US270276A - Thread-guide mechanism for knitting-machines - Google Patents

Description

'(No Mode1.)"

J. BRADLEY.

THREAD GUIDE MEGEANISM PoE KNITTING MACHINES. No. 270,276. Patented Jan. 9,1883..

wlw-NESSES: INV-:NTOR:

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To all whom, it may concern Y NiTEo STATES PATENT Erica.

JOHN BRADLEY, OF NORTH UHELMSFORD, MASSACHUSETTS.

'THREAD-GUDE MECHANISM FOR KNlTTlNG-NIAHINES.

SPECIFICATIQN forming part of Letters Patent No. 270,276, dated January 9, 1883,

Application filed April 19, 1882.

Beit known thatl,JoHN BRADLEY, of North Chelmsford, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Thread-Guide Mechanism for Knitting-Machines, of which the following is a specification.

Theobject of my invention is to provide a cheap, simple, convenient, eiiicient,and durable mechanism for guiding two threads of varying or different colors simultaneously and `to which my thread-guide mechanism is more particularly adapted. t

In order to actuate my device, a projecting beveled ge or incline-faced plate, B, is secured beneath the needle-cylimler, so that each revolution of the same shall bring the said strikerplate B into contact with the adjustable friction-roll C, provided near the outer projecting end ofthe horizontal spring-actuating arm D, pivoted at its inner or opposite end to the upper face ofthe cylinder or plate E. Said cylinder is connected with the frame of the mai chine, and is provided Vwith a journal-bearing at the lower end portion of the vertical stud or post F, and upon which journal theratchetwheel H is revolved by the intermittent movenient of the said actuating-arm D, which is provided with a spring-pawl, G, arranged toengage with the circumferential teeth of the said ratch et-wheel H, which is secured against movement backward or in the opposite direction by a spriug-pawl, I, arranged to engage with the said ratchet-wheel when thetsaid pawl G is disengaged, and caused to move back over its teeth by the action of the spring of the said (No model.)

actuating-arm D. To the upper surface of the n said ratchet-Wheel H is detachably connected one or more, cam-plates, J, provided with one to rise upward by the said cam-plates J, and" its opposite end is forced downward, carrying therewith the vertical connecting-rod N, pivoted thereto at its lower end, its upper end being pivoted to the thread-guide E, which is pivoted at its rear end to the arm O, extending horizontally from the said stud or post F near its upper end, and to the said arm O, near its outer end, is pivoted the thread-guidelt, its rear end beingpivoted to the said thread guide P at the point. The said vertical connecting-rod N is pivoted at the oppositeside thereof. The said lever K L, being provided at its pivotal bearing S on said stud orpost F with a coiled or suitable dat spring, holds the vertical end portion, K, ofthe said arm' L in contact with the upper surface of the said cam-plates J, said coiled or suitable fiat spring returning the end portion, K,iustantl vwithin the depressions or openings T, formed in said cam-plates, and'thus changes the positions'ot the threads passing through the eyes V V', formed through the guideplates P B near their ends, whichpass each other in arcs of circles, so as to convey one thread to the upper and the other to the lower section or'portion ot the loop-wheel U. Theishitting of the thread-guides? and R by the movement of the lever K L, actuated by the cam-plates J T and the coiled or suitable tlat spring, changes the color of the stripes by shifting the threads or carrying each to the l roo with differently-colored threads or yarns, which are passed simultaneously into the beards ot' the needles by the usual loop-Wheel or stitchwheel, U. The alternate and intermittent rising and falling of the thread-guides raises one thread above the otheralternately, each thread being retained in its elevated position during l which is drawn over the said threads and ot'f the needles in the usual manner. The differently-colored threads, being` thus made to alternately appear at the surface of the fabric during,` a definite number ot' revolutions of the needle cylinder, produce the horizontallystriped fabric, and since all the threads or yarns are invariably passed into the needles, no loose threads are carried on the fabric, and thesamesthereby rendered of a uniform texture.

Havingthus described my invention, what I claimis- 1. The combination, with the loop-wheel U and .thread-guide-supporting mechanism, ot the thread-guides P and It, pivoted to each other, and each pivoted independently to said supporting mechanism, as and for the purposes set forth.

2. The combination, with the loop-wheel U, ofthe thread-guides P and R and supporting means therefor, .the guides being pivoted to each other, and each pivoted independently to the supporting mechanism, the pivoted rod N, and actuating'mechanisnl for said rod, substantially as described, as and for the purposes set forth.

. JOHN BRADLEY. Witnesses: I

SYLVENUS WALKER,

J AMES G. DoRsEY.

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