Background
Yarnall, D. Robert was born on June 28, 1878 in Delaware County, Pennsylvania, United States. Son of Edward S. and Sidney S. (Garrett) Yarnall.
Yarnall, D. Robert was born on June 28, 1878 in Delaware County, Pennsylvania, United States. Son of Edward S. and Sidney S. (Garrett) Yarnall.
Bachelor of Science in Mechanical Engineering University of Penna., 1901. Mechanical Engineering, 1905. Doctor Engineering, Lehigh University, 1942.
Doctor of Science, Haverford College, 1947.
Vice president, general manager Nelson Valve C. Company, Philadelphia, 1912-1918. Organizer, 1912, director and president Yarnall-Waring Company, manufacturers power plant specialties, Chairman of the Board, from 1957. Chairman James G. Biddle Company until 1963, now director
Member Commission in Europe having charge of feeding German children, 1920, and chairman during later part of time with headquarters in Berlin, again in 1924 for American Friends Service Committee and the General Allen Committee. Member Austrian Refugee Commission, 1938. Member of commission to England to make survey of relief needs due to war, 1941.
Presiding officer Philadelphia Yearly Meeting (Quaker), 1929-1940.
Chairman board Pendle Hill, 1931-1954. Member business advisory council unites states department of Commerce, 1940-1942, Philadelphia City Planning Commission, 1942-1955, vice chairman, 1945-1955.
Associate trustee University Pennsylvania, until 1962. Fellow American Society Mechanical Engineering (manager 1917-1920.
Member Franklin Institute, Engineers.
Clubs: Engineers, Philadelphia, Cricket.
Married Elizabeth R. Biddle, 1923. Children: Doctorate. Robert, James Biddle, Nancy Hutton, With Coatesville Boiler Works, 1902-1907, Stokes & Smith Company.