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Патент USA US2411418

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Nov, 19, 1946.
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Nov. 19, 1946.
2,41 1,418
Filed Feb. l, 1946
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Patented Nov. 19, %946
ösça'?'- F'règeoi?ë, !Central Fai?'s, n. I., assig'nor to
H?inp'hil'l company, Central Falls', R: I., a cori
horatioii of Massachusetts
` Application February 1, 1946, Serial No. 644386
This invention reiates to a new and user'u? ir'n
Fig. 10 is a View iilustrating ,prior practice.
prövement in circular, independent needl?, linit
ting machines having superpo'sed ažiàlly aiined
having shanks of uniform width are used is 'dia'
cyiinders equ?'pp?d with double ended needles
grammatically shown in Fig. 10, in which slider
adapted to knit in either cylinder. m machines
of this type, the needles are usually operated by
slide?'s inthe slots of each cylinder which can
-be?coupled to and uncoupled from ñeedl?s as“ re
quired. Normally, the shahks of such sliders with
l is assumed to be in the same position as the slid;
ers shown in Figs. 1, 2 and 3, i. e., in its extreme
The condition p'revalent when ordinary sliders
downward and outward transfer position. By, it,
the exception of their óp?rating butts are öf a 10
r?taining band 2 has. been Sprung out as shown.
Slider 3 which_ preceded slider I through the
transfer operation should have returned by this
time _to completely within its` cylinder slot but
uniform width slightly less than the depth of the
cylinder Slots and are retained their?iri by one
or more spiral spring bands iitting closely 'around
instead follows the curve of_ the outsprung band
the cylinder.
ingáslider 3. If as is frequently the› case; _the
When transferrihg rrom rib_ to pia`in` _knitting
2 as shown._ This is true evenuoffl sliders preced?
transfer point is close to the point at whiçh yarn
or from one
of rib to another type it is usu
ally necessary to transfer ñeedlës rrom the upper
to the lower cyiiiidër and, consequently, to un
couple them from the ?ipser cylinder sliders so
that they can oserate in` the lower cylinder.
such uncoup?iñg is ?ffected by swin'ging the lower
end of each upper' cyiinder Slider concerned out
wardly so that its book is 'separated from the
is fed, a slider in this position Will strike the
yarn feed or otheräpartsof the machine with re
unser' hoök of` the_conespnncung` n?ed??? This
wings' the Io'wer end' of the slider' completely out:
side the' upper cy'lin'd?i* w'alls' and practically its'
entire length projeets to“ some exten't. In con.
seq?rence, the ??síii'eñt fëtäinir'rgb'à?nds aire' serun'g
outwafdly adj'a'c'?nt the` transfer point_ and', since
thesliders are' progressively uncouple'd; the bands
4. It has the usual walls '5 florming slots within
which the needles and sliders operate. In Figs.
extreme downward and outward position assumed
are' heId out more* or less constantiy so that they
in_ application for U. S. Letters Patent Serial No.
are" incapabi?' of returningí a siider which› has
completed" this transfer baci; into'it's cylinder siot
with' the necessary'sp'eed. The primiary object of_
this inventi'on is to" eliminate this'. di?icuity and
to› in'sure~` that each` Slider involved' in a' transfer
is“ returned quickly tó'its normal' position within
559,136 ?led` October 18, 1944._ The upper cyl
index' is surrounded by three Slider retaining
sultin'g damage. By this intention, this co'ndi-L
tion cannot occur since each slider` is returned
to its slot practically instantaneously after trans
fer by a band the' operation of which is unaffected
byanyother preceding or subsequent'siider.
In Figs'. 1-6 the upper cylinder is shown at
1-37 three sliders 6, 'I and 8 are shown in !the
when their needles vare transferred from the up
per to the lower cylinder. This transfer may be
e?ected by needle divider 9 such asthat disclosed
spring bands ?o, H and_l2. Slider 6, instead of
7 being of unifor?n width throughout the length of
its shank as is usuai, is provided with_ two recesses
I 3 and [4 so' positioned and oro?oortioned that
bands 10 and' |2 will' not bebdispiaced when band
lp?lji's swungout by the outward swinging" of slid'er
One form of theinvention is' shown in the draw-`
ing's' of which:
Figsrl", 2 and 3-are` diagrammaticenlarge?nents
of three upper cylinder sliders swung outward
to the 'extreme'transferposition;
Figs. 4, 5 and 6 are similar Views of the same
6 during transfer asishown-
Fi`g„ 1.4
Therefore, Slider â'wiiljbe› returned' to its nor-7
ma1..poSítí9n „within me; çy?mídêir" s?ot? ai „the
earliestpermitt?d instant-;by band H the 'action
of which is not in?uenced by any other Slider.
sliders in retracted position immediately after 45 Slider 'I is provided with a single recess 15 so
proportioned and positioned that when it is swung
out into the extreme transfer position shown in
Fig. "l is a plan View iargely in section illustrat
Fig. 2 it will carry its band ID with it but will
leave bands ll and !2 undisturbed. Similarly,
may be swung out for transfer without disturbing
the control of at least one of the retaining bands; 50 when slider 8 is svrung out to the same transfer
position by needle divider 9 as shown in Fig. 3
Figs. 8 and 9 are side elevations, Viewed from
it carries band 12 with it but does not disturb
outside and inside respectively, oi the retaining
bands ?n or ll because of recess !6 which ;is suit
bands and the means for maintaining them in
ably proportioned and positioned for this result.
