 14,1936, serial Naf
63,925, -now Patent No.I 2,108,925. Divided amav
this >application April -30,
1937, « Serial No.
In Great Britain February 15, 1935- '
3 claims'. ¿(01. cfs-9)>
This' inventiòn is for a knitting machine and >a.
loops thereof through the _pierced weft thread
method of machine knitting- and the invention
Aand to cast off the latter in knitting.
The invention is particularly applicable to
_ _ relates to the prodnctionof- that type- of fabric
embodying one or more thread bars, other than
elastic knitted fabrics, i. e. fabrics including elas
tic threads; and in' this connection the aforesaid
the stitch 'thread'or threads, extending weft-wise
of the fabric, i. e. in the direction of the stitch
courses,V and anchored in the _fabric _by stitch
Y '
composite weft bar or each or- selected of same
securedin the fabric may embody a plurality of
elastic .strands extending alongside each other
Heretofore a knitted fabric of the above type
has been proposed embodying> a transversely ex
tending strand or plurality thereof locked in the
andsuitably bound together, one or more of said
elastic strands being vanchored by stitch loops 10’
"of one stitch course and another or others by loops '
_ fabric by loops ofthe fabric extending through
of a succeeding course.
thestrand or each of same. In this proposed
fabric, however, the > transversely -extending
For the purpose of more'fully describing the I
nature of this invention reference will now be
strand _or each strand through which the' fabric ' made to the accompanying drawings, wherein:
loops pass is constituted by a single thread such . - ' Fig. 1 _is a face view of va portion of rib knitted
as a wrapped elastic thread individually'intro- _ fabric according to this invention.
duced-and locked in-the fabric, and in the pro?
-li‘ig. 2 is a section through the fabric.
-Fig.- 3 is a face View of ai modified fabric.
Fig. '4 is a section of thezfa'bric shown in Fig. 3. 20
duction of the fabric> on a circular knitting maf
chine only one strand is fed tothe machine. -
Figs. 5 to 14 inclusive- are' detail Views illus- .
A characteristic-feature of the fabric-made by
. the exercise of the present invention consists in. - trating-successive steps in the production of the \
' a weft-wise extending bar or >bars each _of which _ fabric shown in Figs. 1 'and~2.
embodies a plurality of cores, pillars or 'strands"_ _' Fig, 15 is an
_ elevational view of part of a circu
extending alongside' each other and -so con _ lar knitting machine for producing the fabric.
Fig_._16 is an enlarged detail-view of part of the Y
nected 'as to be simultaneously introduced into .
the fabric as a composite bar">> or braid> and.> -'machineshown _in Fig. l5 but looking at same.
anchored» in a fabric by'loops which pass be-.-~ ~from the opposite side.
Ytween Ysaid cores', pillars or strands. vBy provid- . - Fig. 17 is afdetail -view showing one method of Y
ing a plural core or plural stranded weft bar- in y making a dual stranded weft for incorporating
lieu of a single strand weft, it
be appreciated in the knitted fabric.'
that the production of the fabric is considerably
By way of. example, the invention will now Vbe '
facilitated, as any'difficulty experienced inv cans--` Vdescribed as-applicdto a rib knitted fabric, e.v g.
I ing a _needle and stitch loop to pierce a single Í‘ a one-and-one _rib having incorporated therein
strand, and particularly the 'encircling covering
>Weft'wise extending elastic-thread bars I. ' Each 35
of a single elastic or other thread, is. eliminated,
it being amatter of comparative ease to pierce
a composite weft bar or braid .between -the cores
or strands. Additionally, the passag'ejof loops be40
of- the said weftthread barsl may consist of two'
_ rubberstrands or threads 2 each wrapped with
' one or 'more layers 3 of cotton or other desired
' .yarn in the well-known manner, and the two
provides a more secure and positive anchorage of
wrapped -rubber strands -2 _being _connected or 40
bound together alongside each other so as to con
the >weft in the fabric. '
stitute a narrow braid, the covered elastic strands
tween the cores or 'strands of a vcompositevweft
constituting .longitudinal pillars in said braid.
chinehaving hooked needles, means for feeding _ '_This braided weft l is so incorporated inthe rib
The present invention provides a'lç-nitting ma.
