|Ericsson was not discouraged by the failure of the caloric ship and patented a number of improvements during the years 1855-1858. These experiments cumulatated with his improved Caloric Engine an open cycle machine using a power piston and a supply piston, fitted with valves. This engine proved an immediate success with over 3000 being sold with in three years. This machine was sold in sizes of 8 inches to 32 inch cylinder diameters.|
John Ericsson became interested in Solar power. Finding that his small caloric engine was not suitable on account of the valves he developed, around 1872, a displacer type (or Stirling) engine to work with a parabolic reflector; intended for use in the sun-burnt lands of the pacific coast for irrigation purposes. The engine was not taken up for use as a solar powered machine however, but his business backers persuaded him to patent the design, in 1880, as a pumping engine, heated by coal wood or gas. The engine was first built by the Delameter Iron Works and later by the Rider-Ericsson Engine Co. in sizes 5 inch to 12 inch cylinder diameter.
This was to be the last air engine developed by John Ericsson.