作者: Clyde W Olson
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摘要: A frame having four wheels mounted thereunder with a hitch attached thereto for steering movements of all and brakes to the rear operating on when is raised non-operative position, rollers affixed in rows extending from one side thereof other defining an upwardly directed container receiving surface manually operable stops along each trailer, generally centrally located pivot positioned therearound rotational axes oriented horizontally radii outwardly hydraulic means moving them above allowing containers thereon be freely rotated or downwardly below so that may loaded unloaded trailer.