| Description | Steam Boat Engines (9 items).
1236. J. B. Humphreys No. 1, Prinzessin Charlotte (DI). Jan.-May 1816. 9 items.
14 horse power side lever boat engine, with 23½ inch cylinder, 2½ foot stroke.
Sections and plan of the cylinder - reverse drawing; cross-section of the boat and engine and boiler, side view of engine, plan of the engine and boiler - 3 partially coloured reverse drawings on 1 sheet; parts of the engine (shafts, cross-bars, support for eccentric shaft and regulating radius), main levers and gudgeons and connecting rods - reverse drawings; cross-section of boat and engine and boiler, side view of engine and paddle wheel, plan of engine - original and coloured reverse drawings; small sketch plan of boiler; sections and plan of the boat showing cabins, bulkheads, stairs etc. (4 drawings on 1 sheet marked "from Mr. Humphreys' drawing"); 2 sections of the boat (the first section appears to be of a boat with 2 paddle wheels and may be for the second or fourth engines ordered by Humphreys - see Portolios 5/1237a & b); list of duplicates, tools and raw materials (in James Watt Jr.'s hand). All the drawings except the last 4 items bear letter codes.
Original Portfolio or 'Book' No. 691. Catalogue of Old Engines p. 312.
For Patiente Dampschiff Gesellschaft, Germany. J. B. Humphreys of Manchester was the agent. Prinzessin Charlotte was the first paddle steamer in Germany, and worked between Potsdam and Berlin on the River Spree, and on the rivers Elbe and Havel. The boat was driven by a single paddle wheel, which was mounted in the centre of the hull, flanked by the engine and boiler.
See also: 4/95 (Engine Order Book No. 9). |