VARIABLE WALKING FOOT APPARATUS FOR A SEWING MACHINE FOR MATTRESSES

摘要

A method and apparatus for forming a partial mattress sack which prevents radial bunching of the mattress. The method includes the steps of feeding first (206) and second (205) panels having different edge lengths at different rates through a sewing machine to form the partial mattress sack. The apparatus includes a variable speed upper walking foot (320) having an automatic speed adjustment (352).