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Knight's Mechanical Encyclopedia (ed. Knight), S. (search)
ot was born in 1729, and died in 1804. In 1769, Moore, a London linen-draper, patented an invention of this kind; and in 1772, Oliver Evans obtained an exclusive right from the State of Maryland for the use of a steamcar-riage devised by him. In 1786, William Symington constructed a model of a steamcarriage, but afterward devoted his attention to steamnaviga-tion. In 1784, Murdoch, an assistant of Watt, invented a steamcarriage, which he tested on a road in Cornwall; and in 1789, Thomas Allen, of London, proposed a plan for constructing steam-carriages. Trevethick and Vivian, engineers of Cornwall, patented a high-pressure steam-carriage in 1802. It was a four-wheeled carriage, the wheels of the fore-carriage being small and having a narrower track than the large driving-wheels which sustained the body. The cylinder was horizontal, and in the rear of the hind axle. The piston-rod was forked to admit the crank, which turned a shaft having a spur-wheel gearing into a sim