Vintage Williams 'Locking' Adjustable Wrench

This is my 12" JH Williams Superjustable.
It has a locking feature, where by pushing a pin, you can lock the jaw from opening or closing.
The animation in the video was created from images in the original patent document.

1953 Patent:
https://patents.google.com/patent/US2719449A

00:00 Intro
00:28 How it Works
01:11 History
01:58 Outro