Farmer's loop

Farmer's loop
Names	Farmer's loop, Wireman's knot
Category	Loop
Related	Alpine butterfly knot, Artillery loop, Span loop
Releasing	Non-jamming
Typical use	Climbing, agriculture
ABoK	#1054, #1056, #2565

The farmer's loop is a knot which forms a fixed loop. As a midline loop knot made with a bight, it is related to several other similar knots, including the alpine butterfly knot and artillery loop.

If pulled from one end and that ends continuation [?????] into the loop while not tightened it may capsize to a slip knot with a complicated and heavy knot.

It is tied on one hand to make a loop about twice the size of that hand (use fingers for a smaller one, thumb-hook-to-elbow for a large one), as follows:

Cornell University professor Howard W. Riley published this knot in an agricultural extension pamphlet devoted to farming knots in 1912. He was shown the knot by a farmer at the 1910 Genesee County Fair in Bativia, New York. Riley noted that he had never seen the knot described in any reference book.

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Wikipedia