Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,101 pages of information and 233,633 images on early companies, their products and the people who designed and built them.
J. and R. Shorrock of Darwen, Lancashire
Lancashire Loom. Exhibit at Manchester's Museum of Science and Industry
Maker of stationary engines. 
1876 Advert: iron and brass founders.
1882 Supplied the 150 IHP tandem compound mill engine, looms, gearing, and various castings for Starkie Street Mill, Darwen. 14 ft dia flywheel, 24" wide, driving the mill by a 20" wide rubber belt, 105 ft long. 
1889 Horizontal cross-compound steam engine of 300 HP installed at Bank Top Mill, Darwen. Photographed by George Watkins in 1956, who noted that 'It was very rare to find a Shorrock engine'.