The covered wagon, also known as the Conestoga wagon or prairie schooner, worked its way across the American frontier powered by such livestock as mules, horses, or oxen. The wheels spun on spindles ...

Wheel-ends function as a system: the spindle, hub, and rim (or wheel), as well as the bearings and the fasteners, all work in concert to keep the wheels in place and the tires running straight and ...