The crushed rock, being delivered at the top, would fall down from plate to plate, constantly exposing different surfaces to the heat, until it landed completely dried in the lower portion of the tower, where it fell into conveyors which took it up to the stock-house.
"Edison, His Life and Inventions"
Frank Lewis Dyer and Thomas Commerford Martin
This sand was transported automatically by belt conveyors to the rear of the works to be stored and sold.
"Edison, His Life and Inventions"
Frank Lewis Dyer and Thomas Commerford Martin
Hence, it became necessary to invent a system of conveyors that would be capable of transferring this mass of material from one place to another.
"Edison, His Life and Inventions"
Frank Lewis Dyer and Thomas Commerford Martin