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Патент USA US2391665

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Dec. 25, T945.
‘E. WlLDT ETAL
2,391,665
KNITTING MACHINE
Filed Aug. 23, 1944
3 Sheets-Sheet l
INVENTOR5,
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Dec. 25, 1945.
E. WILDT ET AL
2,391,665
KNITTING MACHINE
Filed Aug. 23, 1944
3 Sheets-Sheet 2
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ATTORNEY,
Dec. 25, 1945.
E_ wlLDT ET AL
2,391,665
KNITTING MACHINE
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Patented Dec. 25, 1945
2,391,665
UNITED ‘STATES PATENT OFFICE
2,391,665
‘KNITTING MACHINE
Edwin Wildt, Henry Harold Holmes, and Albert
Henry Widdowson, Leicester, England, assign
ors to Wildt and Company Limited, Leicester,
England, a British company
Application August 23, 1944, Serial N0. 550,739
In Great Britain September 6, 1943
' This invention relates to knitting machines, and
(C1. 66-24)
1/ is supplied to the set of needles 5, 6, while at
has for its object to provide such a machine for
producing a knitted fabric of an interlock struc
ture with transferred stitch or locp effects. A
fabric of this character forms the subject-mat
ter of our co-pending United States application
the other location there is a second feeder plate
8 through which a yarn 111 is fed independently to
the other set of needles 51, 61 (see Figure 4).
As shown in Figures 1 and 2, the cylinder nee
dies 5 are formed with knitting butts 5a disposed
10 Claims.
Serial No. 550,740, August 23, 1944.
In the accompanying drawings,
to travel in the direction of the arrow A in a track
T in the cam box 2, while the alternate cylinder
needles 51 are formed with knitting butts 5b dis
Figure 1 is a vertical sectional view of the head
of a cylinder and dial machine constructed in
posed in a lower plane to travel in the same direc
tion in a track ‘I’1 in the said box. Moreover, all
Figure 2 is a developed view of the cylinder
of the needles in the cylinder are of loop trans
cam system of the machine, as seen from inside
ferring form. Thus, as shown more clearly in
the cam box, showing also a few of the cylinder
Figure 5, each of the said needles includes a loop
needles and associated jacks,
engaging shoulder to and a loop expanding for
Figure 3 is a plan view of the dial .cam system,
mation 5d whereby the stitch or loop I’ to be
Figure 4 is a view somewhat similar to the left
transferred is engaged and retained in a later
hand side of Figure 2 but showing, in addition,
ally expanded condition so as to enable it to be
the set out of the cylinder and dial needles and
entered by the hook of the dial needle to which it
the feeders for supplying yarns independently to 20‘ is to be transferred. To‘facllltate such entry of
the respective sets of these needles as will be
a loop by a dial needle hook, each cylinder needle
hereinafter described,
is relieved at the appropriate side thereof in the
Figure 5 is an enlarged detail perspective view
manner indicated at 5e and also similarly re-_
showing a loop in the course of being transferred
lieved at the opposite side at I! to enable the
accordance with the invention,
'
fro‘iin a cylinder transfer needle to a dial needle, 25 needle to ?ex laterally. The main body portion
an
Figure 6 is a further detail perspective view
showing a dial loop being transferred to a cylin
der needle.
Like parts are designated by similar reference
characters throughout the drawings.
so
er ends of the cylinder needles 5 and 51 are shown
terminated at their respective ‘cam tracks-for
The machine illustrated includes a cylinder I
the sake of clarity as hereinbefore mentioned‘: ‘
surrounded by a cam box 2, and a dial 3 sur
mounted by a dial cam cap 4. The said cylinder
and dial are furnished with two sets of needles,
one set comprising cylinder needles 5 and dial
needles 8 so arranged as to knit a ribbed web of
of each of the cylinder needles is made thicker
than the corresponding swaged needle hook por
tion to enable it to be ‘comparatively deeply milled
at the two places lie and 5)‘. InFigure 4, the low-v
in practice, however, all of such needles are of
the same length to enable them to be used in
35
conjunction withrintermediate selector Jack; I
adapted for operation selectively whereby any
desired cylinder needle or needles can be caused
ill rib combination, and the other set compris
to transfer a stitch or stitches thereon to a di
ing cylinder needles 51 and dial needles 81 simi
rectly opposite dial needle or needles. That is
larly arranged to knit another ribbed web of the 40 to say, the selection is common to all the cylin
same rib combination. The needles 5 and 51 al.
der needles, irrespectively as to whether they
ternate in the cylinder I, while the needles 8
have knitting butts in the track T or in the track
and 61 similarly alternate in the dial 3 so that
T1.
