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Патент USA US2125197

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Ju?y 26, 2938.
A. PASS
‘2,125,197
KNITTING MACHINE AND METHOD OF OPERATING SAME
Filed April 20, 1937
10 Sheets-Sheet l
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INVENTOR
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ARTHUR PASS
BY HIS ATTORNEYS_
July 26, 1938.
A. PAss
2,125,197
KNITTING MACHINE AND METHOD OF OPERATING SAME
Filed April 20, 1937
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BY HIS ATTORNEYS
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July 26, 1938.
A. PASS
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INVENTOR
ARTHUR PASS
BY HIS ATTORNEYS
July 26,1938. '
2,125,197
A. PASS
KNITTING MACHINE AND METHOD OF OPERATING SAME
Filed April 20, 1957
10 Sheets-Sheet 9
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INVENTOR
ARTHUR PASS
BY HIS ATTORNEYS
July 26, 1938.
A. PASS
2,125,197
KNITTING MACHINE AND METHOD OF OPERATING SAME
' Filed April 20,_ 1937
10 Sheets-Sheet l0
INVENTOR
ARTHUR PASS
BY HIS ATTORNEYS
Patented July 26, 1938
2,125,197
4 UNITED- STATES
PATENT OFFICE -
' 2,125,191
AND METHOD OF OP
ERATING SAME
, KNITTING MACHINE
Arthur Pass; Glen Iris, Victoria, Australia, assign
or to Scott‘ & Williams, Incorporated, New York,
N. Y., a corporation of Massachuset's
Application April 20, 1937, Serial No. 138,030
In Australia April 21, 1936
16 Claims. ' (CI. 66-51)
on each change in width, thus producing a; fab
which are adapted to produce, inter alia, “?at” ric in which the wales converge into the selvage
fabric which is fashioned to any desired forma
_and a panel as aforesaid is not produced. On
tion. More particularly, the invention concerns .the other hand, the straight or ?at type of knit
5 the circular type of knitting machine which in
ting machine which is adapted to produce ordi
cludes a needle cylinder, one or more banks of
nary full fashioned hosiery as aforesaid normally
needles and relatively movable cams associated operates at a relatively slow speed so that these
with said needles, said machine being adapted machines are not only expensive as regards their
to produce hosiery blanks or other articles hav
initial cost but have a relatively low output which
10 ing areas fashioned in accordance with require
,seriously affects the cost of the ?nished product. 10
ments.
In addition, it is well known that the latter type
In known types of “straight” or “flat” knitting of machine is of such a nature that it is usually
machines which are capable of producing full necessary to maintain a constant temperature
fashioned hosiery in the “?at”, the machine is and humidity in the room in which the machine '
adapted to form a panel which is located adja
is operating and, in having to work in such a
cent to the central seam at the back of the stock~ temperature, the general health of the operatives '
ing, said seam being formed after the knitting is frequently impaired. Circular machines are
operations have been completed. In this in
not subject to these handicaps.
stance, the fashioning operation is effected by
It has also been known to‘ knit two blanks
' This invention relates to knitting machines
automatically decreasing at the selvage edge or
edges the'number of needles .employed, and ‘also
doublingv by means of stitch transfer mechanism
one or more stitches at a relatively short .dis
tance from the selvage edge at that section of
the hose which is being fashioned.
Hitherto, circular knitting machines of a known
type'have been adapted to produce a certain
type of full fashioned hosiery, and, for this pur
pose, a, portion of the knitting mechanism of
the machine, such as the needle cams, was adapt
, ed to oscillate whilst the whole of the hose was
in a rotary manner 'while reciprocating a sep- '
arate yarn guide for'each blank, but these have
not been satisfactory and no way has hereto
fore been known to fashion the blanks to dupli
cate the ordinary full fashioned stocking blank.
The primary object of the present invention is /
to provide an improved circular knitting ma
chine of the type referred to which is adapted
to produce fashioned fabric such as full fash
ioned hosiery having a. panel as aforesaid, the
entire fabric being knit whilst the knitting ele
ments of the machine are being operated in a
being knitted‘ with the exception of that section
rotary direction, thus eliminating the undesir
or sections knitted on the full number of needles,
in which case the machine was adapted to per
able oscillating movement of the camming ele
ments and considerably increasing the effective
speed of the machine. The improved circular
machine isradapted to produce ‘full fashioned
hosiery which is substantially identical with'ho
siery produced by the aforesaid ?at or straight
form a‘ full rotary knitting operation giving a
tubular fabric. The section of the hosiery to
be fashioned was formed by causing the needle
cams, for instance, to oscillate temporarily,
whereby this particular section of the hosiery
was knitted in the "fiat”, the number of needles
employed being increased until, the maximum
diameter of the hosiery had been reached, where
upon the rotary knitting operationswere re
sumed to complete the hosiery. "
type of machine, the improved machine being
adapted to transfer stitches during the'forma 40
tion of the panel and other fashioned areas of
the stocking and to decrease the number of nee
dles employed at these .zones in a manner simi
, lar to the functioning of the ?at machine. _
The aforesaid type of circular knitting ma
The initial cost of the improved circular ma 45
chine has not proved to be satisfactory in prac
chine is conslderably less than the cost of the
tice for fashioning purposes, in that the osciL
?at or straight type of machine, as. aforesaid,
lating movements of a portion of the knitting whilst in addition the improved machine is of
mechanism retard the speed bf the machine and simpler construction and is adapted to operate
thus decrease its output. Furthermore, it is not at a much greater knitting speed than the afore
possible on such a machine to produce ordi
said known types of circular or ?at machines,
nary full fashioned hosiery, namely, hosiery in ' thus considerably increasing the rate and conse
cluding a panel as aforesaid, for the reason that quently lowering the cost of production.
this circular type 0'1’ knitting machine functions
to add one or more needles at the selvage edge
. Various other objects and features of the in
vention will be more readily apparent from the 55
2,126,197
2
‘ following description which refers,
way of
drawa-l of the sinkers during transfer; and Fig.
independent latch needles and the needle cyl
‘24 a cam to shog a comb cireumferentially;
Fig. 25 is a. view in ‘vertical section through the
means for shogging the combs, taken on the line
that the invention is not confined to this type
of machine. The invention is applicable to latch
needles or bearded needles, independent or united.
