Based on Harry's comments, it might be possible to start with the Brochardt drawings and cross-breed them with the 1874 drawing, plus pictures and maybe a patent drawing and come up with something similar. Won't be exactly like the original but you do get into the mind set of the original designer. Doing something similar (but not as complex) with a Walker-Hepburn and cannot resist making "improvements" Takes about as much time to make the drawings as to make the action.
Chuck