Christopher Gullett, Beer Ferris Mine, 1787

Cornish Mine Engines (6 items).

1282b. Christopher Gullett, Beer Ferris Mine. Oct. 1787. 6 items.
13 horse power double-acting sun & planet engine, with 20 inch cylinder, 4 foot stroke, parallel motion. Engine formerly belonged to Wheal Mount.

Side view and plan of the engine and pump beams etc., various components - original and reverse drawings; side view of the rods and wheels for working pumps - reverse drawing; "method of making a joint to work 2 sliding rods from 1 crank pin" - reverse drawing; plan of rods and wheels for working pumps - coloured unmarked drawing; memorandum re the amount of water to be lifted (in James Watt's hand).

Original Portfolio or 'Book' No. 88.

For Christopher Gullett, Beer Ferris Mine, Devon. This engine was one of the "small engines" sold through the agency of Boulton Watt & Co. Cornwall, a partnership between Boulton, Watt, Thomas Wilson and William Murdock established in 1785. Gullett bought the engine from Wheal Mount through Boulton Watt & Co. Cornwall in 1787, and converted it to a rotative engine with sun and planet gear. According to Dickinson & Jenkins [p. 341] the engine had been destroyed by fire by 1794. However, according to the List of Engines made at Soho, the engine was later worked by a Mr. Crawshay and sold by him to Boulton & Watt in 1799 in payment of his premium. It was then sold by Thomas Wilson to Hercules Mitchell & Co. and erected near Plymouth. The drawings made for Gullett and those for the Prince George Mine engine [see Portfolio 5/1282a above] were kept in one book, which was titled "Little Engines - Prince George - Boulton Watt & Co. Cornwall".

See also: Portfolio 5/1305.
Incoming Correspondence.