Figs. 26 to 35 are diagrammatic illustrations of
the manipulations of the jaws, needles and combs
at various stages in. the narrowing process to pro
example, to one practical embodiment of the
invention.
In this embodiment the needles are
inder is stationary but it should be understood . 25-25 of
In the drawings... /\
duce the panel;
_
Fig. 1 is a front view in elevation of the head
and bedplate of a circular machine constructed in
accordance with my invention, some, of the parts
10
being omitted for clarity;
Fig. 2 is a plan view of the head of the ma
15 chine takenljust below the means for tipping
the combs, showing the mechanism for shogging
'thecombs and moving them vertically, and the
mechanism for retiring the sinkers prior to trans
fer;
-
2;
.~
',
.
Fig. 26 shows in solid lines the retracted or idle
position of a jaw unit IDOL, and in dotted lines,
the position of the jaw unit in engagement with
the needle jacks preparatory to beginning trans
fer of loops;
.
Fig. 27 is a view similar to Fig. 26 showing the
needles raised to a. clearing level and the points _
lowered suiiiciently to engage the needle hooks;
Fig. 28 is a face view of a needle, needle loop‘
and point showing their relation when in the posi
20
I
.
Fig. 3 is a plan view of the machine taken just tion of Fig. 27;
Fig. 29 is a view similar to Figs. 26 and 2'!
above the upper bedplate on line 3-=3 of Fig. 4,
showing the upperv cam block, the narrowing » showing the needles down momentarily out of
action with the stitches on the points 'and the
jaws and the fashioning cams;
_
Fig. 4 is a view in elevation from the rear of latter swung ‘radially out of the path of the
25 the machine, showing the racks and pawls for.
vshogging the jaws and combs;
5 is a condensed view in sectional elevation
through the top'of the needle cylinder, showing
the yarn carriers and. sinkers and their control
30 and driving means, taken on the line: 5-5 of
Fig. 6;
Fig. 6 is a condensed plan view corresponding
to Fig. 5, showing the yarn carriers and associated
arts;
.
35 D Fig; 7 is a vertical section through a cam block;
Fig. 8 is a view in elevation of the outer end
of a cam block;
"
Fig. 9 is a view in elevation of the saddle con
needles;
I
Fig. 30 is a view showing the upper part of Fig.
29 with the points raised a little from their posi- _
tion of Fig. 29 to clear the sinkers and the points
about ready to be shogged; “
'
Fig. 31 is a plan- viewer the upper and lower 30
jaws of a jaw unit lllllL_ after being shogged to
the right two needles while still in the down posi
tion of Fig. 29;
‘
Fig. 32 is a detail view in elevation of the rela
tion of the jack butts to the jaws and lug on the. 35
upper jaw while in the position of Fig. 31;
Fig. 33'is a view similar to Figs. 26, 27 and 29,,
showing the new selection of needles raised to an
intermediate level preparatory to receiving the
transfer loops, the dotted position showing the
the mounting of a comb, taken on the lines ill-I0 ' points when swung back against the needles to
return the loops to the needles;
of Fig. 12 and iii-l0 of Fig. 11;
_
Fig. 34 is a detail of the upper part of Fig. 33 ‘
Fig. 11 is a view in elevation looking radially
showing the points and needles moved further
inwardat the machine, taken on the line ll-ll
of Fig. 10, showing the comb and ,how it is together vertically than in the position in Fig.
with the loops on the needles;
mounted;
'
i l ![ i 33Fig.
35 is a detail in radial elevation similar t(
Fig. 12 is a plan view from the top of the ma
Fig. 28, of a needle and point, showing the post
A chine showing the bracket joining'the upper ends
trolling vertical movement of a jaw unit;
Fig. 10 is a vertical view, partly in section, of
of the bedplate posts and some of the mechanism ‘ tion of the loop as the needle and point start ti
50 for moving the narrowing points radially; -
Fig. 13 is a view in eievation from the right
side of the machine, and Fig. 15 a plan view, of
the unitary can-1 means controlling the rotary
knitting ‘clutch and the reciprocatory yarn ?nger
55
60
rings.
'
The improved knitting machine has a. main
clutch;
bedplate 25 supported upon amain frame 25. 55
mairrcountershaft, taken on the‘ line I6—l6 of
Fig. 15, showing the driving connections from
transmission mechanism. The driven gear 32 is
‘ Mounted upon this bedplate is a main drive shaft
Fig. 14 is a detail view in side elevation of the > 21 adapted to be driven from any convenient
means driving the heart-shaped cam;
source of power by pulleys 28, 29. To drive the
Fig. 16 is a vertical view in section through the machine this main shaft 21 can be connected to
the countershaft;
’
Fig. 17 is a view in elevation from the right
65
separate; while
50
Fig. 36 is adiagrammatic view in elevation of
the gears driving the cam blocks carrying the
side of the machine, showing ‘now the recipro
catory motion for the yarn carriers is obtained
from the heart-shaped cam;
-
Figs. 18 to 24 are side elevations of the fash
ioning cams and levers on one of the fashioning
a train of gears 3D, 35, 32 or any other suitable
mounted loosely on a counter-shaft 33 and there
is a clutch face 34 on one sidev of the gear.
Adapted to engage this clutch face
a slide 35
also having“ a clutch face, but keyed on the 65
countershaft 33, these two ciutch faces forming
the main clutch unit. When the face and slide
are in engagement the countershaft revolves with
cam shafts; Fig. 18 showing
cam to give the the main shaft. The countershaft extends in
radial or tipping movement to a narrowing comb;
wardly to a point below a stationaryneedle cyl 70
vFig. 19 a cam to give radial movement to a jaw ' inder 36 on the main bedplate. The countershaft
vunit; Fig. 20 a cam to give vertical movement to drives a revolving lower cam block 4| by means of
a jaw unit; Fig. 21 a cam to give vertical move
a main bevel gear 31 ‘meshing into a horizontal
ment- to a comb; Fig. 22 a cam to shog a jaw unit bevel gear 38 resting on the bedplate and a spur
gear ring 39 fastened on the upper face of the
75 circumferentially; Fig. 23 a cam to cause with
2,125,107
3
bevel gear. The cam block 4| is mounted on a
and low levels. These surfaces engage in turn
sectional carrier plate 40L screwed on top of the against a small upstanding lug 51 on the cam
spur gear ring. The block is free to slide radially block radially outside the pin 55:' There are
on the plate. Extending upwardly from the main _ springs 58 tending to pull the cam block radially
bedplate are posts 42. A short distance above the inward. When a low surface on the cam wheel
main bedplate on these'posts is an upper bed
55 is opposite the lug 51,. the block is in position
plate'48 carrying an upper cam block 44. This to engage both long and short butts. When a
cam block is mounted on‘ a carrier plate 40U like
high surface engages the lug the block is partially
the lower one and/can slide radially toward and
10 away‘ from the cylinder.
