1884 Walter Thomas Goolden entered a partnership with Mr. Henry Edmunds.
1885 The partnership was dissolved and Goolden was joined by Mr. A. P. Trotter, the firm being known as Goolden and Trotter, with works in Halifax. Produced several improvements in machinery for incandescent lighting
1885 Seems to have made electrical generators
1887 or 1888 Trotter retired from the firm which became Goolden and Co. Goolden then associated himself with Mr. Llewellyn B. Atkinson; the works were concentrated in London.