| Description | Vacuum and Blowing Engines (15 items).
Double-acting engine, with 33 1/3 inch cylinder, 7 foot stroke, parallel motion, cast iron beam.
Coloured original and reverse general view and plan of the engine and boilers; coloured original and reverse plan of the engine house and boilers, gland in the lever wall, longitudinal section of the engine house and cross-section of the boiler house and boilers, longitudinal section of the boiler house, cross-section of the engine house, view of the lever wall (reverse only); working gear - coloured original and reverse front and side views; original portfolio cover, with small sketch section of boiler mounted inside. All the drawings except the last 2 items bear letter codes.
Original Portfolio or 'Book' No. 511. Catalogue of Old Engines p. 270.
For Joshua Walker & Co. Holmes Iron Works, Rotherham, Yorkshire.
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