| Description | Mints and Mint Engines (13 items).
XP: 40 horse power crank engine, with 32½ inch cylinder, 6 foot stroke, parallel motion, cast iron beam, cast iron connecting rod.
WS: 24 horse power crank engine, with 26 inch cylinder, 5 foot stroke, parallel motion, [cast iron beam, cast iron connecting rod].
Partially coloured duplicate and reverse plan of the engines and boilers, longitudinal section of the 40 horse engine house and boiler, longitudinal section of the 24 horse engine house and boiler, cross-section of the engine houses showing the wells, cross-section of the engine houses, plan of the tunnels for these engines and for the 40 and 14 horse engines, cross-section of the 24 horse engine house showing the pumps; press copy sketch of 40 horse engine crank and shaft. All the drawings bear letter codes.
Original Portfolio or 'Book' No. 743. Catalogue of Old Engines p. 160.
For the Calcutta Mint. The 40 horse engine was the second of two engines that powered the rolling mill [for the second see Portfolio 5/707a above], while the 24 horse engine drove the cutting out machinery.
See also: 4/95 (Engine Order Book No. 9).
Incoming Correspondence.
Portfolio 6/7 (new cylinders for the engines).
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