45 knitting thread thereto, means for operating said
needles to knit loops of said thread, means _for
feeding a >weft thread to the needles,`means"for
locating said weft thread below' the points of the
needle hooks, means for causing said pointsI to _'
pierce said weft thread', means for clearing said
_ pierced weft thread over the bends of the hooks of
Y the needles that pierce it onto the stems of said
» needles, -and means for operating said weft-trans
'55 fixing needles to take knitting thread and to draw
fabric that one of the covered elastic strands or 45
pillars-2 .extends between and is gripped between
the front stitch loops l and rear stitch _loops 5 of
one stitch course, while the other covered elastic
strand or pillar of the same braided weft ex-‘tends between and is gripped between the front 50
and rear stitch loops 4 and 5 of the next succeed
ing stitch course; the stitch ’loops at oneside of
'the fabric, _that is to -say either the front loops 4
vor rear loops 5 passing through thebra'ided weft
l between the said elastic strands or pillars 2 so
as positively to anchor Athe weft from displace
ment in the fabric.
The above-described fabric can be produced
on any suitable type of rib knitting machine, and
Ul by way of example the production will now be
described of a fabric according to Figs. 1 and 2
on a circular rib knitting machine, reference be
ing made to Figs. 5 to 14 of the drawings. For
convenience of description the operation of a
10 single cylinder needle 6 and its co-operating dial
courses, the cylinder needle stitch loops being
drawn through the braid between the strands
thereof so as positively to lock the braid in posi
By feeding the dual strand braid at alternate Cl
courses, that is to say by causing the needles to
pierce said braid at alternate courses, an elastic _
strand is incorporated in each successive course
of stitches as before described. If desired, how
ever, the stitch courses embodying the braided l()
weft may alternate with other courses devoid of.v
weft. The weft I when incorporating elastic
threads may be fed to the needles under suitable
needle 1 is referred to. Let it first be assumed
that the cylinder needle 6 and the dial needle
1 have been retracted to the knock-over position
with the last made stitch loops 8 and 5 carried ' tension and means are provided for guiding the Í
in their hooks (Fig. 5); the cylinder needle 6 is weft to the needles so as to ensure said needles
now projected to a tucking height with the stitch piercing the weft between the elastic strands
loop 8 over the latch, the dial needle 1 being re
In Figs. 15 and 16 is illustrated a part of a cir
tained retracted (Fig. 6). The cylinder needle
6 during the lowering thereof is now brought cular knitting machine . showing more clearly
round into engagement with a toothed or tricked how the dual stranded braid is fed to the cylin 20
rotatably mounted wheel or disc III which is der needles. The braid I is drawn from a suit
able rotatably mounted supply I8 and passed '
formed at its periphery with a horizontal chan
nel I2 through which the dual stranded elastic through a guide I9 and between the circumferen
braid I is fed, said braid being fed horizontally tial faces of a pair of truncated conical feeding
beneath the hook Il of the cylinderneedle 6 in rollers 20 resiliently pressed together by a spring 25.
such a manner that the tip or point of the hook is 2I or other suitable means. The speed at which
the braid I is fed to the machine can be ad
caused during the continued downward move
ment or retraction of the Vneedle to pierce the ljusted as required by moving said braid upwards
or downwards between the rollers 20 so as to co
braid between the two elastic strands or pillars 2
thereof (Fig. '7).- As the braid I is drawn by the act with the varying diameters of said rollers, 30
and this may be accomplished by imparting rota
needle hook I I out of the channel I2 in the mem
ber III said braid is brought into a position with -tion to a screw-threaded rod 22 on which is
the two strands 2 thereof located vertically one mounted an arm 23 retained from rotation and ,
above the other (Fig. 8), and the needle 6 then carrying the guide I9, the rotation of the screw
22 traversing said guide arm 23 up or down as
passes beneath the periphery of a horizontal ro
tary disc or the like I3 which'acts on the dual `
stranded braid l to press one of the strands
thereof over to the back of the needle hook and
bring the pressed over strand of said braid above
40 the loop 8 (Fig. 9).
