as label 1 have been advanced by one step in the direction of arrow 52 as represented in fig4 said advancing being effected during the pivoting motion of the arc needle 13 in the direction of arrow 15 after having left label edge 8 and during its ensuing pivoting motion in the direction of arrow 14 in fig2 into the position shown in fig4 which is shortly ahead of the piercing position the blind stitch sewing machine is stopped and the compressed air actuator 47 is actuated in order to move fixing needle 46 so that it enters at least coat 3 or its outer fabric 5 and lining 2 at the site of the last arc needle piercing point 57 that is fixing needle 46 enters below the point where the arc needle 13 last pierced label edge 8 finally fabric presser plate 17 is moved away by a compressed air actuator not shown from throat plate 12 in order to release coat 3 and label 1 at this point the operator s can rotate coat 3 and label 1 ninety degrees about fixing needle 46 in the direction of arrow 58 of fig4 and the fourth label edge 9 can be sewed onto lining 2 of coat 3.