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Патент USA US2403864

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July 9, 1946.
w. LARKIN»
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SINKER GUIDE FOR KNITII‘ING MACHINES
Filed Aug. 18, 1945
2,403,864‘
Patented July 9, 1946
2,403,864
UNITED STATES PATIENT‘ OFFICE
_ mesne assignments, to Fidelity Machine Com-.
pany, Inc., Philadelphia, 2a., a corporation of
'
Pennsylvania
Application August 18, 1945, Serial N0..611,3l.9
13 Claims. (01'. 664107) p
1
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dial arms 5, 5 is a stationary sinker ring 6 having
This invention relates to circular knitting ma- ‘
radial grooves ‘l, ‘l for slidably supporting the
outer blade-likeends 'B-andthe cam lugs 9 of the "
chinesffor knitting ?ne gage sheer hosiery and the
like, and more particularly to the sinkers and the
stitch ring structure which supports the sinkers
in radial angularly spaced relation to each other
and with respect to the axis of the knitting cyl
inder.
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sinker-s10,
l0.
'
,
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' The inner blade-like ends ll, “of the sinkers
II], II). rest upon}_and_are supported by the upper
surfaceof a stitch Iririg. l2, which is diametrically
.
'vreduc'edj and externally threaded at‘ it's lower end
The principal object of the invention is to. pro
13 1 to, ?t withinand cooperateuwithv internal
vide a fabricated stitch ring embodying individ-.
ual interchangeable .partition'wallsv and com
10 threads of a 'counterborev l4 formed in the upper
plementary componentelementswhich will afford
adequate support and retain the sinkers in true
‘end ofthe needle oylirider'l. »3 Y
The sinkers l9, H] are disposed in radialver
vertical planes radiating from the axis of the
tical planes by and between vertically extending
needle cylinder, whereby uniformity of stitch\
, partitionsor walls [5 each of which is mounted
throughout the wholeof the product knitted on
in a vvertical radial slot [6 formed in an annular
the machine will prevail.
?ange l'lof the stitch ring [2.
- Each of the partitions i5 is provided withra toe
,
e ; -,
;.
_,
Another object of the invention is to construct
the interchangeable partitions in a manner __to
IBunderlying an overhanging solid portion I9, '
which forms an annular shoulder on the ?ange I],
afford smooth surfaces thereon adjacent the in
tervening sinkersto discourage accumulation of 20' at the inner end or base of each of the slots 16, to
keepthepartitions l5irom moving upwardly, i. e.
lint, etc.>, between the sinkers and the partitions.
In the accompanying drawing :, I
_
i
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, axially.‘ of. the needlecylinder. ,
, Each of the partitions .l 5 is- alsovprovided with
a rectangular recess._2_|-: at, its lower outer corner
mechanism of a circular knitting machine as con- ‘ 25 to receive a clamp ringfZll which encircles the
entire complement of partitionsand holds them
structed in accordance with the present inven
against, radially outward‘ displacement in the slots
Fig. 2v is a still further'enlarged fragmentary
I76, with respect to the axis of the needle cylinder I.
, Each partition l5,'in addition to the aforesaid
plan. view of a portion of the mechanism shown
in Fig. 1, with the sinker cam ring removed, as so.v toe and recess, isprovided with an inwardly ex
Fig. 1 is an enlarged fragmentary vertical'sec
tional view through the needle cylinder and sinker
tion;
.
I
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I
would be viewed along the line 2V—2, Fig.‘ 1;
. tending nose 22 which overhangs the upper end of
Fig. 3 is a vertical cross-sectional view taken
the stitch ring l2, in vertically spaced relation
,on'the line 3—3, Fig. 1;
Fig. 4 is a detached and, enlarged perspective
I thereto, and rests in a. radial groove-23 formed in
view of one of the sinkers;
,
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Fig. 5 is. a detached and enlarged perspective
view of‘one. of the stitchrlring's or sinker partition
walls;
7
V
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.
f
.,;
, the top side of asinker retaining ring 25, the lower
side of which rests on the top edges ,of the inner
blade-like ends I l, l l: of the sinkers I0, In, Where
bythese inner blade ends‘of the sinkers ‘are kept
from rising, in operation,"while they are permitted
to slide freely ,in' and out radially with respect to
Fig. 6 is a fragmentary detached perspective
,
view of a portion of the sinker retaining ring;
40 the axis of the knitting cylinder l.
