Coalbrookdale, Shropshire, 1781

Single-acting engine with 66 inch cylinder, 9 foot stroke, chain connection, unequal beam.

General view of the engine, plan of the engine and 2 boilers, plan of the first floor, outside front view of the engine; ground plan, outside front view and section of the engine house; plan and section of the round boiler, section of the round boiler and seating and chimney; inside front view of the oblong boiler showing chimney and steam pipe with cross-section of the boiler on the same sheet, plan and sections of the oblong boiler; view of the upper side of the beam (coloured), condenser, cross pipe and upper nozzle, nozzles, copper eduction pipe (original and reverse copy); martingales, piston rod cap, beam straps etc. (all on 1 sheet); pump and cylinder chain links and adjusting screw; plan and elevation of tilt hammer marked "Drawing of old forge at Coalbrookdale"; plan of boiler [later drawing?].

Original Portfolio or 'Book' No. 22. Catalogue of Old Engines p. 286.

For Joseph Rathbone & Co. Coalbrookdale Iron Works, Shropshire. Rathbone & Co. were frequently referred to as "The Coalbrookdale Co." or "The Dale Co.", and this engine was sometimes called "The Dale Engine".

See also: Engine Agreements, Incoming Correspondence.