A year or so ago i had found a wrench marked M.B. Skinner. After poking around a bit, I figured out it was likely for a pipe patch clamp they made. The clamp had a patent, which explained a bit.
Towards the end of last year I found an actual clamp, lost in the trunk of my car until today when I went looking for something else....
Patented in 1927....still has shiny green paint, and rubber gasket.
Now...if only i could remember where I put the wrench/
