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An illustration of Hero's aeolipile. An aeolipile, aeolipyle, or eolipile, from the Greek "Αἰόλου πύλη," lit. ' Aeolus gate ', also known as a Hero's (or Heron's) engine, is a simple, bladeless radial steam turbine which spins when the central water container is heated. Torque is produced by steam
Hero's aeolipile. A number of devices and inventions have been ascribed to Hero, including the following: The aeolipile (a version of which is known as "Hero's engine"), which was a rocket-like reaction engine and the first-recorded steam engine (although Vitruvius mentioned the aeolipile in De Architectura, presumably earlier than Hero). [13]
The 1698 Savery Steam Pump - the first commercially successful steam powered device, built by Thomas Savery [1] The first recorded rudimentary steam engine was the aeolipile mentioned by Vitruvius between 30 and 15 BC and, described by Heron of Alexandria in 1st-century Roman Egypt. [2]
With the crank and connecting rod system, all elements for constructing a steam engine (invented in 1712) — Hero's aeolipile (generating steam power), the cylinder and piston (in metal force pumps), non-return valves (in water pumps), gearing (in water mills and clocks) — were known in Roman times.
The firm was the successor to the firm of Owens, Ebert & Dyer (founded in 1845 by Job E. Owens) which went into receivership in 1876. [1]In 1882, George A. Rentschler, J. C. Hooven, Henry C. Sohn, George H. Helvey, and James E. Campbell merged the firm with the iron works of Sohn and Rentschler, [1] [2] and adopted the name Hooven, Owens, Rentschler Co.
S-4 14 engines built 1953; RS-2 2 engines built 1949, and later sold to Lehigh Valley Railroad; RSD-5 26 engines built 1952; RS-1 2 engines built 1953; RS-3 2 engines built 1955; RSD-12 10 engines built 1956; RSD-7 12 engines built 1956, retired and traded to GE 1969; C-630 4 engines built 1967, and later sold to Robe River Mining of Australia
Heron was the flag bearer for Team Panama at the Olympics opening ceremony. She is one of eight Panamanian athletes, and the only gymnast from the country, to participate in the 2024 Paris Olympics.
Each year, the National Threshers Association reunion/show features approximately 50 steam engines - all operating - in addition to hundreds of gas tractors and gas engines. Daily demonstrations include wheat threshing , straw baling , sawmill , a shingle mill, farm plowing , and machinery parades with covered grandstand seating for spectators.