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US 5,400,583 AGranted
Yarn lap preventor for a take-up shaft in open end spinning machine
AssigneeThe DE Williams Company
InventorKenneth A. Cobb
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AssigneeThe DE Williams Company
InventorKenneth A. Cobb
Estimating the term…
A yarn lap preventor for mounting in an open end spinning machine to deflect a parted yarn end away from an enlarged diameter area of a rotating take-up shaft of the open end spinning machine. The yarn lap preventor is preferably integrally molded plastic including a body portion connected to a base mounting portion. The body portion of the yarn lap preventor includes a tapered edge which is positioned adjacent the enlarged diameter area of the take-up shaft. The body portion also includes a shield portion which extends along an arcuate portion of the enlarged diameter area. The base mounting portion includes a slotted opening to facilitate mounting with an existing fastener, such as the fastening screw which secures a yarn guide eyelet mounting plate to a traverse bar. A method for preventing the accumulation of yarn laps is also disclosed which includes deflecting a parted yarn and shielding the enlarged diameter area of the take-up shaft from the parted yarn end. The method for retrofitting an existing open end spinning machine includes using an existing fastener adjacent the enlarged diameter area of the take-up shaft.
In an open end spinning machine having a rotating take-up shaft with an enlarged diameter area thereon for engaging and moving a yarn from a spinning area to a drive roll for forming a yarn package, and traverse means cooperating with said take-up shaft for moving the yarn in a reciprocal manner across the enlarged diameter area of the take-up shaft, the combination therewith of deflection means connected to and carried by said traverse means for deflecting broken yarns away from the enlarged diameter area of the take-up shaft to prevent the formation of yarn laps thereon, said deflection means comprising a body portion closely associated with and overlying an upper portion of the enlarged diameter area of said take-up shaft.
In an open end spinning machine having open end spinning means for forming a yarn from sliver, a rotating take-up shaft with an enlarged diameter area thereon downstream from and above said open end spinning means for engaging and moving a yarn downstream from said spinning means to a yarn package drive roll for forming a yarn package, said yarn package being located above said take-up shaft, the combination therewith of deflection means connected to and carried by said open end spinning machine adjacent said enlarged diameter area of said take-up shaft for deflecting broken yarns away from the enlarged diameter area of the take-up shaft to prevent the formation of yarn laps thereon, said deflection means comprising a body portion closely associated with and overlying an upper portion of the enlarged diameter area of said take-up shaft.
A method for preventing accumulation of yarn laps from broken ends of yarn on a rotating take-up shaft of an open end spinning machine during the operation thereof, including providing the open end spinning machine with open end spinning means for forming a yarn from a sliver and providing the rotating take-up shaft with an enlarged diameter area thereon positioned downstream from and above the open end spinning means for engaging and moving a yarn downstream from the spinning means to a yarn package drive roll for forming a yarn package positioned above the take-up shaft, the method further comprising the steps of upon breaking of a yarn, engaging the yarn above the enlarged diameter area of the rotating take-up shaft and deflecting the broken yarn away from the upper portion of the enlarged diameter area of the rotating take-up shaft;
Dependencies are inferred from the claim text.