Fig. 7 is a fragmentary detached perspective
The outerblade-like .ends‘8; 8 of the sinkers I0,
view of- a portion of the stitch ring wall or par
tition clamp, and
Fig. 8 is a fragmentary
plan view of a‘modi?efd
l,-; the needle or time cyl
form of the invention.
As shownin 'Fig.
I 0 are similarly held against rising from the bases
of the grooves 'l of thesinkerring 6 by the under
side of the horizontal top portion 29 of the sinker
cam ring 30 which isiprovided with a-cam groove .
;2B'_'into which the ca'mlugs 9 of; the sinkers 10
inder l is provided with circumferentially spaced ‘
project,’ and by which the sinkers are moved in
grooves orchannels 2 formed in or otherwise pro
vided on the ;outer peripheral surface of the cyl'-‘
.and out radially vwith respect to theaxis of the
inder parallel to the axis thereof, for the reception: 7
.of longitudinally reciprocable needles 3, 3 respec
tively, said’ cylinder including an annular flange
4 at its upper end through which the grooves
2,2
pass.
"
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7 ‘Supported onnandby the flange 4, throughrrae
‘needle Cylinder
|..
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~
5 ‘
>
w
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. The sinker cam ring 310 is provided with a ,de
pending v annular ?ange .21 which encircles the
outer peripheral face of thesinker ring 6, on which
7 the cam ring 30' is-concentrically mounted for rela
tive rotation and oscillation ‘during, the knitting
on the machine, fonéxemple;.ofafleg and foot. ,
2,403,864
3
and toe and heel, respectively of a full length
lady’s stocking or man’s sock.
Each sinker I0 is, in its outer or back edge,
Preferably the partitions ii are ?nished to
provide smooth surface all over each partition,
provided with an undercut recess 3| for recep
cessively sharp edges, etc., which would tend to
tion of an encircling elastic band, such as an
collect lint, thus the spaces between the sinkers
and the partitions are always substantially free
endless coil spring 32, by which the sinkers l0,
H) are constantly urged radially :inward. _
Each sinker II] is provided on its inner edge
with a yarn sinking and fabric holding hori
zontal notch 33 which cooperates with the nee 10
dles 2 in the formation of the stitch wales and
.
courses of the knitted fabric; and below this
notch each sinker has a fabric supporting edge
as by tumbling, to remove all tool marks and ex
of lint, thus avoiding the vformation of marks in
the fabric which ‘normally arise from accumu
lations of lint between the sinkers and their
guides.
In the drawing it has been necessary to ex
aggerate the clearances between the partitions
and sinkers for the sake of clarity of illustra
tion, thus it will be understood that the draw
34 formed on a nose 35, between the ‘lower edge
of which and the upper edge of the blade end 15 ing is for illustrative purposes only and should
II the sinker is recessedhorizontally at 36 to
not be considered as placing any limitations on
the scope of the ‘appended claims insofar as
span the sinker retaining ring 2-5.
dimensions, tolerances and clearances are con
In order to enter the spaces between adjacent
knitting needles 2, 2 of ?ne gage machines which
produce sheer fabrics, theinner portion Illa com 20
1.. A knitting'machine ‘structure comprising a
prising, approximately ‘one ;half of the full length
knitting cylinder, ;a plurality of needles ‘circum
of each sinker I0, is of minimum thickness; and
ferentially spaced ‘around and operable axially
in order to give the sinker sui?'cient structural
of "said cylinder, a plurality of sinkers operable
stability the outerthalf “lb of each sinker 10 is v_
"in planes radial to the axis of said cylinder be
of relatively increased thickness.
