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Патент USA US2131231

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Sept. Z7, 1938.
2,131,231
V. MORRIS
MAGHINE FOR AND METHOD 0F MAKING KNITTED ARTICLES
Filed Sept, 17, 1935
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Patented Sept. 27, 1938
’
. A2,131,231
-UNITED STATES PATENT "o1-‘Fica
. l 2,131,231
f
MACHINE FOR AND METHOD oF MAKING '
KNITTED
ARTICLES
'
v
ì
`
Virgil Morris, Daisy, Tenn., assignor to-Rich
ville, Ga., a corpo
mond Hosiery Mills,
ration of Georgia
Application September 17, 1935, Serial No. 40,942 v
s claims. (o1. ses-9)
My invention relates to knitted articles, and by anincreased supply of elastic material over>
more particularly to improvements in knitted
socks, stockings, dresses, underwear, and the like,
and to the method of weaving, floating, or other
_ >5 wise inserting into the knitted article, rubber or
“Lastex” thread, or in making rubber or “Lastex”
thread a. part of such article by an improved
machine.
It has been the practice ,in the prior art to use
l0 rubber, “Lastex,” elastic or other material which
stretches in a knitted article to hold it in place
on the body, when such article is being worn.
In the case of socks and stockings such lastex,
rubber, etc. is made a part of the top in a rib
15 hing machine while the other parts thereof are
knitted in the regular .plain knitting machine,
then by a separate operation the top is joined
to the body of the sock or stocking through what
is known as the “loose course” or “transfer line”.
2o Each of these operations »requires additional
equipment, added labor, and reduces the output,
' thereby resulting in added expense and increased
cost of production,
It has been suggested that the tops be elimi
25 nated, and the whole article be made in a single
machine where the elastic material may be formed
into the article as it is made by such machine. As
l such operation comprehends that the elastic will
be knitted into the article along with the yarn, it
30 is necessary for the needles of the machine to grab
or catch the elastic material in the hooks and
form stitches with it in the yarn of the article,
and in so doing they cut or otherwise injure it
and reduce its useful life. In some cases the elas
' 35 tic material is entirely broken by the hook, with
resulting delay and reduction of production.
Articles made by the above method will contain
elastic material stitched therein about once every
A
four or five welts of yarn. This permits the forma
40 tion of loops of elastic material extending around
the inner circumference or wall of the article and
permits the toe nails of the wearer to be caught
therein, and- break such material in putting on
or removing the article jwith consequentannoy
such area.
-
'
'
Applicant, with a knowledge of these facts, has,
as an object of his invention, the overcoming of
the above objections and defects by producing an 5
article containing elastic material, which bears
a different relation to the knitted yarn of the
article, than has been known -by laying or ñoat
ing the elastic material into the material of the
article by a new and novel process.
10
The method is carried out by using the regular
plain knitting machine as it is used to form the
other parts of the sock or stocking or‘other gar
«ment. It comprehends raising every odd, or every
other, needle of said machine (where the ñat top 15
revolving cylinder machine is employed) to such
a height that a finger in what is here called the
latch rin‘g feeds “Lastex” or rubber thread there
to below the latch of said raised needle, where
upon each raised needle is lowered and as the 20
normally positioned needles are slightly raised
the thread falls behind said normally positioned
needles, then yarn is fed to the hooks of all of
the needles over the elastic thread, and the nee
dies, in their knitting operation of 'drawing the 25
new yarn through the oldloops on their bodies,
shed the elastic thread over their tops and such
thread is formed into the knitted material by a
i‘loat about each stitch of yarn Yin saidy article.This eliminates the necessity for theuse of a 30
ribbing machine and the separate operation of
joining the ribbed element to the body of the
sock or stocking, with a resulting increased pro- .
duction at a reduced cost 'and some saving ofy
material. It also prevents cutting of or injuring 35
the elastic material by the hooks of the needles
-ordinarily employed to knit the elastic material
with the yarn.
.
'
«
The article resulting from this process contains l
elastic material of longer life in virtue of being 4o
woven or floated into su'ch intimate' relation with
the material of the article that it can hardly be_
noticed, and certainly is not subject to severance
.or Ibreakage bythe wearer while removing it
or putting it into place.A The elastic will also be 45
free to> move with respect to the strands of yarn
45 ance.` These loops of elastic material give an un
even contracting of the article about the wearer’s » oi’ the article to remove points of stress, and thus _
body, and an‘unsightly púckering or-bulging into
pleats. Such loops also permit of easy breaking
' 50, «when washing the arti-ae.
