Charlesworth, Hall and Co
Charlesworth, Hall and Co of Richmond Hill Ironworks, Oldham were electrical engineers and engine makers.
1890 Compound tandem engine and dynamo. Illustration and details in 'The Engineer'
1890 Electric searchlight machinery. Illustration and details in 'The Engineer'
1892 Crystal Palace Electrical Exhibition. Oldham dynamo and a search-light projector. 
1894 High-Speed Closed Engine. (Charlesworth and Co).
Sources of Information
- The Engineer of 7th February 1890 p111
- The Engineer of 20th June 1890. p496
- The Engineer of 21st September 1894 p251
- 1892 The Practical Engineer