US1534972A - Needle-operating mechanism for knitting machines - Google Patents

Description

Apl il 21, "1925.

A. LEVITQN ET AL NEEDLE OPERATING MECHANISM FOR KNITTING MACHINES Filed Jan. 21, 2 3 sheets -sh et l INVENTORE v ATTORNEY3 A ril 21, 19231 A. LEVIT O'N 51'- AL NEEDLE OPERATING MECHANISM FOR KNITTING MACHINES and J n 1, 1925 f 3'Sheets-SHiet" 2 INVENTQRS Km F v. \&

. 1 2 1. 1 314.13 PJZE 5. E; file 'WITNESSES &

- ATroRm-n's April 21, 1925. I 1,534,972

, A. LEVITON ET Al.

NEEDLE OPERATING MECHANISM FOR KNITTING MACHINES Filed J n. 21, 2 3 Sheets-Sheet 5 g7hl5l &

ATTORNEYS York, borough of Brooklyn,

is a full, clear, and exact signification filed January $21, 1925. serial lilo. secs.

To all whom it may concei'n:

Be it known that We, AnoLis-H LEVI'ION and WILLIAM KAPLAN, citizens of the United States, and residents of the city of New in the county of Kings and State of New York, United Stetes of America, have inventede new and improved Needle-Operating Mechanism for 'Knitting'llllechines, of which the following description.

This invention relates to needle operating mechanism for knitting machines.

Hitherto in carrying out knitting opens tions for both plain and fancy Work, an

extra. needle bed as Well as an extra set of blenk needles and a set of spring jacks were einnlo ed. Such aisengement involves consideraoleextra expense, and has been found tobe impnncticel for rapid operation with e view to the-obtainment of a possible maximum output.

@ne of the objects of the presentinvention therefore is to reduce costs involved in incorporating certain. features in e knitting 2 machine for performing plain and fancy U Work, While at the same time maximizing the ont pnt oi" the machine.

Another object of the invention is to provide novel means in a knitting machine for carrying out needle operations ,resulting in fency Work.

dnotheir object of the invention is to provide an arrangement of locks suitable for use in the production of fancy work, which locks, in the forward and return movements of "the carriage which supports them, successively reciprocates the needles and 1e turns their related jacks to normal positions respectively for further action thereon by the usual jacquei'ding mechanism.

Gther objects of the invention will appear as the following specification is read in connection with the accompanying drawings, in Which A Figure 1 isa transverse sectional view on line 11 of Figure 2 through a portion of a knitting machine and showing the combination of elements employed in the applicm tion of the present invention.

v Fig; 2 is an inside View of the reciproeating carriage and locks.

Fig. 3 isa. sectional view taken on the line 3-3 of Fig. 2 looking in the direction indicated by the arrows, and showing in dot and dash lines the relative position of" the needle and jack bed.

and jack bed Fig. 4 is a fragmentary plen oi the needle and showingthe jack con.- trolling means.

Fig. 5 is a diagrammatic view illustrating the locks in forward travel end the different stages of needle and jack movement.

Fig. 6 is a view similar to 5, hot illustrating-the locks in return travel. and the olifi'erent stages of needle and inch move ment.

Fig. 7 is a detail view showing the relative change in position of one of the loclzs and a portion oi the needle arresting mesns.

Fig. 8 is a detached perspective view of e. modified form of needle arrest/er.

Fig. 9 is a detail sectional view illustratingthe application and function of the modified form ofei'iester shown in Fig. 8.

The Present invention in its application comprises a needle bar or bed 10, needles 11 and jacks 12 movably snpported in pairs respectively in grooves in the bed 10, e

reciprocating carriage 13 which carries the cams commonly known in the trade as locks, and a pattern or jecquei'ding mechanism 14 which serves to selectively and initially lift the jacks accordin to the fancy attern desired. Each of t e needles 11 me udes a butt 15 and a tail 16. Each of the jacks hes a head 17, butt 18 and tail 19. The needles 11 are freely movable and are limited in their downward movement by a stop'QO in the nature of a Wire which extends longitudinally of the bed. 10. Means 21 in the nature of a convolutc spring extending. longitudinally of the bed 10 and attached to the bed at its opposite ends serves for frictionally controlling the jacks 12 to hold the some in vdifi'ercnt positions to Which they are moved. The use of such a spring providcs yieldable portions 22 in contact with each ]21Cl at opposite sides thereof. The inactive normal relationship of each pair of needles and jacks is one'in which the head 17 of each jack is spaced from the tail 16 of each needle. The mechanism 14 may be of any preferfed type and serves for imparting to particular jacks 12 an initial movement to positions in the path of travel of parts of the mechanismto be described.

In order that the stitching or knitting operations of the needles resulting in fancy work may be carried out after the jacks have been. selectively and initially lifted by the 46 which has a cam and a cam facefiil. is arried at the free end of the post 56.

