cases tangentially to the bearing edge 64 the presser foot 70 and the feed dog 58 form a feeding device as generally usual the feed dog 58 performs a four motion feed movement causing a skipping feed operation takes place as follows it is assumed that before the start of working the needle 8 of the sewing machine is in its uppermost position and due to the operation of the working cylinder 31 the presser foot 10 is in the raised position the operation of the working cylinder 31 i e the extension of its piston rod 33 ensures through the co operation of said rod 33 with the bearing surface 30 that the lever 24 is pivoted around the shaft 22 so that simultaneously the lever 21 is rotated the upward movement of the lever 21 is transmitted by means of the tie rod 18 to the bearing block 16 so that the presser foot bar 9 is raised against the force of the compression spring 14 so that the presser foot 10 is disengaged from the throat plate 62 during the upward movement of the presser foot bar 9 by means of the guide lever 45 the lever 42 and consequently the guide member 44 is pivoted away from the presser foot bar 9 so that the timing belt 13 constructed as the upper material displacement means remains in the tensioned position by operating the cylinder 31 the roller 27 is simultaneously moved out of the action area of the cam disk 28 a workpiece w which in fig3 is shown in exemplified manner in the form of a shirt cuff is placed in the initial position a on the base plate 2 of the sewing machine 1 the outer workpiece edge being.