US1677219A - Stocking frame - Google Patents

Description

Juli 17, 1928.

H. SUSSMANN STOCKING FRAME Filed July 12, 1926 Patented July 17, 1928.

HUGO SUSSMANN, OF CHEMNITZ, GERMANY.

STOCKING FRAME.

Application led July 12, 1926, Serial No. 121,984, and in Germany .Tune 8, 1926.

W'hen coarse yarn is employed alternately with fine yarn on a stocking frame, it is necessary to provide means for adjusting the operating elements for the needle bai' so as to'prevent the mesh from being too loose in the case of the ne yarn and too Atight in the case of the coarse yarn.

The object of the invention is to provide a regulating device of this kind which operates automatically, and the invention consists in the provision on the main shaft of two operating cams, one for use with coarse and one for use with fine yarn, and of two rollers arranged on the operating lever so that they can be shifted axially for putting either roller into cooperative engagement with its cam, means being provided for effecting such shifting automatically.

Fig. 1 of the accompanying drawings represents a front view of the device as used on a machine of the Cotton type,

Fig. 2, a top view of part of the same, and

Fig. 3, a side View of the parts shown in Fi 2.

r1lrhe main shaft 5 of the stocking frame is fitted with two operating cams 6 and 7 which co-operate with rollers 2 and 3 respectively, held by a forked lever 4. The latter is keyed to the rock shaft 8 which operates the needle bar in known manner and controls its position relative to the sinkers by way 'of regulating the size of the loops. A spring 9 tends to hold the rollers in contact with the cams. The supporting shaft 1 for the rollers has an eccentric portion on which the roller 3 is held so that the position of the latter can be regulated. This is effected by means of a spur wheel 10. The rollers are spaced differently from the cams so that only one roller at a time can be in engagement with its cam. The change-over is effected by an axial adjustment of the rollers for which purpose a fork 19 is arranged so as to engage the roller 3. The fork 19 is mounted on a slidable rod 20 which is spring-actuated Aso as to hold the` rests against an endless travelling chain or band 11 fitted at intervals with studs which rock the bell-crank. A spring 17 controls the position of the rod 16 in the sleeve 15.

The chain 11 is moved by the machine and allows the roller 2 normally, i. e.. while tine yarn is being worked in the machine, to be in engagement with its cam 6. Simultaneously with the introduction of the coarse yarn, the bell-crank 13 is rocked by the studs on tliechain 11 so as to tension the spring 17. As soon as the crest of the cam 7 has turned clear of the roller 3, both rollers will be shifted by the spring 17 so as to put the elements 3 and 7 into and the'elements 2 and 6 out of operation. The cam 7 widens the loops by bringing the needle bar closer to the sinkers. When'- the bell-crank is released by the studs, the elements return to the normal position for Working fine yarn.

By this arrangement uniform elasticity of the fabric will be effectively ensured.

I claim:

In a mesh-regulating device for stocking frames, the combination With the main shaft and with a lever for operating the needle bar, of two cams mounted on said main shaft, axially adjustable rollers held by said lever for cooperation with the cams, the rollers being spaced differently from the cams so that axial adjustment is required for throwing each roller into engagement with its cam, means whereby such adjustment of the rollers can be effected automatically by the machine, and a shaft having an eccentric portion whereon one of said rollers is so supported on the lever that its posi tion can be regulated by a rotary adjustment of said latter shaft.

HUGO SUSSMANN.

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