| Description | Mints and Mint Engines (31 items).
EP: 50 horse power crank engine, with 36 inch cylinder, 6 foot stroke, parallel motion.
ER: 20 horse power crank engine, with 23¾ inch cylinder [?], 5 foot stroke, parallel motion.
Also mint and rolling mill machinery etc.
Reverse drawings, Apr. 1802: cross-section of the 20 horse engine house showing cylinder framing, plan of the two engine and boiler houses (this plan shows part of the rolling mill, shafts, etc.), longitudinal section of the 50 horse engine house and cross-section of boiler house, cross-section of the 50 horse engine house and longitudinal section of the 20 horse engine house, plans of the two engine houses and plan of the 50 horse engine house at the spring beams, plan of the lower story of the mint (coloured original drawing, with more detailed plan of the building for the engines and boilers houses stuck on, and external elevation of that building; the rooms of the engine building have been given letters, and these letters correspond to letters on the other drawings); cross-section of the 20 horse engine house showing main uprights and section of boiler house, cross-section of the 20 horse engine house showing framing and outside view of the boiler house, drawings of the cisterns, outside view of the 50 horse engine lever wall etc., different views of the roll frames and rolling apparatus, plans and sections of the coining room, sections of the reverberatory furnaces.
Reverse drawings, May-Jul. 1802: plan of the 50 horse engine cylinder and boiler tops, general view of the 50 horse engine, cross-section of boiler, plan of the 50 horse engine and boiler and part of rolling mill, plan of the 50 horse engine beam etc.,
plan of the 20 horse engine and boilers, edge view of the 20 horse engine fly wheel, part of general plan of the mint showing pipes etc., front view of the 20 horse engine and cross-section of boilers, longitudinal section of boiler, front view of the 50 horse engine. All these drawings bear letter codes.
Also the following uncoded drawings, rough sketches etc.: plan and section of part of the cutting out machinery - original and reverse drawing, 8 May 1800; part of wheel; plan of part of the mint with various pencil notes and amendments; plan of rolling mill and machinery and nearby rooms (foundry, crushing, engine house and annealing furnaces); partially coloured plan of rolling mill machinery; "scale of feet for the Russian Plan"; coloured elevations and plan of the mint building and canal; original portfolio cover, with plan of part of the mint showing engine house marked "came with their letter 13 Apr. 1799" stuck inside.
Original Portfolio or 'Book' No. 336. Catalogue of Old Engines p. 162.
For the Russian Mint, St. Petersburg. The 50 horse engine EP drove the rolling mill, and the 20 horse engine ER worked the coining machinery.
See also: M. R. Boulton Russian Mint Correspondence.
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