US2670617A - Wrap stripe attachment for circular knitting machines - Google Patents

Description

March 2, 1954 M. R. BRYANT 2,670,617 WARP STRIPE ATTACHMENT FOR CIRCULAR KNITTING MACHINES Filed Jan. 28, 1949 16 Sheets-Sheet 1 Ll II I I3 i .v /7 24 w 2 Z5 2 220 =5 62 j 68 Km I17 O O Q Marl/m Q /"yami IN V EN TOR.

ATTORNEY Mal'ch 5 M. R.--BRYANT ,670,617

WARP STRIPE ATTACHMENT FOR CIRCULAR KNITTING MACHINES Filed Jan. 28, 1949 1s Shee'b s-Sheet s MA/evm P BRYANB uvmvron ATTOPHE Y- March 2, 1954, Q BRYANT 2,670,617

WARP STRIPE ATTACHMENT FOR CIRCULAR KNITTING MACHINES Filed Jan. 28, 1949 16 sheets-sheet 4 v 1135 15! I I5! m ,5 V

I2? I 4 I88 I 104 102 M4 7. Q 9 v 75 M9 '85 105 1 we 95 22 '1 W 6 2 2/0. M96 22 F. I 20 203/95 15 -17 5a, 222 J m1 E? BEYAUT MAP-INVENTOR.

March 2, 1954 BRYANT 2,670.617

WARP STRIPE ATTACHMENT FOR CIRCULAR KNITTING MACHINES Filed Jan. 28. 1949 1e She ets-Sheet 5 MAI WM 1?. BRYANT,

INVENTORQ ATTORNE V- Marcfi 2, 1954 R YANT I I WARP STRIPE ATTACHMENT FOR CIRCULAR KNITTING MACHINES Filed Jan. 28, 1949 Y is Sheets-Sheet e MAevm P BRYANT. I 797"" 1 200 I INVENTOR. /77

201 204 BY 2 MS I March 2, 1954 I BRYANT 2,670,617

WARP STRIPE ATTACHMENT FOR CIRCULAR KNITTING MACHINES Filed Jan. 28,- 1949 1e sna -sheet 7 I06 I I06 Z 5 MAW/NE Dew/z INVENTOR.

'BY W ATTOPHEV- M. R. BRYANT March 2, 1954 WARP STRIPE ATTACHMENT FOR CIRCULAR KNITTING MACHINES l6 Sheets-Sheet 8 Filed Jan. 28, 1949 IN VEN TOR.

ATTORNEV.

M. R. BRYANT March 2, 1954 WARP STRIPE ATTACHMENT FOR CIRCULAR KNITTING MACHINES 16 Shee ts-Sheet 9 Filed Jan. 28, 1949 MAR wu 9 52mm,

IN VEN TOR.

ATTORNEY- Ma 1954 M. R. BRYANT 2,670,617

WARP STRIPE ATTACHMENT FOR CIRCULAR KNITTING MACHINES Filed Jan. 28, 1949 16 Sheets-Sheet l0 mmvlxvr v d E WWW/Mfg Mnem/ P. 64mm;

INVENTOR.

F 17-15 BY I 1 March 2, 1954 BRYANT 2,670,617

WARP STRIP TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT E S Av-ranum M. R. BRYANT March 2, 1954 WARP STRIPE ATTACHMENT FOR CIRCULAR KNITTING MACHINES 16 Sheets-Sheet 13 Filed Jan. 28, 1949 INVENTOR, MAPv/IJ 5? 52m ur.

" ATTORNEY- March 2, 1954 4 BRYANT 2,670,617

WARP STRIPE ATTACHMENT FOR fiIRCULAR KNITTING MACHINES Filed Jan. 28, 1949 16 heets-Sheet 14 INVENTOR.

