| http://www.w3.org/ns/prov#value | - eventing said chain link from inadvertently escaping from said slot, said locking device being retained in a threaded bore defined on the prong of said hook, said locking device projecting into the mouth part of said slot, the longitudinal axis of said bore extending essentially perpendicular to the longitudinal axis of said mouth part of said slot, said locking device including a ball which is th
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