Hay-loading machines refers to a type of agriculturalmachinery that lift the hay upon vehicles. The Douglas machine, consists of a frame hinged to the rear of the wagon, and suspended by chains, by which it can be raised and lowered at will. Upon the hinged frame stands an upright frame, carrying rollers at its top and bottom, Around the rollers pass leather belts, armed with steel spurs, which pick up the hay as the wagon passes over it. The lower rollers are rotated by chain-gear from the rear axle of the wagon.