man engines

A form of man engine — A mechanical lift for raising and lowering people through considerable distances; specifically (mining), a device by which miners ascend or descend in a shaft, consisting of a series of landings or sollars in the shaft and an equal number of shelves on a vertical rod which has an up and down motion equal to the distance between the successive landings. A person steps from a landing to a shelf and is raised or lowered to the next landing, upon which they then step, and so on, travelling by successive stages.