Philadelphia : Aldrich Pub. Co. in conjunction with Simmons-Boardman Pub. Co. · leaf 650
couplings to a set of double reduction gear wheels, which amount of excess slag from the larger mass of wrought iron drive a four-bladed bronze propeller through a single line produced in the mechanical puddle furnace in one heat. Oil firing is an advantage in the process as well and makes pos- of…
Shipbuilding -- Periodicals · Shipbuilding industry -- Periodicals
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
