Jessons & Wright, Barnet’s Leasowe, 1797

Vacuum and Blowing Engines (17 items).

20 horse power double-acting engine, with 23¾ inch cylinder, 5 foot stroke, parallel motion.

Reverse general view and plan of the engine and boiler and blowing cylinder, front view of the engine, cross-section of the boilers, plan of the boilers and cylinders etc.; reverse general section of the engine house and boiler seating, plan of the engine house and boilers, outside view of the engine house and cross-section of the boilers, sections of the engine house, drawings of the cistern; blowing cylinder, nozzles etc. - partially coloured original and partially coloured reverse drawings; working gear - coloured original front and side views; blowing cylinder valves - original and reverse drawings; sections of the edge and centre of the piston (2 drawings, the earlier is marked "not sent"); blowing cylinder - partially coloured reverse drawings; nozzles and pipes for the blowing cylinder - original and reverse drawings; sketch of steam pipes etc. [?]; rough sketch of the site with river and locations of engines marked on and sketch section of an engine on the back. All the drawings except the last 2 items bear letter codes.

Original Portfolio or 'Book' No. 277. Catalogue of Old Engines p. 268.

For Jessons & Wright. Iron works [?], Barnets Leasowe, Shropshire.