Table Exhibiting the Gross Load which can be drawn by a Twenty-Horse Locomotive Engine,on the Level and on Various Inclinations of a Railway, and at Various Velocities; [...]
Lithographic reference table. Printed area 410 x 320mm (16 x 12½").
A very scarce broadsheet, with tables allowing a railway surveyor to calculate the feasibility of a railway route. Charles Blacker Vignoles (1793-1875) was an Irish civil engineer, who, having been assistant to the state civil engineer at Charleston, South Carolina, and city surveyor for St Augustine, Florida (writing 'Observations on the Floridas' in 1823), returned to Britain. He was employed by George Rennie to survey the proposed London and Brighton Railway and the Liverpool and Manchester Railway, although he resigned after disputes with George Stephenson. In 1830 he and John Ericsson (1803-89, later the designer of USS Monitor, the Union's first ironclad warship) patented a method of ascending steep inclines on railways; this table appears to be a teaser for the guide to this invention. Vignoles went on to build bridges and railways in England, Europe and America, including the Nicholas Chain Bridge in Kiev over the Dnieper River in 1846 and the Bahia and San Francisco Railway in Brazil in 1860. His advocacy of flat-bottomed rails caused them to become known as 'Vignoles rails'.
[Ref: 35370] £420.00