| Description | 8 horse power double-acting sun & planet engine, with 16 inch cylinder, 4 foot stroke, parallel motion.
Includes coloured original and reverse general view of the engine and engine house, coloured original and reverse plans and sections of the engine, engine house, boiler, winding barrel and spiral and pit framing, engine framing; boiler - coloured original and reverse plans, sections and front view; winding spiral - reverse side, vertical and underside views, vertical view showing rim, cross-beams and straps; parallel motion - coloured original and reverse copy marked "From Mr. John James's" and "a drawing LH taken from this, sent to Soho 9 Nov. 1789"; working gear - coloured reverse plans and front and side views dated May 1788, front and side views dated 8 Mar. 1788, pawl (or catch) dated Mar. 1788; injection gear - coloured original and reverse plan and side view; working barrel, air vessel, spiral shaft, sockets, gears and shaft for the gin barrel, weights for the spiral, pulley rims; ground plan of alteration to pump position; memorandum on counter position for kibbles, 17 Sep. 1788; calculations including re-design of the engine, partly in James Watt's hand.
Original Portfolio or 'Book' No. 102. Catalogue of Old Engines p. 56.
For the Duke of Devonshire. Winding engine for Ecton copper mine, Staffordshire. Ecton Mine is located 12 miles South West of the Chatsworth Estate.
See also: Incoming Correspondence.
Published references: Dickinson & Jenkins, p. 252. |