| Description | Jan.-May, Sep.-Dec. 1869, Jan., Feb., Apr., May 1870.
High pressure engine, with 40 inch cylinder, 5 foot stroke.
Cylinder and steam case etc. - partially coloured original and partially coloured reverse drawings; main lever - partially coloured reverse drawing; entablature, spring beams, columns etc. - partially coloured original and partially coloured reverse drawings; pump beams etc., parallel motion for pump beams - partially coloured drawings; parallel motion for engine - partially coloured original and partially coloured reverse drawings; air pump and condenser - partially coloured reverse drawing (half of the sheet has been torn away); main pump, 22 inch diameter and 2 foot stroke - coloured reverse drawing; arrangement of delivery pipes and pump rods for main pump - coloured drawing; pipes adjoining surface condenser - - partially coloured original and partially coloured reverse drawings; bucket and clack - partially coloured reverse drawing; girders and distance pieces under girders for carrying pump and crank shafts - partially coloured drawing; 6 foot length of wrought iron pipe and pump rod - coloured drawing; distance piece carrying main pump and stand pipe - partially coloured reverse drawing; girders for carrying radius brackets for pump beams - partially coloured drawing; flooring plates - partially coloured drawing; sketch of well and pumps - coloured drawing; sketch of alteration of air pumps - partially coloured original and partially coloured reverse drawings. All the drawings bear letter codes.
Also copy of contract between James Watt & Co. and the Birmingham Water Works Co., Jan. 1869; original portfolio cover with newspaper cutting re extension of the water works stuck inside.
For the Birmingham Water Works Co. Pumping station, Perry Barr, Handsworth, Staffordshire.
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