THREAD GUIDING MEANS FOR YARN WINDING

摘要

A thread guide for a yarn winding machine, which comprises a reciprocating shuttle slidably mounted on a fixed track and means for subjecting the shuttle to timed blasts of compressed air to cause its reciprocating movement along the track. The shuttle is a double-acting cylinder member having opposed open-ended cylinders which cooperate with fixed pistons mounted in adjustable positions at opposite ends of the track. The fixed pistons contain poppet valves arranged to be actuated by the engagement of the shuttle with their actuating members at the ends of the reciprocating movements of the shuttle along the track. Each actuating member protrudes from the crown of one of the fixed pistons for engagement by the end wall of the opposed cylinder of the shuttle and when so engaged opens the valve to deliver a blast of compressed air into the cylinder to propel the shuttle in the reverse direction along the track.