A knit in elastic also lends itself to many other
produce a constant and well distributed stretch
ing oi' the elastic Ymaterial throughout its length,
serving to increase its life.
»
.
l|50
The invention will be clearly understood from ~
disadvantages.` The stitches made with the yarn
the following description when read in connec
of the article retards or prevents relative move
tion with the attache‘d drawing, of which the fig- ,
ment between the yarn and the elastic material
55 so that localized stress cannot be accommodated
ure shows a needle cylinder slit and rolled out
.flat with all of its associated elements. f ` J
55 A
2
2,131,231
,
.
)
Referring to the drawing in detail, the figure
shows a cross-sectional view of a portion of a
or rubber thread 2 under the latch I1 but over`
ñat top revolving cylinder type knitting machine,
the heads of the normally positioned needles.
All of the needlesthen successively pass to the
where a. cylinder is adapted to rotate about a
cams b and c where the raised needles are gradu
vertical axis,> and having longitudinal grooves
formed around-its entire outer circumference into
ally forced-downwardly by the cam b and the
normally positioned needles are slightly raised by
which needles i2 are slidably fitted, and also slid
ably seated in every other groove beneath each
odd needle is a jack I3 for raising its accompany
ing needle. -Each of said needles l2 are bowed
(not shown) to provide a friction fit in its groove
so that such needle will remain in the position
where it is placed or moved without auxiliary sup
port, but the jacks are loosely iitted into the
15 grooves and must always be supported by addi
tional means when in raised position.
the cam c, which engage the lugs- I4 on said
_ At the ltop thereof each needle is formed with
v a hook ls and just below the hook and to the body
of the needle is secured a latch I‘l.` Adjacent the
20 bottom of each needle I2 is formed a lug i4, andl
at the bottom of each jack I3 is formed a like
lug I5. The purpose of these lugs is to engage
cams mounted on the stationary part of the ma
chine for raising or lowering such needles or jacks
int: manner to `be more clearly described herein
af r.
d designates what may be called a latch ring
employed to prevent the latches I'l on'w the needles
from rising and covering the hooks when the
needles are in raised or normal position. l 9 desig
nates a finger for feeding “Lastex” or rubber
» thread to the needles, and I0 designates a finger
for feeding yarn for the same purpose. The
clipping means for cutting the “Lastex” or yarn
at the point where it is no longer desired to feed
such yarn or “Lastex” has not been shown as it
is standard equipment and acts in its well known
`
40
45
55
needles. By this operation the “Lastex” or rub
ber thread previously fed under ’the latches of
the raised needles is placed behind the _hooks of 10
the adjacent normally positioned ». needles on
their back side away’from the latches.
After this the needles move on and al1 are
forced downwardly by the action of the~ station
ary cam e acting on the lugs i4 as they ride over
the surface of such cam, during which operation
yarn is fed to the hooks of all of the needles over
the “Lastex” or rubber thread by the finger I0.
During all of these operations the latches of
the needles are maintained in lowered position
by cam ring d.
`
The needlesthen pass successively to station
ary cam f where they are again forced down
wardly by the operation of said cam on the lugs
Il of the needles as they traverse the surface
thereof. As such needles are lowered by cam f
they successively clear the cam ring d so that the
loops of yarn in this relative movement force the
latch members I1 upwardly to place a closure
across the hooks and retain the newly fed yarn
trapped therein. As the needles are depressed
still further by the action of the cam f the
\“Lastex” or rubber thread, in the case of the odd
needles, slides of! of the closed latch over the
head of each of said needles, and in the case of
the even needles, the.“Lastex” or rubber thread
slides of! of the backs of the needle hooks in
and usual way. a designates a stationary Jack
leaving each of those needles, and such thread is
cam of greater height than that ordinarily em
by this action floated or woven into the knitted
ployed and acts to raise the jacks through their ‘ article, as the needles in being further depressed
lugs I5, and to raise their corresponding needles pass through the old loops of yarn, shed them
to a position where the finger 9 may- feed “Lastex” from their body, and pull the new yarn trapped in
or rubber thread 2 below the latch on _each of said their hooks through the'old loops along with
needles. b designates a stationary cam, shown them thereby forming`a new loop each time a
in dotted lines, which acts upon the lugs I4 of the needle reaches the lower extremity of cam f. 45
raised needles to lower them. c designates a The needles then successively pass to stationary
stationary cam, dotted in, which acts upon lugs cam g where they are raised by- its action on the
Il of the normally positioned needles, that is, lugs I4, as they-ride over it. 'I'he cam g raises
the even needles which have no lacks under such needles to their normal position and such
them, for slightly raising them. e designates a operation forces the newly formed loop of yarn 50
stationary cam, dotted in, for successively lower
I down with the opening latch and over it, onto
ing all of the needles when such point has been and around the body of the needle, thus com
reached in the revolution, by acting on their lugs pleting a cycle in the operation of the machine, , _
I4. j designates a stationary cam, dotted in, for so that they may again passon for the action of
successively lowering the needles still further by the jack cam a. This cycle is repeated again
acting on their lugs Il, and g designates a sta
and again until the operation is completed.
