US944968A - Knitting-machine. - Google Patents

Description

c. J. MUMPURD.

KNITTING MAGHINB. APPLICATION FILED MAY 1. 1909.

Patented Dec.28,1909

E.. MWRB; F MQTEEDAM, NEW YQEK winnend-momies.

fieeinetlon' of Letters Potent.

Fossilien nee.. es, ieee.

J Application l, 19%.. Sermide. $533,346.

To el?, 'zoimn 'it 'moy concern:

Be it known that l, Generos d..lvlnrnronn of Amsterdam, in the county of .lllontgoniery and State ol New York, lieve-invented een tein new and useful improvements inlnio ting-lllfechines; :ind l hereby declare that' the following is s full, clear, and1 smet. de-

scription thereof,.refereoee being liedtoyt-lie;

eecompanying drewings, which form part of this specification.

This invention is en improvement in stitch.

transfer mechanisms for cironlor, springv Vbesrc1-needle knittinglinecbines; endtlieob ject of. the invention is toseneble snob. niev chimes to bev4 operated toprodnce en, open;

'mesh or. open work fabric by, providing ineens whereby longi endslioift loops may beproduced ond trensferred to neighboring needlesin any desired re oler seqnenoeseid moons-comprising novel. fors, whioliy l; bereineell the divider wheel end divider oneself wheel, said wheels being.y provided with. blades after the manner of ordinary, buns; but certein of the blsdes are mede sheet/ei* g then the others in predetermined order.; such loingblndes being; adapted' to form stitches orloops longer thon those produced by the other blades y A orther obieet of. tbe. invention. is to. improve the arrangement ofthe spring. beeifd` needles so as to facilitate-tiletrensero tbe,` loops end prevent dropped stitolies, the completed fabric.

The enernl structure ofstlie machine tn which t e-inyention is applied is well. underings es is necessary to enable one familiar willst-lie ort to readily comprehend and use the invention end apply it bo limiting me chinos of the general type referred to,

In the drawings-Figline I Represents en enlarged plan view oit port of e circuler springneedle knitting machine showingfmy improved burs in operebve position. Fgr is' en eli-lar ed. view of asegnient of the divider wliee Fig. meen-enlarged diagrem maticel side elevation of some of the needles and the divider oasto" wheel showing the mode of operationof the letter. In seid drawings C desi,netes e" spring beard needle cylinder wliio is; adopted; to. rotate in the direction. indicated ley-theorrows, so as to carry the;needleszsnocessinoly:

pestv the looping, trens-ferring and cast-oil1 devices, as usuel. The needles N may be :ittnolied to the cylinder in any desired wey; tlie invention being applicable to knittin meeliines using, either e leaded-needle cylinder, or e trick needle cylinder.

l designatesr what l terni the divider wheel or bur, which operates at the outer 1 side of tlie needles and may be supported on the ususlbur stond or in any other suitable manner, not shown; and 2 designe-tes what .l tonni; the divider cast-od' wheel, or bur.,

which; oper-stessi, the inner side of the needies and: maryv be sup orledon an ordinary ginge-oi*t in other suite@ Snell devices being well known, These whoelsl and ere located edi acont the cylinder et epeint intermediate the usuel devices foi: looping elio yarnv on the needles (not shown) and the usuel lending and cestod devises, (not shown). These looping and lendingcest-olfy devices may be of any desired: kind end are wellknown with those familier with this class of machine.

'Ehe dividerwlieel; 1I is constructed much lilne,y en ordinary bur but is provided with alternate setsol long blades l? and similar but' shorter blades l, the relative number end distance spart of; the sets oi?l short and long blades depends upon the pattern to be roducedr e. the number of long loops to e produced.. in sequence end the number of iniermednte' short. loops to be produced in @donnee between tbe sets of long loops.l lnl the; esempl/e shown in the drawings the petoenn requires two long loops and two short loo sin; each sethence there ere two long bis, es l? ineecli set, and two short blades lb le niennennot shown. J

in eeicli set. Eni should be remembered that :los

divider really divides the previouslyorinedl loops', es desired,beceuse these long'y bledes l?" `in drawing; out long loops steel one yern, from the :fi-dissent, loops, but tbe two snort bledes- L prenent the, stealing of too 'I bla The divider-Wheel is positively and uni-l lforlnly driven as it has a blade in mesh with every needle space, so that there is less` danger of the wheel blades over-reaching and breaking needles. i

