US1848969A - Knitting mechanism - Google Patents

Description

March 8, 1932. E IE. PAQUET-rE ET AL. 1,848,969

KNITTING MECHANISM 1 Filed July 26, 1927 5 Sheets-Sheet 2 Marh 8,1932. E. E. PAQUETTIE ET AL 1,848,969

KNITTING MECHANISM Filed July 26, 192'? 5'Sheets-Sheet 3 SMQ/nto@ Ezfeznwzf@ March 8, 1932. E. Ar:. PAQUETTE ETAL. 1,843,969

` i KNITTIHG MECHANISM Filed July 2s, 1921' 5 sheets-sheet 4 vbllaurcrlx, 1932. f E. E. PAQUET-re: E1' nl. 1,848,969

" `KNI'MUIG MECHANISM 'Filed July ze, 19127* 5 sheets-sheet 5 I N VEN TOR.

Patented Mai'. 8, 1932 Y Ensae E. EAQUETTE Ann nomini) J. PAQUETTE, 4or WooDsTocK, ONTARIO', CANADA,

iran srarns APAfr-ENF',oFFIcisz' 'Assrcfnoas To soomfr @a WILLIAMS, `Incomeunier-ED, 0F NEW YORK. MY., A OOBPORA'- THEN F lEASSAGHUSETTS Application led July 26,

This invention relates to circular knitting machines and more particularly to mechanism for making a stocking with a gusset out the necessity of using an additional camA path on the pattern drum. Another object of the invention is to providefsuch a mecha` uisin which can be easily and simply adapted to the ordinary automatic seamless hosiery circular knitting machine. of the revolvlng needle cylinder type. Theinvention will be shown and described in the well-known;

Scott Sz. Villiams circular knitting machine,

such for instance as is shown in the patents to Robert il". Scott Nos. 1,152,850, dated December 7, 1915 and 1,282,958, dated October e9, 191e. the use of different lengths vof needlev buttsv controlled by separate raising and lowering cams actuated from racking means'which in turn are controlled kby the so-called gravity rod controlling the widening picker and the switch cam as usual,

ln the drawings, Figure l is a view from the leftlside of a Scott Sz- `ilf'illiams machine showingthe raising and lowering cams and the special mechanism for actuating Vthem according to the invent-ion` the parts being shown just prior. to the insertion of the raising cani 1l;

Figure 2 is a view similar to Figure l taken from the front oi? the machine;

Figure 3 is a plan view oic the mechanism shown. in Figure l showing some of the needle butts.; n

Figure 4 is a plan View of the control mechanism taken on the line 4-4 of-Fig- `ure l; c v

Figure 5 is a vertical section through the shafts carrying the narrowing and widening pickers, taken on the line 5-5 looking to the right as shown in that figure;

Figure 6 is a view similar to Figure 1' The invention contemplates gear (not shown).

KNITTING MECHANISMI 1927. Serial N0. 208,596.

showing the parts at the moment 'y when the locking pawl is idling over the low tooth.;

the raising cam is inserted;

Figure 8 is a diagrammatic view ofthe foot of a stocking produced bythe mecha nisin of this invention, showing the gusset; and j l Figure 9 is a development ofthe cam cyl-k inder showing the raising and lowering cams, the arrowfshowing thejdirection of movelment of the needles when the cam 10er the f "cam 11 is inaction. f I f l As above stated, the invention is concerned with mechanism for introducing, a gussetl Figure 7 is a detail elevation of the rais-i ing and lowering cams at the momentwhen y such as is shown at C in the toe or D -in the' heel' of'Figure 8 between the narrowed and f widened segments of'the ordinaryseamless heel or toe pocket', the mechanism being controlled through 'the medium of the `,usual gravity rod Bv (Figures `1 and 6). As in the cam415 or its equivalent (Fig. 9). Raising Y and lowering cams 10 and 11, such as shownv in the drawings of thisy application, are used in addition to the ordinary .switch cam. The mechanism for controlling the narrowing and widening cams 1G and 1l is actuated from the rack wheel 35, which can conveniently be mounted loosely on the end of the pattern chain shaft, and a pawl 40 which receives its movement from a cam 44 carried by the main drive shaft 45 adjacent the main bevelled This rack wheel 35 has thereon a low tooth over which the pawl 40 idles until the spring finger 46 fastened to the gravity rod B by screws 47turns the rack wheel 35 until the pawl 40 rides off the wheel.

