Giovanni Branca

In existographies, Giovanni Branca (1571-1645) (EP:8) was an Italian physician, engineer, and architect, noted for []

In 1629, Branca, in his The Machine, invented an steam windmill, possibly inspired by Hero’s aeolipile, variations of which shown below, in which the steam being generated in a boiler was directed by a spout against the flat vanes of a wheel, which was thus set in motion: [11]

Branca steam engine

Branca engine
A side-profile of a Branca engine, a sort of modified aeolipile engine design. [2]

Quotes | On
The following are quotes on Branca:

Branca, in his mechanical treatise (1629), this distinguished physician describes a rotatory steam engine he used for grinding his drugs. He gives the top of the boiler the form of a man's head with a pipe in his mouth, blowing a jet of steam against the arms of a wheel (adjacent figure), to cause it to rotate on its axis, and by the pinion give motion to the drug machinery. A modification of this plan was tried at the Surrey Docks, with a wheel of 11.5 feet diameter, making 500 revolutions per minute. But the consumption of steam for an equal duty being greater with the rotatory than with a piston engine, led to its disuse. Branca also describes a hot-air rotatory engine, driven by the heat and smoke collected from a smith's forge; whereby to aid the smith in his operations; but all these engines he gives as the invention of others and not his own.”
— Daniel Clark (1885), An Elementary Treatise on Steam and the Steam-Engine [2]

1. (a) Branca, Giovanni. (1629). The Machine (Le Machine) (plate #25). Publisher.
(b) Anon. (1829). “On the Early History of the Steam Engine” (Ѻ), Journal of the Franklin Institute, 4(8):319-27.
(c) Thurston, Robert Henry (1878). A History of the Growth of the Steam-Engine (pg. #). D. Appleton and Company.
(d) Kirby, Richard; Withington, Sidney; Darling, Arthur; and Kilgour, Frederick. (1956). Engineering in History (pg. 151). Courier, 1990.
2. Clark, Daniel. (1885). An Elementary Treatise on Steam and the Steam-Engine, Stationary and Portable: an Extension of the Elementary Treatise on Steam of John Sewell (pgs. 17-18). Crosby.

External links
Giovanni Branca – Wikipedia.

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