The plate 4IIU is
withdrawn till the cams are in the path of only
the long butts.
screwed on top of another spur gear ring 39 turn
ing on a block sitting in the upper bedplate.
When the countershaft 33 turns clockwise as
porting posts and adjacent to the top of the
needle cylinder are two yarn carriers 13, ‘I4 each
mounted vupon one of a; pair of concentric rings
‘II, ‘I2 in a circumferential guideway ‘I5 (see Fig. 15
viewed from the right side of the machine (Fig.
13), the lower cam block 4| turns counterclock
wise as viewed from above, but the upper cam
5). Each of these yam carriers performs oscil- '
block 44 turns» clockwise. To drive the upper
block in this manner there is an operative con
nection from the lower spur gear 39 comprising
the following elements. Meshing with the lower
lating movements with relation to one group of
needles, i. e., there is a separate yarn carrier for
each stocking blank. Each yarn carrier has one
or more yarn ?ngers 88 and a support 84 there
for mounted on one of the aforesaid circumfer
spur gear 39 is a gear wheel 45 tight on a vertical
shaft 45 extending upwardly to a point beside the
upper bedplate 43 (Figs. 3 and 36). On the up~
‘,Jper end of the shaft 45 is a wheel 41 meshing
25 with an idler gear wheel 48 which in turn drives
the upper spur gear ring 39 in a direction oppo
site to the lower spur gear ring.
v
The needle ‘cylinder 38 has the usual open
radial slots 49 running longitudinally on its pe
30 riphery and in these slots are located the usual
needles 50. These needles may have extensions
or tails which carry the necessary operating
butts, but preferably the operating butts are on
attached jacks 5|, as shown in Figs. 26 and 27.
O3 Cil The upper end of each jack may be provided with
a hook or. pocket adapted to accommodate a com
plementary projection upon the lower end of its
needle whereupon the jacks may be employed
for imparting both an upward as well as a down
40 ward movement to the needles. In the drawings
there is an upper operating butt 52 and a lower
operating butt 53-0ne for each cam block. In
any case each needle customarily has a plurality
of operating butts associated with it. There is
45 a group of needles in the cylinder for each stock
ing blank to be knit and there is a gap or space
between the ' ends of the groups.
In the ex
ample shown in the drawings there are two groups
of needles.
The knitting cam blocks 4|, 44 are of identical
50
construction but arranged in a reverse manner so
as to engage their associated needle butts whilst
moving in opposite directions. Each cam block
may include the cams necessary to'produce a
55 knitting wave and arranged so as to form an
open-endedv cam groove therebetween which is
adapted to accommodate the butts of the needles
or needle jacks. In addition, each cam block
may include means for effecting radial move
60 ment of its cams in relation to the needle cylin
der, whereby the aforesaid cam groove may be
adapted to operate needle butts of different
lengths selectively. This manipulation is used
in the manufacture of heel tabs, as will be de
65 scribed later. The movement can be controlled
10
I Located above the cam blocks upon the sup
20
ential rings. .
'
In the embodiment shown, in the‘ drawings the
oscillating movement of the yarn carrier is ob
tained from the countershaft 33 by means of a
heart-shaped cam 58.
On the countershaft 38 ‘
is a small pinion 58 meshing with a larger gear
GI which in turn engages a small pinion 62 re
volving one to one with the countershaft 33 and
cam blocks H, 44 (see Fig. 14). This second
pinion 82 turns a shaft ‘63 carrying the heart
shaped cam 59. This heart-shaped cam is a
30'
double path cam and moves a roller 64 on one
arm of a bell crank lever 55 (see Fig. 17). The
end of the other arm of the lever is a gear seg 35
ment or quadrant 86 meshing with a pinion 6'I
turning freely on the countershaft 33. Attached
to oneside of this free pinion is a bevel gear
wheelr58 which also meshes with a bevel pinion
59 on the lower end of a vertical drive shaft ‘I9 40
(see Fig. 16).
This
shaft extends
upwardly -
through the main bedplate 25 to the level of the
rings ‘II, ‘I2 which carry the yarn carriers 13, ‘I4.
On the upper end of this vertical yarn ?nger
drive shaft 18 is a horizontal gear ‘I6 which act
ing through an opening in the circumference
of the guideway ‘I5, meshes with teeth ‘I1 on the
periphery of the outer yarn carrier ring ‘II (see
Fig. 5)._ Just below this gear ‘I5 on the shaft ‘I8
is a bevel gear 18 meshing with a bevel pinion
wheel ‘I9 on a short shaft 89 extending under the
outer ring ‘II, through bevel gear 8I onto'teeth
82 on the inner ring ‘I2 and driving same in a
direction reverse to that of the outer ring. Each
carrier oscillates over the full width of its group
of needles in a direction opposite to that of the
other carrier.
.
On the top of the needle cylinder 38 is any
usual form of outside sinker ring I44, the sinkers
85 moving radially in slots in the outside ring ,~
and the inside sinker ring 85. To actuate the,
sinkers of each bank of needles there is a mov
able carn plate 81 guided by a sinker cap I42 and
driven by a pin 88 upstanding from the cam plate
through a'slot in the cap. Thispin is actuated
by its yarn carrier. In view of the fact that the
sinker cams must lag behind the yarn ?nger
from the main pattern drum of the machine (not
shown) by any convenient system of cams and
levers which can place 9. lug I99 or striker for’ ?rst on one side and then, on the return move
star wheel 54 in the path of the rear end of the ment of the carrier, on the other, the driving
cam block. ' This lug or striker when pushed pin 88 takes into a slot in the yarn carrier ‘I3
radially inward will operate a star wheel 54 on or ‘I4 so that the cam changes position automati
_ the carrier plate 48 opposite the cam block (see cally when the carrier starts in a new direction.
