Matthew Murray was an engineer and manufacturer whose work ranged from textile machinery and machine tools to stationary steam engines and locomotives. His importance to rail history is especially connected with the locomotives built by Fenton, Murray and Wood for John Blenkinsop’s rack railway at Middleton Colliery near Leeds.
Murray’s earlier work in textile machinery gave him experience with precision manufacturing at a time when repeatable machine construction was becoming increasingly important. Locomotives were assemblies of cylinders, valves, gearing, wheels and boilers; the ability to manufacture accurate parts was as important as the idea of steam traction itself.
John Blenkinsop patented a rack-and-pinion railway arrangement in 1811. Murray’s firm built the locomotives that used it. The best-known, Salamanca, entered service in 1812. A geared wheel on the locomotive engaged a toothed rack beside the running rail, providing positive traction rather than relying only on adhesion between smooth wheels and rails.
The Middleton system mattered because it operated commercially rather than as a brief demonstration. Science Museum material describes the line as the first enterprise in which steam locomotives were used with financially successful results, with related engines remaining in service for roughly two decades.
The rack system was a response to the conditions of its time. Engineers were uncertain how much adhesion a smooth wheel could reliably develop, and cast-iron track limited locomotive weight. Positive gearing allowed a relatively light locomotive to haul heavy coal trains, although the rack added cost, wear and mechanical complexity.
Murray’s surviving 1811 model associated with Salamanca is especially valuable because it provides early physical evidence of the design process. The full-size original locomotives do not survive, so models, drawings and contemporary reports must be clearly distinguished from original machines.
TransitSatellite should present Murray and Blenkinsop as collaborators with different roles: Blenkinsop patented and promoted the rack railway concept; Murray and his works translated the concept into functioning locomotives. That division is more accurate than assigning the entire system to either man alone.