Referring to the drawingsl in detail, the

needle cylinder A contains needles with butts of different lengths therein arranged in groups, the grouping in` one-half of the needle cylinder in the example shown in the` drawings consisting of a group of needles having short butts flanked at either end by a group of needles having slightly longer butts 5 and the outer ends of those groups coming at the median line of the cylinderand meeting there other needles having still longer butts For the sake of convenience these butts will be termed short, medium and longer butts. Adjacent vthe needle cylinder at or near the usual point7 lowering cam 10 and raising cam 11 are mounted on the bedplate C of the machine by means olfr a {llshaped bracket 14.` The shanks 12 and 13 of these cams 10 and 11 pass through. both arms of the .U-bracket 14 and have thereon between these arms stop collars 14el held with set screws 15 at the rear or radially outward end of the Shanks 12 and 13. Between these stop collars 14a' a 14 which is'locate nearest 'the cams 10 and 11 are compression springs 16 which have the efect of tending to urge the cams 10 and 11 radially outward. rlfhe radial mcvement of the cams 10 and 11 toward and away from'the butts of the needles isobtained from the rear f end ofthe Shanks 12 and 13 through bell crank levers 18, 19 having upturned ends 20 21 which engage against the outer ends of the Shanks (Fig. 6). These bell crank levers 18, 194 are mounted ,on the bed-plate C by means of bearings 17 and are adapted to oscillate on their longitudinal axes by movements received from the rack wheel through mechanism which will now-be described. These bell crank levers 1819have at their ends away from the upturned ends 20, 21 which engage 'against the outer ends of the Shanks 13, outwardly bent arms or eX- tensions 26, 27 pivoted to adjustable links 22, 23 which in turn are pivoted at 29 and 30 to levers31, 32. The other ends of the levers 31, 32 are pivoted at 33 to a bracket 34 suitably secured to any stationary part of the frame of the machine. The adjustments in length of the links 22, 23 are made by means of slots and set screws 28 as shown in Figure 1. The levers 31, 32 are raised and lowered by cam means on the rack wheel 35, these cam means consisting of lifting lugs 49 and 50 secured against one side face of the rack wheel 35 by screws 51 and small pins 52. These lifting lugs are adapted on revolution of the rack Wheel to engage against projections 47a and 48 on the lower edges of the levers 31 and 32 respectively, the bevels on the projections 47a and 48 engaging against a bevelled surface on the lifting lugs 4.9, 50. The rack wheel 35 is mounted loosely on the pattern chain shaft 38 as above mentioned by means of the retaining screw 37. The pawl 40 which racks the wheel 35 is carried by an arm 39 to which the pawl 40 is pivotal- 1y attached at 41. This arm 39 pivots about 65 the same center as the rack wheel 35 and it .ne arm of the bracket The revolution of the cam 44 in either direction is adapted to swing the arm 39 Yto the right, as shown in Figure 1, i. e., toward the front of the machine,.and to rack the wheel 35 forward one tooth for each reciproycation of the `arm39 except when the low tooth 36 comes under the pawl 40. The pawl then' idles back and forth over this low tooth until the spring finger 46 on the gravity rod advances the rack wheel. This advancement of the rack wheel by the gravity-rod occurs when the lgravi-ty rod, having been raised a sufficient distance to bring the spring finger beyond the next tooth on the wheel 35, is

llowered again to its lowermostposition.

The construction of the machine having been described. its operation will now-be set forth. Assuming that the machine has knit the foot and has completed the narrowed segments of the toe, the gravity rod which was raised at the beginning of the toe to lower the switch cam to the position shown in Figure 9 to raise the long butt needles, is lowered and the spring finger 46 engages one of the teeth ofthe rack wheel 35 and turns that wheel until the `pawl 40 can engage the first tooth below the low tooth 36. The needle cylinder is of course moving in a geciprocatory mannery at this time and therefore the` cam 44 is turning Hfirst in one direction `and then in the other. at the rate ofone revolution per each revolution of the needle cylinder. Therefore at each' oscillation ofthe needle cylinder the rack wheel 35 is advanced one tooth from the position shown in Figure ,6 until the lug 49 comes into contact with the projection 47a on the lever 31,.causing thelatter to elevate the link 22 to move Vthe end 20 of the bell crank lever 18 radially inward and put the cam 10into position where it will engage with the medium butt needles in the two flanking groups shown in Figure 3 and the long butt needles also. The long butt needles are immediately lifted out again'by the switch cam 415. The machine knits one oscillation or course with this lowering cani 10 in operative relation with the needle butts. This course corresponds with the line 53 of Figure 8. The next movement of the pawl 40 moves the lug 49 beyond the projection 47 a, thus dropping the lever 31, the link 22 and the bell crank lever 18, retiring the lowering cam 10. This leaves the two groups of medium butt needles down in action and the continued operation of the machine knits the courses of the gusset. The machine knits about six courses with the lowering cam 10 and the raising cam 11 both retracted and the medium butt needles down in action, the

