US1050433A - Machine for uniting knit fabrics. - Google Patents

Description

E. 0.- D'Avls. A MACHINE POR UNIl'IlING KNIT PABEIGS.

, AZPPLIGATION Hrm) MAY 14;?191'0. 1,050,433,

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www fw Jn ne a D a e E. O. DAVIS. MAGHINB POR UNITING KNIT FABRICS.

APPLICATION FILED MAY 14, 1910. l

' Patented Jan.'14v,19x13.

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E. (Ll-DAVIS. MACHINE FOR UN'ITING -KNIT FABRICS.

APPLICATION FILED MAY 14,1910. l l

- v "Patented Jan.14,1913.

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WITNESSES.- NVENTR.

ATTORNEY.

` E. 0. DAVIS. MACHINE FOB. UNITING KNIT FABRICS.

APPLIQATIQN HLBD MAY 14, 1910.

Patented Jan. '14, 191,3.

4 SHEETS-MEET 4.

' an elastic seam or chain of stitches as in the like.

'movement or motion to the ring of impalionrran sans Aran rica.

EDWIN O. DAVIS, OF PADUCAH, KENTUCKY, ASSIGNOR TO SOUTHERN TEXTILE MA- CHINERY COMANAY, OF PADUCAH, KENTUCKY, A CORPORATION OF KENTUCKY.

MACHINE FOR UNITING KNIT FABRICS.

Specification of Letters Patent.

Patented-Jan. 14,1913.

To au whom t may concern Be it known that I, EDWIN O. DAVIS, a citizen of the United States, residing at Paducah, in the countyvof McCracken and State of Kentucky, have invented certain new and useful Improvements in Machines for Uniting Knit Fabrics, of which the following is a specification.

My invention relates to improvements in machines for uniting knit fabrics, the machine being adapted to unite or connect the meeting or selvage edges of two pieces or portions of knit fabrics by joining the loops of the adjacent edges thereof by means of production of hosiery, underwear, and the The invention relates to improvements on machines of this class of the general char acter described and claimed in my application tiled April 22, 1909, Serial No. 491,511, wherein mechanism is provided for imparting a continuously and uniformly revolving ing-pins, together with means for impart-ing a combined reciprocatory and lat-eral movement to the curved thread needle as the latter passes through the loops of fabric and above the impaling-pins, said lateral movement of the curved thread needle corresponding to the movement of th'e adjacent impaling-pins.

A still further object of the invention is to provide the necessary or required elasticity in the uniting seam or chain of stitches, this being secured by means of a stitch finger or stitclrcarrying guide-arm mounted above and extending in the dieet:- tion of the travel of the ring of impalingpins and adapted to coperate with the thread needle and thread carrying looper in the stitch forming operation so as to be included in a chain of uniformly formed stitches, and providing the necessary elasticity when the latterare withdrawn by the subjacent iinpaling-pins. l

A further object of the invention is to provide means for uniformly forming the stitches about said stitch finger notwithstanding variations in the tension of the looper thread by providing the necessary slack in said looper thread at or near the point of the formation of its loops about said stitch finger. and with this end in ,viewv I provide in addition to said stitchfinger I and thread needle and thread carrying" l the stitchI finger.

looper shown in my previous application above referred to, an intercepter member or'M intercepter-finger, said intercepter finger engaging the loop thread of the looper head just after the latter has engaged and isholding up the loop from the thread heedile and while the thread needle is being 'withdrawn from --tlie intervening stitch finger, said intercepter-inger continuing to hold the loop of the looper head while the latter asses forwardly and dropping or releasing it just before the initial retracting movement of the looper head and just 'after the thread loop of the latter is being engaged by the thread needle.

With the above mentioned and other ends in view, the invention consists in the novel construction, arrangement, and combination of parts, herein after described, illustrated in one of its embodiments in the accompanying drawings, and particularly pointed out in the appended claims.

Referring to the drawings, forming a part of this specification, Figure 1, is a top plan view of a machine constructed in accordance with this invention. Fig. 2, a side elevation of the same. Fig. 3, an enlarged plan view of a portion of the ring of impaling-pins showing the relative position of the parts while the reciprocatory intercepter-finger is engaging and holding the thread of the looper and the latter is in engagement with the loop from the needle in its forward position and prior to the initial forward movement of the thread needle. Fig. 4, a similar view of the intercepter-finger and looper in their retracted posit-ions and prior to the initial movement of the looper' to take up the loop from the thread needle. Fig. 5, a detail view of rthe improved looper member detached. Fig. 6, a similar view of the thread needle detached. Fig. 7, a detail perspective view of the stitch `forming parts just prior to the initial movement of the reciprocatory intercepter-finger to engage the thread of the looper as the latter is in the act of taking up the thread from the thread needle. Fig. 8, a similar view showing the intercepter-finger moved laterally and in engagement with the looper thread while the looper' is being moved toward its extreme forward position and the thread needle is being withdrawn from the off-set portion of Fig. 9,.:1y similar View Showing the position of the parts just prior to the initial forward nivement of tbe are n mean mt@ :and out o Ying motion to the ring of fad.

