Addis's Single Rail Tramway
The Addis's Single Rail Tramway was a patented monorail system invented in 1869 by William Judson Addis. History William Judson Addis from Thane (previously Tanna) in India invented, patented and developed a tramway with a single rail, on which a bullock cart ran with two double flanged wheels, which could take all, or nearly all, the weight, and two ordinary stabilising wheels, which served to prevent over-turning. A cart, loaded with three tons, could easily be drawn by two bullocks. Addis was granted his first patent in 1869, and in 1870 a further patent was granted concerning improvements to the track system. The investment cost for sleepers and rails was less than 50 % of an ordinary narrow gauge railway. The monorails were laid at the sides of an existing road, one for up traffic and the other for down traffic, leaving the centre part of the road for ordinary traffic. The rails protruded only 1½-2 inches (40-50 mm) above the surface of the road to limit the interferenc ...
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