US2381370A - Part for knitting machines - Google Patents

Description

Aug. 7, 1945. DE HART G. SCRANTOM 3 3 PART FOR KNITTING MACHINES Filed Aug. 25, 1945 BY a?" v I I Patented Aug. 7, 1945 1 NITED STATES PATENT OFFICE PART FOR KNITTING MACHINES De Hart G. Scrantom, Maplewood, N. .1., assignor to Western Electric Company, Incorporated, New York, N. Y., a corporation of New York Application August 25, 1943, Serial No. 499,878

, 7 Claims. (Cl. 66-116) This invention relates to parts for knitting machines and has for its object the provision of new and improved parts for knitting machines.

In knitting machines, jacks which hold knitting needles and raise and lower the needles are provided with needle-receiving slots. In jacks heretofore known, these slots and needles held thereby become worn after they have been in use for some time, thereby permitting movement between the needles and the jacks, which often causes the needles to strike the thread guide and become broken.

One structure embodying the invention comprises a jack having a notch formed therein for receiving a nib on a knitting needle to resiliently hold the needle and also provided with an elongated slot connecting with the notch which gives the lips of the notch suflicient resiliency to engage the nib at all times and hold the needle firmly in place.

Other objects and features of the invention will become apparent from the following detailed description when read in conjunction with the drawing, in which Fig. 1 is a fragmentary side view in partial section of one embodiment of the invention;

Fig. 2 is a sectional view of the apparatus taken along the line 22 in Fig. 1, and

Fig. 3 is a fragmentary side view in partial section of an alternative embodiment of the invention.

In accordance with one embodiment of the invention, a. Jack has a notch l formed in one s end thereof[ The jack is also provided with an elongated slot 12 extending inwardly from the notch 11 terminating in a circular aperture 13. Jaws l4 and 15 formed upon the end of the jack 10 by the notch II are resiliently movable with respect to each other by reason of the slot I2 and the aperture 13. Except for the above described features. the jack ID is of conventionaldesign.

A needle 16 of conventional design having a nib l8 also of conventional design formed thereon, is slidably mounted in the usual manner in a slot 19 formed in a block 20 comprising a part of aknitting machine. Surface 21 and 22 formed on the jaws l4 and 15,.respectively, are complementary to and bear against surfaces 24 and 25 formed on the nib IB-when the latter is positioned thercbetween.

After the jaws l4 and 15 have been drawn apart and the nib l8 inserted therebetween, the

shown) to cause the needle to engage and disengage a strand to form a knitted fabric in accordance with the usual operation of knitting machines.

In an alternative embodiment of the invention,

which is shown in Fig. 3 of the drawing, a reciprocating jack 40 has formed therein an L- shaped notch 41 and an elongated slot 42 con-' nected with the notch 41 and a circular aperture 43 to form jaws 44 and 45 thereon. The jack 40 is similar to the jack H1 except for the configuration of the notch 41 and the jaws 44 and 45.

A needle 46 having an L-shaped nib 41, which includes a projection 48, formed on the lower end thereof, is similar to the needle l5 except for the nib 41 and is reciprocably mounted in a slot 49 formed in a block 50. The block 50 and the slot 49 formed therein are of conventional design and are similar'to the slot 19 and'the block 20. The jaws 44 and 45 have surfaces 52 and 53 formed thereon which are complementary to surfaces 54 and 55 formed on the nib 41.

In assembling the needle 46 and the jack 40,

the jaws 44 and 45 are opened sufficiently to in-.

sert the nib 41 into the notch 41 and the jaws 44 and 45 are released to firmly and resiliently grip the nib 41 with the surfaces 52 and 53 of the jaws bearing against the surfaces 54 and 55 of the nib 41, thereby preventing play between the needle and the jack. If the needle 46 should be twisted during the knitting operation, projection 48 strikes the jaw 44 and prevents the nib 41 from being twisted out of the notch 41. If.the

jaw 44 and 45 or the nib 41 become worn, the resiliency of the jaws will nevertheless cause the jaws to firmly grasp the nib 41 and prevent relative movement therebetween, and thereby prevent breakage of the needle.

It will be readily seen that the constructions ting needle, which comprises an arm having an orthogonal notch formed in one end thereof to form a, pair of jaws having straight gripping surfaces for gripping a straight surfaced nib of a knitting needle, and also being provided with an elongated slot Connecting with the notch to give the jaws sufilcient resilience to firmly grip the nib.

2. A jack for holding a nib of a knitting needle, which comprises an arm having an oblong notch formed in the end thereof to form jaws for grasping a nib of a knitting needle positioned in said notch and. also provided with an elongated slot to give the jaws resiliency, said jaws having surfaces formed thereon complementary to surfaces formed on the nib.

3. A jack for holding a nib of a knitting needle, which comprises an arm having an L-shaped notch formed therein to form a pair of jaws for clamping an L-shaped nib of a knitting needle positioned in said notch, and also provided with an elongated slot connected with said notch to provide the jaws with sufficient resilience to firmly grasp the nib therebetween.

4. A jack for holding knitting needles, which comprises an arm having an L-shaped notch formed therein to form a pair of jaws for clamping an L-shaped-nib of a knitting needle therebetween, the base of said L-shaped notch fitting closely around the end of the nib so as to prevent longitudinal twisting of the needle with'respect to the jaws.

- 5. In a knitting machine, the combination of a knitting needle comprising a shank having an L-shaped nib formed thereon, and a jack having an arm formed thereon, said arm having an L- shaped notch formed therein to form a pair of jaws complementary to said L-shaped nib for holding the nib and for preventing longitudinal twisting of the needle with respect to the jaws.

6. In a knitting machine, the combination of a knitting needle comprising a shank having an L-shaped nib formed on one end thereof, and a jack comprising an arm having an L-shaped notch formed in the end thereof for receiving the nib of the knitting needle and having an elongated slot therein connected with said notch to cause the sides of the notch to resiliently engage said nib.

7. A jack for holding nibs of knitting needles, which comprises an arm having a notch therein forming a pair of jaws, said notch having straight sides at the mouth thereof .to provide straight gripping surfaces at the ends of the jaws, said arm also being provided with a slot extending from the notch to give the jaws resiliency.

DE HART G. SCRANTOM.

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