This photo is of a little gas engine
Built by William E. Johnson of R. 4, Box 65, Portage, Wisconsin 53901, last winter. It was built entirely of scrap parts found in Mr. Johnson's shop, except for the spark plug and timing gears which he bought. He casted the cylinder head from scrap aluminum.
This is a hit and miss and runs very nice, according to Mr. Johnson, who spent over one hundred hours building the engine.