I could give you the name of mine but it would mean nothing to you, it is a Selecta brand. Basically it is 2 parallel PVC pipes mounted on a frame that is drawn by the tractor linkage, a 20 litre container sits above it and gravity feeds the 2 to 1 mix of glyphosate, there are numerous rope wicks that cross diagonally between the 2 pipes, they sag down a bit.
It works well but I would only get it out for a big job, takes a bit to set it up and quite a bit to clean it up afterwards. Occaisionally I would snag a rope and pull it out of the pipe so you gotta be watching all the time otherwise your drum of glyphosate is gone. It did the job with the problem I had at the time.
Ken