| Description | Pumping and Canal Engines. (5 items).
Single-acting engine, with 18 inch cylinder, 5 foot stroke, [chain connection].
Plan and section of conical valves and nozzle, Jan. 1776; section and plan of the cylinder and valves marked "Soho Old Engine with the proposed alteration, 18 Sep. 1779".
Drawings from circa Apr. 1781:
"Drawing of the Little Engine and of the Circular Machinery annexed to it" - side view of the engine and rolling machinery and plan of the rolling machinery; plan and side view of the framing.
Catalogue of Old Engines p. 284.
Engine originally erected by Watt at Kinneil. Re-erected at Soho Manufactory in 1774, the first steam engine to be erected there. The engine was used to pump back water to power the water wheel. From 1777 the engine was referred to as the "Soho Old Engine" or the "Little Engine" to distinguish it from the second engine erected at the Manufactory. After the second engine replaced it for pumping, this engine was applied to a forge hammer, and circa Apr. 1781, it was proposed that it should be applied to rolling metal for the copy press company.
Published references: Dickinson & Jenkins p. 110, 111.
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