Pool Mine, Oct., 1780

Cornish Mine Engines (15 items).

1297. Pool Mine. Oct., Nov. 1780. 15 items.
Single-acting engine, with 60 inch cylinder, 9 foot stroke, chain connection.

General view of the engine - reverse drawing; inside front view of the engine and cross-section of the round boiler; outside front view of the engine - reverse drawing; ground plan of the engine and boiler - reverse drawing; first floor plan of the engine and boiler - original and reverse drawings; plan and side view of the working gear; air pump valves; eduction pipe foot valve; mounting for the hot water pump clack; mounting for the hot water pump bucket; mounting for ? - unmarked original and reverse drawings; eduction pipe - reverse drawing; steam pipe and gudgeon - reverse drawing.

Original Portfolio or 'Book' No. 12. Catalogue of Old Engines p. 302.

For Pool Mine. The agreement was made by William Harris and Thomas Kevill for the adventurers. According to the List of Engines made at Soho, the engine was stopped in Apr. 1784 and sold to Chacewater Mine, where it started work in May 1785. It was stopped in Mar. 1789. It was later sold to the United Mines, who erected it at Poldory Mine, where it replaced both Poldory's original 48 inch engine and the 30 inch engine which had originally come from Chacewater (Wheal Busy) [see Portfolio 5/1295]. It began work at Poldory in Dec. 1794, and it was still at work there in May 1798.

See also: Engine Agreements.