Low speed high torque rotary drive for turning a furnace vessel or the like

摘要: A high output torque for low speed rotation of a heavily laden furnace vessel or the like is provided by fluid energizing rotary drive in which plurality actuating cylinders are connected with driving crank common eccentric connector rotatably stabilized and journalled on crank. Energization under pressure automatically synchronized so that all work together to urge same direction. system operates, stored energy if necessary, control master valve effect either direction forcefully but progressively decelerate standstill where it held, means cylinders.