~
The cylinder needle selecting mechanism in
the dial needles are located directly in line with
the cylinder needles as will be clear from a con 45 cludes an intermittently rotatable selector drum
Iii (Figure 1) furnished with bits having butts
sideration of Figure 4. It is important to note
li'a disposed at different heights according to the
that in this ?gure the needles are represented
selections to be effected. A bank of interme
in a purely diagrammatic fashion to show the
diate selector cams I2 is provided and these cams
needle set-out more clearly; actually, the alter
are adapted to engage with corresponding butts
nate cylinder needles instead of being of respec
Ila on presser members II located in the cylin
tively different lengths as shown in Figure 4, are
of the same length as and for the purpose here
der tricks in front of the lower ends of'the Jacks
inafter explained. In the machine there are also
9. These lower ends of the jacks are resilient
and normally sprung outwardly. Each jack 9,
two feeding locations. At one of these there is
provided a feeder plate 1 through which a varn
moreover, has a lower butt to and an upper butt
‘
2
2,891,665
9b to engage beneath the associated needle. The
construction and arrangement is such that the
shaped lower extremities 9c of those jacks which
are pressed in by presser members 13 are en
Serial No. 551,518, August 28, 1944. Alterna
tively, more particularly as regards a machine of
the cylinder and dial type adapted to produce
interlock fabric as hereinbefore set forth, the
gaged by the leading edge Ila of a retaining cam
I4 and thereafter automatically maintained in
that position, whereas the lower butts 9a of the
remaining jacks are left in position to be engaged
by a jack raising cam I5 (see Figure 2). When
embroidery mechanism may be generally of that
form speci?cally described with reference to the
drawings in United States speci?cation No.
tively adapted to operate the needles in conjunc
dial 3.
2,342,541.
It will be understood that where a needle loop
ever a jack is allowed to be raised in this way 10 (e. 8. plain) is transferred, the needle from which
this loop has been removed takes ground yarn
by the cam IS, the associated cylinder needle
‘at the next course but has no old loop thereon
will be elevated and its knitting butt engaged by
to pull the yarn through. Consequently, in ef
a transfer cam, whereby the needle is further
fect, a relatively wide sinker loop is formed be
raised to transfer height at which the loop there
on can be penetrated and taken by a dial needle 15 tween the preceding and succeeding (e. g. rib)
loops in the same course, but at the next course
as hereinbefore described. Thus, for those nee
a new 100p (e, g. plain) is pulled through this
dles having knitting butts 5a in the track T there
wider loop.
is a transfer cam 18, whilst a similar transfer
For example, Figure 7 shows a vertical sec
cam I1 is provided in the track T1 for engage
tional elevation of the head of the machine simi
ment with selected knitting butts 5b at appro
lar to Figure 1 and to the same scale, but with
priate times for the stated purpose. After cylin
the essential part of an embroidery mechanism
der needles have completed a transferring action
added.
it is necessary to open the latches 1 thereof, for
A cylinder b is ?xed to a gear a so that it is
which purpose there are provided needle raising
cams I8 and 19 in the tracks T and T1 respec 25 driven with the needle cylinder i and needle
tion with a latch opener-shown diagrammati
cally and designated by the numeral 20 in Figure
I
A bearing 0 supports and locates the cylinder
b to enable feeder d to take up its correct loca
tion in relation to the needle 5 shown dotted in
2. The needles are thereafter restored to their
normal low level by guard cams 2| and 22. In 80 thread wrapping position.
A fulcrum f allows the feeder d to be moved
the ‘track T there are also clearing and stitch
back and forth when operated by any type of
cams 23 and 24 respectively for operating the
selector acting on butts e to move the wrapping
cylinder needles 5, and similar cams 25 and 26
portion g of the feeder d, the portion a being
in the track T1 for operating the needles 51.