their proper positions with respect to the cyl
65 That is to say, each slider during transfer is
inder; and
ing the way in which a slider of this invention
2,41 1,418
under compression from its own retaining band
and the outward springing of this band has no
effect whatever upon the positions or conditions
of the similar bands associated with the other
sliders. Therefore, the return of each slider to
its slot after transfer will not be retarded by the
fact that its band is being held out by` a subse?
across the bands there is a possibilíty that the
bands may be vertical?y displaced. To prevent
this, the retainer shown in Figs. 8 and 9 may be
provided. As shown, this consists of a bracket
quent slider going through the transfer „oper
20 andçzl through which bands šl0,.3_l›l, and !2
In Figs. 4, 5 and 6 it is assumed that the same,
sliders 5, 'i and 8 have completed the transfer
and have been returned within their cylinder
slots. It will be noted that slider 8.› is still under
the control of band H, slider T. of;`band_'li?r'and_„
slider 8 of band 12 each of which engages a part
of the slider of normal width., Even though two „
of the bands may be opposed to a recess orv
recesses in a slider the remaining band maintains
the control. If the sliders are moved further
(1 attached to any suitable ?xed part of the ma- "
chine' and which supports a U shaped retainer
!8 „provided with inwardly proiectingslots [9,
pass. Retainer !8 straddles thepoínt' at which
transfer occurs and thus holds the three bands
in correct vertical position at either side of the
,point at which correct placement of the bands is
essential. It isadjustable vertically as indicated
'by slots 22 and screws 23.
_ This invention may also be used upon eccentric
and concentric wrap spindles of the type em
ploying swingable'?ngers to insure the prompt
return of the ?ngersto their idle position inside
of the needle circle. By recessíng the ?ngers
upward in' their slots which, of course, happens 20 in a manner similar to that shown herein for
sliders, the independent return of each' ?nøger .
during the kriitting Operations, it will be obvious
by its own band can be assured; The' _invention
that one or more of the'bands lil, H and iž?will
may be used for still other purposes which with-1
be opposed to some part of each slider of normal
out further disclosure will occur to those
width and will, consequently, oppose any tendency
of the slider ,to move out of its slot. No slider
is ever free of this control.
` In Fig. 7, it is assumed that 1x1 rib knitting
has been in process and that, in consequence,
yalternate sliders are to be transferred to the
lower' cylinder for the production of a plain leg.
In' this ?gure, slider 'i is in the extreme outward
transfer position as shown in .Fig. 2 and retaining
band !El is in the corresponding outwardly Sprung
position also as shown in Fig. 2. p Slider (i, which
has just completed transfer, has been fully_ re
stored to its slot already by its band !2 which is
una?ected by the outswinging of slider l.
in the art as occasion arises.
I claim;
_j i
1. For a circular, independent needle, ;lšnit?
ting machine having coaxial cylinders pro;
vided with needle slots, the combination of iden-'
tical groups of sliders within the slots and each
slider being adapted to move longitudinally
thereof and to be swung outwardlypthereof; ;a
plurality of resilient means surrounding` said `
cylinder for maintaining said sliders within their
slots regardless of their longitudinal position,
means for swinging the lower end of each slider
outwardly from its slot adjacent the _lower _end
- .It will be noted that in Fig. 7 sliders] and 8
of its longitudinal travel, each of said sliders be;
;are spaced apart by another slider or cylinder „
ing provided with one or more depressions 'in its
slot. This is because of the assumption the ma 40 outer edge 'so positioned that each slider will
chine had been knitting ?x? rib- fabric prior to
_have operative contact with only a single one of
transfer. If it had been knitting 6213 rib. sliders
said resilient means when outswung. e
" '
6,- 1 and_ `8 would, of course, follow one another
2. For a circular, independent needle, knittingi
directly'. If a rib panel more than three needles
machine having 'coaxial cylinders provided with
'in width is knit before transfer so that groups 45 needle slots, the combination of identical groups
of more .than three needles have to be trans
of sliders within the slots and` each slider being
ferred„the sequence of sliders E, 'I and „8 _can be
adapted to move longitudinally thereof_ and to
repeated in whole or in part with respect to
be swung outwardly thereof, a plurality -of resil
the additional needles and control .of 'all of them
ientmeans" surrounding said cylinder for main
maintained, 'as above described, by the same 50 taining said sliders within their slots regardless
three bands 18,› li_ and !2. However, the'inven
of their longitudinal position, means for swinging
tion -is not limited to sliders or bands'in sets of
the lower end of each slider outwardly from its
slot adjacent the lower end of its'longitudinal
travel, eachof said_ sliders being provided with
of 'operation above described, the slider recesses 55 one or more depressions in its outer edgeso posi?
being positioned and proportioned, and the bands
tioned that" each slider wilihave' operative con-`
being suf?cient in number so that at all times at
tact with only a single one of'said resilient'mea'ns
'least one band will return'a single› slider toits
when outswung and means for retaining. said›
three but includes any number of` sliders and
any number of bandsrequired to effect the mode
'slot immediately after: transfer 'without 'influence
plurality of resilient means in predetermined,
by or upon any sliders which may be 'going 60
through the transfer operation.
Because of the passage' of the slider recesses
spaced, longitudinal positions around 'said cyliná
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