| Description | On the same sheet: Letter. James Brown (London) to William Creighton (Soho). 15 Dec. 1821. Docketed “On strengthening James Watt’s crank wheel. Particulars of Mr. Blanker’s engine wanted – his credit. On strengthening City of Edinburgh’s wheels with wrought iron. Mr. Mylne reckons 10 lbs. to the gallon and 54 gallons to the hogshead. Sketches of 6 and 8 horse engines wanted. Copper boiler put together.” |