Fly-fishing, horseback riding, hiking, biking, golfing, and hot-air balloon rides are just a few of the off-season treats.
In the year before (1742) he had planned the " Pennsylvania fire-place," better known as the " Franklin stove," which saved fuel, heated all the room, and had the same principle as the hot-air furnace; the stove was never patented by Franklin, but was described in his pamphlet dated 1744.
Hayward and Tyler's "Rider" engine maybe mentioned as another small hot-air motor which follows nearly the Stirling cycle of operations.
Owing to the difficulty and expense of securing water from running streams by gravity systems, a great variety of methods were developed of pumping water by windmills, gasoline or hot-air engines, and steam.
