Saladin box

A Saladin box is an instrument used for malting barley. It consists of a large rectangular container about 50 meters in length, and a set of vertical screws attached to a crossbar. The crossbar moves horizontally across the length of the container while the motion of the screws raise the barley from the bottom to the top. Combined with mechanical air flow across the barley for cooling, this allows for beds of barley between 60 cm (24 in) and 80 cm (31 in) deep to be turned over two or three times a day. The screws are moved and turned by a system of pulleys and belts.