I've been wondering too!
A lot of W&G machines had motors that aren't attached to the machine, but sit behind it and have a friction drive.
The machine is held to the base with a big screw from the underside, so it's very easy to remove the machine.
Even though it was sold as an electric machine, it does have the belt grove so it could be used other ways.
Most of the handcranks used a belt, but I think I've seen a few direct drive units. I had the wheel, and DH fabricated the bracket for me. It seems the original bracket got broke often, so they are quite hard to find.
This is a different machine, it came in a hand made box with a motor mounted in back with a belt for drive.
