Don Pasqual Mensa y March, Cadiz, 1789

Sun and Planet Engines. (29 items).

240. Don Pasqual Mensa y March, Cadiz (BWM). Apr., May, Jul., Nov. 1789. 29 items.
50 horse power sun & planet engine, with 34 inch cylinder, 8 foot stroke, parallel motion.

Includes: General view of the engine, plans and sections of the engine and boiler, showing two fly wheels and space for spare boiler; back view of the engine house and longitudinal outside view of boiler.
Also several drawings of components of the engine including: air pump rod and connecting rod, plan of air pump and condenser, condenser and water trap, boiler stay ends (full size), boiler tubes; parallel motion (marked "from Albion Mill No. 2"); working gear - coloured front and side views and plans, ketches; fly wheel and shaft, millstone spindles, plummer blocks, shafts etc.
Drawings of the mill and millwork: plan of the hurst floor, fly wheels and rotative motion; plan of the millstone, catch machine and pastry floors; plan of the dressing mill and wheat machine floors; general view of the building and millwork; wheels, pinions etc. for millstones, wheat machines etc. Almost all the drawings are reverse copies and bear letter codes.
Also unmarked floor plan showing grindstones, location of engine and boilers etc. (smaller scale than the above plans); unmarked plan and elevation of the mill.

Original Portfolio or 'Book' No. 117.

For Don Pasqual Mensa y March. Flour mill, Cadiz. The engine was usually referred to by its code, "BWM", which may have stood for "Boulton & Watt - Mensa". The negotiations over this engine were extremely protracted, and it does not appear that the engine was actually shipped to Spain until 1791. This engine was omitted from the Catalogue of Old Engines.

See also: Incoming Correspondence, Engine Agreements.