| Description | Mints and Mint Engines (8 items).
XO: 40 horse power crank engine, with 32½ inch cylinder, 6 foot stroke, parallel motion, cast iron beam, cast iron connecting rod.
GZ: 14 horse power independent crank engine, with 22 inch cylinder, 3 foot stroke, parallel motion, cast iron beam, cast iron connecting rod.
Partially coloured duplicate and reverse plan of the engine houses and boilers, longitudinal section of the 40 horse engine house and boiler, longitudinal section of the 40 horse engine house and boiler, cross-section of the engine houses, cross-section of the engine houses showing the wells. All the drawings bear letter codes.
Original Portfolio or 'Book' No. 740. Catalogue of Old Engines p. 160.
For the Calcutta Mint. The 40 horse engine was the first of two engines that powered the rolling mill [for the second see Portfolio 5/707c below], while the 14 horse engine drove the workshop, triturating and other machinery and apparatus.
See also: 4/95 (Engine Order Book No. 9).
Incoming Correspondence.
Portfolio 6/7 (new cylinder for the 40 horse engine).
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