It dawned on me that I hadn't put a picture of "Fannie" here yet...
She's a 1934 White Number 8, with a vibrating shuttle. Evidently they only made these models for a year or two, so they aren't a common machine. Side clamp attachments, and the bobbin winder has a separate belt. The machine runs on a friction wheel attached to the motor, then you attach the belt to wind the bobbin.