Jack chain
Type of chain
A jack chain is a type of chain made of thin wire, with figure-eight-shaped links and loops at right angles to each other. Jack chains are often used to suspend fixtures such as lights or signs, for decorative purposes, or as part of a cable lock.
Jack chain may be manufactured as either single-jack chain or as double-jack chain. If double-jack, the lower loop is formed of two strands of wire rather than just one as in a single-jack.
Before the days of lavatory cisterns being close to the pan, jack chains were often used to release the cistern plug.
01Other meanings
A jack chain is a tool attached to a toothed chain for moving logs.
Sources and credits
This article is adapted from the Wikipedia article “Jack chain”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Jack chain.JPG by Tenbergen (talk), CC-BY-SA-3.0
- Double jack chain.jpg by KDS444, CC BY-SA 3.0
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