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William Robert Sykes
William Robert Sykes (1840–1917) was a British engineer from London, known for his work in railway signalling and other safety devices. He is noted for the invention of the Sykes ‘Lock and block’ interlocking system of points and signals.
==Career==
Born in London in April 1840, Sykes obtained a job with the Electric and International Telegraph Company in the Strand, at the age of 14. He was interested in clocks, and his knowledge of clockmaking became blended with his knowledge of the electrical telegraph.〔Polunnio, 1978〕 In 1861 he moved to Shepherds, an electric clock & chronograph maker and in 1863 he joined the London Chatham and Dover Railway (LCDR) under the telegraph superintendent, Mr Ruddall.〔Polunnio, 1978〕 He became interested in railway safety and by 1865 he had introduced three significant advances in this field. These were: an electrical repeater, showing the position of signals out of sight of the signalman; an automatic recording device showing what block signals had been sent and received, and a short length of track circuiting at Brixton.〔Marshall (1978), p.212.〕 In 1872 he devised a scheme where trains on the District Railway automatically turned signals to red as they passed them.
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