Designed for winding the lower thread on to a bobbin, for a backstitch sewing machine, the bobbin and winding spindle are provided with slits so that, when the bobbin is mounted and clicked into place, the two slits are aligned for the user to insert the end of the lower thread for ...
A thread-feed device on a sewing machine contains a thread draw-off element (10) in the thread run between the yarn bobbin (5) and needle (3) and a pair of clamping elements (6, 7) which are located in front of and behind the thread draw... MATSUBARA,TORU,GOTO,SUMIO,IIMURA,IKURO...