Somewhat similar‘ arrangements of transfer 35 twisted, as is common practice to pass needle
hook on opposite sides during the movement of
needles and pattern controlling means may be
the feeder. A retaining spring h secures the
provided in association with the dial 3 of the
feeder d in correct location.
machine. Accordingly, in the example illus
A bobbin rack i is secured to the gear a. The
trated, all of the dial needles 6 and 81 are also of
loop transferring form. The needles 6 have 40 rack carries a bobbin :1 the yarn of which passes
through a guide 122 on the inside of cylinder to
the feeder end 0.
As will be appreciated, there may be as many
embroidery thread feeders d and bobbins d as
the track DTthere is a clearing cam 21, a stitch
cam 28, a latch opener cam 29 and a transfer 45 needles, or any lesser number, according to re
quirements.
cam 30. Similarly, in the track DT1 there is a
What we claim then is:
clearing cam 3|, a stitch cam 32, a latch opener
1. In a knitting machine, in combination, a
cam 33 and a transfer cam 3|. In conjunction
plain needle bed, an associated rib needle bed,
with the dial cam system there is provided a
needle selecting mechanism of the character de 50 needles for operation in said beds, the plain and
knitting butts 6a accommodated in a track DT,
whilst the intervening dial needles 81 have knit
ting butts 6b accommodated in a track DT1. In
scribed in our U. S. Patent No. 2,153,019. Some
of the selectors included in this mechanism are
indicated at 35 in each of Figures 1 and 3, To
economise space in the drawing these selectors
are shown close to the dial. In the transference 55
rib needles being arranged in two independently
operable sets with one half of each set of needles
in alternating relationship in one bed and the
remainder of each set in similar relationship in
the other bed, so as to be capable of knitting two
interlocked ribbed webs, and each of desired
needles in at least one of the sets being of loop
of dial loops dl to cylinder needles, the knitting
butts of the dial needles concerned are brought
transferring form in which connection it includes
by the corresponding selectors 35 into the range
a loop engaging catch and a loop expanding
of the relevant dial transfer cams which func
tion to advance the said dial needles to such an 60 formation whereby upon appropriate endwise
movement of such needle a loop can be engaged,
extent that cylinder needles at that moment
expanded and retained so as to enable it to be
passing up the rise of a cam 36 (or 31) provided
entered by an appropriate receiving needle, yarn
in the cylinder cam system will enter the dial
feeding means for introducing yarns independ
loops in the manner shown in Figure 6. After
a dial needle has completed a transferring oper 65 ently to the respective sets of needles, correspond
ing sets of cam systems for causing the respective
ation it is withdrawn by a cam 38 or 39, as the
case may be.
sets of needles to knit, and loop transferring
mechanism including means for imparting the
Whenever selected cylinder needles are raised
to transfer their loops to dial needles the latter
aforesaid endwise movement to the transfer
are there to receive these loops by reason of be 70 needles, for the purpose herein speci?ed.
ing advanced by a cam 40 or 4|.
2. In a circular knitting machine, in combina
The machine hereinbefore described may be
tion, a cylinder, plain needles in said cylinder, a
equipped with plating mechanism such as the
dial, rib needles in said dial, the said plain and
embroidery mechanism described in the speci?
rib needles being arranged in two independently
cation of co-pending United States application 75 operable sets wherein the needles of one set alter
2,891,865
nate with the needles of the other set in both the
cylinder and the dial so that the rib needles are
located directly in line with the plain needles, and
each of desired needles in at least one of the sets
being of loop transferring form in which connec
tion it includes a loop engaging catch and a loop
expanding formation whereby upon appropriate
3
tion, a cylinder, plain needles in said cylinder, a
cam box which surrounds the cylinder and is pro—
vided with cams for operating the plain needles, a
dial, rib needles in said dial, a cam cap associated
with the dial and provided with cams for operat
ing the rib needles, the said plain and rib needles
being arranged in two independently operable
endwise movement of such needle a loop can be
engaged, expanded and retained so as to enable
sets wherein the needles of one set alternate with
the needles of the other setiin both the cylinder
it to be entered by an appropriate receiving 10 and the dial so that the rib needles are located
needle, yarn feeding means at at least two loca
directly in line with the plain needles and all of
tions for supplying yarns independently to the
the needles in the cylinder being of loop trans
respective sets of needles, different sets of cams
ferring form in which connection each of the
for operating the said sets of needles and causing
cylinder needles includes a loop engaging catch
them to knit, and means for operating desired 15 and a loop expanding formation whereby upon
transfer needles suchwise that knitted loops
appropriate endwise movement of such needle a
thereon are transferred to directly opposite
loop can be engaged, expanded and retained so as
needles.
