Invention: Inproved Boiler
David Crosthwait was born in Nashville, Tennessee and grew up in Kansas City, Missouri. He received a Bachelor of Science degree (1913) and a Master of Engineering degree (1920) from Purdue University and honorary doctoral degree in 1975.
Crosthwait moved to Marshall Town, Iowa in 1913 to work for the Durham Company designing heating installations. From 1925 to 1930, Crosthwait was the director of the research department, investigating heating and ventilation methods. Crosthwait holds 39 U.S. patents for heating systems, vacuum pumps, refrigeration methods and processes and temperature regulating devices, and 80 international patents for the same. He is well known for creating the heating system for New York's famous Radio ... inventors.about.com