MAPVIH R. BRYANT,

55 BY J21 ATTOPMEV.

M. R. BRYANT March 2, 1954 WARP STRIPE ATTACHMENT FOR CIRCULAR KNITTING MACHINES Filed Jan. 28, 1949 16 Sheets-Sheet 1 5 sor Z54 Ff: INVENTOR:

I MARVIN I2 8mm ATTOKUEY March 2, 1954 R A 2,670,617

WARP-STRIPE ATTACHMENT FOR CIRCULAR KNITTING MACHINES Filed Jan. 28, 1949 16 Sheets-Sheet l6 IN V EN TOR.

ATTORNEY Patented Mar. 2, 1954 'STRIPEV'A'ETACHMENKT KNITTING MAGHINES MarvinBeiBrx nt, znickora. N- 0 s t Elliott Knitting Mills,;Inc.,v,Hickory,,, N. Q. a. corporation of North Carolina 'Application 'January 28, 1949, Serial No. -'7-3,361-

12 Claims. (01. hi-54) i inventiom relates tic-improvements in circularknitting machines and moreespecially to a method and mechanism. for; iorming wrap stripes knitted fabrics whereintwo 0r-m0re difierent mediately adjacent each, other, 013; asa matter of fact, each of the-wales of the'knittedfabrics may have az-separatewrapyarn knitted therein, if so desired.

In the; case ofeuchcircular knitting; machines as the Banner 8 step.-Wraixstripeattachment marchineand the 8- step Argyle attachmentmachine, which are manufactured by the Hemphi'll Company of Pawtucket, Rhode Island, it. has heretofore been, impossible for two side-by-side needlestopick-up twodifferent wrap yarns in kitting. the same: course.

It is therefore the primary object-of'thiisqinvention ,to: provide nieans whereby the needle or needles for one color ofwrap yarmmayrisehigherzrelativeto the needlecylinder thanrthe normal height of the needle or needles for another-color o w p-ya ndatc p ovide fe rlifingersot: diffe ent lengths which are secured-totheiconventional wrapping head assemblyof the lgnittinnmachine. The -longer'finger or'fingers-.-feed thewrap yarn torthe needles which are disposed at the; normal height and the shorter; finger or fingersieedthe wrap yarn to --the needle or--needles which: rise higher than: the other. wrap-needles.

inasmuch- :as the mechanism meanired for. bringing about-this resultis quite-sensitive; in; its operation, yibration of the various parts-ofthe m chi must-be heldtcvaa minimum ;l'.-t isthereforaanother' object: of this-invention to provideasplitcammlate, the camzpl'ates here.- tofore having been of one. piece, whereby" that portion of the cam: plate-which :carriesthe: selector unit, ;a-n d:-t-he cam bars which controls-the iacleseand-theassociated needles: for thee-wrapping operation; is fixedly -mountedg onthe frameofthe machine andthat part- I of the qcain platewhich carriestheconventional stitch cam-iblock assemhly'is mounted"forgvertical movement-relate tine tothe fixed portion of thegcam plate, itbeing a;wel-l known fact thatthe stitch; cam 'blockmnst move vertically toapply DIODGI'" variable; tension to the knitted; courses.

-'-Heretofore,-when the cam plate has all loeerl of one pieceit has'beennecessary-to raise:and lower the entire cam plate in maintaining a proper tension OX1; theknittegl courses. This not noted the selectorfingers or cambarsofth seleetor tlfiillgqllll of.ialinementzwithrthe Selector cams i one thepattemdrnm aaidilfl'Qfintifihei seleq 'qr' unit,v WhiChfOfilBIlg changes the. pattern unlntentional ly;.: but; also, of; necessity, limited therange of; vertical movement of-the stitch cam blcclszassembly, due to the fact that the one piece-cam platexis .mounted oifecenter on, its raising and lowering means and ;consequently,.would bind on the needle cylinder if raised or lowered-beyond certain limits.

v Therefore; means are provided whereby the stitch cam block. will respond instantly :to changes in thetension or; fashion cams, which is particularly important in knitting tthe: looper cour es; after which, the looper round is knitted; in the final knitting operation of a. stocking. blank and; such means permit the-ruse of heavieryarns thanhave heretofore been possible dueto the increased range of movement of the stitchcam block.