7
tween said needles, a ‘radially slotted ring on the
In order ‘to provide support ‘for the thin inner
upper end of said, cylinder, a plurality ‘of inter
ends of the sinkers, one .(Fig. 8) or both (Fig.
.5) of the opposite side'faces of the outer vertical
changeable partitions between said vsinkers in
radial planes coincident with said "needles and
marginal edge of each partition I5 is provided
‘with a raised ‘pad portion [5a, l5a which trans 30 mounted at their lower ends "in the "radial slots
of said ring, and a‘clamp ring concentric to said
versely thicken these "marginal portions of the
grooved ring and engaging said lower ends of
partitions [5 with respect to the inner plate por
said partitions to secure ‘said "partitions rigidly
tions 15b .of said partitions to an extent where
cerned.
I
,in the thickened marginal edges l5a substan
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claim:
v
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v
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_
in said radial slots against radial displacement
tially ?ll the spaces between, and _function to act
2. A knitting machine structure comprising a
as guides for, adjacent thin portions Hla of the
knitting cylinder, a plurality of needles circum
sinkers H1, from the back faces of ‘the .needles
ferentially spaced around and operable axially
to a radial depth substantially equal to the thick
of said cylinder, 'a plurality of ‘sinkers operable
ness of ‘the .clamp ring 20, as shown in Fig. '2.
When the ‘two pads l5a, 15a are employed the 40 in planes radial to the axis of said cylinder be
tween said needles, a radially slotted ring on the
opposite side faces I50, 150 of the marginal por
upper end of said cy'lin'denja plurality of inter
tions l5a, |5a are preferably convergent vto 'make
changeable _partiti'ons between said sinkers in
?at full-width sliding contact with the adjacent
radial planes coincident with said needles and
parallel side faces ‘Illa, l 00 of the‘thinnp‘late por
mounted ‘at their lower ‘ends in ‘the radial slots
tions l0a "of the sinkers l0.
of said ‘ring, a ‘clamp ring concentric to said
Due to the radial lconvergency of the parti
grooved ring and engaging said lower ends of
tions 115i and sinkers ID, the inner ends or edges
said partitions ‘to secure said ‘partitions rigidly
of the noses 22 of the partitions 1 5V are spaced
in said radial slots against radial ‘displacement
apart ‘laterally ‘to ,just a su?'lcient distance to _
therefrom, an annular shoulder on ‘said slotted
permit the noses 35 of the ‘sinkers Hi to slide
ring adjacent ‘the bases of the slots therein, and
comfortably therebetween and thus "the inner
a toe on each partition underlying said shoulder
ends of the partition noses 22 function as sta
to prevent axial displacement ‘of said partitions
_bilizing guides for the sinkers during radial re
relative to said'ring.
ciprocation thereof to prevent de?ection of .the
3. A knitting machine structure comprising a
thin portions of the sinkers from their pre 55
knitting cylinder, 'a plurality ‘of needles circum
scribed paths of movement.
ferentially spaced around ‘and operable axially
It will be ‘noted that the thickened marginal
of said cylinder, a plurality of sinkers operable
portions I50, of the partitions I5 lie directly
in planes radial to the axis ‘of said cylinder
behind and are parallel and adjacent to the
backs of the needles '3, 3‘; and ‘that they engage 60 between said needles, a radially slotted ring on
the upper end of said cylinder, a plurality of
the Lthinportions I lla of the sinkers immediately
interchangeable partitions between said sinkers
adjacent the needles 3, v3 along substantially the
in radial planes coincident with said needles and
full lengths of those-portions oi-the needles which
mounted at their lower ends in the radial slots
project ‘above the top surface vof the needle cyl
of said ring, a clamp ring concentric to said
inder substantially up to the horizontal plane of '
grooved ‘ring and "engaging said lower ends or"
the ‘yarn sinking and 'fabric holding notches 33
said partitions to secure said partitions rigidly
‘of the sinkers, so that the "sinkers are ‘maintained
in said radial slots against radial displacement
' against lateral “?exing ‘and ‘in parallel relation
therefrom, an annular shoulder on s'aidslotted
to the needles, and, that the needles ‘are pre
ring adjacent-the bases of the slots, therein, a
vented from being excessively de?ected radially
toe on each partition underlying said shoulder to
inward, thus these cooperating stitch forming in
prevent axial “displacement of said partitions
strumentali-ties are held in ‘de?nite operating
relative 'to said ring, ‘a blade-like end on each
~relationship at all times which insures uni
therefrom.
