US491117A

US491117A - Needle for knitting-machines

Info

Publication number: US491117A
Authority: US
Publication date: 1893-02-07
Anticipated expiration: 1910-02-07

Description

(lodeL) R. KIRKPATRICK. NEEDLE FOR KNITTING MACHINES;

Patented-Feb. 7,1893.

H L J WHOW 5 AJ w W i 10 MU UNITED STATES PATENT OFFICE.

ROGER KIRKPATRIcK, or PHILADELPHIA, PENNSYLVANIA.

NEEDLE FOR KNITTING-MACHINES.

SPECIFICATION forming part of Letters Fatent No. 491,117, dated February 7, 1893. Applieationfiled May 81, 1890. Renewed November 12, 1891. Again renewed July 6. 1892- Serial No. 439|1 (M05919 To all whom it may concern.-

.Be it known that I, ROGER KIRKPATRICK, a British subject, residing in the city of Phila= delphia, State of Pennsylvania, have invented a new and useful Improvement in Needles for Knitting-Machines, of which invention the 7 following is a specification.

mentioned, that the bringing of the bent nee- The object of my invention is so to construct the jacks of the bent needles, used with straight needles in machines of. the kind above dles into line with the straight needles after the introduction of the weft thread, preparatory to casting ofi, shall occasion little, if any, friction on the needle cylinder, or cam cylinder, while at the same time I am enabled to' use a crooked needle of uniform thickness 7 thickness from its latch to its jack.

In the annexed drawings, Figure l is a side elevation and Fig. 2 a front elevation of a straight needle with its latch, jack, and cam groove projection or crank; Fig. '3 a section of the same on the line 8 s of Fig. 1; Fig. 4 a side elevation and Fig. 5 a front elevation of a bent needle of uniform thickness provided with its latch, beveled jack, and cam groove projection or crank; Fig. 6 a section of the same on the line t t'of Fig. 4; Fig. 7 is a sectional elevation of parts of the needle cylinder and cam cylinder showing the relative positions of the straight needle jack and of the bent needle jack in the needle groove 1), when the two needles are elevated to form the ordinary open space n for the reception of the weft thread; Fig. 8 is a similar view showing the relative positions of the same parts when the needles have come into their most depressed positions preparatory to casting ofi; Fig. 9 is a front view of the straight and of the bent needles with their respective jacks, showing that these two needles with their jacks work in the same sized needle groove. Fig. 10 is a plan of a portion of the ring 0. attached to the top of the needle cylinder around the outside of the same.

a, represents a portion of a needle cylinder; 72 a jack race; b needle races; 0 a portlonof a cam=cylinder3 d a straight needle provlded with its latch a, jack f and crank g. All these parts are in the ordinary form.

it represents a bent needle provrded wlth the usual latch 41 and with its peculiarly constructed jack j and crank the upper front portion Z and the lowerback portion m of jack j being beveled off as shown 1n F1gs. 4, 7 and v tached to the outside of the needle cylinder at A at the top thereof.

b represents the needle races in ring a.

The bent needle being of the same t h1ckness as the straightneedle and of unlform thickness throughout from its latch to its junction with the jack and being free to oscillate in its race, the stitches formed on the bent needle are not stretched but are uniform in size with the stitches formed by the straight needle. When the needles rise to take the threads, the bent needlesmove backward thus forming the space between them and the straight needles for the weft thread. The

stitches cause the backward tip of the bent needles by holding the jacks of these needles against the backs of the grooves while the re spective bends or crooks are above the upper edge of the needle cylinder. In the descent of the bent needles when their backward bends come down to the upper edge of the mug a this ring acts as a cam and tips the bent needles forward to the extent of their bends and thus brings the bent needles into line with the. straight needles.-

I'claim:

1. A bent needle having a jack which is beveled off at its front upper and its diago nally opposite-or back lower portion substantially as and for the purposes set forth.

2. A bent needle having a jack which is its front upper and diagonally opposite or beveled off at itsfront upper and its diagoback lower portion and provided with a bev- 1o nally opposite or back lower. portion and proel'ed crank 70 substantially as and for the purvided With a beveled crank is substantially as pose set forth. 5 and for the purpose set forth. 4 ROGER KIRKPATRICK.

3. A bent needle uniform in thickness from Witnesses: its latch to its junction with the jack in com- 1 J. E. SHAW, bination with the jack which is beveled offat E. H. BAILEY.