| Description | On the same sheet: Transcript of part of R. Fox and J. Lean’s steam engine patent, 10 Dec. 1812 Notes and sketches on boiler and air blowing apparatus “from Mr. Murdock, 22 Mar. 1831.” Docketed “Enquiries about the using [of] blast, or suction in our fireplaces and also about the use of tubes in boilers.” |