Патент USA US2403864код для вставки
July 9, 1946. w. LARKIN» ‘ ' - 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 ' ' . 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. ' sinker-s10, l0. ' , . - ' 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 ;, , 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 - 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; , _ ~ Fig. 5 is. a detached and enlarged perspective view of‘one. of the stitchrlring's or sinker partition walls; 7 V .7 . 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. " < ' < ' 7 ‘Supported onnandby the flange 4, throughrrae ‘needle Cylinder |.. . ~ 5 ‘ > w ' > . 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 ' claim: v _ v . _ 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.