Yarn piecing and knotting device for pneumatic spinning apparatus
AssigneeMurata Kikai Kabushiki Kaisha
InventorsHiroshi Uchida, Kunio Umeda, Zenpei Tachibana, Nobunori Kubota
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Abstract
A yarn piecing and knotting device for use in a pneumatic spinning machine for spinning slivers directly into a yarn by air jetting nozzles is disclosed. This yarn knotting device comprises means for retaining a spun yarn temporarily during a period ranging from the time of completion of the operation of a yarn knotter for connecting the spun yarn with a yarn taken out of a package to the time of resumption of winding.
Claims13
A yarn piecing and knotting device for use in piecing broken yarn in a pneumatic spinning apparatus, which is disposed between a take-out roller and a winding package in the pneumatic spinning apparatus, said piecing device comprising a spun yarn sucking pipe for sucking and attracting a yarn spun through the take-out roller, a separate wound yarn sucking pipe for sucking and catching a broken yarn end from the winding package, a knotter for knotting the sucked spun yarn with the sucked wound yarn, and a retaining means for retaining a yarn spun from the spinning apparatus during a period ranging from the time of completion of the operation of the knotter to the time of resumption of the winding operation only, in a slackened U shape configuration by the force of air, said retaining means being disposed between the take-out roller and the spun yarn sucking pipe.
Dependencies are inferred from the claim text.