Some. of'thes-objectsof the invention having been stated, otherobjects will appear as, thedescription proceeds; when taken in connection with the accompanying-: drawings, in: which ,Figure l is an elevation showing thegeneral construction 7 of a p llcnitting machine embodying someof the features of" the: invention;

Figure j 2 is an enlarged sectional plan view taken substantially along the-line 2-2 in- Fig- [Figure 3 elevationwithparts in section and is taken substantially along the line 3-73: in

FigureZ;

Jx'eignre e; is amelevation-mith; parts in section and 7 showing other. of the parts, schematically and being taken substantially; along the lined- 4in Figure-2;;

Figure 5-;is anelevationwith parts inesection and being. taken substantially along the line 5-5' in Figure} Figure 6 is a top plan view of the conventional jack cam; bracket holder assembly and isitaken substantially along the, liner 5-45 in Figure-.4;

Figure '7; is; an enlarged vertical sectional .view

taken substantially-alongthe line 1-4 in Fig- Figure :8- is anenlarged: vertical sectional; view showing the manner in which the new lower booster cam is mounted and showing. aportion of a selecting, jack, associated: therewith and isitaken substantially along. theiline: 8-8- in Figure 2 Figureaa is a top. plan view takensubstantially along the line 9-;9-in Figure 8. showingtthe. lower boost-er elevating camiand associated parts;

Figure 1.0? iszan exploded top plan viewiofwthe i-mpreaeda'splita cam plate removed from" the; machine:

Figure 11 is an elevation looking up at the lower side of Figure Figure 12 is a developed view of the various cams associated with the cam plate and showing the paths followed by the jacks and needles as they move from right to left and also showing the point at which the wrap yarns are fed to the needles;

Figure 13 is a vertical sectional view through a portion of the needle cylinder and showing two of the jacks, needles and cams associated therewith and is taken substantially along the line Iii-13 in Figure 12;

Figure 14 is a View similar to Figure 13 and is taken substantially along the line l4-M in Figure 12 Figure 15 is a diagrammatic illustration of a stocking and showing one type of wrap pattern associated therewith;

Figure 16 is an elevation of another stocking having a diamond shaped pattern thereon, which is commonly called the Argyle pattern and which is produced by the method to be herein described.

Figure 1'7 is a greatly enlarged elevation of a portion of the fabric structure of the stocking shown in Figure 15;

Figure 18 is a greatly enlarged elevation of a portion of the fabric structure of the stocking shown in Figure 16;

Figure 19 is a vertical sectional view similar to Figure 13 and is taken substantially along the line lB-IB in Figure 12 but showing the jack raising the higher than normal wrap needle;

Figure 20 is a view similar to Figure 13 and is taken substantially along the line -40 in Figure 12;

Figure 21 is an isometric view showing a particular set of selecting jacks for making the pattern shown in Figures 15 and 17;

Figure 22 is a schematic elevation showing a portion of a conventional wrap head and the upper ends of a group of needles and the feed fingers associated therewith for making the pattern shown in Figures 15 and 17, and showing the feed fingers turned on their vertical axes for purposes of clarity;

Figure 22-A is a schematic top plan view showing the Wrap disk and a portion of the needle circle;

Figure 23 is a sectional plan view of the wrap finger supporting disk arranged for use on the conventional wrap head in producing the pattern shown in Figures 15 and 17; 7

Figure 24 is an elevation showing another type of wrap head with the wrapping yarns through the various wrapping fingers for knitting an "Argyle pattern such as that shown in Figures 16 and 18;

Figure 25 is a sectional plan view taken along the line 25-25 in Figure 24 and showing the wrap feed fingers mounted on the upper and lower disks but omitting the wrap yarns;

Figure 26 is a sectional plan view taken along the line 25-25 in Figure 24, showing the lower disk and associated guiding fingers but omitting the wrap yarns;

Figure 27 is an isometric view showing a particular set of selecting jacks for making the Argyle" pattern shown in Figures 16 and 18;

Figure 28 is a View similar to Figure 24 but showing fewer wrapping fingers mounted on the wrap disks for knittin an Argyle pattern slightly difierent from that shown in Figures.

