This is a Chipmore chipper, classic chuck and duck! No controlling the feed. Your A, with the fly wheel, is the model prior to the 60, this only a '51, would run this chipper the same. They just don't manufacture a chipper without auto feed anymore. I fed this when I was 14 years old, I am now 39, my mother had a boy that survived. ;-)

Thank you! One of the clips inside the clutch housing is broken. Good eye, sir!

No it's not! That is just where the paint on the pully has been worn off by the brake!