1600 to 1860
- 17th century: Christiaan Huygens used gunpowder to drive water pumps, to supply 3000 cubic meters of water/day for the Versailles palace gardens, essentially creating the first rudimentary internal combustion piston engine.
- 1780's: Alessandro Volta built a toy electric pistol[2] in which an electric spark exploded a mixture of air and hydrogen, firing a cork from the end of the gun.
- 1791: John Barber receives British patent #1833 for A Method for Rising Inflammable Air for the Purposes of Producing Motion and Facilitating Metallurgical Operations. In it he describes a turbine.
- 1794: Robert Steele built a compressionless engine whose principle of operation would dominate for nearly a century.
- 1798: Tippu Sultan, the ruler of the city-state of Mysore in India, uses the first iron rockets against the British Army.
- 1807: Nicéphore Niépce installed his 'moss, coal-dust and resin' fuelled Pyréolophore internal combustion engine in a boat and powered up the river Saône in France. A patent was subsequently granted by Emperor Napoleon Bonaparte on 20 July 1807.
- 1807: Swiss engineer François Isaac de Rivaz built an internal combustion engine powered by a hydrogen and oxygen mixture, and ignited by electric spark. (See 1780's: Alessandro Volta above.) [3]
- 1823: Samuel Brown patented the first internal combustion engine to be applied industrially. It was compressionless and based on what Hardenberg calls the "Leonardo cycle," which, as the name implies, was already out of date at that time.
- 1824: French physicist Sadi Carnot established the thermodynamic theory of idealized heat engines. This scientifically established the need for compression to increase the difference between the upper and lower working temperatures.
- 1826 April 1: American Samuel Morey received a patent for a compressionless "Gas or Vapor Engine."
- 1838: a patent was granted to William Barnett (English). This was the first recorded suggestion of in-cylinder compression.
- 1854-57: Eugenio Barsanti & Felice Matteucci invented an engine that was rumored to be the first 4-cycle engine, but the patent was lost.[note 1]
- 1856: in Florence at Fonderia del Pignone (now Nuovo Pignone, later a subsidiary of General Electric), Pietro Benini realized a working prototype of the Italian engine supplying 5 HP. In subsequent years he developed more powerful engines—with one or two pistons—which served as steady power sources, replacing steam engines.