16 and 18;

Figure 29 is a view similar to Figure 28 but showing the mechanism as each of the disks and accompanying wrap yarn guiding fingers have been rotated to a diiferent position;

Figure 30 is a sectional plan view being taken substantially along the line 30-39 in Figure 29 General description The general construction of the knitting machine with which this invention is adapted to be associated comprises a base plate I9 (Figure 1), a driven needle cylinder H, a sinker head l2, a cap I3, and a latch ring [4. The latch ring is pivotally swung in the conventional manner and carries the conventional yarn feed fingers generally indicated at It and through which the body yarn l6 as well as plating yarns, and reinforcing yarns are fed in a conventional manner.

The yarn feed fingers l5 are adapted to be controlled from a main cam drum 2!) fixedly mounted on a driven cam shaft 21. The usual cams for controlling the yarn feed fingers l5 and many of the intervening connections are not shown since they are well known and are not materially different from those in the usual types of Banner machines.

It might be stated that although a Banner machine is generally referred to in this specification, it is equally possible for the principles of this invention to be applied to various other machines, it being evident to those skilled in the art that some modifications are required if it is desired to apply such principles to another type of machine.

A conventional stitch cam block 24 is slidable in the usual supports on a cam plate 25 and carries a conventional center cam, stitch cam and other cams, all of which will be later described in detail. The cam plate 25 is a part of the split cam plate as will be later described.

Referring to Figures 13, 14, 19 and 20, the cylinder H has latch needles broadly designated at 30 working in the usual needle slots beneath which are individual selecting jacks broadly designated at 31. The needles 30 have butts 32 and are usually divided into long and short butt groups for the well known purpose of separating instep and heel needles during the knitting of a heel and toe. Each of the jacks Bl has a plurality of removable butts 34 for pattern purposes. These butts may be removed by breaking or any other desired method. Above these removable pattern butts is a butt 35 for the purpose of raising jacks and associated needles by a dividing cam, not shown, for knitting the ribbed elastic top portion ofa stocking. A further description relating to the ribbed elastic top is deemed unnecessary and the butt 35 is merely shown be cause it is a usual part of jacks of this type. Some of the jacks 3| have an outwardly projecting butt 36 at the lower end thereof which is adapted to engage cams which are a part of the present invention and will be more fully described later in this specification. Each jack 3! on that side of the needle cylinder which knits the sole of the stocking has a shorterxbutt 3'!- i relative to the butt 35 for the purpose of engag-- more ing a plaln s'ole-cam to return-partially-selected jacks to original position "for cutting out the pattern onshort butt needles during knitting be .butt' 4"0' on=-the jacks-31 which has been-omitted from thejacks-Figures l9- and 20,and-this' master-butt it engages a cam to be later described-which is essentially a part of the-selecting means.

The function of the butts 34, 36', ST- and ofth'e 'j'acks- 31 as well as the'various cams and selector elementswhichfunction upon these jacks WilI-be 'later' described in detail.

Inmakingthe pattern shown in Figures and "1'7, the wrapping is accomplished-Many satisfactory wrapping mechanism, but" prefer-. ably a singledisk'wrapping means of" the Banner typesuch as is" disclosed in'U. S. Patent No. 127021508 is to be employed. The wrap mechanismess'hownin said patentis employed-exactly" as described withthe exception ofthe'feed fingers; to beipresently described, which area part'o'f this invention and; through which the wrap yarns pass rather than through the guiding' eyelets '-l' I 6 in said' patent.