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ber 3Q, and a second arm Stb, provided with a lrietion roller 3o, adapted to engage the cani tace 96h, ot the camovheel 26.

By `reason ot the cam-tare 2(3, ot the eamivheel 2b, the oscillating member 3l, is operated whereby the head blo-ek 32, ivill be moved upon the bearing shaft 3?). and to and from the resistance oi a coil-spring surrounding the bearing shat't and interposed between the inner side of the heady block fl. and the side ot the supporting arm 2. B v reason ot this movement it is evident that a similar movement will be imparted lo the bearing heads 28a, on the bears ing shaft 29, so that as thc needle arm 28, is reciproeated. it will be moved laterally in its to and t'ro movements and thus carry the thread needle laterally while in'the loops of the fabric to correspond with the movement of the impaling-pins carried by the continuously rotating ring.

stitch carrying guide-member or stitchtinger 37. is pivotally mounted above the path of travel of the ring of impaling-pins by being mounted in a supporting member 38. movahly mounted in a bearing head ,39, ci a depending bracket 40, carried upon the guide-arm 31, interposed between the bearing heads 2%, ot' the laterally movable needle arm Q8. rlhe free end of the stitchfinger is provided with a slightly depressed pointed or tapered tongue portion 37, impinging upon a plurality of impaling-pins and adapted to be carried just above and in alinement With the adjacent loops of the fabric to be united as the latter arecarried under the tongue portion of the stitch-iin- The depressed tongue portion 3T, ot' the stitch-finger is held down by the action of a coil-spring 41, secured upon the rear projecting portion otl the stitch linger and carried upon a laterally extending bracket-arm 40, of the depending bracket t0. The depressed tongue portion 25T, of the stitch-finger terminates atits rear in an offset portion 37", at the rear of which the thread needle passes during its reciprocatory movements through the loops ot the fabric to be united and over and above each of the impaling-pins in the-loop and stitch forming operation as hereinafter described.

By reason of the above construction it will be. understood that the depressed tongue portion 37, ridesupon a series lor plurality uniting stitches of the latter and that the needle and looper move in paths on opposite sides, respectively, of the -'offset or shoulder portion 37", the initial stitches4 being formed over and about said shoulder ivherebysaid shoulder forms the zone of formation and said tapered tongue portion A59, may be adjusted by means the looper thread As a means for giving the thread carrying looper the necessary movements in the loop and stitch forming operation the looper can ringe and its actuating mechanism are mounted upon the bed-plate l, preferably, by means ot a supplementary bed-plate 42, provided with bearing standards 43, 44, and 45, and carrying a bracket 46, terminating in a work guide-member t?. The looper carringe member 48, lis provided at one end with a pivotally mounted laterally movable looper carrying member 49, .said looper carrying member being provided at its outer end with a thread carrying looper 50, and at its other or rear end with an upwardly extending and projecting friction bearing-pin 51. The looper carriage memn ber 48, is adapted to be reciprocated by means ot' a pivotally mounted oscillating member 52, mounted on the bearing standard 44, said oscillating member connected to a connecting linl: 53, said connecting link 53, being connected to a depending arm 5e, of a bell crank member pivotally mounted and connected to the bearing standard 43. As af meanstor oscillating the bell crank member the latter has its arm 54a provided with a friction roller 55, taking into and adapted to travel Within the cam-groove or guide-Way 26, ot' the cam-Wheel 26, asthe latter is revolved.

V-As a means for giving the thread carrying looper the necessary undulatory movement during its reciproca-tion in the stitch forming operation by the looper carriage mein ber 48, said carriage member 48, isprovided With a laterallyextending friction roller 56, extending into and a guide-slot. 57, of a supporting bracket 58, mounted upon the bearing standard 4:5. As a means for giving the looper the necessary' Alateral movements during its reciprocation by the carriage member 48, the upwardly extending bearing pin 5l, at the. rear end of the laterally movable looper carrying member 4,9,sis held into frietional engagement `with `a cam-faced 'cam-block 59, by.

means of a spring 60, fastened at one end to the pivotal bolt 61, of the laterally movable loopcr carrying member 49, said spring l30, bearing against the Jfriction bearing pin 51, for the purpose of maintaining the latter in contact `with th'e irregular tacos of the cam-block as the looper carriage member 48, is reciprocated. The!I position ot the eamblock ot adjusting screws 62, in the supporting bracket 58.

