Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 132,812 pages of information and 210,387 images on early companies, their products and the people who designed and built them.
of Detroit, Michigan, USA
About the time of the Great Depression, the company developed prototypes of the Single Sleeve-Valve engines for a range of applications, from cars to trains to airplanes; the company thought that production would be easier, and costs would be lower than its counterpart poppet valve engines. Due to the financial problems of Continental, this line of engines never entered production.