| Description | Steam Boat Engines (7 items).
1259. Clyde Steamers Prince of Orange (ZAK) and Princess Charlotte (ZAL) - "Glasgow Boat Engines". Aug.-Dec. 1813, Mar. 1814. 7 items.
Two sets of two 4 horse power boat engines with 13 inch cylinders, 2 foot strokes, cast iron beams.
Cross-section of the boat and engines and plan of the engines (marked as being for Princess Charlotte), side view of engine and section of the boiler and fire place - reverse drawings; main lever, links and rods etc. - partially coloured drawing; sketch of hot water pumps and rods etc. (a press copy of this sketch is included in the set below); sketches of top of boiler and scheme for cylinder (2 sketches stuck together). All these drawings except the hot water pump sketch bear letter codes.
Set of press copy drawings - 9 sheets originally sewn together [?], with various press copy drawings stuck on them, including 2 side views of alternative designs for engines by William Creighton, boiler, air pump, side view and plan of engine (very faint), front of the boiler, condenser and hot water cistern, chimney pipe, cylinder (drawing shows a 14¾ inch cylinder), wrought iron crank shaft, fire places for the second boat (Prince of Orange), blowing and injection apparatus, hot water pumps, slide valve case, injection cock, eccentric crank and rod and sliding cap and lever, guides for piston rod, working gear etc. All the drawings are marked as being for "boat engines" except the fire places marked as being for the second boat, and several bear letter codes.
Small sketch plan of the Prince of Orange's boiler.
Original Portfolio or 'Book' Number 661, 668. Catalogue of Old Engines p. 310.
For the Clyde Steam Boat Co. These early boat engines were of an unusual design - the cylinders were placed inside the boiler, and the beam pivoted at its far end. The air pump rod was virtually in the centre of the beam, while the rods for driving the cranks were close to the cylinder end of the beam. The codes ZAK and ZAL was used to refer to each pair of engines. The exact original contents of this 'book' are unclear - Book No. 661 is listed in the Drawing Office Index as containing drawings for the "Glasgow boat engines", while specific drawings for the Prince of Orange are described as being in Book No. 668. These engines are referred to in Engineering, 4 Feb. 1881 and The Engineer, 1888, p. 516.
See also: 4/94 (Engine Order Book No. 8).
Portfolio 7/26 (sketch elevation, plan and section of the boats). |