US1035752A - Needle for knitting-machines. - Google Patents

Description

R. W. SCOTT.

NEEDLE FOR KNITTING MACHINES.

APPLICATION FILED JUNE 1, 1908.

Patented Aug: 13, 1912.

WEJMA-MJLQ I UNITED STATES PATENT OFFIGF.

BOEERT W. SCOTT, OF LEEDS POINT, NEW JERSEY, ABSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO SCOTT dc WILLIAMS INQOBROMTED, 0F CAMDEN, NEW JERSEY,

A. CORPORATION OF NEW JERSEY.

NEEDLE FOB mime-moms.

' Application filed mm 1,

To all it mag concern;-

Be it known that I, ROBERT W. Soon, a citizen of the 'United States, residing in" Leeds Point, Atlantic county, New Jersey,

have invented certain Improvements in Neethe old stitch when the new loop is being drawn through the latter, the ob ect of my invention being to provide a simple, cheap and efiective needle of this class intended es cially ior use in machines of fine gage.

T is object I attain in the manner herein after set forth, reference being had to the accompanying drawing, m.wh1ch- Figure 1 is a vertical sectional 'view of sufficient of a knitting machine to illustrate my present invention, the' needle being shown in the elevated position where its hook engages the knitting yarn; Fig. 2 is a similar view showing the parts in the positions assumed by them when the needle has been partially retracted and is about to draw the new loop through the preceding stitch; Fig. 3 is a view, showing the relation of the parts when the new loop has been drawn;

ig. 4 is a view, showing the relation of the parts, preparatory to the rise of the hooked member of ,the needle to' again receive the knitting iyarn; Fig. 5 I is a similar view, showing a difi'erent' operation which may sometimes be resorted to; Figs. 6 and 7 are enlarged views of part of the needle showing the sliding member at the opposite extremes of its movement in respect to the hooked member; Fig. 8 is a section on the line a--a, Fig. 6, and Figs, 9, 10 and 11 are views illustrating modified forms of the needle.

An ordinary knitting machine latch needle is objectionable for many reasons, among which may be mentioned the length of travel of the needle; the weakenin of the same by the latch-receiving slot an the transverse pivot-pin openings; the delicacy Specification ct Letters Patent.

Patented Aug. 13, 1912. 1909., sem ualsaoio.

of the latch and its pivot pin; the wear upon the latter; the liability of the latch to be- ,come brokenor bent, thus rendering the in egnnect-ion with the latch, of an opener therefor, in order to insure the clearing of the book of the needle for thereception of the fresh yarn; the number of o erations necessary to produce the needle, an the consequent cost of the same. I

An ordinary .latch needle must have a reciprocating movement exceeding twice the len 11 of its latch, and, B.S 'th6 efiective .wor in cannot e greater than 45, such cams occupyso much space in the cam cylinder, that, in machines of small diameter the use impracticable.-

Thesubstitution of a sliding hook-closing member for the swinging latch obviates the objections above noted, but, while. needles havin such slidin I members have heretofore en propose the have not supplanted the latch, needle use they have not been adapted foruse in the fine gage machines now employed for knitting hosiery and underwear. y invention has, therefore, been designed with the view of providing a needle of this type which is capable of use in machines having a age as fine as, or finer than, those now emp oyed.

In the drawing, 1 represents part of a cylinder, straight-bed, dial, or other needlecarrying member of a knitting machine ghereinafter, for convenience, termed a cylinder) and 2 represents part of a cam ring, cam-carrying plate, or other cam member of the machine venience; termed a cam ring) The cylinder has needle'grooves 3, and each needle hooked mem er of the needle in its respective groove of the needle cylinder is effected,

of more than one yarn teed is generally (hereinafter, for conouter end, a face groove 7 with cam f0rnia-' needle inoperative; the necessity for the use,

angle of a needle-actuating cam com rises 11 hooked member 4 and a jack 5,

acted upon by a projecting cam 11 and a these cams being smaller than the usual cams, however, because of the-lesser movement of the needle required as compared. V withthatof a needle having a swinging latoh The groove? receivesa'spring tongue jack 5, and the latter bears against the face" of the member 4, is guided withthejatter. -in the groove 3 of the cylinder and has 'a I I butt 14 to be acted upon by aprojecting can;

ceding stitch 1 lving on; top'of tie needle ',.=;cylinder andt e spring tongue :13- being con!- tained' within the groove 7. As the hooked member of theneedle is retracted by fme"ansi' 39, of the, cam v12 ,the'jack '5 may either remain .stationary or maybe-projected: by; the cam" In; either! ,case', .th euoami formation L 9 5 will engage the Eupper: end ofithe tongiie 13' 7 and throw-the same outwardly, and by the 3 j 25. ti e, h b k, 6 reach s the apper: end of y, the tongue, the latter will be in position to oyerlap and close said ,ho ok,-' as. sho wn in- Jn ,7. Ban ng hookedm'ember and; the

