| Description | 95. H. M. Steam Ship Vulcan (HA & HB). Nov. 1845-Apr. 1846, Jun., Oct. 1846, Feb., Mar. 1847, Dec. 1848, Feb., Apr. 1849, Oct. 1850, Apr. 1851. 69 items.
Two 350 horse power oscillating engines, each with two 52 inch cylinders with 3 foot strokes.
Plan and section of tubular boilers - partially coloured original and partially coloured reverse drawings; section of one of the side boilers, section of the tubular boilers - partially coloured reverse drawings.
Cylinder and slide - partially coloured original and partially coloured reverse drawings; cylinder and slide, section and end view of the cylinders - partially coloured reverse drawings.
Crank shaft etc. - coloured drawing; headstock frame - coloured original and coloured reverse drawings; section of air pump and condenser, hot water cistern etc., condenser etc. - partially coloured original and partially coloured reverse drawings; slide valve, section and plan of feed and brine and blow off pipes - coloured original and coloured reverse drawings; section at aft front of boilers showing feed and blow pipes - partially coloured original and partially coloured reverse drawings; feed and bilge pumps - 2 partially coloured original and 2 partially coloured reverse drawings; eccentrics etc. at half their motion - coloured reverse drawing.
Sections of the sleeper plates - coloured drawing; plan of the engines and boilers - coloured original and partially coloured reverse drawings; longitudinal section of the engines and boiler - coloured original and partially coloured reverse drawings; cross-section of the engines - coloured original drawing; longitudinal section and plan of the propeller shaft - coloured original and coloured reverse drawings.
Apparatus for resisting the thrust of the screw - coloured drawing (not coded); waste water stop valve pipes etc. - coloured original and coloured reverse drawings; section and end view of cylinders etc., section of expansion valve, cylinder and covers, cylinder connecting rods, cylinder cross bar, brine pumps, air pump connecting rods - partially coloured original and partially coloured reverse drawings; eccentrics and link at half motion of the valve - coloured reverse drawing; altered arrangement of feed pumps, partially coloured original and partially coloured reverse drawings; sketch of apparatus for raising eccentric link - 2 coloured original and 2 coloured reverse drawings; proposed Indian rubber valve - coloured original drawing. All these drawings bear letter codes.
Also the following uncoded drawings, rough sketches etc.:
Expansion gear - partially coloured drawing; connecting rod for feed pumps - 2 small partially coloured sketches stuck together; shafts for raising eccentric link; eccentric for working brine pumps.
Also list of "Weights of the parts of the Vulcan's engines sent to the National Exhibition, Apr. 1851"; Maudslay's expansion gear for 400 horse engines, as fitted - partially coloured tracing, not dated; eccentric pin and slide guide, sketch of open slide valve rod to clear larboard air pump guide - 2 tracings of 1849 drawings made much later.
For H. M. Navy. These engines were originally made for H.M.S. Vulcan, but they were never fitted in her. The engines were shown at the Great Exhibition of 1851 before being fitted in the James Watt.
See also: Portfolio 6/48) (engines as fitted in the James Watt). |