Figs. 7 and 8). On a pin 55 projecting upwardly
It will be observed that with this machine the
through the cam block and carrying the star fabrics produced have selvage edges down each
wheel 54 is a cam wheel 85 with alternate high side of the blank. If necessary any of the usual
2,125,197
precautions to avoid tight stitches at the selvage
can be taken,‘ such for instance as laying the
yarn around the last needle but not knitting
thereon by means of picker manipulation.
In making heel tabs, it is necessary to make
one heel tab on one end of a bank of needles _
with one yarn and the other heel tab on the
other end of the bank of needles with another
yarn. For this purpose there are two yarn ?ngers
83 in each carrier, 1. e., for each bank, and during
the making of heel tabs these ?ngers are moved
into and out of feeding position in alternation.
As shown in vFigs. 5 and 6, the ?ngers swing
upwardly and inwardly when going out of action.
the other end of this horizontal shaft is a small
gear wheel I06 meshing with a larger gear wheel
I01 turning freely on the adjacent fashion cam
shaft 96. The free member of the fashion cam
shaft clutch 91 is ?xed to this large gear wheel
I01 while the other clutch member is slidably
keyed on the shaft.
In order to operate this clutch in proper timed
relation to the main or knitting clutch, the two
are linked together as follows.
The necessary
longitudinal movement of the keyed member of
the fashion clutch is obtained from a horizontal
lever I08 pivoted on‘the housing of the shaft
carrying the gears I05 and N16. The other end
vTo raise a ?nger pressure is applied just‘below
of the lever E08 is linked to one arm I09 of a
the pivot point by a slide 89 horizontally mounted
three-arm bell crank lever pivoted. at the juncture
in the carrier, there being two slides in each
carrier, one for each ?nger. These slides are
actuated in alternation by a pair of rotating cam
wheels 90 mounted on a vertical pin 9| extending
downward through the carrier. On the lower end
of this pin is a two-stud trip lever 92. A station
ary lug 93 on the guideway at each side of the
machine protrudes into the path of the stud or
arms of each ‘lever 92. When a carrier oscillates
in one direction its lug 93' turns its lever 92 in
one direction, and on a swing of the carrier in the
other direction the lug hits the other arm of the
30 lever 92 and turns the pin 9| in the-other direc
tion.
These oscillatory movements of the pin
.move the cam wheels enough to actuate the slides
and ?ngers in alternation.
The lug is so located
that the changes occur while the ?ngers are mid
way between the heel tabs. The lug can be moved
into and out of operative position by lever con
nections 94, 95 from the main pattern drum.
An inoperative position can be obtained by a mere
raising of the lug above the level-of the trip
40 lever 92.
y.
In combination with the foregoing, the im
proved machine includes means for fashioning
the hosiery or other fabric being produced, said
fashioning means being adapted to reduce the
effective number of needles employed at the
selvage edges of the fabric and a panel similar
to the panel present in the fabric produced upon
a ?at or straight type of full fashioned machine
is formed in the hose or the like, as hereinafter
described. Said fashioning means include stitch
transferring mechanism incorporating a second
clutch device.
-
.
Mounted upon the bedplate adjacent to each
side of the needle cylinder is a fashion cam shaft
of the arms. Actually, in the embodiment shown
in the drawings, the lever I09 is above the other
two arms and is mounted on the upper end of a
vertical shaft Hi. This shaft is carried by the
main frame 26. A second arm ill] of the bell
crank is lower down on the shaft and. has a jaw
taking into the sliding or keyed member of the
main or knitting clutch, while the third arm H2
actuates the other two arms. ,The end of this
operating arm carries a roller lying in a cam path
i l3 of a shipper drum I M which is racked around
by a rack wheel I I5 controlled from the main pat
tern chain (not shown). The parts are so ad-‘
justed that one clutch is always in engagement,
the two clutches Working in alternation.
Means are provided for preselecting a section
of each bank of needles employed in forming the
fabrics and manipulating such plurality of nee 35
dles in unison to transfer the needle loops 200
to other needles for the purpose of fashioning the
fabric and producing the panelv as aforesaid. A
section at each end of each bank is thus treated.
Thus the machine in the drawings has four jaw 46
units (see Fig. 3). Said needle selecting mech
anism may include one or more jaw units lllllR,
IOOL, each comprising a pair of pivoted jaws I IS,
H8 or I H, I I8 adapted to be operated by linkage
engaging one or more cams on the fashion cam
shafts 96.
Each of the aforesaid jaw units is universally } '
mounted on the upper bedplate 43, the upper
jaw H6, H1 in each case being preferably in
iluenced by a spring H9 and capable of lateral
movement in relation to its lower jaw H8. The
upper jaws H6 in the units “30R can move lat
erally clockwise, while the upper jaws H1 in the
units IOOL can move laterally counterclockwise.
The upper jaws are also provided with an elon 55
96 which is operable from the main driving shaft
gated upstanding extension or lug H20 adapted
and adapted to cooperate, for instance, with a plu
rality of cams, links and levers to actuate the to bear against the side’ of one of the needle
improved fashioning mechanism hereinafter de ' butts when the jaw is depressed (Fig. 29) so that,
during ‘bodily movement of the jaw unit in a
scribed. The second clutch device may be mount
direction
circumferentially of the needle cyl 60
ed
on
this
fashion
cam
shaft.
This
clutch
9'!
60
drives the fashion cam shaft. The two shafts 96 inder, the extension or lug engages the next ad
> are connected by two ‘pairs of bevel gears 98 and jacent needle-butt of the remaining needles or
a cross shaft 99 at the back of the machine jacks in the bank, and thus retards further
movement of the upper jaw whilst the lower jaw
(Fig. 4').
,
.
