Marshall valve gear may refer to: * Marshall valve gear, a modified Hackworth valve gear, patented in 1879 by Marshall, Sons & Co. * J. T. Marshall valve gear, any of several valve gears invented by

James Thompson Marshall James Thompson Marshall (1854, Glanford Brigg, Lincolnshire - 1931, Knaresborough, Yorkshire) was an English railway and mechanical engineer known for inventing the 'Marshall valve gear' for steam locomotive use. James Marshall began his enginee ...

See also