| Description | Water Works Engines (26 items).
1082. New River Head, London, No. 2. May, Jun., Nov., Dec. 1793, Dec. 1796, Jul. 1817. 26 items.
Double-acting engine with 36 inch cylinder, 8 foot stroke, parallel motion.
Drawings of proposed engines and pumps, May & Jun. 1793:
Single acting engine: Reverse side view of the pump and 45 inch engine cylinder marked "Scheme for a Single Engine"; plan of the proposed engine house showing existing 32 inch engine and proposed 45 inch engine (partially coloured); front view of the pump.
Double-acting engine: Reverse side view of air vessel and pump and general view of engine with a 32 inch cylinder (2 drawings on 1 sheet both marked "Double Engine"); front view of the inner pump, 2 plans of the engine house with differing arrangements of pumps and air vessels.
Drawings of the engine as built:
Reverse general section of the engine and boiler, ground plan of the engine, front view of the engine; nozzles - original and reverse drawings (the original drawing is marked "Alter Poli's if they are to be found); parallel motion, air pump and condenser, plug rod, front and side views of the working gear (2 sheets of drawings), elevations of the pump - reverse drawings; reverse plan of the boiler and seating, sections of the boiler and seating. All these drawings bear letter codes.
Also copy of the general section of the engine; section of air vessel, pipes and valves marked "Proposed for New River Head No. 2"; 2 coloured plans of the engine house showing the existing 32 inch engine and round boiler, walls to be built etc.; rough pencil sketch plan of part of the engine house; press copy of letter from John Southern to Matthew Boulton [?] dated Soho, 23 Dec. 1796 re the drawings for the new boiler (2 sheets).
Also the following later items: press copy sketch of a pump bucket, Jul. 1817; coloured drawings of feed mouth and door for a 20 horse boiler at Hornsey Lane, Dec. 1858 (not for this engine).
Original Portfolio or 'Book' No. 202. Catalogue of Old Engines p. 176.
For the New River Head Water Works. Pumping engine, New River Head, London. This engine was erected alongside the first New River Head engine [see Portfolio 5/1090]. The List of Engines made at Soho states that this engine had a 32 inch cylinder, but the drawings show a 36 inch cylinder, and John Southern's List of Books and the Drawing Office Index both state that it was a 36 inch cylinder. This engine was replaced by the 48 inch "Eastern Engine" in 1818 [see Portfolio 5/1089b].
See also: Incoming Correspondence (from Robert Mylne).
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