Singer 72W19 - Page 11

TO THREAD THE BOBBIN CASE CAP
Hold the cap in the left hand, place the bobbin with the
thread drawing from the direction shown (see Figs. 5 and 6);
then draw the thread under tension spring (a) and through slot
(b) back under tension spring (a), through slot (c) and out under
thread guide (e) thus threading the cap. After threading, place
the cap on the bobbin case base in the machine and push down
the latch.
The bobbin case tension is regulated by the screw which
passes through the centerof the tension springon the bobbin case.
TO WIND THE BOBBIN
(See Fig. 8)
On machines fitted with loose pulley, turn the thumb screw
(C, Fig. 8), at the right of the balance wheel, over toward you to
release the balance wheel. It will be necessary to hold tl\e
balance wheel while loosening the thumb screw.
Fasten the bobbin winder to the table with its driving pulley
in front of the machine belt so that the pulley will dropawayfrom
the belt when .sufficient thread has been wound upon the bobbin.
Fig. 8. Winding the Bobbin
From the library of: Superior Sewing Machine & Supply LLC