Close-up of metal drive wheel with piston-style axle crank that goes through back leg; the chain that connects the crank to the treadle, passing through a hole in the triangular wooden piece that goes between the legs.
Close-up of metal drive wheel with piston-style axle crank that goes through back leg; the chain that connects the crank to the treadle, passing through a hole in the triangular wooden piece that goes between the legs.
