Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,100 pages of information and 233,633 images on early companies, their products and the people who designed and built them.
Plambeck & Darkin of Queen Victoria Street, London
1876 Partnership dissolved between John George Cornelius Ulrich, Adolph F H Plambeck, and Frank Darkin (Civil Engineers and Machinery Agents). Business to be carried on under the name of Plambeck and Darkin. 
1876 Exhibitor at the Smithfield Club Show with a six-cylinder engine to West's patent 
1878 Plambeck and Co exhibited one of West's patent six-cylinder engines.