HALL (Samuel). Samuel Hall's Improvements on Steam Engines; consisting of an improved piston and valve: an improved method of lubricating engine pistons, piston rods and valves; and an improved method of condensing the steam and supplying water to the boilers and such steam engines as are wrought by a vacuum produced by condensation.1834

Nottingham: Printed by Samuel Bennett, 8vo, 16pp., coloured engraved folding plate (lightly spotted), disbound. Goldsmiths'-Kress no. 28499.