... . Pneumatic pressure source drive the oil motion.·Side frames made of high quality cast iron is ... gauge, this ensure the optimal yarn build-up. The pressure roller swings away upon braking.· ... failure.·Expansion reed move left and right, up and down automatically. Intermittent blower available to keep comb ... Benninger,Alkmaar,Louise ect)5.Expansion reed:up-and-down movement,left-and-right movement,W type ...