1898 – He was born on the 27th of May in the city of Nashville, Tennessee.
1913 – He graduated from Purdue University.
1920-1930 – Crosthwait invented a new vacuum pump, an improved boiler, and a new thermostat control. All of which were more effective in the heating systems for larger buildings.
1930-1971 – David became the Technical Advisor of Durham-Bush, Inc.
– He wrote an instruction manual and guides for heating and cooling with water and guides, standards, and codes that dealt with heating, air conditioning, and ventilation systems.
1970 – He taught at Purdue University.
1975 – Crosthwait was granted and an honorary doctoral degree.
1976 – David Crosthwait died.