Hunter's bend, also known as rigger's bend, is a knot used to secure two lines. It consists of 2 interlocking overhand knots. The knot can jam under even moderate strain.
Hunter's bend is one of the most recent knots to be discovered. Named after Mr. Hunter, a British man who used it for years to tie broken shoelaces before discovering its originality through a friend in the 1970s, when it made national TV news.