Abstract: A multi-thread single-line shuttle stitch line, consisting of at least three threads, where each top thread is independently and separately connected with each bottom thread in a pre-determinable sequence of such connection through perforations in the material, with all of said top and bottom threads passing through said perforations, making one stitch line. The top threads can be intertwined, as can the bottom threads.

Abstract: The present invention relates to an improvement in the home point detection of a motor for a sewing machine wherein the motor is used to rotate a cam into a predetermined feed pitch formed on the cam, and change in the quantity of work piece feeding that corresponds to such feed pitch is transferred to a feed dog through a linkage means. Respective feed pitches are formed in each of the regions of the cam, whereas the detecting position of home point of the motor is set in a suitable position. Moreover, the rotating direction of the cam toward the detecting position of home point is reversed in accordance with each of the regions. Accordingly, the returning speed of the motor back to the detecting position of home point is made fast and only one home point detector is used.