Originally Posted by Parabola
[Linked Image from i.imgur.com]

For more information of Bonehill’s Patent Clip lump please see the excellent article by John Campbell II in DGJ volume 32 issue 3 ((Autumn 2021) which includes this helpful illustration of the read end view as set out in the patent application.

Thanks for posting this info.
I never knew this went as far back to 1884

Upland, grouse, woodcock