| Description | B: Agreement for piece work with James Middleton for eduction pipes and sockets, rotative and crank shafts, connecting rods up to 20 horses, cranks cast in dry sand, sliding valve cases, 24 Jul. 1802; calculations of the expense of moulding; tables of weights of items cast; William Meadows’ proposal for casting small connecting rods etc.; Isaac Croft’s proposal for moulding shafts; calculation of the expense of moulding cylinders, air pumps and steam cases for 2 to 6 horse sliding valve engines, etc., 1802, 1803, 1808, 1810; calculations for casting gas lighting retorts, 1806—1811 (19 items). |