The driving connection between the counter
continues to move beyond the end of the upper 65
shaft 33 and the first fashion cam shaft 96 is jaw (Figs. 31‘and 32). By virtue of this pushing
shown in Figs. 13, 15 and 16 and comprises a aside of the upper jaw a portion of the lower jaw ‘
bevel gear iii! on the side of the‘ driven gear 32 is thus automatically positioned beneath one or
on the countershaft which meshes with a bevel more predetermined needles of the remaining
pinion I02. This latter pinion is on the lower end needles in the bank. Whilst the associated upper 70
of a vertical shaft ")3 supported on the main and lower jaws occupy these particular relative
bedplate 25. On the upper end of this shaft is positions, an upward movement is imparted to
another bevel pinion Hi4 meshing with a bevel the jaw unit whereupon the aforesaid predeter
mined needles are engaged by the end of the
gear IBE-mounted on one end of a short hori
zontal shaft also carried by the bedplate. On lower jaw and a corresponding number of needles 75
75
5
2,125,197
VI
released at the opposite end of the jaw unit,
namely, at the selvage edge. pontinued upward
towards the center of its bank of needles. This
movement of the jaw unit causes the upper jaw
movement may be over one or more needles.’
to clear the adjacent needle butts, whereupon the
In the drawings I have shown it equal to two
spring its functions to return the upper jaw to
needles.
its original position automatically. _ The jaw unit
now has hold of a new selection of needle jacks-a
diametrically opposite on the other bank of
needles is' also connected to the upper ring. The
ring movement described therefore also moves
that jaw unit toward the center of its own needle
bank. The other two jaw units are similarly 10
mounted on the lower ring: this ring receiving
its circumferential movement in a like manner
but in a clockwise direction. At the completion
of the blanks, these units can be returned to their
it has been shogged.
_
In order‘ to perform all their functions, each
10 jaw unit must swing counterclockwise and clock
wise and. up and down and also be able to move
radially toward and from the needle cylinder.
The mounting comprises a block iii on the up
per bedplate carrying a dovetail-‘shaped hori
zontal slot in which a slide 822 is adapted to move
In a two-blank machine the jaw unit
original position by any suitable similar racking
mechanism.
Cooperating with the needle selecting mech
circumferentially. This allows the counterclock
wise and clockwise movements of the jaw unit.
0n the upper edge of the slide is a hollow. block
i233 through which the arm 11261 of the jaw unit
20 slides. The sides of the hollow block are slotted
at 625 and those holes carry a pin E25 which goes
' through the arm.
counterclockwise, carrying the jaw unit with it.
anism is a series of transfer points which may
be of known type and of substantially inverted
U shape in horizontal cross-section, said trans 20
fer points being mounted upon the supporting ,
These slots are spaced from
frame and adapted to be moved towards and
away from the needles by any suitable means,
such as a system of links and levers operatively
the bottom of the hollow portion and the arm
can be swung up and down. Because of the
25 slots m5 the arm can be moved toward and
connected to the cams on the fashion cam shaft.
away from the cylinder-to get it into and out of
The U-shaped transfer point above referred to
operative position.
is more particularly suited for a bearded needle
machine. For a latch needle machine I prefer
to use a split point composed of two spring blades
All the movements of the'jaw- units are ob=
tained from the fashion cam shafts 95. I will
30 describe the operative connections for the unit
at the right front of the machine. Mounted on
the fashion cam shaft is a double track cam
wheel 921 with a cam lever ltd pivoted on a rock
shaft Q29 and carrying a roller resting on the
cam wheel. The free end of the cam'lever is
connected by a link let to a bell crank Iii piv=
oted on the guideway “F5. The free end of the
bell crank surrounds a lateral extension of the
for each point, the hook of the needle passing 30
between the two blades.
_
In order to perform all its necessary functions,
the transfer comb M5 or points must be able
to move up and down, circumferentially and
radially to and from the needles. In the draw
ings the controls are shown in Figs. 10, ll, 12, 25,
l and 2. The combs are mounted above the
‘needle cylinder on two pairs of comb-carrying
pin lift of the jaw unit but allows circumfer
arms M5, it‘l which are carried on a stationary
40 ential movement of the pin with the jaw unit.
spindle Md. This in turn is supported by a brack
Rotation of the fashion cam shaft causes the
et its on the upper ends of the posts 62.
rocking of the bell crank and therefore radial
movement of the pin and jaw unit. The up and
down movement of the jaw unit is obtained from
narrowing points I 50 hang vertically above the
ings. the two diametrically opposed combs are
a double track cam wheel I 32 on the fashion cam
mounted on an. upper pair of arms M6 and the
shaft. ‘This wheel has a cam lever i33 pivoted
on therock shaft 029 with the usual roller. The
free end of thisv cam lever is connected to the
lower end of a vertical slide 636 carried in a slide
block i335 on the main bedplate. The upper end
of this slide is shaped to form a horizontal sad
dle ltd which surrounds the outer end of the
other two on a lower pair of arms M1. These
are revoluble on the spindle ltd. The points
are conveniently carried in a slotted block i5l,
each pair of blades being the same distance apart
needles. In a similar manner tothe jaw mount
as the needles. The block is mounted on a hori
the end of each arm, which is formed as a vertical
guide, said slide being carried on the ring. The
front right comb is on one of the upper arms
tilt. , There is a jaw unit for each comb.
55
tion of the cam shaft causes the slide I34 to
move up and down carrying the jaw arm with
The movements of the comb are all obtained
from the fashion cam shaft. Mounted on this
it, upward movement of the slide lowering the
'
' shaft is a cam wheel I50.
The circumferential movement of the jaws is
60 obtained as follows.
Mounted on the under side
of the upper bedplate 033 are two large disks I13,
are, one below the other (Figs.»_l and 4). A
\ bracket M3 is attached to the upper disk I13
and it extends upwards and outwards around the
0n
the periphery of this upper disk at the back of
the machine is a toothed segment I31. Acting
upon this toothed. segment is a racking pawl I38 _
65 bedplate and is connected to the slide I22.
attached pivotally to a cam lever H39 vertically
70 mounted on the main bedplate. This cam lever
carries a rollerv bearing against a cam wheel Illl
on the fashion cam shaft. The cam lever is held
against the cam wheel by a tension spring Ill.
Rotation of the fashion cam shaft causes the
75 racking pawl to rack the upper ring one tooth
50
zontal pivot 952 resting in a vertical slide B53 in
jaw. arm 826. This saddle allows for the cir-J
cumferential movement of the jaw unit. Rota
operative end of the jaw unit.
The
A 'cam lever I55 for
same is located on the rock shaft H29 and its
free end is connected by a link I56 to a horizontal 60
arm I51 pivoted on a bracket on one of the
posts 42. The cam lever is held in contact with
its cam wheel by a tension spring 953. The inner
end of the horizontal arm I51 carries a cross
member I58 which bears on a stud I59 on the
upper side of a horizontal saddle 962. Also car
ried on this arm I51 is a pivoted member I80
held up by spring IBI on the arm I51. This piv
oted member reaches into the horizontal saddle
I 62. The horizontal arm and the pivoted mem 70
ber grip the saddle I62 between them and con
trol the vertical movement of the slide I53 and
comb I45. Rotation of the fashion cam shaft
through its linkage I55, I56. I51 causes vertical
movements of the saddle I62 and its points I50.
