It's a ground anchor. Modelled after a British Army tank recovery anchor.
@Big Vern could probably advise as to the quality of my copy.
There's four stems of ash in the background of the last pic. Surrounded on three sides by things that myself and my neighbours are mildly appreciative of.
I want a pull on them when cutting them, and the I'd rather not dig the lawn up pulling when the driveway is just there.
Rope through the pulley and can pull at 90 degrees to the falling trees.
Had the stakes so a few minutes with the plasma and welder have an anchor that will cope with a lot more than the bit of traction the Davey Brown will make.
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