Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 126,749 pages of information and 199,760 images on early companies, their products and the people who designed and built them.
1884 In a letter to the editor of The Electrical World:
"The Lumley Dynamo-Electric Machine. SIR. In your issue of Nov. 8th I notice an article headed “The Kind of Plant Wanted.” Permit me to say that the so-called Phoenix dynamo made by Patterson and Cooper of London, England is no other than the Lumley machine ..."
Another sources suggest that Lumley may have been American.