Theil-.,the lug 50 onthevrack wheel comes into Contact with the projection 48 onthelever 32 and .acting throughthelink 32.0 f the'bell crank lever y19 theend. 21 of the belljcrank lever pushes thefraising `carn'rll radia'llj7 infward to its' operative position. This raises the 'medium butt needles ,to i'dle` positionand.;

lowering cam acting directly onv said needle the .raising cam 11 reinain'sin'forone oscillation,` thus making the stitches 'along line. 5,4

in' Figure 8,- completingthe gusset. lThe next rack of the wheel '35 fretiresfthe'raising. cam

j 1 1- andalsobrings the low-tooth 36 :undenthe i k. pawl40 completin'gthe cycleof'operation of the rack wheel-andthe pawl. The rack wheel and pawl' willnow rer'nainidle until-the nar; .r .Y

i @butts of 'different lengths, a "switch cam and pickers for gradually narrowing vand widen- "fing-to makev a pocket 'by acting on the needle rowed por-tion .l ofv the next kSpocliet/has "been comesintoactionand the widened segment is gradually,narrowing'fand widening b'y actL Vof independent` needlesliayingf group i' butts of different j lengths,` and ydet/ ice for. gradually narrowing-'and widening"a} o clretl by acting on the needlebutts; patternineaus'. ycontrolling the making oi'the narrowed' and' pattern means. l so ing' on the" needle butts tto; make fa pocket, in

combinationwithmeansc the' needle bu'tts.ft'o:.10W

ting 'directly on groupsffwhosebuttsareldistinguishe fo girati "ide ually@A narrowing` and 3. p Ina circular'v km ing widened segments,A and independent `rnean's for acting directly on the needle butts to produce gussets `between `the narrowed and/ of `independent needles having groups with" butts of'diliernt length-s, and a switch cam widened'fsegments of the pocket,v said "inydependent means being put into action by said 4. Ina circular knitting machine, afcir'cle of independent needlesy having groups with butts of dierent lengths, and devices for gradually narrowing and widening to make a.

pocket by acting on the needle buttsfin conm bination with raising and lowering earns and During these sixfcourses :the lifter' inechanisin adz'ilijted'y to. operate 4said and lowering cams independently of eac 'other to produce a gussetbetween the nar@ rowed and widenedy segmentso'f a pocket.

5.',-In a circular knitting machine, a circle of independent needles havinu groups with .et by acting on the needle butts, `and pattern means controllingisaid narrowing and ywidening, in combination with a raising cam and a butts of diii'erentlengths, devices for gradu- 'ally narrowing and widening-to make a pockbutts, means for-actuating said needle raising and lowering'caxns independentlyofsaid pattern inea'ns andmeans' actuated from said pat' butts, in combination `withindependent low- "ering and raising lcams forsaid needle butts,

"rotating 'canimeans whose rotation is'. in-

itiated lbythe'clrires`for gradually .MOW

ingandwid'ening said rotating cam means v'ineinga#adapt-ed to insert `and retract" said lowerin'gan'd raising cams for the purpose of "Pmdung guSSetS between the narrowed and I -'Widmed sgm'lltsfofthefpocket 2z 37. Inacimunr knitting machineaccea.

fing'toy claim. 6, thf`e 'provision of operating .means-:forfsaid independent raising and low- ""ering- `cams,' `saidfoperating-, means 'having 1,00 separ'atetiltingelements for actuating the 7 {,-ljr singiandfloweringcams.. glpi' machine', a circle .1v In afcircular kn'tting-` i inde'pendent needles having groups with utts of"different"lengthsandfdevices for' ad ally narrowing "and wideningf'toz make I oketb'yactingqon theneedle` but'ts2`rin. ina-tion with. 'independentfiraisifg' and ring c'ainsxaeting' fdirectlyfoni the -need1e tg tofr'a'i'sejfand lower; lnejdifumbntt groups {n o 'sunitsgrackingmeanscontrollingthetime of nsertionand rem'oyal of said raising' and lowering c'amsand acain peratingfintinied rela-` l"tion with the needle Acyli'mier yadapted to rack "-"said wheel,-l anda frod .forx'ning partofthe` devicegfor gradually narrowing andwidenwheel to produce afgusset vbetween 'the narl `rowed andv widenedsegmentsof apocket;

ise

.9. In a circular knitting machine, a circle ,A

and pickers v.forgradually'y narrowing,l and widening to make a .pocket by acting on the needle butts, in combination with independ ent lowering yand raising cams adapted tol'ow-v erand raisegroups of. needles as units,` and control mechanism adapted to cause lowering )of twolengthsof butts by said lowering cam l and raising of 011e .0f the two engths by said switch cam, for the purpose of producing a, gusset betwaenthe narrowed and Widcnei swfments of ih@ pocket. l

m tetimony whereof We 'nix' our gignatures.

EDGAR AQEITE; BQLAND if.v MQW'.

Images