Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,376 pages of information and 233,850 images on early companies, their products and the people who designed and built them.

William Munger Heynes

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William Munger Heynes (1904-1989) of Jaguar

1904 Born in Leamington Spa, was a British automobile engineer.

Heynes was educated at Warwick School from 1914 to 1921

1922 Joined Humber where he worked in the drawing office before becoming head of the technical department in 1930. During this time he oversaw the introduction of significant models including the Humber Snipe and the Humber Pullman.

In 1935, after the Rootes Group takeover he left to join SS Cars Ltd also in Coventry. Initially he worked on the chassis but also was involved in increasing the output of the Standard Motor Company engines then being used.

After World War II, SS Cars was renamed Jaguar and Heynes persuaded the chairman William Lyons that the company should make its own range of engines. The result was the XK engine. As well as engine development Heynes also worked on many of the cars including the Mark V, the racing C-Type and D-Type, the Mark VII, E-Type and Mark X.

1969 July. Retired. It was reported that he intended to "devote his energy and enthusiasm to his farm". Shortly before his retirement he was honoured with a CBE (government award) for his services to exports. His responsibilities were taken over by R. J. ("Bob") Knight (Chief Vehicle Engineer) and W.T.F. ("Wally") Hassan (Chief Engineer, Power Units), both of whom were appointed to the company's board as part of their promotions

1889 Died.

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