Ferguson Engineering, design, manufacture and install a simple yet effective method of dolly loading and unloading. Dolly unloaders are non-mechanical with no cylinders or moving parts for simplicity and are available with an extra check system to prevent operators from unloading the dolly the wrong way around. Dolly loaders are available with an integrated queue system and safety system to prevent a stack from falling off the end of the roller bed without a dolly in place.