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 148,464 pages of information and 233,889 images on early companies, their products and the people who designed and built them.

Frost Patent Engine Syndicate

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Formed by Romney Frost, a Castrol representative who designed a four-cylinder motorcycle engine described as an opposed tandem twin. The engine was 791 cc and produced 21 bhp and 3,000 rpm.

He also tested a Frost motorcycle but it did not go in to production

1919 Put into voluntary liquidation: a meeting of the creditors was held at the registered office of the Company, at Booth-street, Darlaston (c/o Rubery, Owen and Co.), 7th November 1919[1]


See Also

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Sources of Information

  1. London Gazette 7 November 1919
  • Powered Vehicles made in the Black Country by Jim Boulton and Harold Parsons. Published 1990. ISBN 0 904015 30 0