I am interested in the Henderson double rear brake. I understand this was developed sometime around 1917 by Hendersons, and then when Excelsior purchased Henderson, they received a royalty for this brake design until sometime in 1918.
I can find no descriptions or images of this brake design. The reason I am interested is that I have a model of a double brake design which I was told was the Henderson brake design. It is possible this might have been a patent model or possibly a salesman sample, but would like to find out if it is actually a model of the Henderson brake.