Beyond the divider-wheel 1 isa divider cast-oli' Wheel 2 which is substantially like a regular cast-od' bur-except that it has alter` nate sets of'long and short blades 2 and E) corresponding in arrangement to the blades of the divider-Wheel. Thus in theexjgrmple illustrated the divider cast-olf Wheel has tWo f lon blades 2a in each set, and v,two short des 2" in each set. This divider castoli Wheel casts the loops 0H of the heads of the needles and acts much like an ordinary eastoff bur, except that it preserves the lon and shortloops formed by the divider-Whse 1, that is, the long blades 2 draw and hold the lon loo s to the proper size in casting them o an the shorter blades 2" draw and hold the small loops to the proper size as is required. In the casting ofi' of each loop three elements are required; that is, the needle and two adjacent blades, and ny divider cast-oi wheel kee s the lon loops uniform in length, as We as the s ort loops, thus making the resultant fabric uniform in a pearance. This divider cast-olf wheel also as the advantage of a regular sitive drive since it has a blade meshing wit every needle space. l .Y

Beyond the divider cast-olf is a transfer presser indicated at 3,-Which may be of any type that holds the heads of tv vo adjoining needles together for the purpose-of transferring the stitch from one to the other and requires no special explanation or'illustration.

Another important featura'fthe invention is the peculiar arrangement of the needles N. By reference to the enlarged diagrammatieal Fig. 3, it will .seen that the needles N are slightly longer than the needles N with Whichvthey alternate. The difference in'length is of great importance.' The long needles N are the ones from which theA loops are transferred, and the greater length of needles N makes it possible to getthe loop directly over the head 'o f the adjoining shorter needles l needle N is pressed behind a long'needle N by tlie transfer presser (preparatory to `transferring the loop from the long needle to thev short needle)-the short needle does not'interferewith the loop on the lon needle and when the loop*v on the lon nee e'N is presseddownwar it will su y encompass the adjacent shorter needleN. With the ordinary arrangementof needles of. equal length 1t frequently happens; that the vloop to be transferred catches against: thejside of so that when a short the adjoining needle thus preventing the transfer`- and ultimately.. causing a. dro stitch. But by using alternate long an short needles I practically obviate such defeets. The long needles l\ are the ones from which the loopsl are transferred and the short needles N are the ones to which the loops are transferred; this feature is e11- tirely independent of the method of holding the needles.

The arrangement of long and short spring beard needles will not affect the correct action of the divider cast-oil1 and is of material advantage in the transferrin of the loops'as described above. Fig. 3 i ustrates the action of the alternate long and short needles and the alternate sets of long and short cast-off blades 2. The blades rise successively into casting-of position, and oertain loops are drawn longer than the others; but all the long loops are drawn to uniform length; and al the short loops are drawn to uniform length.

The essential function and object of the invention is to draw the long loops uniformly and hold them so, and to simultaneously keep theother short loops or thread intermediate the long loops under control.

With'all the blades being in condition for active operation with the needles, the mesh or operative'rlation between the burs and needles is constantly and uniformly maintained, and there is no danger vof the burs and needles gettin out of relation time or mesh as would be t e case if'the short blades were omitted; Whereas in my invention the burs are always in positive mesh with the needles and driven thereby. Obviously the order of long and short loops produced can be determined by the number and arrangementl of long and short blades, and sets thereof, in the Wheels l and 2.

Having described/my invention what I claim as new and desire to secure by Letters Patent thereon is:

l. In a knitting .machine for makin transferred stitch fabrics, the combination o spring beard needles,

alternate sets of long lades and short blades, for thel purpose of drawing long and short loops in regular sequence, substantially as specified.

2. In a knitting machine for makin transferred stiteh fabrics, the combination o spring beard needles, and a divider cast-off wheel having similarly shaped blades arranged in a ternate groups of long blades and'short blades, for the purpose of holding and casting off long and short loops in regular sepuence, substantially as speelied.

3. n a knitting machine vfor making transferred stitch fabrics, a needle cylinder, and spring beard needles, the needles from which the loops are to be transferred being slightly longer than the needles to which and a divider-wheel vhaving similarly shaped blades arranged in llty estese fr the loops are to be transferred, and ineens for transferring loops from the long te' the short needles.

4;.. In a knitting1 machine for making transferred stitch iabries, s needle cylinder having long and short spring beard needles arranged 1n alternation; in combination with a cast-off bur, and means for transferring loops from the lon to the short needles.

5. ln a spring bear needle lmittin maf chine for making transteired stitch fs ries, the combination of a. needle cylindexi' having alternate long and short needles, with a divider-Wheel and s, cest-0E Wheel.s seid Wheelsl being respeetivel aelapted to form alternate long and short oops, enel to esst e5 ssen loops; and means for transferring the leops from the long to the shertineeles.

in testimony that Gleim the foregoing es my own. sx my of two Witnesses.

CRLFN J. FRD. Witnesses:

Cms. E. Henna-n, Bmw. H, Wma.

signature n presence

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