 On 31 December 1879, German inventor Karl Benz produced a two-stroke gas engine, for which he received a patent in 1880 in Germany.The first truly practical two-stroke engine is attributed to Yorkshireman Alfred Angas Scott, who started producing twin cylinder water cooled motorcycles in 1908.Gasoline (spark ignition) versions are particularly useful in lightweight or portable applications such as chainsaws and motorcycles.