US1499138A - Sinker mechanism for knitting machines - Google Patents

Description

June 24 1924.

E. U. AMES SINKER MECHANISM FOR KNITTING MACHINES Filed June 15 1922 Patented June 24, 1924.

'* NITED STATES PATENT oFFieE.

ELMER- U. AMES, PHILADELPHIA, PENNSYLVANIA, ASSIGNO'R TO H. BRINTON COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLF VAN IA.

SINKER MECHANISM FOR KNITTING MACHINES. I

Application filed June 15, 1922. Serial No. 568,480.

To all whom it may concern:

Be it known that I, ELMER U. AMEs, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented a Sinker Mechanism for Knitting Machines, of which the following is a specification.

One object of this invention is to provide a novel form of sinker for use in circular knitting machinesywhich shall have a novel outline or form particularly adapting it to be positively rocked by suitably placed cams, while at all times preventing the pos sibility of its bodily movement away from the cylinder.

A further object of the invention is to provide a novel combination of parts including unyielding sinker-retaining means preventing the sinkers being bodily pulled out of the cylinder, while at the same time retaining all of the advantages inherent in sinkers which rock.

Another object of my invention is to provide a novel combination of sinkers and cams for operatively rocking the same, in

which-said cams shall also act to retain the fulcrums of the sinkers in engagement with the cylinder in which they are mounted the invention more especially having to do with a form of sinker including a shoulder below its butt positioned to cooperate with the cams for the above purpose.

These objects and other advantageous ends I attain as hereinafter set forth, reference being had to the accompanying drawings, in which,

Fig. 1 is a fragmentary vertical section of a needle cylinder with certain of its associated parts, illustrating the sinkers con- I structed and mounted in accordance with 4 my invention; and

Fig. 2 is a perspective view of one of the sinkers on a scale, which like that of Fig. 1, is greatlyenlarged.

In the above drawings, 1 represents a portion of a needle cylinder with which is associated a sinker ring 2 and a sinker cam ring 3. The top edge of the cylinder is formed with vertically extending slots 1 while the upper part of the sinker ring vertical slots 5 respectively in the same planes as the slots 4, for the reception of sinkers 6.

Each of these sinkers consists, f a fl 2 is likewise formed with a second series of piece of sheet metal having a laterally pro- Wardly projecting butt 8, a shoulder 9 between said butt and the bottom edge, a nose 10 and a guide arm 11. The guide arm of each sinker extends into one of the slots 4, while the shoulder portion 9 of the sinker operates in one of the slots 5 in the same vertical plane ;-the ball 7 extending into an annular groove 12 formed in the outer surface of the needle cylinder 1. Between the nose 10 and guide arm 11 the upper part of the sinker is formed with a throat 13 and is rocked on its ball or fulcrum portion 7 by'a series of cams 14.-, of which the first is shown in section in Fig. 1;

It is particularly to be noted that each sinker is turned on its fulcrum throughout its path of movement by the positive action of the various cams and said cams are so mounted that by cooperation with the outer edge of the sinker and particularly that edge "of the shoulder 9 immediately under the butt 8, they effectually prevent the possible bodily movement of the sinker away from k the needle cylinder such as might allow of its ball 7 getting out of the annular groove 12.- As a consequence of this construction,

the operation of the sinkers is positive and can be accurately predetermined, it being a mechanical impossibility for their upper ends to fulcrum on the upper part of the needle cylinder with a consequent dislodge spite of its positive actuation of the sinkers they retain all of the advantages resulting from the fact that they are mounted to rock rather than move bodily.

I claim:

1. The combination in sinker mechanism of a needle cylinder; a sinker cam ring including a series of cams; and a series of rocking sinkers mounted in the cylinder, each having a butt whereby it is rocked by the cams and each also including a shoulder substantially normal to a radial line through the center of oscillation of the sinker and cooperating with the cams to prevent its bodily movement away from the cylinder.

2. The combination in sinker mechanism of a needle cylinder having an annular groove; a sinker cam ring including a series of cams and a series of sinkers each having a fulcrum portion extending into radial line through the center of oscillation of the sinker and cooperating with the cams to prevent bodily movement'away from the needle cylinder.

3. As a new article of manufacture a sinker having a projecting fulcrum portion and an oppositely projecting butt; with a guide arm and a' nose together defining a throat, said sinker having an angular shoulder below its butt substantially normal to a radialline through the center of said fulcrum portion.

ELMER U AMES.

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