This is some photos of the treadle and wheel on my Grover and Baker model 8. Copyright date of 1861. Hope it helps. Linda
Yes this is consistent with the other photos I have seen and virtually identical to my machine. Unfortunately, the flywheel goes from left to right and is centered on the back, rather than front front to back and mounted on the right side like so many other machines. I assume that women's clothes would get caught in the flywheel easier when it was mounted from side to side rather than mounted on the side and moving front to back. That is the challenge, to find the centered flywheel. Thanks for the close up of the pedal too, that is most helpful! Reba