Rambler gate.
https://s3-us-west-1.amazonaws.com/h...bler_gate1.jpg
https://s3-us-west-1.amazonaws.com/h...bler_gate2.jpg
More: https://en.wikipedia.org/wiki/Rambler_gate
Previously:
https://www.homemadetools.net/forum/...123#post145396
https://www.homemadetools.net/forum/...008#post145008
https://www.homemadetools.net/forum/...519#post135921
https://www.homemadetools.net/forum/...902#post140544
https://www.homemadetools.net/forum/...375#post138931
https://www.homemadetools.net/forum/...196#post134710