. j (gram now: retracted;together wand-- the tongu,e,- -l3.=eontinues. to perform .its

z e afi qn-o clos ng the hook until theIlat teh as been drawn 'down throughzthe-previous lgstitch y thje latterhasA-been cast over the hoo, and thenew .stitehlhas been: drawn, as

h, sa sb own in.,F1g..' 3,, The retraction" of the I, spring tongne j13- may .continue until theupper endgofisaid tong te'has been withdrawn lntothegrooye Tasfshm'vn. in Fig.4,1where-- 'YIUPOQ both thehookedflmember and the jack v 14;; 5 may projected, together-until the stitch hasbeen'slippedlbackiof the upper-endofthegrooyef, as showni'm. Fi 1,-and' the. I knjttingyann isagain engagedibyithe hook- 1; ti preparatory ,to, ja repetition oftlie operatio nsnb'ye described. As an alternatith'to.

. th s method pf operation', the hooked meinu ,biof the needlemayiafter the parts reach- I the retracted position-shown Fig. 3, be i prpj'ect ed alone, as-shown ;in Fig. 5, the

tengsne 13 springing back 'intoithe groove'7 as. e.' cam formation is withdi awn from beh1nd 1t, and being then projected with thehookedmember 4 so asto passthrough the. i st tch, nd into position, for b Eng again p pro ected by the camformation 9. when the V hooked memberis'retractcd. I I, 5 l/Yhile, I prefer,,i n allioases, togroov'e the I l fate of the hooked member ,of the needle for the reception of the spring tongue 13,,my- "Q0 in'veiltionjalso contemplates; thezuse of a spring tongue lying against the. innerface. I 'pf'said hooked. member, as showm-i'or in- I ",flstahce, at we" in Fig t); I. also prefer top operate the jack 5 by means of oams inthe '65 cam ring, but the movements of said jack in '13, which is secured tb or forms part of the respect to the hooked member of the needle may be due to the movements of the latter if L e sired, instances of such construction of the needle being represented in,Fig s. l0 .and 11.jlf1ach 'of the needles. shown in these figures hes a jack 5* provided with an elastic finger 17 for bearing against the walls of the needle tional' retar a'tion of the jack that it can only be moved by positive pressure exerted through the medium of the hooked member 4 of" the needle. This pressure may be exerted by means of properly placed lugs or bits 19 upon the hooked member as shown in Fig. 10, these lugs contacting alternately with the top and bottom'of thejack,to move effect the downward movement 'of said needle-"after" it has been 'sprun "outwardly by the cam-member 9-'of the same, the upbelng-efiectedby contact of a-lug bit 20 with the bottom of the jack.

stronger than the usual needle, slotted and drilledfor the'reception of a'la'tclij'and its tongue, can be as thin'as desired-,*the needle canbe'made for use in machinesofthe factors which serve to limit the"'s i'ze of an ordinary latch'necdler a As the necessary reciprocatingmovement of a needle'made in accordance witlim'y inventiomis less than that of a latch needle, the space occupied by the-ne'edle 'a'ctuating cams can be correspondingly'- reduced, and a machineof small diameter can 'be'eduipped with two "or more yarn feeds, where only one-such'feed'is now practicable; I elaim-z I 7 -1." A knitting machine needlehaving a shank with forwardly projectinghjookand a cam formation below'the 'san'ie,';'with a jack movable longitudinally "respect to the shank of the needle and normally lying close'to said shank, the forward fend of the jack, however, being elastic whereby when the jack is projected its forward end will be acted'upon by the cam formation of the needle shank 'a'nd'will'thereby be caused to follow an inclined path'so'that when fully projected it will overlap and contact with the-point of the'projecting needle."

2.-'A- knitting machine needle hifving a which is adjacent to the'hook, in"co'mbination with a spring jack movable longitudinally in respect to the shank of the needle ward movement of the jack an'd'its' tongue pivot pin, and, as the jack, with'its spring finestgage, being-free from the-determining A roove and causing such fricthe same at the proper times, or'the hook 6 may -oontactwith the upper endof thespring tongue'13 as shown iii 11, to a '85 -'tengue;-with the hooked member of the.

- ;Even whe'n the face of" the needle is .g'rooved, said needle is simpler, "cheaper and and normally lying snugly against the base In testimony whereof, I have signed my of the "groove but 'whenpmjected being actname to this specificatiomin the presence ed upon by the cmnfm-nmtiou at the end of of two subscribln witnesses. said groove and bemg thereby moved out- OBERT W. SCOTT.

wardly and caused to fulluw an inclined Witnesses: course so that when full; pro ected 1; W111 I Hmumox D. TURNER,

overlap the pointof the hook. KATE A. BEADLE.

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