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William Dent Priestman, born in 1847 near Kingston upon Hull was a Quaker and engineering pioneer, inventor of the Priestman Oil Engine, and co-founder with his brother Samuel of the Priestman Brothers engineering company, manufacturers of cranes, winches and excavators. ==Biography== William along with ten other offspring was the son of Leeds corn-miller (and latterly NER director) Samuel Priestman.〔"Priestman, William Dent". Biographical Dictionary of the History of Technology〕 He was educated at Bootham School in York, and then apprenticed at the Humber Iron Works, later at the North Eastern Railway (NER) in Gateshead. In 1869 He then joined the engineering company owned by William Armstrong.〔 (William Armstrong & Company, later to become Armstrong Whitworth). His father purchased the Holderness Foundry in Hull, and he began to do business independently; his brother joined him at the company, which later became Priestman Brothers.〔 In the 1870s a license to manufacture petrol engines (of a type designed by Eugène Etève, similar to Étienne Lenoir's engines) was obtained. The dangers and insurance costs of engines run on highly flammable petrol caused him to investigate the use of lamp oil in internal combustion engines. He obtained patents, including a patent for an oil vaporiser in 1885.〔 His investigations led him to develop one of the first reliable engines to work on a fuel heavier (more viscous and with a higher boiling point) than petrol., known as the 'Priestman Oil Engine'. In 1894 William and Samuel Priestman were given the John Scott Award for their engine. Having lost control of the Priestman company in 1895 following insolvency William spent the rest of his life helping others. He died in Hull in 1936.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「William Dent Priestman」の詳細全文を読む スポンサード リンク
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