This should interest the guys that like to gather and process their own wood from the forest.
I've known about these (there are others) for some time, but seldom seen one. I was lucky enough to find this in a bunch of old junk.
Patented in 1925 by J. Webber from Vancouver, WA. Patent 1,533, 579.
The idea was to fill it with black powder, drive it into a pilot hole in the end of a log, stick a fuse in the hole and light 'er off.