by William Lafferty » January 10, 2024, 3:34 pm
The Richardson had twin 45-ton American Hoist & Derrick cranes, each powered by a GM "Twin Four" Diesel, while 15-hp electric motors controlled the booms' swing and four similar motors drove the crane's lateral motion on deck driving an eight wheel truck. The current for the motors (and magnets) was supplied by a 6-cylinder GM Diesel driving an Allis-Chalmers 100 kW, 300 volt generator. Both the hoist engines and generators were located in the crane cabs. The booms were 75-feet with 44" Cutler-Hammer magnets and Owen 4-yard clamshell buckets serving four hatches. So... That's how it was able to do its job in 1974. The work was done by the American Ship Building Company yard at South Chicago during the winter of 1950-1951.
The [I]Richardson[/I] had twin 45-ton American Hoist & Derrick cranes, each powered by a GM "Twin Four" Diesel, while 15-hp electric motors controlled the booms' swing and four similar motors drove the crane's lateral motion on deck driving an eight wheel truck. The current for the motors (and magnets) was supplied by a 6-cylinder GM Diesel driving an Allis-Chalmers 100 kW, 300 volt generator. Both the hoist engines and generators were located in the crane cabs. The booms were 75-feet with 44" Cutler-Hammer magnets and Owen 4-yard clamshell buckets serving four hatches. So... That's how it was able to do its job in 1974. The work was done by the American Ship Building Company yard at South Chicago during the winter of 1950-1951.