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Agnes |
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A horizontal, tandem, compound, condensing engine, which was built in 1909 by Pollit & Wigzell , Sowerby Bridge, Yorkshire. It was commissioned by J.A.S. Watkinson & Sons Ltd. to run the machinery in their woollen mill at Washpit Mill, Holmfirth, Yorkshire. The engine was ordered as 500 HP at 70 rpm with a steam pressure of 120 psi, at an initial cost of £1637. Some time during her working life Agnes was upgraded to 700 HP, by increasing the working steam pressure to 160 psi and increasing the speed to 80 rpm. |
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On 16 Jan 1980, after some 70 years of hard toil, the engine was stopped, Westwood Yarns being the owners at that time.
The Rescue & Rebuilding of Agnes
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Technical Details |
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| Type of Engine:- | Horizontal, tandem, compound, condensing |
| Builder & Year:- |
Pollit & Wigzell, Sowerby Bridge,Yorkshire 1909 |
| Cylinder sizes:- |
High Pressure (HP) is 18ins diameter Low Pressure (LP) is 35ins diameter |
| Stroke:- | 48 ins. |
| Valves:- |
Corliss valves on both the HP and LP cylinders. Unusually, there are three eccentrics. One operating all the inlet valves, the other two operating the HP and LP exhaust valves respectively. |
| Flywheel:- |
The ropewheel is 16 ft diameter, 40ins wide and weights in the region of 25 tons. It has 8 spokes and segments with 18 rope grooves to drive 1.75ins diameter cotton ropes. |
| Governor:- |
A Lumb governor controls the cut off to the HP inlet valves only, (originally a 4ins Whitehead governor was fitted). The cut off to the LP inlet valves is set manually. |
| Other Information:- |
A Pollit & Wigzell, in line, condensing air pump, 18 ins bore, was fitted from new. |
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For further information about Agnes, there is a A4 paper backed book, 'Agnes, a 500HP Corliss Valve Steam Engine', by PJM Southworth, on sale in the museum or from the author at Southworth Engines, 6 Kennet Vale, Chesterfield. Tel 01246 279153
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