6
, 2,125,197
The radial movement of the. comb comes from
a cam wheel 564 on the shaft 96 and cam lever
I65. The free end of the cam lever I65 is con
nected by a link I66 to an arm I61 pivoted on a
bracket I68 on the horizontal bar I96 carried
by the posts 42. On the upper end of the spindle
is a four-arm bracket carrying guidesii?. Each
guide contains a vertical slide I69 attached at its
upper end to the pivoted‘ arm I61. The lower
end of this slide carries a cross member I10 rest
ing against which isia thrust bar I'll vertically
mounted on the upper end‘of the transfer point
block I5I. This thrust bar is held in contact
with the cross member by a spring (not shown).
15 The1 thrust bars being mounted on the blecks
I5I are shogged with their combs and therefore
move circumferentially with relationito the cross
members I10. (The direction of movement of
the combs ‘when narrowingi’is indicated by the
20 arrows in Fig. 2.) Owing to the contour of the
thrust barpany vertical movement of the point
dle heads are transferred onto the points conse
quent upon the needle heads and points while
still in engagement with each other, being drawn
through the stitch loops (see Fig. 29).
The points have now reached theiimit of their
downward movement and are subsequently raised
to a position immediately below the heads of the
remaining needles in the bank, the stitches being
retained upon the transfer points during this
movement?
"
16
i
The needles continue their downward move
ment until they have reached the limit of their
descent, namely, an idle or non-knitting position‘v
(Fig. 29).
’
At this juncture, the needle selecting mecha 15
nism, namely, the jaw units, have a movement
circumferentially of the neede cylinder imparted
thereto, whilst in addition relative endwise move
ment occurs between ,the upper and lower jaws
of each unit, thereby disengaging the jaws from
e)
one or more needles at the end of the bank, name
block I5I er the slide I69 alone will cause the
point block to be rocked on the pivot I52. This
131, at the selvage edge, and positioning? upon
ing motion imparted by relative movement be
transfer points carrying the stitches, whereby
they are positioned above the needle under which
the lower jaw is already located.
the projecting portion of the lower jaw, a cor
- rocking motion imparts the radial movement _ responding number of adjacent fheedles in the
bank (Figs. 31, 32); The selvage edge needles dis 25
25 of the points to and from’ the needles. If the
comb and cross member move vertically in uni ’ engaged from the jaws are in non-knitting posi
son, no radial movement is impartedito the points. tion (Fig. 29). Whilst this movement of the jaws
is taking place, the transfer points receive-a
‘The rotation of the fashion cam shaft 96 causes
the rock lever I65 through its link I 66- to turn the lateral movement su?icient to position them clear if
30 inner end'of the lpivoted arm I61 downwardly of the needle heads (Fig. 30).
A circumferential movement similar "to that ‘1'
and also the vertical slide I69 and its cross mem
ber I10 (see Fig. 10). In the absence of a rock {given to; the jaw units is now imparted to the
tween the slide I69 and the thrust bar I1 I , a ten
35 sion spring 205 between the horizontal arm I51
Mounted on each of the comb-carrying farms
The jaws are now adapted to raise the new
'_ series of preseleiefited needles to a position prepara
tory to having the stitches returned to them‘ from
I46, I41 is an arm I15 which contacts with a
the transfer points. When in this position the
I11 ‘(Figs. 4 and 25). On each slide is mounted
a toothed segment I18 which .is acted upon by
receive a return lateral movement for the purpose
and the slotted block I5I keeps the'ipoints in ver
tical position.
i
'
7
if
needle heads are located immediately under the 40
40 slide
are mounted
I16 rat the
in réfar
a horizontally
of the machine._
dove-tailed
Both slides
block ' stitches held by the points (Fig. 33). The latter
opposed racking pawls I19. The racking pawls
are connected to the free ends offcam levers I82
vertically mounted on the bedplate. This cam
lever is operated by a cam I83 on the fashion
cam shaft 96. ‘The circumferential travel of
of effecting a reengagement between the points
and the needle heads. Thai-transfer points
descend for a relatively short distance and the
needles ascend for a similar distance, thereby
transferring the stitches back to the needles. A
slightl lateral movement is then imparted to the
transfer points for the purpose of 'moving them
the blocks I 16 and toothed segments I18 is lim
ited by stops 206, 201 on the circumference of, towards the centre of the needle cylinder, thus 50
the upper guideway 15. The lever I82 carriesi exposing the needle heads so that further up
a roller and a tension spring I84 as in the case' ward movement of the points effects the release
of the levers I55 and I65, and rotatiorj of the of the stitches from the points onto the needles
cam shaft 96 causes the cam lever I82 to move
the sliding block through its racking pawl I19.
The sliding block carries the arm I15 circum
ferentially and" so shogs the points. For the
purpose of accurately locating the points above
the needles, there. is a micrometer adjusting
screw 202 mol?ited on the end of thearm' I15
which contacts the upper block I16 (Figs. 2 and
(Figs. 34, 35). The transfer points are then re
turned to their original position.
Each of the jaw units is now retracted clear of
its associated gneedle butts, the fashion cam shaft
declutched and the main clutch engaged, where
uponithe normal knitting operations are resumed.
In’ order that loops may be removed from
60
needles or returned during narrowinggit is neces
4). A tension spring 203 keeps thesmicrometer
sary to withdraw the nibs of tile sinkers 85.. This
knitting level.
the cams the
carrying
retract
camsthe appropriate sinkers. When
the fashioning is over, the ring is moved back 75
screw and block in contact. Therelis Ea similar . also can be accomplished froin the fashion cam
shaft. One means of carrying this out would be
device for the lower arm I151
Rotation of the fashion cam’ shafts results in ' to have depending biitts I86 on the outer ends of
.65
sinkers in the fashioning area. In the drawings
each ‘jaw unit selecting a predetermined num
a ring I81 is placed underneath the sinkers to
ber of needlespin the bank and raising their’: to
which ring are attached cams I88 adapted tcjre-'
wards the transfer points which are simultane
ously caused to descend into engagement with the tract sinkers having depending tails (Figf 5).
