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US 5,094,275 AGranted
Weft storing and delivering device with pneumatic threader
AssigneeIro AB
InventorsHenry Shaw, Jo Tacq, Andre Vandeputte, Lars H. G. Tholander
Life of this patent
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AssigneeIro AB
InventorsHenry Shaw, Jo Tacq, Andre Vandeputte, Lars H. G. Tholander
Estimating the term…
A yarn storing and delivering device for a weaving machine includes a stationary base body and a hollow shaft which is rotatably mounted in the base body and which carries a laterally projecting yarn feeder element. Yarn is guided into the hollow shaft and wound by the yarn feeder element onto a storing surface of a storing drum which is maintained stationary relative to the base body. The yarn is axially withdrawn from the storing drum over a free edge of the storing surface and through a substantially central guide opening. A threading device equipped with air jet nozzles is provided for automatically threading the yarn up to a location within the guide opening. The threading device includes a compressed air conveying system disposed between the guide opening and a location adjacent the outlet of the yarn feeder element. The compressed air conveying system includes a plurality of stationary directional jet nozzles which, when activated, provide an air flow which delivers the yarn to the guide opening.
A yarn storing and delivering device for a textile machine, comprising a stationary base body, a hollow shaft rotatably mounted in said base body and carrying a laterally projecting yarn feeder element for tangentially winding the yarn guided into said hollow shaft on a storing surface of a storing drum, means for keeping said storing drum stationary relative to said base body, said storing surface having a free edge, said yarn feeder element having an outlet which permits said yarn to exit therefrom, said yarn being axially withdrawn from said storing drum over the free edge of said storing surface and through a substantially central guide opening, and a threading device for automatically threading said yarn up to a location within said guide opening, characterized in that said threading device between a location adjacent the outlet of said yarn feeder element and said guide opening comprises a compressed air conveying system including a plurality of stationary directional jet nozzles which when activated deliver said yarn to said guide opening by means of an air flow.
Dependencies are inferred from the claim text.