Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 146,014 pages of information and 231,555 images on early companies, their products and the people who designed and built them.
Cintride masonry drills
of Grange Lane Works, Sheffield, 5
1960 Patent - An improved method of and means for metal brazing, such as copper brazing. 
1965 Patent - Improvements in or relating to cutting tools having removable tips.