| Description | Components and Parts of Boat Engines and Boat Engines for Land. (3 items).
1419. Parallel Motion. 1816, 1817. 3 items.
Parallel motion for 14 horse boat engine - partially shaded drawing, Feb. 1816.
[Used for the Caledonia, J. B. Humphreys, J. A. Droop, River Po Steam Barge, Lake Neufchatel Steamer.]
Parallel motion for 60 horse boat engine - press copy sketch, Feb. 1817.
"Parallel motion for the 2nd 60 horse boat engine" - sketch, Jun. 1817. |