| Description | Bell Crank Engines (4 items).
4 horse power bell crank engine, with 13 inch cylinder, 2 foot stroke.
Reverse plan and sections of the engine and boiler, framing, engine platform etc. (5 drawings on 1 sheet); reverse plan of the engine house and boiler; letter from Boulton Watt & Co. to William Murdock dated Soho, 22 Jan. 1803, with a copy of a previous letter from Boulton Watt & Co. to Murdock of the same date and a sketch of Gould Williamson & Co.'s premises on the same sheet; letter from Thomas Swanwick with sketch of the engine house (not dated but marked "In answer to ours 14 Feb. 1803". The reverse drawings bear letter codes.
Original Portfolio or 'Book' No. 506. Catalogue of Old Engines p. 254.
For Gould Williamson & Co. Mill, Derby.
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