The collection consists of seven series of records. The firm's accounts 1890-1952 are present. There is a run of correspondence, 1909-1942, chiefly to do with patenting, agreements and licensing. Drawing Office records include catalogues and product illustrations. There is a Register of Members 1896-1940, and two letters patent from 1874 and 1932. Records relating to the issue of shares, including share certificates, run from 1896 to 1951. The final, miscellaneous, section is comprised of printed company notices, 1860-1957.
There are accruals including an account book for 1952-58 and additional papers.