tion with the butts of the jacks and needles included in the mechanism. A plate 23 is attached as at 24 to the carriage 13 and the said plate carries locks 25,126 and 27. The locks 25 and 27 are identical and each has a. cam face 28 and cam face 29. The lock 26 is arranged between the locks 25 and 27 and has a cam ,face 30 which merges with the cam faces 29 of the locks 25 and 27. Each of the locks 25 and 27 has a guide block 31 movable in a slot 32 in the plate 23, and a post 33 on the block 31 wh ich extends through a slot in the supporting part 34 of the carriage and has alclalnping device 35 applied thereto for effecting adjustment of the related look. A stitch changing device 36 is adjustably carried by the part 34 and includes an assemblage of locks '87, 38, 39 and 40 which extend through an open ing 41 in the plate 23 in coa'ctive relationship with the locks 25, 26 and 27. The lock 37 has a cam face 42 which conforms to the cam face 30 of the lock 26 adjacent-to which it disposed in spaced relationship to provide a way 43. The locks 25, 26, 27 and 37 may be aptly called the needle looks. The lock 38 is arranged below the lock 37 in spaced relationship and has cam faces 44 and 45. The locks 39 and 40 are arranged between the locks 37 and 38 to be moved into and out of the space between thelocks 37 and 38 according to whether plain stitching or fancy stitching is desired; the 1ocks 3!) and 40 being moved into the space when plain stitching is desired and out of the space when fancy stitching is desired. The" movement of the 1ocks39 and 40 is accomplished by manipulating a slidable member portion 47 coacting with a cam portion 48 on a plate 49 which carries the loclcssfif) and 4.0. Pins 50 on the plate- -ii) are disposedrespectively in openings in a wall 51 of the [102152 of device 36. The

use of the pins 50 makes rovision for the. slidabic mounting of the .ocks 39 and 40. The wall 51 carries posts 53 which ektend tln'ough the part- 3-1 of the carriage and each marries at its true cud an adjusting device 54. A jach-rctm'n-locl; 55 is yieldingly mounted on the part 34 by virtue of a post as and spring 57 which surrounds the 'post in; and is disposed between the part 34 and the lock itself; the said lock extends through the plate 253 and has a canifface 58 i d An adjusting device 60 livolally mounted spring-actuateddevices 161 are carried by the plate 23 juxtaposed respectivelywith respect to the needlc locks.

lflach device til has a cam .62 normally dis- (posed in thcwa y 425 in advance of'thc junctih'c between portions of the and 27 respectively. .llcfc-rring now to-.li.ig. 5 of the drawings will he set-n that there has been shown locks. 25, 26,

nuiedlcs to be reciprocated.

a series of needles 11 and a series of jacks 12 and the said needles and jacks are shown in different positions and stages of movement in accordance with the operation of the mechanism. The jack indicated by the reference character a has been lifted by the means 14 so that its head 17 abuts the t ail 19 of its related needle A and with its butt 18 in thepath of the lock 38. .It is to be understood that in making .fan-cy stitches one or a plurality of jacks are lifted to pre sent their butts 18 to the action of the lock 38. The cam face 44 in the forward movement of the carriage coactively engages the butt -18 to lift the jack or jacks to impart movement to its or their related needles, which bringsthe butt 15 of the needle in a position to be acted upon by the cam faces of the assemblage of needle locks. This latter action is indicated by the jacks b and needles B. The cam 62 of the device (31. prevents too rapid movementof the needles by virtue of the butt of the needle coming into contact therewith and causing a pivot al movement of the device 61 and allowing the needle to pass smoothly along the way 43 for reciprocation of the needle. The jacks are brought down to the positions to which they have been lifted by the means 14, as indicated by the jack d, with its re lated needle D in contacting relationship.

Upon the return movement of the carriage 13 the reciprocation of theneedles is repeated. In the forward movement of the carriage the butts 18 of the initially lifted jacks ride over the cam face 58 of the lock 55 which yields. Upon the return movement of the carriage the butts 18 of the jacks are acted upon by the cam face 59 of the lock 55 thus causing the jacks to move downto their normal positions respectively.- The needles D and jacks '(Z are those which are left in positions to be acted upon on the return of the carriage 13. The

needles G and jacks g are those not brought.

into play for the fancy stitching operation. The jacks are those which indicate the action of the lock 55 in which it yields.

Figure 6 illustrates the different positions and movements of the needles and jacks during the return movement of the carriage 13. The action of the locks being.

substantially the same as when the carriage moves in a forward direction, except that the lock 55 .comes into play; its cam face 59 coa-cting with the butts 18 of the jacks indicatedat f to cause them to move to their original positions to be acted upon. again by the means 14.

F or doing plain stitching the locks 39 and 40 are moved into the space between the locks 37 and 38 which causes all of the \Vhen the locks 39 and 40 are moved into the space between l'hclocks 37 and 38 each moves 'its adjacent cam 62 to the position shown in dotted lines in Fig. 7 As stated, the action of the cams 62 is to somewhat arrest the speed of the needles to prevent them from sticking or becoming lodged, and. said camsalso permit the needles to readily pass out of the way 43 due to the manner in which the respective devices 61 are mounted.

In Figs. 8 and 9 a modified form of the acter described, a set of needles, a set of jacks co-operable with the needles, a single lock assembly adjustable for both plain and fancy stitching and including a needlelock having an upper section always operable on r the operating needles when knitting and also having shiftable lower sections positionable to constitute a part of the needle lock when plain stitching is being efl'ected and shiftable toan inoperative position and out of the path of the needles to provide a clearance to permit certain of the needles to idle when fancy stitching is effected, a shiftable jacklock shiftable to an operative position when fancy stitching isefi'ected and shiftable to an inoperative position when plain stitching is being effected, and jacquard mechanism for elevating the selected jacks sufficiently to permit the selected jacks to engage the jack lock when the jack lock is in an operative position. a e

'2. In a knitting machine, a set of jacks, means for I'novably supporting the jacks, and a coil spring having its convolutionsfrictionally engaged with the jacks, each jack being received between and engaged by adjacent convolutions of the coil spring. 3. In a knitting machine, a set of jacks, means for movably supporting the jacks, and a coil spring having its ends fixed to said means and having its convolutions frictionally engaged with the jacks for yieldably. holding the jacks in the different positions to w ich they are moved.

ADoLPIr LEVITON. WILLIAM KAPLAN.

Images