Evening Republican, Volume 23, Number 20, Rensselaer, Jasper County, 22 January 1920 — Tiny Engine. [ARTICLE]

Tiny Engine.

Hillsboro. N. D.—A young jeweler of Hillsboro has made a tiny engine, run by compressed air, which is only three-quarters of an inch long and weighs only two and one-quarter grains. The diameter of the cylinder bore is 28-1,000 of an Inch ; the diameter of the flywheel fe 9-64 of an inch and its stroke Is 96-1,000 of an inch. Contrasted with this is a valve used by the Ontario Power company of Niagara Falls, which is 31 feet high, weighs 65 tons and has a water opem lug nine feet across. \ r ?