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[[William Judson Addis]], was the engineer to the local funds committee in [[Thana|Tannah (later named Thana and now Thane)]], a fortress town on the island of Salsette, 21 miles(34km) north of Bombay. It was also the site of the first railway to open in India with the opening of the ‘Bombay (Boribunder) to Thana’ section of the [[Great Indian Peninsula Railway]] (GIPR) on 16 April, 1853 and the [[Tannah Viaduct]] which opened in 1854.
In 1869 Addis was granted a Patent <ref> UK Patent No 1850 Granted 14 January 1869</ref> for a tramway with a single rail on which ran a cart with two bearing wheels which take all, or nearly all, the weight; and ordinary wheels which serve to steady the machine and prevent over-turning. The cart, loaded with three tons, was easily drawn by two bullocks <ref name= Graces>[http://www.gracesguide.co.uk/images/1/13/Er18700617.pdf “The Engineer” 17 Jun 1870, page 377 (Graces Guide pdf 5))]; Retrieved 9 May 2017</ref>.
In 1870 a further Patent was granted concerning improvements to the track system <ref> UK Patent No 90 Granted 12 January 1870</ref>.
