Sewing Susie, you may have a challenge converting it to a handcrank[ATTACH=CONFIG]596668[/ATTACH]
The most available handcrank is a repop of the Singer and it must be attached to a boss like this. If your A doesn't have it, you will need to find out who made the A and IF there are handcranks available. And also even if the boss fits is doesn't necessarily mean the crank will work on your machine.