Gear's illustrated catalogue of wood and iron working machinery (1872)
A.S. Gear, Gear, A. S · Boston : Printed at A.S. Gear's printing office, 62 Sudbury Street · leaf 454
This cut represents the front of a Steam Boiler with an Aik Biast Heater mounted on the top, inposition to receive the hot gases escaping into the chimney through a series of tubes for heating acurrent of air which is drawn through among the tubes by the Blower. A portion of the hot blast canbe…
