US903190A - Needle-cylinder and operative mechanism for needles of circular-knitting machines. - Google Patents

Description

H. A. HOUSEMAN. NEEDLE CYLINDER AND OPERATIVE MEGHANISM FOB NEEDLES 0F CIRCULAR KNITTING MACHINES.

APPLIOATION FILED MAY 22, 1907. nnn'nwnn SEPT. 10, 1908.

903, 190. E Patented Nov. 10, 1908.

W/r/vEssEs: INVENTOR l W A a ATTORNEYS.

HARRY A. HOUSEMAN, OFTHILADELPHI'A, PENNSYLVANIA, ASSIGNOR TO STANDARD MACHINE COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION SYLVANIA.-

NEEDLE-bYLINDEB AND OPEBATIVE MECHANISM KNITTING MACHINES.

OF PENN- FOB mmn'mso'r cram.

and useful Improvement in'Needle-Cylintiers and Operative Mechanism for Needles of Circular-Knitting Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a partof thisspecification. V

In circular knitting machines, heretofore, as,, for instance, in Letters Patent No. 4,787. issued to me October 18th, 1892, le-

ers have been combined with needles, in.sl0ts .formed in the outer periphery of the needle cylinder. Certain disadvantages arise from this combination.

hlvinvention has for its. object, certain combinations whereby these disadvantages may be avoided and positive advantages obtained.

The invention consists in combining, with a needle cylinder having slots therein, preferably tapered, extending from the inner periphery outwards, in which slots are the needles, pivoted levers provided with jaws adapted to hold the shanks of the'needles and, in suchconstruction, with a knitting am cylinder within said needle cylinder.

I will now describe the-embodimentof my invention illustrated in the. accompanying drawings.

In the drz-nvings: Figure 1 is a partial plan view of my improved needle cylinder. Fig. 2 is a vertical section through the knitting'head showing the needles in and out of action.

a is the needle cylinder.

1) b, etc., are tapered radial slots in the needle cylinder, extending from the inner periphery out 'ards.

c arethe needles.

(Z dare pivoted levers, the jaws c of which hold the shanks of the needles.

is the cam cylinder.

My invention-has many advantages overthe combination of lovers with needles in slots in the outer periphery of the needle cylinder. Amongsuch advantages may be stated: In the prioncornbination whenthe needle is moved out ofactio'n it moves in at Specification of Letters Patent. Application filed May 22, 1907, Serial No. 375,024. Renewed September 10,

active needle next of the lever travels away friction. Finally,

Patented Nov. 10, 1908. 1908. 8crla1No.452,4 52.

the bottom and where the needle rests a ainst the needle cylinder, acting as a fulci um, the'hook of the needle moves outward, i. 6., toward the yarn carrierand has a tendency to strike it. This is detrimental to good knitting,

yarn away or out of alinement with the to this inactive needle: This necessitates a fine adjustment of; the yarn carrier. In the present combination the needle moves in the opposite direction, the point where it rests on the needle cylinder acting as a fulcrum, the hook of the neodle, if anything, is thrown away from the yarn carrier and carries the'yarn which is held around the inactive needle into the hook of the active needle next to it. In the prior combination the needle moves toward the yarn carrier and thus carries the stitches which are alreadymade toward the sinkers.

\Vhen the needle is out of action the sinkers place a strain upon'the stitch, and it requires a close adjustment to prevent cutting thereby. In the present, combinat on the needles moving in the opposite direction carry the stitch away from the sinkers so that no strain is placed on the"same'. Further, in the prior combination,

' from theneedle and is made of peculiar shape to maintain operative connection. This requires a very fine adjustment. In the present combination this is not required, as the shoulder of the lever and the end of the needle work to wards each other and come together without the motion of the needle lever is, i n -'the present combination, less than in the prior combination, and therefore a fine adjustment of needle lever c'am's is done away with.

Having now fully described my invention,

what I claim and desire to protect by Let-- ters Patent is:

the shoulder 1. In a circular knitting machine, in coina needle cylinder Ehavmg slots therein extending from the inner eriphery outwards, needles in said slots an pivot levers provided with 'jaws adapted to hold the shanks of said needles.

.2. In a circular knitting. machine, in combinatio'n, a needle cylinder having slots therein extending from the inner. periphery outwards, needles in said'slots, pivoted le-.

bination,

, vers provided with shanks of said nee cylinder within said 3; In 'a circular kn 'ation, aneedle c slots therein, exten i 10 0 e blnat slots bin hold

jaws adapted to es and a knit needle cylin'd itting mach m the Inner the shanks of said 4. In a circular lmitti ion, a' needle cylind therein, extending g machine, in c0m- Witnesses:

having tapered M. M. HAMILTON, mthe inner pe- A. Unmmhold the riphery' outward; needles in said slots, pivting'catnoted levers provided with jaws adapted to hold the shanks of said needles-end a knitine, in comting cam cylinder within said needle cylhaving tapered inder. v p 4 pe- In testimony of which invention, 1' have HARRY A. 'HOIITSEMANT

Images