Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,345 pages of information and 230,027 images on early companies, their products and the people who designed and built them.
Smith and Grace Screw Boss Pulley Co Ltd. Power Transmission Engineers
of Nene Side Iron Works, Thrapston
of Euston Rd, London (1943) and of Manchester
1897 Smith and Grace of Thrapston seems to have started using the name Smith and Grace Screw Boss Pulley Co, recognising this as a major source of business. Incorporated as a limited company
1899 Smith and Grace Screw Boss Pulley Co were listed as advertiser in Engineering
The business grew into one of the largest manufacturers of pulleys and power transmission devices.
1912 The Smith and Grace Screw Boss Pulley Co exhibited pulleys at Olympia
1940 Advert for Veeflat drive transmitting over 1,000 hp and handwheels (Smith and Grace of Thrapston) 
1945 Advert for the 'Essangee' change-speed unit, a machine tool drive for capstans, lathes, millers, slotters etc. (Smith and Grace) 
2000 Smith and Grace Screw Boss Pulley Co was put into Voluntary liquidation