RogerChemel

I inherited a Durkopp 17-1-1 that my father used extensively but he never taught me how to start the threading process at the foot. The machine is functional mechanically, I'm sure I have the bobbin wound properly. I have it threaded properly from the spool to the needle. I am not an expert obviously but I can't get the needle thread and the bobbin thread to "latch". What is the method to get the thread to "catch" or "loop" together? I would so love to get this machine to sew.