Below are a couple of shots of the 1D foot.
In the first photo you can see the "arm" that slips between the legs of the foot:
And here you can see the mechanism behind the foot: the whole thing swings down for use and back up and out of the way when you don't need it:
This is the beginning of re-purpose project. I've taken apart a coat of my aunt's from the 60's to make a Chanel style jacket. Can't wait to finish it and for it to cool off enough for me to wear it!