to enable it to be entered by an appropriate re
3. In a circular knitting machine, in combina
ceivlng dial needle, alternate plain needles, more
tion, a cylinder, plain needles in said cylinder, a 20 over, having knitting butts in an upper track and
cam box which surrounds the cylinder and is pro
the intervening plain needles similar knitting
vided with cams for operating the plain needles,
butts in a lower track in cam systems in the.
a dial, rib needles in said dial, a cam cap asso
aforesaid cam box, yarn feeding means for in-,
ciated with the dial and provided with cams for
troducing yarns independently to the respective
operating the rib needles, the said plain and rib 25 sets of needles, and means for so operating desired
needles being arranged in two independently op
plain needles that knitted loops thereon are trans
erable sets wherein the needles of one set alter
ferred to directly opposite rib needles, all for the
nate with the needles of the other set in both
purposes herein described.
'
the cylinder and the dial, so that the rib needles
6. In a circular knitting machine, in combina
are located directly in line with the plain needles 30 tion a cylinder, plain needles in said cylinder, a
and each of desired needles in at least one of the
cam box which surrounds the cylinder and is
sets being of loop transferring form in which
provided with cams for operating the plain
connection it includes a loop engaging catch and
needles‘, a dial, rib needles in said dial, a cam
a loop expanding formation whereby upon appro
cap associated with the dial and provided with
priate endwise movement of such needle a loop 35 cams for operating the rib needles, the said. plain
can be engaged, expanded and retained so as to
and rib needles being arranged in two independ
enable it to be entered by an appropriate receiv
ently operable sets wherein the needles of one
ing needle, spaced feeders at which yarns are
set alternate with the ‘needles of the .other set
supplied independently to the respective sets of
in both the cylinder and the dial so that the rib
needles, the needles in the said sets being pro 40 needles are located directly in line with the plain
vided with butts in two different planes and pre
needles and all of the needles, in the cylinder
arranged in the cylinder and dial in conjunction
being of loop transferring form in'which con
with systems of the aforesaid cams respectively
nection each of the cylinder needles includes a
disposed in the cam box and dial cam cap and
loop engaging catch and a loop expanding for
having two separate tracks for the butts in the 45 mation whereby upon appropriate endwise move
different planes suchwise that the two sets of
ment of such needle a loop can be engaged, ex
needles knit respectively at the spaced feeders,
panded and retained so as to enable it to be
and means for so operating desired transfer
entered by an appropriate receiving dial needle,
needles that knitted loops thereon are transferred
alternate plain needles, moreover, having knit
to directly opposite needles.
50 ting butts in an upper track and the interven
ing plain needles similar knitting butts in a lower
4. In a knitting machine, in combination, a
track in cam systems in the aforesaid camv box,
plain needle bed, an associated rib needle bed,
yarn feeding means for introducing yarns inde
needles for operation in said beds, the plain and
rib needles being arranged in two independently
pendently to the respective sets of needles, a set
operable sets with one half of each set of needles 65 of jacks with patterning butts thereon for actu
in alternating relationship in one bed and the
ating the transfer needles, means for action on
remainder of each set in similar relationship in
the other bed, so as to be capable of knitting two
interlocked ribbed webs, and each of desired
needles in at least one of the sets being of loop
transferring form in which connection it includes
a loop engaging catch and a loop expanding
these butts to effect a selection of said jacks, a
cam which'is adapted to raise certain of the
Jacks and to miss others as determined by the
selection, and a transfer cam in each of the
aforesaid tracks for raising selected plain needles
to such a height as to enable loops thereon to
be entered and received by directly opposite rib
needles, all for the purposes herein described.