'I‘he cylinder needle 6 and
dial needle 1 are now simultaneously projected to
a thread feeding position, and in doing so the
stitch loop 8 on the cylinder needle together with
the dual stranded braid l is cleared below the
cylinder needle latch, and the_ stitch loop 9 on
the dial needle is also cleared behind the dial
needle latch, and a new thread I4 is fed to both
required. The braid I after passing between the
feed rollers 20 enters a flat channel 24 of a fixed
guide member 25, which channel 24 brings the
braid into position with the two strands 2 there
of horizontally disposed, and from this channel 40
2l the braid is guided into the horizontal channel
I2 at the periphery of the aforesaid rotatably
mounted toothed or tricked wheel ID, and the
rotation ofsaid whee1 may be effected by the
needles coacting with the teeth or tricks there
of. This toothed and channelled wheel I0 serves
to feed the dual stranded braid I_ beneath the
hooks oi’ the descending needles and positively
needles. The cylinder needle 6 is now retracted
and hold said braid in the_ correct posi
to the knock-over position and in so doing a loop - locate
ensuring that the points of -the needle 50
50' I5 formed from the thread Il is drawn through hooks successively pierce the braid midway in its
the old loop 8 and through the braid I midway
in its width between the elastic strands 2, said width, i. e. between the strands 2; saidbraid
braid I being thereby knocked over with the old being held up against the needle by which it is
loop 8 (Fig. 11). Following this the old loop pierced. As the needles leave the teeth or tricks
55 9 is knocked over from the dial needle 1 and a
new loop I6 is drawn thereby from the thread I4
(Fig. 12). The two needles 6, 1 are now simul
taneously projected to clear the last formed loops
I5 and I6 and receive further thread I1 (Fig. 13),
and said needles are operated in the customary
manner to form further- stitches from the last
in the wheel I0 the braid I assumes a position on 55
the hooks with the strands 2 thereof one over the
other one inside and the other outside the hooks.
After piercing the braid and while the cylinder
needles are retracted, the part of the dual strand
ed braid outside the needle hooks is pushed over
to the back of the needles by passing beneath the
horizontal disc I3, which disc also functions to
fed thread (Fig. 14).
IBy> the above-described‘operation it will be bring the strands 2 of the braid I side by side.
From this position the machine' operates in the
seen that one of the strands 2 of the dual strand
65 ed braid I becomes embraced between stitch manner previously described to draw thread loops
loops produced on the cylinder and dial needles, between the strands of the braid and fasten the
that is to _say between the front and rear stitch latter in the fabric.
