BACK n.
A large shallow vat; a cistern, tub, or trough, used by brewers, distillers, dyers, picklers, gluemakers, and others, for mixing or cooling wort, holding water, hot glue, etc. Hop back, Jack back, the cistern which receives the infusion of malt and hops from the copper. -- Wash back, a vat in which distillers ferment…
FEED n.
g, etc. -- Feed door, a door to a furnace, by which to supply coal. -- Feed head. (a) A cistern for feeding water by gravity to a steam boiler. (b) (Founding) An excess of metal above a mold, which serves to render the casting more compact by its pressure; -- also called a riser, deadhead, or simply feed or head Knig…
TANK n.
A large basin or cistern; an artificial receptacle for liquids. Tank engine, a locomotive which carries the water and fuel it requires, thus dispensing with a tender. -- Tank iron, plate iron thinner than boiler plate, and thicker than sheet iron or stovepipe iron. -- Tank worm (Zoöl.), a small nematoid worm found in…