Abstract: An apparatus for modifying sewing data to control a sewing machine including (a) a stitch-forming device for forming stitches on at least one work sheet, (b) a work-holding device for holding the work sheet, and (c) a displacing device for displacing at least one of the stitch-forming device and the work-holding device, relative to each other, according to the sewing data, the sewing machine having a prescribed coordinate system, the apparatus including a plurality of detectable objects located at a plurality of fixed positions spaced apart from each other on the work-holding device, respectively; a position detector which detects an actual position of each of the detectable objects in the prescribed coordinate system of the sewing machine; and a data modifying device for modifying the sewing data based on a difference of the detected actual position of the each of the detectable objects from a corresponding one of respective reference positions of the detectable objects in the prescribed coordinate system of

Abstract: Transferring system for transferring delivery members to their destinations through a computed transfer route when any trouble exists in a usual transfer route. The delivery members carrying a workpiece to be stitched, and is to be transferred to a desired work station (destination). The delivery member undergoes distribution by a plurality of distribution mechanisms and transferring rails connecting the distribution mechanisms. By suitable control to the distribution mechanism the delivery member reaches its destination even if any troubled location exists in a transfer route. The transferring system includes the distribution mechanism, line connecting information storage device, transfer control device, trouble storage device and new route setting mechanism. The trouble judgment device is connected to the line connecting information storage device. The transfer control device is connected to the line connecting information storage device and the new route setting mechanism.