| Description | Sun and Planet Engines. (28 items).
242a. Salford Twist Co., Salford, No. 2 (ST). Oct. 1795, Oct. 1798-Feb. 1799, Jun. 1799, 1803. 28 items.
30 horse power double-acting sun & planet engine, with 28 inch cylinder [?], 6 foot stroke [?], parallel motion.
Reverse general view of the engine, showing position of cylinder of engine no. 1 and position of 48 inch cylinder from 1803 alterations, reverse plans and sections of the engine showing position of boilers; reverse sections of the engine house and framing, dated Nov. 1798 (2 of the drawings have been crossed out); reverse plan and sections of the engine house and framing (on the reverse of the longitudinal section is a drawing of a crank engine with a brake wheel); cistern - reverse drawings; working gear - reverse front and side views dated 22 Dec. 1798; nozzle work - reverse drawings; working gear - reverse side view dated 31 Dec. 1798; drawing EEI [sliders?] - original and reverse; top of the cold water pump - reverse drawings, with a press copy drawing of parallel motions of cold and hot water pumps stuck on the reverse (this was probably for the "Alteration Engine"); apparatus for moving sliders - reverse drawings; working gear - coloured reverse front and side views dated 9 Feb. 1799; uncoded front and side views of method of guiding the plug, Jun. 1799; rough sketch plan and section "for Salford New Engine", 22 Oct. 1798, showing location of old engine and 2 new boilers; original portfolio cover, with press copy sketches of racks and wheels for moving the sliders and of pillar tops stuck inside. All the drawings except those of the plug guide and the 1798 sketches bear letter codes.
Also in this portfolio is a drawing of Lee's apparatus for putting hot steam into the steam case of his engine, dated Oct. 1795.
Original Portfolio or 'Book' No. 316. Catalogue of Old Engines p. 16.
For the Salford Twist Co. Cotton mill, Salford. The firm later became Philips Wood & Lee, and then Philips & Lee. George Lee originally ordered a 20 horse power engine for the firm, but changed the order to a 30 horse in Dec. 1798. This engine was erected alongside the firm's first 30 horse engine [see Portfolio 5/63] and connected to it. It was at work by Aug. 1799. Lee offered to experiment with automatic expansion gear designed by Peter Ewart on this engine, but according to Dickinson & Jenkins the trial was not carried out [pp.188-9]. In 1803 the two 30 horse engines were altered and combined with a new 48 inch cylinder to form the "Alteration Engine", which appears to have been called "Pluto" by the firm. The leftover 30 horse cylinder from this engine was sold to John Pooley [see Portfolio 5/158].
See also: Incoming Correspondence, Lee Correspondence (Muirhead).
[Note that Dickinson & Jenkins fail to distinguish between this engine and the 100 horse engine below. The "Salford Twist engine's" eccentric gear and beam referred to on p. 172, 189 and 203 actually refer to the 100 horse power engine, not this engine as Dickinson & Jenkins imply.] |