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Hackworth Valve Gear
The Hackworth valve gear is a design of valve gear used to regulate the flow of steam to the pistons in steam engines. It is a radial gear, with an actuating lever driven from the crank. The drive may be taken directly from the crank or indirectly via a return crank (as in all pictures). The other end of the actuating lever is attached to a die block which slides in a slotted link. When the link is vertical, the engine is in mid-gear. Forward, reverse and cut-off adjustments are made by moving the link away from the vertical. The valve rod is pivoted to a point on the actuating lever. History The gear was patented by John Wesley Hackworth (1820-1891), son of Timothy Hackworth, in 1859. Klug's valve gear Hackworth valve gear was a precursor to Klug's valve gear, but it differs from the latter in that the eccentric rod's suspension point moves to-and-fro in a straight line by means of a die block sliding in a slotted guide. See also * Joy valve gear - a design used extensively ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hackworth Valvegear, Lydia, Perrygrove Railway
Hackworth is a surname. Notable people with the surname include: *Ben Hackworth (born 1977), Australian writer and film director *David Hackworth (1930–2005), United States Army colonel and prominent military journalist *Green Hackworth (1883–1973), American jurist of international law *John Hackworth (born 1970), American soccer coach *John Wesley Hackworth (19th century), inventor of Hackworth valve gear *Thomas Hackworth (died 1877), engineer and brother of Timothy Hackworth *Timothy Hackworth (1786–1850), steam locomotive mechanical engineer *Tony Hackworth (born 1980), English footballer *Travis Hackworth, American politician See also *Hackworth valve gear, locomotive valve gear {{surname, Hackworth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
