First a washer was placed on the axle, then the wheel was applied, with the larger or flange disk against the face block, after which another washer was slipped on.

Fig. 299. Car Body with Axles in Place. Fig. 300. Section Showing How to Fasten on the Wheel

A nut was screwed against this washer just tightly enough to keep the wheel snugly in place, and yet let it turn freely on its axle. Then to keep this nut from shaking loose a second nut was screwed on against it. While one fellow held the first nut from turning, another screwed the second nut against it as tightly as he could. The second nut is technically known as a "jam nut," or "lock nut." The car was completed by laying a couple of boards across from one scantling to the other to serve as seats.