prov:value
| - Prior devices used for releasably coupling cables, chains and other devices are illustrated in U.S. Pat. No. 227,793 to Kingston, U.S. Pat. No. 1,262,974 to Pearen, U.S. Pat. No. 1,299,821 to Carpmill and Hancock, U.S. Pat. No. 1,386,561 to Foster, U.S. Pat. No. 1,684,322 to Itjen, and U.S. Pat. No. 3,952,382 to Vaage.
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