Società Privilegiata de Battelli a Vapore in Milano Steamer Virgil, 1827, 1828, 1831

Steam Boat Engines (25 items).

1217. Società Privilegiata de Battelli a Vapore in Milano Steamer Virgil (QF & QG). Jul., Dec. 1827, Jan. 1828, Jan. 1831. 25 items.
Two 18 horse power side lever boat engines, with 26½ inch cylinders, 2½ foot strokes.

Section and plan of the boat and engine (this drawing is similar to the "draft" drawings in the Steam Boat Box); section and plan of boiler and chimney - original, reverse and direct copy drawings made in the London office; cross-section of the boat and engines, longitudinal section of the engine room, general plan of the engine room and gangway, plan of the engine room sleepers, plan of the engine room platform, plan of the engine deck beams, side view of paddle case and gangway wale - reverse drawings made in the London office; plan of the engine room and boiler, longitudinal and cross-sections of the engine room - coloured original and partially coloured reverse drawings; cross bars - shaded drawing; paddle wheel and shaft - partially coloured original and partially coloured reverse drawings; load valve for feed pipe - coloured original and coloured direct copy; upper headstock frame, working gear - partially coloured original and partially coloured reverse drawings. All of the drawings except the first item and those made in the London office bear letter codes.
Also sections and plan of the cylinder, Jan. 1831 (drawing also used for a Lake Constance boat). This drawing bears a letter code.

Original Portfolio or 'Book' No. 824. Catalogue of Old Engines p. 318.

For the Società Privilegiata de' Battelli a Vapore in Milano. The company was often referred to as "The Milan Steam Boat Co." or "The Milan Privileged Steam Boat Co." Several of the drawings were sent to a Mr. Mossotti in Italy, and the agents in London were Doxat & Co. of London. The boat worked on the River Po. It was initially referred to as the "Pavia steamer" until it was named Virgil.