Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,478 pages of information and 233,901 images on early companies, their products and the people who designed and built them.
Huram Coltman and Sons of Midland Ironworks, Loughborough built steam engines, boilers and for a short time some motor cars
See Huram Coltman
1894 Catalogue of welded boilers for heating 
1907 Produced a 20hp car and a small number made until 1920