Asa means for providinr for uniformity in the formationo the stitches about the stitch efinger 37, notwithstanding variations in the tension of the looper thread, l provide a reeiprocatory intercepter-linger 63adapted to intercept oz engage and hold G4. near the point of formation about the offset portion 37", ot` the stitch-finger while the looper is in engage- 52, being A stitch forming mechanism com-v ocatory needle and thread procatory interd holding the d' looper While the latter is in oop from the needle gagement therewith agement with the prising a recipicarrying looper, and a reci cepter-iinger thread of sai engagement with the l and moving out ot' en when the latter is in eng thread of said looper.

8. In a machinefor um a ring ot impaling-pins, a stitch videdv with a pointed otlset porti ing above a plurality of said imp a reciprocatory threadneedle a pass underr said o-set portion, and a reciprocatory thread carrvi ating with said thread nee means -for reciprocati needle and looper, cepter-finger adapte into rengagementI wit looper While the latte wardly in engagemen t-he needle, and means engaging an ting knit fabrics,

ng looper coperdle and stitch linng said thread a reciprocatory inter d to be moved laterallyy h the thread oi said r is being moved `ort with the loop Jtrom for reciprocating said acliine for uniting knit fabrics,

plurality of imand a reciprocatii of a stitch carrying guide with a shoulder in close proxaths of said needle and looper ng 'in a vertically movable ted to ride upon a plung pins, the needle and ths on opposite sides, shoulder and said g the zone of formation the combination vwith a paling pins, needle and looper;

arm provided imity to the p and terminati tongue portion ada rality ot' said impa i looper moving in pa respectively, shoulder constitutin and said movable tongue forming the zone 11. in a machine for uniting knit abrics, a series of impaling pins, a reciprocating thread needle and'looperya vertically movable stitch carrying guide arm having a shoulder in close 'proximity to vthe paths 6o ot said needle and looper, said shoulder 'ter-v minating in a pointed tree end extending above a plurality of said impaling pins and adapted to ride p upon the loops Yof fabric to be united on said impaling pins, the needle and looper moving in paths in oposite sides, respectively, of said shoulder and said shoulder constituting the zone of stitch formation and said pointed tree end the zone of retreat for the stitches as formed by said recipro eating. thread needle and looper.

12. ln a machine for uniting knit fabrics, the combination with a plurality of impaling pinsand a reciprocating thread needle and thread carrying looper;V of a stitch car- 75 rying guide arm pivotally mounted above the path' otx travel of the impaling pins and provided with a shoulder bet-Ween the paths of travel of said needle and looper, -said shoulder constituting the zone of stitch tormation and terminating in a tapered tongue portion infrictional engagement with aplurality of said impaling pins and adapted to be carried above the adJacent loops of fab# ric to lbe united as the latter are carried under said tongue portion, said tongue portion forming the zone ot retreat for the chain of stitches.

13. ln ar machine for uniting knit fabrics,

the combination with a continuously revolving ring of impaling-pins, and a laterally movable oscillating arm carrying a reciprocating curved thread needle passing above each of said impaling-pins; of a drivingy of retreatI for the stitches as forme hread needle and looper.

hine for uniting knit fabrics, t impaling pins,

above the pe ns and provided with a g in a depressed tapered ride upon a plusaid impaling ead needle and reciprocating t 10. In a mac a plurality o pivotally mounted of said impaling pi shoulder terminatm tongue portion adaptedvto rality of loops carried b and a reciprocating tir ted to sucesively pas d stitch inger at the base of a stitch linger th o 'travel ooper adap shaft provided with a laterallyv movable connecting member adapted to reciprocate said thread needle, and a cam body operatively connected to said laterally movable osc1liating arm whereby said thread needle is carriedv laterali during its reciprocatory movements in t e loops to .correspond tvitn the movements of the latter as carried'by said impaling-pins.

In testimony whereof I have aiixed my a signature, in presence of two Witnesses.

and over sai said tapered t stitches over an by said shoulder tion and seid tapered tongue 55 the zone oit retreat for the stitches.

ongue portion to form the d about said shoulder Whereorms the zone of formaportion forms unvvru o. Davis.

'Witnessesz 0. C. BILLMAN, SAM Brasilien.

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