Tanning-solution Maker
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Controls series of vats that boil tanbark, quebracho,
chemicals, and water to prepare tanning solution: Weighs
specified amounts of maetrials on scale and dumps them into vat.
Opens valves to admit water and steam into vat. Adjusts steam
valve to maintain solution at speciifed temperature.
Tests
sample of solution for specific gravity, using hydrometer. Adds
materials to solution to obtain solution of speciifed gravity.
Starts pump to transfer sloution from vat to storage tank. May
grind bark or wood, usnig grinding machine.
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Tanning-Solution Maker
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