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Description: | A complete lead or lead alloy pump clack dating from the Modern Period (circa AD 1900s)This object would have formed part of a crude non-return valve from an old water pump. The object is formed from a solid sub circular disc of lead or lead alloy, with a mushroom shaped extension protruding just off centre. The mushroom piece fitted through a slot in a leather strap inside the box. When water was drawn up the pipe into the box with the spout, the clack lifted to let the water in and then fell back over the hole so that it ran out through the spout into the bucket and not back into the well.These were in use over many centuries circa 1500's to early 1900's , although there may still be a few relics in use on outlying farms. Every village and farm house had a pump or well until water was laid on to the villages in the late 19th and early 20th centuries.The object measures 82 mm in diameter, and has a thickness of 4.9 mm (maximum thickness (including mushroom protrusion: 12.8 mm). It weighs 317.3 g.The object is a mid grey in colour and has an even patina. Abrasion caused by movement whilst within the plough soil may have resulted in the loss of some of the original surface detail.Several similar pump clacks or weights have been recorded on the PAS database, including: WILT-9D49B2; NLM-B17A80; NLM-906357 and NLM-131723.
Original Image | Publisher: | http://finds.org.uk | Source: | Portable Antiquities | Identifier: | http://finds.org.uk/database/artefacts/r... | Go to resource |
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