| Description | Vacuum and Blowing Engines (21 items).
Single-acting engine with 42 inch cylinder, 8 foot stroke, chain connection.
Original and reverse general view of the engine and blowing cylinder, plan of the engine and boiler and blowing cylinder, front view of the engine and cross-sections of the boiler; longitudinal section of the boiler and chimney showing foreshortened steam pipe; plans and sections of the boiler (4 drawings on 1 sheet); sections of the feed apparatus and seating - this drawing is marked "No. 2" and notes on it refer to Nos. 5 & 6.
Set of numbered reverse drawings of the working gear: No. 1 - coloured plan of the top working gear; No. 2 - view of the catch and detent; No. 3 - view of the plug tree and one of the guide posts; No. 4 - plan of the upper working gear; Nos. 5 & 6 - side and front views of the working gear; No. 7 - coloured plan of the lower working gear; No. 8 - coloured view of the plug tree.
Also coloured original and reverse drawings of the upper working gear marked "… afterwards altered"; plan of the beam; original portfolio, with small drawing of the condenser stuck inside. Most of the drawings are simply dated "1782".
Original Portfolio or 'Book' No. 26. Catalogue of Old Engines p. 268.
For an iron works, Mont Cenis, France. This engine was built and sold by John Wilkinson, and was usually referred to as "Wilkinson's French Engine".
See also: Incoming Correspondence.
Published references: Dickinson & Jenkins, p. 182-3, plates L-LII (numbered working gear drawings nos. 5 & 6, 7, 1).
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