Noise-reducing access cover and yarn guide for false-twist air jets
AssigneeHans Stahlecker
InventorFritz Stahlecker
Life of this patent
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Abstract
In the case of an arrangement for pneumatic false-twist spinning having air nozzles arranged behind a pair of drafting units, it is provided that the air nozzles lead into a space which is designed as a V-shaped groove which, together with a covering, is completed to form a yarn guiding duct which leads from the mouth of the air nozzles to a yarn outlet opening. The yarn guiding duct is provided with a cross-sectional enlargement in the area adjacent the air nozzle outlets to provide for uniform flow in the duct.
Claims22
An arrangement for pneumatic false-twist spinning of the type having a drafting unit and pneumatic false twist apparatus downstream of the drafting unit, said arrangement comprising:
- at least one air nozzle arranged downstream of a drafting unit for pneumatic twisting of a sliver,
- a holding plate including a recess for holding the at least one air nozzle,
- a yarn guiding groove arrangement formed in the plate and extending from the at least one air nozzle to a yarn outlet opening spaced from the at least one air nozzle,
- and a cover for the guiding groove arrangement which is sealingly engageable with the at least one air nozzle and extends to the yarn outlet opening, the cover being mounted for selective movement away from the at least one air nozzle to accommodate cleaning of the guiding groove arrangement in the plate, wherein the guiding groove arrangement has a cross-sectional enlargement adjacent an outlet of the at least one air nozzle.
An arrangement for pneumatic false-twist spinning of the type having a drafting unit and pneumatic false twist apparatus downstream of the drafting unit, said arrangement comprising:
- at least one air nozzle arranged downstream of a drafting unit,
- a guiding groove arrangement having a yarn outlet opening arranged downstream of the at least one air nozzle,
- and a cover for the guiding groove arrangement that can be swivelled away, wherein the guiding groove arrangement is designed as a groove which is completed by means of the closed cover to form a yarn guiding duct which leads from the at least one air nozzle to the yarn outlet opening, and
- wherein the guiding groove arrangement exhibits a cross-sectional enlargement adjacent an outlet of the at least one air nozzle.
Dependencies are inferred from the claim text.