formity ~of stitch in the knitted fabric through
out the whole of the knitted -structure._
.
'
sinker extending between adjacent partitions,
'a retaining ring resting on ‘the upper ‘edges of
“
_
$2,403,864
5
the blade-like-ends-_of said sinkers, and noses
partitions between said sinkers in radial planes
ferentially spaced around and operableaxially of
‘said'cylinder, aplurality of'sinkers operable‘in
tact with adjacent faces of said sinkers. '
coincidentv with‘ saidneedles, and thickened mar
ginalledges' on said partitions adjacent said nee
the'upper side of said retaining ring.
’
dles, and" radially converging bearing faces on
4_:l-A,k1'llttmg machine structure comprising a
knitting cylinder, a‘ plurality’ of'needles circum- * said thickened edges-and making flat sliding con
on‘said ‘partitions: overhanging and contacting
»~8. Aknitting machine structure comprising a'
knitting cylinder, a plurality of needles circum
ferentially spaced around and operable axially :of
planesradial, to the'axis of said cylinder between
said needles, a radially slotted ring on the upper
end of said cylinder, a plurality of interchange 10 said cylinder, a plurality of sinkers operable in
planes radial to the axis of said cylinder between
able partitions between said sinkers in radial
said needles, a plurality of interchangeable par
planes coincident with said needles and mounted
titions between said sinkers in radial planes co
at their lower ends in the radial slots of said ring,
incident With said needles, said sinkers being of
engaging said lower ends of said partitions to 15 predetermined thickness throughout an outer por
secure said partitions rigidly in said radial slots , . tion thereof lying radially outward beyond said
needles and of a relatively lesser thickness‘
against radial displacement therefrom, an annu
throughout an inner portion radiallylinward of
, lar shoulder on said slotted ring adjacent the
said thicker portion and extending between said
bases of the slots therein, a toe on each parti
tion underlying said shoulder to prevent axial 20 needles ‘and said partitions, means slidably- sup
porting said thicker outer portions of said sink
displacement of saidpartitions relative to said
ers outwardly beyond said needles, and means
ring, ablade-like end on each sinker extending
supporting said thinner inner portions of said
between adjacent partitions, a retaining ring rest
sinkers inwardly of said needles.
ing on the upper edges of the blade-like ends of
9. A knitting machine structure comprising a
said sinkers, and noses on said partitions over 25
knitting cylinder, a plurality of needles circum
hanging and contacting the upper side of said re
ferentially spaced around and operable axially of
taining ring, said noses being disposed in circum
said cylinder, a plurality of sinkers operable in
ferentially spaced grooves formed in said upper
planes radial to the axis of said cylinder'between
side of said sinker retaining ring.
