| Description | Pumping and Canal Engines. (35 items).
566. John Sparrow & Co., Cockshead Colliery, Norton-in-the-Moors, near Burslem. Mar.-May, Jul. 1792. 35 items.
Double-acting engine, with 48½ inch cylinder, 8 foot stroke, parallel motion, unequal beam, separate air pump beam.
Reverse general view of the engine, reverse plans and sections of the engine and round and long boilers, outer and inner pump rods and V bob in its hole; reverse plans and sections of the engine house and inner pump shaft; nozzles - reverse drawing; plan and sections of long boiler, boiler stay ends, damper plate and frame, bearer bars, fire door and frame (reverse drawing); working gear - partially coloured reverse front and side views; injection gear - partially coloured reverse front and side views and plan; arms, catches, detents, hands, spindles etc. for the working and injection gear - reverse drawings; working beam - partially coloured reverse drawing showing connection to inner and outer pump rod, parallel motion etc.; great perpendicular links, parallel bars, regulating radius, little perpendicular links, piston rod cap, brasses, top of the inner pump rod, gudgeons and plummer blocks etc. - reverse drawings; views of the V bob, plan and end view of the parallel motion, view of the outer and of beam and top of outer pump rod - partially coloured reverse drawings; plan of the working beam - reverse drawing; perpendicular steam pipes, condenser, steam pipes, eduction pipe, blowing pipe, plummer block for the outer end of the air pump beam, air pump rod cap - reverse drawings; reverse plan of the "real situation of the boilers". All the drawings bear letter codes.
Original Portfolio or 'Book' No. 173. Catalogue of Old Engines p. 288.
For John Sparrow of Bishton and John Repton of Norton, two of the proprietors, and William Adams and Benjamin Godwin of Cobridge, trustees and executors of John Hales of Cobridge, the third proprietor. For Cockshead Colliery, Norton-in-the-Moors, Staffordshire.
See also: Engine Agreements, Incoming Correspondence.
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