Engineers and Mechanics Encyclopedia 1839: Railways: A. Cochrane
From Graces Guide
A patent for a locomotive machine, bearing great similarity to James C. Anderson, last described, was taken out by A. Cochrane, on the 10th of August 1831; in conformity with which, a carriage was constructed and impelled through the streets of London soon afterwards; but from some defects in its construction, as well as from there being too few hands to work it, to overcome the weight and friction of the machinery, it did not perform satisfactorily.