tionary cam, dotted in, for finally restoring eac
_ “Ißstex” or rubber thread may be inserted in
of the needles to normal position.
'I'he operation ci' the machine and the process
of inserting “Lastex” or rubber thread -while
making the article is as follows:
only a part ofthe circumference of the knitted
article by only f
g it to a limited number of
needles each cycle, and such thread may be laid
into only every second.. third, etc. welt of the
In the position shown each of the needles I 2 has
a loop of ‘yarn I around the body thereof, and
needle by the jack cam a instead of every other
-
the needles are-moving as a part of the revolving Y
65 cylinder II in the direction indicated by the
arrows in the ñgure.
Beginning at the extreme right it is _seen that
every odd needle I2 is being gradually raised by
its corresponding jack I2 since in their movement
70 they are riding up the wall of thev stationary jack
‘ cam a,`while the adjacent even needles remain at
knitted article by raising every third, fourth, etcgm
needle.
'
'
While the method here described is presented
in .connection with a fiat top revolving cylinder
knitting machine, itis not to be considered to
be limited thereto.
.
v
'
Having thus described my invention, I claimv
1. The method» of incorporating elastic thread
into a knitted article comprising rotating a ring
their normal position unaffected by said :lack cam v*of knitting needles', successively raising each of
as they ride over it. ~The oddf needles nnally a plurality of' said needles, feeding said thread
reach their ultimate height as they successively below vthe latchof each of the raised needles,l
pass the point where the finger i feeds “Lastex” successively lowering said raised needles while
9,131,931
3.
raising normally positioned needles to place the
thread behind said normally positioned needles.
cylinder having a circular series of independent
lowering each of said needles, feeding yarn to
their hooks, and _successively lowering each of
said needles still further to knit the yarn and
incorporate the elastic thread in the fabric.
plurality of said needles, means for feeding said
2. A method of incorporating elastic thread
into a knitted article comprising successively
raising each of a plurality of needles of a circular
needles. cam means for successively raising a
thread below the latch of each of the raised
needles, cam means for successively lowering
each of said raised needles and raising normally
positioned needles to place the thread behind said
normally positioned needles. cam means. for
lowering each of said needles. means for feedingl
10 series. feeding said thread below the latch of
yarn to‘their hooks. _and cam means for succes
each of the raised needles, successively lowering
said raised needles while raising normally posi
tioned needles, lowering each of said needles and
feeding yarn to their hooks, and successively
15 lowering each of said needles still further to knit
_the yarn and incorporate the elastic thread in
sively lowering each 'of said needles to knit' the
yarn and incorporate the elastic thread in the
fabric.
5. A knitting machine for incorporating elastic
the fabric.
3. A method of incorporating elastic thread
into a knitted article comprising successively
raising each _of a plurality of needles of a circular
series, feeding said thread below the latch of
each of the raised needles, successively lowering
said raised needles while raising normally positioned needles, feeding yarn to the hooks of
. each of said needles, and successively lowering
each of said needles to knit the yarn and incorporate the elastic thread in the fabric. '
4. A knitting machine for incorporating elastic
thread into a knitted article comprising a needle
10
thread into a knittediarticle comprising a needle
cylinder having a circular series of independent
needles. cam means for successively raising each
of a plurality of said needles, means for feeding
said thread below the latch of each of the raised
needles, cam means for successively lowering 20
each of said raised needles and raising normally
positioned needles to place said thread behind
said normally positioned need1es,'means for feed
ing yarn to the hooks of each of said needles,
and cam means for successively lowering each 25
.i oi’ said needles to knit the yarn and incorporate
the elastic thread in the fabric.
vmnn. MORRIS.
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