'In; view of'saidpatent; the mechanism relatmg to 'the'wrappingme'chanism need not be described in detail and the showing includes a verticaliy' disposed spindle 45' (Figure 1) eccentricall'y mounted with respect to the 'needle cylinder'l-il "and rotatable at 'a l to 1 ratio therewith. This'spindle 45 carries 'at'its lower end a disk 46 (Figures 22 and 23) having a plurality of; pairs ofwrap thread guiding fingers secured thereto as :by screws 58, each pair 'ofwhich consists ofa long. finger 4! and a. short finger 41a. These. fingers are spacedaboutthe periphery of the disk 45"for guiding individual wrap yarns, supplies of which are. mounted at the usualposition-at the upper end of this eccentrically rotating assembly. Except when being specifically referred to, the wrap yarns will be generally designated .at 50. Suitable tension means such as shown in PatentNo. '1,702,608-are employed in the present invention- The machineis provided Witha suitable wrap. homes along which the wrap yarnsaround'ithe needles move .to. the knitting point.

Referring to Figure 22, it may be notedithat the-lower ends ofv wrap fingersA'laare disposed at-a higher horizontal plane than the lower ends of; the wrap fingers 4.1 and this is accomplished by; securing the .inwardly bent portions of the fingers 41: to thebottom ot the: disk 4% and/securing-the inwardly bent portions .of thafingiers 41h tothe topv of: the disk tithe. fingers 11 and andvd-la: actually being ofthe same: length. .It is thus seen-that. therneedles :39 that-are raised: to

thesnormal. height for-1a wrapping operation, by

means to be later described, willreceive the wrapyarn' 56 from the wrap flnger t! in Figure 22 and the needles 36,'which are elevated to a higher position than the normal wrap needles are elevated, will receivethe-wrap yarn Fit-fromthe wrap finger Ala, whoselower end is disposed at a,higher-elevation'than the lowerendof the wrap finger 4T show-ninFigures 22 'ancl 31.

Although Figures 22 an'cl 31 show but one pair of wrap fingers, itis manifest that many more pairs-of fingers wouldbe required to' make the pattern: shown in Figure 15. In this instance a. dist: substantially larger than normal wouidbe required (such is shmvn' in Fig'lI1e 23) in or-- der "to; accommodate the required; numbewo'fi wrapping fingers 4.1" and flit;-

Now, referring to Figures 1 'to'i'7 incl'usive',::the conventional: selecting means for 'determiningrthewrap 'pattermwill be' described'. "I lIe base plate M has a circular portion which 'has an extension--56 on which is=mounted a postli'l (Figure: 3) which is slidable-"witliin asupporting -arm; or bracket 58 (Figure 3) which iscapable of beihg swung about a pivot 6| on the -extension-oi tha base BEL-and is1suitably restrained by :a shoulder screw 62 working within a- :slot: 63 :adj'acent its other :end. spring 64 isconnect'eit to 'the: swinging bracket 58' and to a fixed 'partsof the machine :andtendsfto: draw the 'patternl d'runr assembly inwardly to .2 a limit.- determined by -the adjustable stop: ..sorew 365. Means *iortswinging the bracket v513i as well? as thestructure-1; relat ing to the pattern drum assembly, to'be- 1ater described; .isrcle'arly showrr and described S BaterittNhrZfifigS-fifli. Thatmechanism need not" bezdescribedin detail; here and theshowing ineludes. a pattern :drum 10' which is 'rotatably mounted. T011 the-posed? and isrestra-ined by the 'usua-l frictionielements 21l :disposed :at the upper end; of the'jpost; 51:.

'The 'lower part-oi the tpatterndrum "lfl iias a ratchet wheel" l2ztintegral therewith thererbeing' a; connection)'betweenzftheirsame and other. driven parts of the-machine,zand iby meansof which the pattern drum I0 is rotated in step by step relation. Thepattern drum 10 has a plurality or patterrrdisks I5 thereon which areskeyed to rotatewith the pattern drum 10-, these-idiskshaving. removable. butts 16-, some-of; whichnare broken. away. and some of. which are shown intact inFigures. 2, 3. ands5i The. selectionsdetermined by the butts; 15 .are. imparted, through a-- series. ofslidable plungers or selector fingers?! L, erother suitable-means, to the: butts-314s ofx the-jacks 31 (Figures l9; 20,. 2-1., and 13). These selector fingers-Hare arranged tobe spaced properly .ior engagement: .of their inner. beveled ends beneath the butts- 34 oi the jacks-3i at the respective heightszofi'theselector' fingers. The selector fingers IJ--,are.=.urg.ed outwardly by individualsprings i(-E ig ures=.6:-and '7) but. are .pushed linwardly when they are enga'ged by 'butts 'ffi ofsthe. selector. drum-1d. :If; inzaniinward position; :a: selector finger wilL. engage any butts 34 at its level and will raise.-them,;as;shown in Figure:1-2;so.-.thatithe master butt-Allwillengagetand-irideupz-acam: 82.- (Figures :12. and:13.-)..

