General view of 6 horse crank engine for John Sparrow & Co., Cockshead Colliery, Norton–in–the–Moors, near Burslem, Staffordshire, August 1793.
This was the second engine supplied to Cockshead Colliery in Staffordshire. It was a winding engine, and used a crank rather than James Watt’s sun and planet wheels to produce rotative motion. The crank was the subject of a patent taken out by James Pickard, dated 23rd August 1780, which expired in 1794. Therefore this engine technically infringed the existing patent.
This drawing is part of the Archives of Soho, held at Birmingham City Archives [Ref. MS3147/Portfolio/5/246]
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Donor Ref: '
MS3147 5 246
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