US1825746A - Knitting machine - Google Patents

Description

Oct. 6, 1931. F. I sslG KNITTING MACHINE Filed Jan. 29. 1930 2 Sheets-Sheet 1 Oct. 6, 1931. F. LsslG KNITTING MACHINE 2 Sheets-Sheet 2 Filed Jan. 29, 1950 Patented Oct. 6, 1931 UNITED STATES NPATENT" orf-ICE FRITZ Lssrs, on CHEMNITZ, GERMANY, AssIeNon To THE Eran SCHUBERT a ssLzEn IIASCHINENEABRIKYAKTIENGESELLSCITAET, or CHEMNITZ, GERMANY KNITTING Application led January 29, 1930; Serial No My invention relates to hosier machines and more es ially to fiat knittlng frames.

It is an ob ect of my invention to eliminate in these mac es friction between the needle and the presser head.

' To this endl I provide a movable presser head'and means for moving the head and the needle bar at the same velocity and in. the same direction while the presser bar is in contact with the needles.

My invention offers important advantages with respect to the pressing and landing of the loops as compared with the existing machines. Heretofore the needle and the presser head were displaced with respect to each other while in contact, the closed needle head slidingl along the presser head during v presser head frame 3 1s itted to reciprocate the landing of the loop.

According to my invention the needle and the presser head are moved in the same direction until they are separated during knocking-over. By these means friction between the needle and the presser head is eliminated altogether, preventingdamage to tlie needle and to the presser head. ar-

'ticularly, breaking of the needle head arid seizing of the needle head in the presser head are avoided. As friction is eliminated the speed of the machine may be Igreatly increased as heating of the needles and the presser cannot now occur.

. In the drawings ailixed to this specification and forming part thereof a machine embodying my invention is illustrated diagrammatically by way of example.

1n the drawings Fig. 1 is a, sectional elevation of the complete machine,

Fig. 2 is a sectional elevation of the knitting frame of the machine drawn to a larger scale,

U4Figs. 3 and 4 illustrate tworelative positions of the presser head and the needle, and

Fi 5 is adetail showing a rail for guiding t e presser head. Referring now to the drawings and first to" Fig. l, 13 is the frame vof the machine, 14 is, the` main driving shaft which is mounted to rotate in the `frame, 15 is a'I cam plate with M ACHINE 424,304, and in Germany February 5, 1929.

shaft 14, 6 is a rocking leverfor operating the presser head 1, 17 is a roller at the lower end of the lever 6, and 17 is a spring which' is anchored `at asuitable point of the frame and with its free end is attached to the lower end of the lever 6 soas to hold the roller 17 permanently engaged with the cam plate 15.

The lever 6 is ke' ed on a shaft 4. 5 is a lever which is also eyed on the shaft 4 and serves forreciprocating the frame 3 of the presser head 1. The presser head 1 is divided or comb-shaped in the usual manner for cooperation with the jack sinkers 10`and vthe knock-over jacks 11. 18 is a pin at the` lower end of the frame 3 which is engaged .by a slotted eye 19 i:,ithe end of the lever 5.1

12 is the knitting frame on which the 9 is the Iieedle bar `with the needles 8.

The needle bar is connected with the usual frame 20 Awhich is fitted to rock abo/utv a pivot 21 while it is reciprocated vertically.

For sinking the parts are in the position illustrated in Fi 2. The presser plates 1 have been raise between the knock-over ,fjacks to within reach of the sinkers 10, while tleir rear faces slide on the rail 7.

Referring now to Fig. 3, the needle. bar 9 with the needles 8 is lowered, while the presser plate 1 still is in the position illustrated in Fig. 2, closing the needle heads. When the needle bar 9 is lowered further for landing the ldops, the lever 6'is rocked 'by the cam 16 and the lever 5 moves down the frame 3 at the same velocity as the needle barf9, so that the presser plates 1 and the needle bar 9 descend in unison and at no a single elevation 16,'which iskeyed on the the same ve1ocity,\withoitfriction. When' the needles have completed their descent they are moved to the right from the osition in Fig. 4 for knocking over, an( are separated from the presser plates 1 which now are returned into the initial position, F ig. 2, by the lever 5. After the looping operation has been completed the needles 8 are also returned into the initial position, Fig. 2.

It will be understood that frictonal contact between the needles 8 and the presser plates l occurs only on the comparatively short distance required for closing the needle heads. Otherwise the needles and the presser plate either move in unison or are separated.

I wish it to be understood that I do not desirel to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art.

In the claim ailixed to this specification no selection of any particular modification of the invention is intended to the exclusion of other modifications thereof and the right to subsequently make claim to any niodication not covered by this claim is expressly reserved.

A flat hosiery machine comprising a presser-head frame, a needle bar, needles in said bar, sinkers adapted to cooperate with said means, a divided presser plate in said frame for each needle and means for moving said frame and said needle bar at the same velocity and in the same direction while the members of said divided presser plate are in contact with their respective needles.

In testimony whereof I atlix my signature.

FRITZ LSSIG.

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