which is pivoted to the presser bar guide bracket 3 the end of the vertical plate 20a is positioned on the cam 15 and the stopper 3a is positioned above the cam 15 when the presser foot lifting lever 5 is lifted to set idle position of the presser foot the action lever 20 will be raised by the cam 15 with the presser bar guide bracket 3 and the bottom surface 20c of the vertical plate 20a will be moved higher than the top 12a of the guide surface 12 when the presser foot is in operating position the bottom surface 20c is positioned with the stopper 3a between guide surface 11 and guide surface 12 when the presser foot is lifted the presser foot 2 can be rotated outward refer to fig3 b and when the presser foot 2 is in operating position the presser foot is lowered even if the presser foot 2 is raised up to idle position by a thick workpiece as shown in fig3 a the action lever 20 rotates clockwise around the shaft 21 by itself by means of gravity and a portion of the vertical plate 20 a enters between guide surface 11 and guide surface 12 thus the rotation of the presser foot 2 is stopped in this embodiment the action lever 20 and the guide surface 12 constitute a preventive apparatus for presser foot 2 from rotating around the presser bar 1 when workpiece is very thick and raises the presser foot 2 to the same position as if lifted by the presser foot lifting lever 5 referring to fig4 a 4b and 4c another embodiment of the invention is explained the same numerals as in.