Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 144,387 pages of information and 230,176 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
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'.