Impressive original British linen-backed patent lithograph for George Westinghouse's 'improvements in apparatus for working brakes and communicating signals on railway trains by compressed air,' one page, 14.5 x 21, June 4, 1872. The diagram features several figures depicting the improved coupling apparatus for Westinghouse's famous air brake. The top border reads: "A.D. 1872. June 4. No. 1691. Westinghouse's Specification." The lower border reads: "The filed drawing is not colored. Drawn on stone by Malby & Sons. London, Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen's most Excellent Majesty, 1872." In fine condition.
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