Machines used for lifting only are not called cranes, but winches, lifts or hoists, while the term elevator or conveyor is commonly given to appliances which continuously, not in separate loads, move materials like grain or coal in a vertical, horizontal or diagonal direction.
I think this is, in part, because we are only now reaching the point where machines can suggest what we should do, and for the first time, we are beginning to see how it will be technically possible to build wise machines.
It is not to our discredit that machines can perform calculations so wondrously fast; rather it is to our credit that we conceived of and built such machines.
Very simple machines are used in some parts of Africa.
Saw gins are not adapted to long-stapled cottons, such as Sea Island and Egyptian, which are generally ginned by machines of the Macarthy type.