movement of such needle a loop can be engaged,
expanded and retained so as to enable it to be 65
'7. In a knitting machine, in combination, a
entered by an appropriate receiving needle, yarn
plain needle bed, an associated rib needle bed,
feeding means for introducing yarns independ
needles of the latch type for operation in said
ently to the respective sets of needles, correspond
beds, the plain and rib latch needles being ar
ing sets of cam systems for causing the respective
ranged in two independently operable sets with
sets of needles to knit, loop transferring mecha 70 one half of each set of needles in alternating
nism including means for imparting the aforesaid
relationship in one bed and the remainder of
endwise movement to the transfer needles, for
each set in similar relationship in the other bed,
the purpose herein speci?ed, and means for selec
so as to be capable of knitting two interlocked
tively operating the transfer needles.
ribbed webs, and each of desired needles in at
5. In a circular knitting machine, in combina 75 least one of the sets being of loop transferring
formation whereby upon appropriate endwise
4
form in which connection it includes a loop en
gaging catch and a loop expanding formation
whereby upon appropriate endwise movement of
such needle a loop can be engaged, expanded and
retained so as to enable it to be entered by an
appropriate receiving needle, yarn feeding means
for introducing yarns independently to the re
been transferred, and cam means for operating
such needles in conjunction with said latch open
mg means,
9. In a knitting machine, in combination, a
plain needle bed, an associated rib needle bed,
needles for operation in said beds, the plain and
rib needles being arranged ‘in two independently
operable sets with one half of each set of needles
spective sets of needles, corresponding sets of
in alternating relationship in one bed and the
cam systems for causing the respective sets of
needles to knit, loop transferring mechanism in 10 remainder of each set in similar relationship in
the other bed, so as to be capable of knitting two
cluding means for imparting the aforesaid end
interlocked ribbed webs, yarn feeding means for
wise movement to the transfer needles, means
introducing yarns independently to the respec
for opening the latches of those needles from
tive sets of needles, corresponding sets of cm
which loops have been transferred, and cam
means for operating such needles in conjunction ll systems for causing the respective sets of needles
to knit, loop transferring means for producing
with said latch opening means.
transferred loop effects in at least one of the
» 8. In a circular knitting machine, in combi
aforesaid webs, and wrap mechanism for pre
nation, a cylinder, plain needles in said cylinder,
senting embroidery thread to and causing same
a dial, rib needles in said dial, the said plain and
rib needles being arranged in two independently 20 to be knitted by desired needles.
10. In a knitting machine, in combination, a
operable sets wherein the needles of one set
plain needle bed, an associated rib needle bed,
alternate with the needles of the other set in
needles for operation in said beds, the plain and
both the cylinder and the dial so that the rib
rib needles being arranged in two independently
needles are located directly in line with the plain
operable sets with one half of each set of needles
needles, and each of desired needles in at least
in alternating relationship in one bed and the
one of the sets being of loop transferring form
remainder of each set in similar relationship in
in which connection it includes a loop engaging
the other bed, so as to be capable of knitting
catch and 2' loop expanding formation whereby
two interlocked ribbed webs, yarn feeding means
upon appropriate endwise movement of such
for introducing yarns independently to the re
needle a loop can be engaged, expanded and re
spective sets of needles, corresponding sets of
tained so as to enable it to be entered by an
cam systems for causing the respective sets of
appropriate receiving needle, yarn feeding means
needles to knit, and combined wrap and loop
at at least two locations for supplying yarns in
transferring mechanisms arranged to present
dependently to the respective sets of needles,
embroidery thread and transferred loops to de
different sets of cams for operating the said
sired and the same needles. for the purposes
sets of needles and causing them to knit, means
for operating desired transfer needles suchwise
that knitted loops thereon are transferred to
directly opposite needles, means for opening the
latches of those needles from which loops have 40
herein speci?ed.
EDWIN WILDT.
HENRY HAROLD HOLMES.
- ALBERT HENRY Wl'DDOWBON.
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