DEVICE FOR CLAMPING THE WORKPIECE IN A SEWING MACHINE

摘要

This invention relates to a device for selectively actuating the workpiece clamp an an automatically controlled bar tacker sewing machine utilizing electrically operated pneumatic cylinders operatively connected to the upper clamping element to cause release of the workpiece. The clamp feet are releasably independent of other sewing operations. The upper clamping plate and the feed plate are secured to the clap assembly by quick change fittings.