. t will. be; noted. in -Figure v1-2 that :those; jacks;- 3 l. havingzthe'master: butt All thereon do: not: have the ou-twardly projecting butts :36 at.-.the--.lower endsethereof :and conversely, the? jacks 3 L having:- thewoutwardiy-gprojeeting 'butts 'tfi:at. the lower ends'i-thereoii def-not: haveithe master butts. ails-and? it is only they jacks [31 having the; masterrbutts 40 integral therewith which will ride uproncthe' cam 82"v inzthepmanner:heretofore:described. The purpose of the outwardlyxprojectingbutts :35:- at: the lower ends: ofv the. j-a'ckst3 Ivand: the eliminatetionof' the. master butts- 4t;;on.thet jacks? M ,I will: be later? described in rdetailtinasinuch: as: itgisr important "part of 1 the: invention.

.Above the group:oflseleetorfingers or: piungers' 1-1 isai'sin'gle plunger: 3 (Figureilhaving: a canr 84 at its inner end. This plunger slidesiin the same" supportsBS and '86 in which theselector fingers .or pl'ungers W slide and is 'held o1" urged inwardly-by s,spring 81. This cam 81 engages found-on the jacks under the sole group of needles only. This cam is projected inwardly at such times as patterning is to be discontinued from that group of needles; that is, in the high splice or double sole needles. The plunger 33 has a projection 81a (Figures 6 and 7) which is engaged by a toe portion 88 of a lever 90. This lever 90 is pivotally secured as at ill to the bracket 86 which supports this portion of the selecting mechanism.

A link 92 connects the outer end of the lever 90 and projects downwardly through the circular base 55 to bear upon the main drum 20 in a conventional manner, or to be raised by certain cams, not shown, mounted thereon. When the link 92 is raised, the spring 81 will be allowed to draw the plunger 83 and its cam 84 inwardly so that the butts 37 may engage the same. When the link 92 is not in a raised position, conventional spring means, not shown, or its own weight will cause the same to move downwardly to thus hold the cam 84 outwardly and out of the path of the butts 3,! on the jacks 3|. When in butt engaging position, the cam 84 will immediately lower any jacks, having a butt 31' thereon, that have been raised by the selector fingers Ii before the butts 34 have a chance to ride up the cam 82. Thus in the making of plain sole, wrap stripe patterning may be continued through the instep but will not appear in the sole.

Split cam plate Referring to Figures 1, 2, 3, 4, 5, 10 and 11, inelusive, the structure relating to the split cam plate is clearly shown. In Figure 10 it may be noted that the cam plate 25 is out along the lines I and Ifll thus leaving a fixed member or fixed cam plate I02. The parts 25 and I02 are shown separated in Figure 10; but when assembled on the machine their proximate edges abut against each other in a sliding fit. This fixed cam plate I02 has a conventional instep cam bracket H33 secured thereon, as by screws I04 and mm, (Figure 5). a threaded hole 93 in the plate I02 and screw IMa slidably penetrates a hole 34 in the plate I02 and also slidably penetrates an ear of a conventional jack cam bracket holder I05, the lower surface of the ear being engaged by a post I08 1 and the lower end of which is welded to a plate I0! (Figures 5 and 11).

