| Description | General Boat Engine Drawings (18 items).
1280b. "Schemes" and General Drawings of Boat Engines. 1815-1818, 1820, 1822, 1842, 1843, 1845, not dated. 18 items.
"Scheme for 6 horse boat engine" - side view of engine, Feb. 1815.
[This drawing shows an engine similar to those made for the Clyde steamers in 1813-1814 (see Portfolio 5/1259), but with the cylinder mounted above the boiler].
Plan of 30 horse bell crank boat engine - reverse drawing, Jun. 1816.
End view and longitudinal section of a boat [?] engine with a 6 horse cylinder - partially shaded drawing, not dated [1810s?].
Side view of 20 horse side lever boat engine - partially shaded reverse drawing, Sep. 1817.
Sketch plan of 2 30 horse engines in a boat - reverse drawing, Aug. 1818.
General side view of 50 horse side lever boat engine, Oct. 1820.
Side view of 60 horse side lever boat engine - partially coloured drawing, Jan. 1822.
"Scheme for 60 horse Boat Engines" - coloured drawing marked "D-N-D" [Damned], Sep. 1822.
Side view and plan of a side lever engine - unmarked partially shaded drawing, not dated.
Side view and plan of 10 horse side lever boat engine - coloured original and coloured reverse drawings, not dated.
"Scheme for Oscillating Engines, 2 60 horse power" - partially coloured tracing, Feb. 1842.
Side and front views and plan of double cylinder beam engine, circa 1843 [?].
Sketch of 30 horse engine for Capt. Hay's schooner - press copy drawing, Mar. 1845.
Side view of side lever boat engine and boiler - partially coloured drawing, not dated.
"Elevation of Machinery on board the Tartar Steam Vessel" - drawing with key of beam engine, not dated.
Unmarked draft drawing of a boat engine, not dated.
Side and front views of a side lever boat engine, not dated.
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