The company which built the Ruby cars and engines was called H. Godefroy et Lévêque and was located in Levallois-Perret, in northwestern Paris.
[1] After the building of automobiles came to an end the company proceeded to develop and sell proprietary engines to a large number of small light car manufacturers.
Ruby engines were installed in a large number of different brands of light cars and cyclecars, including but not limited to: B.N.C., Coadou et Fleury, D’Yrsan, E.H.P., Georges Irat, Hinstin, JG Sport, Jousset, Kevah, Lambert, Le Cabri, Philos [de], Rally, Sandford, and Sénéchal.
In early 1926 the "DS Grand Sport" appeared; of 60 x 97 mm bore and stroke it is a 1097 cc engine which produces between 30 and 34 PS (22 and 25 kW).
[4] The Ruby K was a later, overhead valve supercharged performance version; with 62 x 90 mm bore and stroke it has a displacement of 1087 cc.