70 needle heads (:Figs. 2'7 and 28). Following upon When not fashioning, these cams lie the spaces 70
the center
such engagement, the transfer points and needles between the banks of needles and
are caused to; descend bodily until the needle non-fashioning areas. When fashioning, the ring
turned circumferentially till
heads have reached a position below the normal
During suchldownward move
75 ment,'.the loops 200 ncrmally carried by the nee
7
2,125,197
I and the regular sinker operating cams take con
trol of the sinkers again to return them to their
inward position. For this purpose there is another
cam wheel its on the fashion cam shaft, a' verti
cal bent cam lever I90 and tension spring 89!
which is connected to a bell crank lever M2
through a link M3, the bell crank lever being
pivoted on the guideway ‘i5 for the yarn carrier
rings (Figs. 2, 4i and 25) . The free end of the bell
crank lever is connected by a link i94 to the cam
ring it'll. An alternative method would ‘be to
introduce a cam on‘ thesinker cam plate into the
path of the sinker butts at the rear of the sinker
wave, so that as the course prior to a fashioning
operation is being knitted, this cam will sweep
all sinkers outwardly to free the nibs of loops and
leave them well clear of the needles. The con
tinued knitting operation returns ‘the sinkers to
their inward position.
The usual spring takeup mechanism is pro
vided to take up the slack yarn, when the yarn
carriers change their direction of rotation.
During the fashioning operation a predeter
mined number of stitches such as ?fteen, more
or less, have been removed from their respective
needles and moved circumferentially say two
needles, so that the sixteenth and seventeenth
needles, not having had their stitches removed,
have an extra stitch placed thereon when the
30 transfer points return the stitches to the needles.
This doubling of stitches at regular intervals
introduces a distinct series of marks in the fabric,
into which some of the wales outside the said
series of ‘marks converge at an angle, whilst all
35 wales inside said marks remain vertical, thus pro
ducing a panel effect as aforesaid.
act on the butts at di?‘ferent levels to cause the
needles'to knit in succession, in combination with
narrowing ‘mechanism and means adapted to
stop the e?ective operation of the two cams while
the narrowing mechanism is in action.
_
2. A circular knitting machine for knitting one
or more fashioned blanks having selvage edges,
said machine comprising a stationary needle cyl
inder, independent needles therein arranged in
one or more groups, jack means associated with 10
the needles for operating same and provided
with butts at two levels, and two cams rotating
in opposite directions operating on the butts at
different levels, in combination with narrowing
mechanism and means adapted to stop the effec
tive operation of the two cams while the narrow
ing mechanism is in action.
3. A circular machine for knitting one or more
stocking blanks, said machine comprising a sta
tionary needle cylinder, independent needles
20
therein arranged in one or more groups, operat
ing butts at two levels‘ for each of said needles,
a reciprocating yarn carrier for each needle
group and cams rotating in opposite directions
acting on the butts at different levels, each caus
ing all the needles to knit in succession, in com
bination with means adapted to narrow the
blanks by operation of a plurality of points in
unison.
d. A circular knitting machine for knitting ,
one or more stocking blanks having selvage
edges, said machine comprising a stationary
needle cylinder, needles therein arranged in one
or more groups, there being a space between the
ends of the group or groups, and means asso 35
ciated with the needles and providing operating
butts at two levels, in combination with two knit
repeated in accordance with requirements by suit- » ting cam blocks rotating in opposite directions
ably adjusting the aforesaid control mechanism operating on the jack butts at different levels
so that by this arrangement a panel e?ected at and so timed as to pass each other at the space
This method of transferring stitches may be
the back of a stocking for example is produced,
between the ends of the needle group or groups,
which is identical with the panel produced upon
the known type of straight or ?at knitting ma
narrowing mechanism for said needles and
means adapted to stop the knitting operation of
the cam blocks while the machine is transferring
chines, as aforesaid.
-
I
The heel tabs are made as usual between the
knitting of the leg and foot. ‘The operating butts
of the needle jacks corresponding to the instep
needles or of the instep needles are short, whilst
those corresponding to the heel tabs are long.
The cam blocks are withdrawn part way till they
loops for narrowing.
5. A circular machine for knitting one or more
stocking blanks having selvage edges, said ma
chine comprising a stationary needle cylinder,
independent needles therein arranged in one or
more groups whose ends are spaced from each _
operate only the long butt jacks for the heel tab
other, multiple operating butts associated with
needles. As' the yarn ?ngers move from one heel
said needles, and cam blocks each acting suc
cessively on the operating butts at its own level
in the opposite direction to the other, in combi
tab to the other in the above-mentioned recipro
>catory manner, the two yarn ?ngers are alter
nated so that one yarn ?nger feeds .to one tab and
the other ?nger to the other tab. Takeups con
trol the surplus yarn.
knit, the alternation of the yarn ?ngers is stopped
and the cam blocks move into contact with the
60 short butt needle jacks, and the foot is knit. The
toe can be narrowed in the same general manner
as the leg.
nation with narrowing mechanism for the,
needles in each group adapted to cause narrow
After the heel tabs are ‘ ing over one needle on a plurality of needles
,
It will be evident that various alterations, modi
fications and/or additions may be introduced into
~ the aforesaid construction ‘and arrangement of
simultaneously.
-
6. A circular machine for knitting a plurality
of stocking blanks having selvage edges, said ma
chine comprising a stationary needle cylinder,
independent needles therein arranged in a plu;
rality of groups spaced from each other, multiple
operating butts associated with each needle and
two cam blocks rotating in opposite directions 65
parts without departing from the spirit and scape
at different levels each adapted to cause all the
of the invention.
What I claim is:‘
with narrowing mechanism for each group of
needles to knit in,‘ succession, in combination
1. A circular machine for knitting one or more
needles adapted to manipulate a plurality of
fashioned blanks,‘ .said machine comprising a
needles in unison for transferring stitches and
stationary needle cylinder, independent needles
means to halt the effective operation of the cam
therein arranged in one or more groups, operat
blocks during the narrowing operation.
ing butts at two levels for said needles, a recipro
cating yarn carrier for each needle group and
75 cams rotating in opposite directions adapted to
7. A circular machine for knitting a plurality
of full fashioned stocking leg blanks, said ma
chine comprising a stationary needle cylinder,
8
2,125,197
needles to knit in succession, in combination with
independent needles arranged therein in a plu
rality of groups spaced from each other, operat
a plurality of narrowing jaw units each adapted
to manipulate a plurality of needles in unison for
ing butts at two levels for each of said needles,
cams rotating in opposite directions and acting
a narrowing operation, eachiaw unit comprising
on the butts at diiierent levels, each adapted to
a lower jaw and an upper jaw being laterally
pivoted and spring-pressed so that the lower jaw
can move in under a butt before the upper jaw is
above it to enable the jaw to measure and take
’ cause all the needles to knit in’ succession, and
a reciprocatory yarn: carrier for each needle
group, in combination with unitary cam means
adapted to throw the narrowing mechanism and -- a new group of needles automatically at each
narrowing operation.