The aforesaid jack cam bracket holder I05 is an integral part of the unit in which the selector fingers I? are mounted. The screw I04a, which s idably penetrates the ear of the jack cam bracket holder I05, is threadably embedded'in the upper end of the post I06 to thus secure the instep .cam bracket I03, the jack cam bracket holder assembly I05 and the fixed cam plate I02 disposed therebetween to the upper end of the post I06.

The jack cam bracket holder I05 has an ear 95 at the opposite side thereof in Figures 1, 3 and 4, the lower surface of which is engaged by a secand post I08 and the lower end of which is welded to the plate IIl'I (Figure 11). The plate I0? is secured to the circular portion 55 of the base plate I0, as by screws H0, which also secure the extended portion 56 to the circular portion 55 of the base I0.

- Conventional needle support cams H2 and H3 are secured to the fixed cam plate I02, as by screws H5 penetrating threaded holes 95 in cam plate I32 (Figures 2, 5, and 12). Beneath that Screw I04 is threadably embedded in portion of the cam H2 which is penetrated by the screws I I5, is a screw H5- (Figure 2 and 5) the head of which is flush with the top surface of the fixed cam plate I02 and slidably penetrates hole 35, countersunk at its upper end. This screw H6 secures the fixed cam plate I02 to a third post I I? which is slidably penerated by the screw Ht and the lower end of the screw H6 is threadably imbedded in a plate H8 secured as by screws I20 to the circular portion 55 of the base plate I0.

A conventional cam I is disposed above the juncture of the needle support cams H2 and H3 (Figure 12) and this cam is adjustably secured, as by a screw $26 (Figures 2 and 5) to a bracket i2! which is secured by two screws Q'I to the cams I I2 and H3.

, Now, referring to Figures 2, '3, 5 and 12, the conventional group of cams constituting the socalled instep cam assembly will be described. These cams serve, upon going into reciprocatory knitting such as in the heel and toe, to raise the instep group of needles to an inactive position which they will retain until rotary knitting i resumed. There are thre of these cams herein designated as an instep draw cam I36, an alining cam I3! and an instep raise cam I32 (Figure 5). Heretofore, the cams I38 and I3I have been made of a single curved member; however, by referring to Figures 12 and 13, it may be observed that the butts 32 of some of the needles 30 must pass between the cams I 30 and HI while these cam are in their lower position and as the butts 32 are raised and as the wrap yarns 50 are fed to the higher than normal corresponding wrap needles. Therefore, the cams I38 and I3I are joined together by an arcuate member I35 (Figure 2) out of the paths of the butts 32 to thus form an opening I33 between the arcuate member I85 and the needle cylinder II and it is through this opening I 33 that the butts 32 of some of the needles 30 pass in picking up the Wrap yarn. The cams I 30, I3! and I32 are arranged to have vertical sliding movement in a conventional manner, the means for transmitting this vertical movement to the cams I30, l3l and I32 being clearly understood by those familiar with the art and a further description is not deemed necessary with the exception that the instep cam bracket I83 has a block I37 (Figure 2) mounted therein for vertical sliding movement and the cam I38 is secured to the same as by a screw I 48 (Figure 12). The means for transmitting vertical movement to cams I30, I31, and I32 is set forth in U. S. Patent No. 2,244,870.

Referring to Figure 12, it may be observed that the cam blocks H2 and H3 have a groov I39 at their lower edges which is adapted to guide the jacks 3i having the butts t0 integral therewith and the groove its in the cam I I3 forms a raise cam HII. Now, as the jacks 31, having the master butts l0 thereon, move from right to left in Figure 12, the cam MI will raise the jacks 3I having the master butts 40 thereon in such a manner as to bring the butts 3 1 into alinement with the ends of the selector fingers "El. In the event that a particular selector finger is in the path of the butts on the jacks 3i, having the master butts E3 integral therewith, the master butt 30 will ride up the cam 82 in the manner heretofore described. In so doing, the butts 32 of the associated needles 30 will move along the path indicated by the dotted lines M3 and will be moved downwardly by the cam I25 and will then be raised upwardly by the cam H3 and, as

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