~
» a clamp ring concentric to said grooved ring and
5. A knitting machine structure comprising a 30 said needles, a plurality of interchangeable par- '
\ titions between said sinkers in radial planes co
knitting cylinder, a plurality of needles circum
ferentially spaced around and operable axially of
said ‘cylinder, a plurality of sinkers operable in
planes radial to the axis of said cylinder between
incident with said needles, said sinkers being of
predetermined thickness throughout an outer
portion thereof lying radially outward beyond
said'needles, a radially slotted ring on the, upper 35 said needles and, of a relatively lesser’thickness '
throughout an inner portion radially inward of
end of said cylinder, a plurality of interchange
able partitions between said sinkers in radial
said thicker portion and extending between said
needles and said partitions, means slidably sup
I planes coincident with said needles and mounted '
' porting said thicker outer portions of said sink
at their lower ends in the radial slots of said ring,
a clamp ring concentric to said grooved ring and
‘engaging said lower ends of said partitions to
secure said partitions rigidly in said radial slots
ers“ outwardly beyond said needles, and. means
supporting said thinner inner portions of said
sinkers inwardly of said needles including thick
ened vertical marginal edge portionson said par
titions adjacent and parallel to said needles and
arranged to make sliding contact with said thin
against radial displacement therefrom, an an
nular shoulder on said slotted ring adjacent the
bases of the slots therein, a toe on each parti
ner portions of said sinkers.
10. A‘ sinker partition for use in a circular
tion underlying said shoulder to prevent axial
displacement of said partitions relative to said
ring, a blade-like end on each sinker extending
between adjacent partitions, a retaining ring
knitting machine between adjacent sinkers
thereof, said partition being of predetermined
of said sinkers, and noses on said partitions over
hanging and contacting the upper side of said
~ partition adjacent one vertical marginal edge
~ resting on the upper edges of the blade-like ends 50 thickness throughout a major portion of its total
area, and a relatively rthicker portion on each
portion thereof.
1
11. A sinker partition for use in a circular
retaining ring, said noses being disposed in cir
cumferentially spaced grooves formed in said up
per side of said sinker retaining ring, and said
knitting machine between adjacent sinkers
thereof, said partition being of predetermined
partitions being thickened along marginal edges
thereof adjacent said needles to afford sliding
bearing surfaces forsaid sinkers on said partition.
6. A knitting machine structure comprising a
knitting cylinder, a plurality of needles circum 60
ferentially spaced around and operable axially of
said cylinder, a plurality of sinkers operable in
planes radial to the axis of said cylinder between
said needles, a plurality of interchangeable par
titions between said sinkers in radial planes coin
cident with said needles, and thickening pads
along the marginal edges of said partitions adja
cent said needles and arranged to make sliding,‘
contact with said sinkers.
,
7. A knitting machine structure comprising
knitting cylinder, a plurality of needles circum
ferentially spaced around and operable axially of__
said cylinder, a plurality of sinkers operable in
planes radial t0 the axis of said cylinder be
thickness throughout a major portion of its total
area, and a relatively thicker portion on each par
tition adjacent one vertical marginal edge .por
tion thereof, and provided with converging oppo
site side surfaces for contact with adjacent sinker
surfaces respectively.
12. A sinker partition for use in a circular
knitting machine between adjacent sinkers
thereof, said partition being of predetermined
thickness throughout a major portion of: its total
area, and a_ relatively thicker portion on each '
partition adjacent one vertical marginaledge
portion thereof; and provided with converging
70 opposite side surfaces for contact with adjacentv
sinker surfaces respectively, and an extended toe
on said partition along an opposite marginal edge
thereof and included on the thinner portion of
said partition adjacent one end of said thicker
tween said needles, a plurality of interchangeable 75 marginal edge portion of, the partition.
33,403,864
8
13. A sinker partition ifor use in a circular
said partition along 22.13. opposite ‘marginal edge
knitting machine between adjacent FSi-IikQI‘S
thereof, said partition being of predetermined
thereof and ‘ included »on the thinner portion .of
thickness throughout a major portion of its total
marginal edge portion of the partition, and an
said partition adjacent one vend “of .said thicker
area, and. a relatively thicker portion‘ on‘ each >
extended nose portion on the second .said mar
partition adjacent one vertical marginal edge
portion thereof, and provided with converging
ginal edge also included in said thinnerrportion
of the partition in spaced relation to said ex
opposite side surfaces for contact with adjacent ’
tended toe thereof.
sinker surfaces respectively, an extended'toe on
»
‘WALTER LARKIN.
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