- R. E. Anderson
- , revised by R. C. Cox
Holtzapffel, Charles (1806–1847), mechanical engineer and technical writer, was the son of a German immigrant, John Jacob Holtzapffel, who, in 1787, settled in London as a tool and lathe maker. In addition to a thorough training in workshop practice, Holtzapffel received a good general education and, by assiduous study and practice, became a skilled mechanical engineer. He was married and had children. In 1838 he published his ...