[Lithographs of metallic pistons, showing the 'similarity of action' between those of Cartwright, those now made by John Hall and Sons on Cartwright's principle, and those of John Barton. Rev Edmund Cartwright's patent (no.2202) re steam engines was taken out in 1797 Nov, Barton's patent (no.4062) for pistons in 1816 Aug. Watermarked 1827]

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2 plates
Identifier:
GOOD/A/1244
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