Needle positioner for high speed stitching machines

摘要

A system for positioning the needle of a high speed stitching machine includes a pitman assembly connected to a foot pedal and extending upwardly therefrom. A piston-cylinder device is interposed between the pitman assembly and a brake actuating mechanism for a main drive motor. A valve is secured to the pitman assembly in proximity to a stationary member. The valve is connected in fluid communication with the piston-cylinder device and a needle positioning mechanism.