The Blake's Hitch is a friction hitch commonly used by arborists and tree climbers as an ascending knot. Unlike other common climbing hitches, which often use a loop of cord, the Blake's hitch is formed using the end of a rope. Although it is a stable knot, it is often backed up with a stopper knot, such as a figure-of-eight knot, for safety. It is used for both ascending and descending, and is preferred by many arborists over other hitches, such as the taut-line hitch, as it is less prone to binding.
To allow a climber to be supported on a doubled rope system, with the ability to ascend and descend by moving the knot one way or the other.
This knot can be tied with either a split tail or within a closed system.
This knot has aged within the industry as many more hitches that are better, smaller and can be tended by pulleys are being used.
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