| Description | Additional Small Engines (14 items).
1350b. John & Charles Farnell, Isleworth (GI) and W. Dunn Gardner, Fordham (IT). May 1825, Dec. 1845, Jan., Feb. 1863, Jun., Sep., Oct. 1872, Dec. 1873. 14 items.
GI: 6 horse power independent crank engine, with 16 inch cylinder, 2 foot stroke, parallel motion, cast iron beam, cast iron connecting rod. Power increased to 8 horses 1863 and later to 10 horses.
IT: 8 horse power independent crank engine, with parallel motion, [cast iron beam, cast iron connecting rod].
Cross-section and plan of the engine and boiler, side view of the engine and longitudinal section of the boiler - reverse drawings; sketch plan for Gardner's engine showing platform, shafts etc. marked "Received at Soho with Robert Hunt's letter of 22 Dec. 1845". The reverse drawings bear letter codes and separate dimensions for Gardner's engine.
Also the following later items for Farnell & Watson's engine: plan and front and side views marked "6 horse engine" - tracing, Jan. 1863 (this appears to show a bell crank engine); section of boiler and side view of new cylinder and piston [?], stand pipe flanch on boiler - tracings, Feb. 1863; new cylinder and nozzle - partially coloured drawing, Feb. 1863; steam pipes and separator - partially coloured original and partially coloured reverse drawing, Jun. 1872; escape valve - coloured drawing, Sep. 1872; 1½ inch loaded valve - partially coloured drawing, Oct. 1872; reducing valve - coloured drawing made in the London office, Dec. 1873; sketch of head valve, detail of delivery valve from air pump (coloured), May 1884. Some of these drawings bear letter codes.
Original Portfolio or 'Book' No. 825.
For John & Charles Farnell, brewery, Isleworth, Middlesex (engine GI) and for W. Dunn Gardner, Fordham (engine IT). Engine GI was made in 1820, but not appropriated to the Farnells until 1825. John & Charles Farnell later became Farnell & Watson, and had the power of the engine increased to 8 horses by the addition of an 18½ inch cylinder in 1863. The cylinder was later re-bored, increasing the power to 10 horses. The drawings made in 1825 were re-used in 1845 for Gardner's engine. These engines were omitted from the Catalogue of Old Engines.
See also: 4/95 (Engine Order Book No. 9 - Engine GI). |