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Sylvester Howard Roper (November 24, 1823 – June 1, 1896) [1] [2] was an American inventor and a pioneering builder of early automobiles and motorcycles from Boston, Massachusetts. In 1863 he built a steam carriage, one of the earliest automobiles .
The Roper steam velocipede was a steam-powered velocipede built by inventor Sylvester H. Roper of Roxbury, Boston, Massachusetts, United States sometime from 1867 to 1869.It is one of three machines which have been called the first motorcycle, [1] along with the Michaux-Perreaux steam velocipede, also dated 1867–1869, and the 1885 Daimler Reitwagen.
The earliest year suggested for the Michaux-Perreaux steam velocipede is 1867, [2] [3] which could be either the same year, or earlier than the Roper velocipede, which some authorities also date as early as 1867, [14] [15] while others such as motorcycling historians Charles M. Falco and David Burgess-Wise, and Motorcycle Consumer News design ...
[1] [2] Some rare occupations are included in this list, but only if they have notable practitioners, for example alchemist or phrenologist. Terms which describe groups of people carrying out a variety of roles, but which are not specific occupations, are excluded from this list even if they are obsolete, for example conquistador or retinue.
Furthermore, if the definition of a motorcycle is inclusive of a steam engine and not exclusive to an internal combustion engine, then the world's first motorcycle may either have been American; a coal-powered, two-cylinder, steam-driven motorcycle known as the Roper steam velocipede invented by Sylvester Howard Roper in 1867; [170] [171] or ...
Harbinger, a playable character in the game Bloodline Champions; Harbinger, a sentient starship in the Mass Effect series; Harbinger, a soul of the mage class in the game Rift (video game) Harbinger, an allied support bomber aeroplan in the game Red Alert 3: Uprising; Project Harbinger, a top-secret research program in the game series F.E.A.R.
The company was founded in 1867 by Stephen Wilcox, Jr. and his partner George Herman Babcock with the intention of building safer steam boilers. Stephen Wilcox first avowed that “there must be a better way” to safely generate power, and he and George Babcock responded with the design for the first inherently safe water-tube boiler.
Swiffer Bissell Steamboost is a steam mop. It uses special steam pads and it deeply penetrates dirt. Swiffer Continuous Clean Air Cleaner is an air filtration system introduced in 2018. [5] Like Swiffer mops, it uses a refill system for the filter, which is a common model across the air filtration industry.