Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 146,747 pages of information and 232,400 images on early companies, their products and the people who designed and built them.
Dunlop, Meredith of Hartlepool
1873 'The Largest Marine Gun Metal Casting Ever Produced.— Messrs. Dunlop & Meredith, of the Cliff House Ironworks, West Hartlepool, have just succeeded in completing the heaviest gun metal casting, for ship- building purposes, ever produced in this country. It consists of one stern frame of a Brazilian armour-clad man-of-war of 5400 tons register, now being built by Messrs. J. & William Dudgeon, shipbuilders, of Cubitt Town, London. The exact dimensions of this monster casting are 26½ ft. by 21 ft. in total measurement and 9 ft. 10 in. between the frames. The internal diameter of the "boss " through whioh the propeller is to pass is 2 ft. 9 in. and the external ditto 3 ft. 9 dia. The outer poop is 22 by 10 in. thick and the inner one, which is 3 "stepped" in order to receive the armour plates, varies from 7½ in. down to 1¾ in. in thickness ; and the total estimated weight is upwards of twenty-five tons. In addition to this highly snccessjul work, the above firm have been entrusted with the order to cast the stem and rudder frame, equally massive works, of the same material.' 
1874 Two cylinder vertical winding engine at Wheatley Hill Colliery near Durham 
1876 Cliffe House Works sold at auction.