10 the knitting cams into andout of e?ective opera
tion in repeated alternation.
‘
'
10
13. In a method of manipulating an independ
~
8. A circular machine for knitting a plurality \ent needle stationary cylinder circular knitting
machine to make ?at stocking blanks where the
of stocking blanks including heel tabs, compris
ing a stationary needle cylinder,__ independent needles are arranged in a plurality of spaced
needles therein arranged in a plurality of groups groups each corresponding to one blank, the steps
spaced from each other, operating butts at two of knitting on all the needles in succession by
levels for said needles, a reciprocatingyarn car ‘means of a cam block rotating in one direction
rier for each needle group, and cams rotating in and simultaneously knitting on all the needles
in succession in the other direction by means of
opposite directions acting on the butts at differ
another cam block rotating at another level, the 20
two blocks passingin a_ space between the needle
ent levels, each adaptedgto cause all the needles
to knit in succession, in combination with a plu~
rality of yarn ?ngers in each carrier, means
groups, and-subsequently halting the blocks at
adapted to change yarn fingers at each Oscilla
tion, and means adapted to retract the knitting
cams out of the path of the short operating butts,
said short butts being associated with the por
tion of the stocking blanks between the heel tabs.
such a space while manipulating a plurality of
adjacent needles in unison to produce narrowing.
14. In a method of manipulating an independ
25
ent needle stationary cylinder circular knitting
machine to make ?at stocking blanks where the
9. A circular machine for knitting a plurality " needles are arranged in a plurality of spaced
groups each corresponding to one blank, the steps
of stocking blanks having selvage edges, said ma
of knitting on all the needles in succession by 30
30 chine comprising a stationary needle cylinder,"
means of a cam block rotating in one direction
independent needles therein arranged in a plu
and simultaneously knitting on all theneedles in
succession in the other direction by means of
another camtblock rotating at another level, the
two blocks passing-in a space between the needle 85
H rality of groups spaced from each other, jacks‘for'
operating said needles each' having two or more
operating butts, and cam blocks rotating in op
posite directions each acting successively on the
operating 'butts at its‘ own level, in combination
with narrowing mechanism for the needles in
each group having a unitary member adapted to
groups, therebeing a reciprocatory yarn feed for
each blank, said two cam blocks being driven from
a single clutch, and subsequently halting the cam
blocks in such space by opening the clutch, and
simultaneously engaging another clutch to ma 40
nipulate a plurality of adjacent needles and
points in unison to produce narrowing of a
manipulate a plurality of needles en masse for
the purpose of transferring stitches.
'
_
10. A circular machinefor knitting a plurality
of stocking blanks having selvage edges, said ma
chine comprising a stationary needle cylinder,
independent needles therein arranged in a plu
rality of groups spaced from each other, multiple
operating butts associated with each needle and
plurality of loops.
‘
_
15. A circular machine for knitting a plurality
of stocking blanks having selvage edges, said 45
machine comprising a stationary needle cylinder,
independent needles therein arranged in a plu
rality of groups spaced from each other, multiple
operating butts associated with each needle and
two cam blocks rotating in opposite directions 50
two" cam blocks rotating in'oppOsite directions
at di?erent levels each adapted to cause all the
needles to knit in succession, in combination with
a plurality of narrowing jaw units each adapted
to manipulate a plurality of needles in unison for
11. A circular knitting machine for knitting a
at different levels each adapted to cause all the
needles to knit in succession, a plurality of units
each adapted to move a plurality "of knitting
plurality of stocking blanks .having selvageedges,
' elements. vertically in unison for a narrowing
a narrowing operation.
"
said machine comprising a stationary needle
operation, each unit having two jaws adapted to 55
cylinder, independent needles therein arranged
lie above and below butts on the knitting ele
ments, the‘ upper jaw being laterally pivoted and '
spring-pressed whereby the unit can depress a
group of knitting elements to idle position, move
laterally and rise leaving part of the group in idle 60
in a plurality of groups spaced from each other,
‘multiple operating butts associated with each
needle and two cam blocks rotating in opposite
directions at different levels each adapted to
position and taking butts of one or more addi
cause all the needles to knit in succession, in com
bination with narrowing ‘mechanism for each ~ tional elements at a higher level intothe unit,
group of needles adapted to manipulate a plural- ’ and means to halt the cam blocks in the'spaces
ity of needles in unison for transferring'stitches
between the needle groups during the narrowing
and means to halt the cam blocks in the spaces
operation.
betwcen the needle group during the narrowing
operation.
12. A circular machine for knitting a plurality
of stocking blanks having selvage edges, said ma
chine comprising a stationary needle cylinder,
,
-
65
16.;In a method of manipulating an independ
ent needle stationary cylinder circular knitting
machine to make ?at stocking blanks where the
needles are arranged in a plurality of spaced
operating butts associated with each needle and
two cam blocks rotating in opposite directions at
groups each corresponding to one blank, the steps 70
of knitting on all the needles in succession by
means of a cam block rotating in one direction and
simultaneously knitting on all the needles in suc
cession in the other direction by means of another
different levels each adapted to cause all the
cam block rotating ’at another level, the two
independent needles therein arranged in a plu
rality of groups spaced from each other, multiple
2,125,197
'
9
below the butts to a position below a di?erent
blocks passing in a space between the needle
groups, while reciprocating separate yarn guides
for each group of needles and halting the blocks
at such a space and lowering a group of needles
to idle position by means of jaws above and below
butts for said needles, moving laterally the jaw
group of butts, raising the jaws to the level of ad
jacent butts and then moving the upper jaw lat
terally into register with the lower Jaw and sub
sequently resuming knitting.
.
ARTHUR PASS.
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