Turns valves to admit water and steam to drum. Weighs and mixes specified amounts of lime, salt, and other chemicals in mixing tank or drum, following formula, to prepare liming, deliming, pickling, and tanning solutions used in treating hides or skins.
Turns valve to transfer solutions to drum during specified processing cycles.
Moves lever to activate drum that cleans, washes, pickles, and tans hides or skins. Replaces solid door of drum with perforated door at specified intervals to filter waste from drum at completion of cycles. Verifies salinity and temperature of solutions, using salinometer and thermometer.