Advert For Clerk's Gas Engine, L. Sterne & Co. Limited reverse

Reverse side of a leaflet advertising Clerk's
patent gas engine. Dugald Clerk, an engineer from Glasgow in
Scotland, devoted himself to researching the theory and design of
gas engines. In 1881 he patented a gas engine that worked on the 2
stroke principle, this became known as the Clerk cycle and was used
in large gas engines and small petrol engines. By 1886 Clerk was
established in Bormingham c…