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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. ==History== The first known presentation of this knot was made by Heinz Prohaska in an Austrian guides periodical in 1981; in 1990, he presented it in a caving journal, ''Nylon Highway''. Separately, Jason Blake discovered the knot for himself and presented it to the arborist community in a letter to ''Arbor Age'' in 1994, after which it was enthusiastically adopted by arborists. It has since become well known under the name "Blake's Hitch". 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Blake's hitch」の詳細全文を読む スポンサード リンク
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