The particular construction of the fabric em
loops of the fabric, and the second strand of the ,
- braid is so located as to become embraced be
70 tween the cylinder and dial stitches produced
at the next succeeding course; it being under
stood that at said second course the dual strand
ed. braid is not fed to the needles. Thus it will
be appreciated that the two strands 2 _of the
braided weft I arel embraced in succeeding stitch
bodying the plural stranded weft bars I may be
varied without departing from the scope of the 70
present invention. For instance fancy effectsv
may be obtained by introducing at intervals dif
ferent types of stitches and/or different-kinds
of stitch thread, and as an example a modified
form of- rib fabric is illustrated in Figs. 3 and 4 75
wherein, as lcompared with the fabric shown in
-.1. A method of producing fabric on a rib knit
Figs. 1 and 2, an additional thread course 2B is
introduced at predetermined intervals and tuck
stitches 21 are formed in alternate needle wales
at said additional courses, said tuck stitches pref
ting machine comprising the following sequen
tial operations, namely:-- producing knitted
erably occurring in the wales produced by the
set to 4a tucking height, simultaneously feeding
needles 'I. If the additional course 26 with tuck ` below the hooks of said projected needles a plu
stitches 21 is knitted immediately after intro
rality of weft threads or strands connected to
ducing and anchoring each plural stranded weft gether side by side to form a composite bar, re
bar I, and the tuck stitches are made in the stitch tracting said needles to cause the hooks thereof 10
wales appearing at the back of the fabric, i. e. to pierce the plural stranded weft at a position
on the dial needles, the effect produced is to between said strands, pressing said plural
shorten or tighten-up‘the cylinder needle stitches stranded weft over the needle hooks so as to bring
which are drawn through the weft braid I at the one or more strands on one side and the remain
front of the fabric, >thereby bunching-up y the ing strand or strands on the opposite side of the
fabric over the anchored weft braids I and form
needles, projecting needles of both sets to clear
ing outstanding ribs or lines running weft-wise the old loops thereon and feeding stitch thread
of the fabric as at 28 in Fig. 4. The thread in
thereto, retracting the needles of both sets to
troduced for making the additional stitch courses clear the old loops thereon and feeding stitch
2i with tuck stitches may be different from that thread thereto, retracting the needles of both
used in making the remainder of the fabric. sets to produce a new course of stitches and in so
For example, the main fabric may be made of doing to cast oif the plural stranded weft bar
cotton or wool and the additional courses 26 of and draw stitch loops therethrough and subse
artificial silk thereby producing projecting vlines quently operating the needles of both sets to pro
of artificial silk on the fabric face.
duce a further stitch course.
The braided weft I embodying the elastic
2. A circular knitting machine embodying in
strands 2 may be produced on any suitable braid
combination a needle carrier with needles mount
ing machine. For example, a machine may be ed to reciprocate therein, stitch thread feeding
employed wherein a plurality of spindles (e. g. means, means for feeding under tension and at
six) traverse an endless track of double-loop an adjustable speed a composite weft composed
or ñgure eight formation, a rubber strand be
of a plurality of elastic or other cores connected
ing fedv within each loop of the track. In Fig. together side by side, a rotary wheel or disc hav
17 is shown a small portion of dual stranded ing peripheral teeth or tricks adapted vto be en
braid illustrating how same may be constructed. gaged by the needles and also having a peripheral
'I‘he two strands 2 are each spirally wrapped with channel functioning to guide the plural stranded
cotton or like covering threads 29, and the strands weft beneath the needle hooks, said channel co
so wrapped are bound together side by side by operating with needles coacting with said wheel
binding threads 30 which pass alternately over teeth or tricks to hold the composite weft up
one covered strand and beneath the other strands against said needles and locate said weft so that
in the manner of a double-loop or figure eight, the points of the needle hooks pierce said weft
the said binding threads intersecting each other between the strands thereof, and means for press
between the two strands so as to space or divide
said strands suñlciently for enabling a needle to
pierce the braid between same. Where the cov
45 ered or wrapped strands 2 are of rubber the spi
ral twist of the covering 29 of one strand is ad
vantageously opposite to that of the other strand,
as shown in Fig. 17, so that the finished braid is
maintained flat.
stitches on two sets of needles which draw loops
in opposite directions, projecting needles’ of one
This application is a division of application
Serial No. 63,925, ñled February 14, 1936, which
eventuated into Patent 2,108,925.
I claim:
ing one or more of the strands of the weft so
pierced over on to the back of the needles and
maintain the remaining strand or strands on the
front thereof.
3. A circular knitting machine according to
claim 2 wherein said machine embodies two sets
of needles functioning to draw stitch loops in
opposite directions to produce rib fabric and
wherein the composite weft is fed. to one set of 50
needles, e. g. the cylinder needles, only. _
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