A typical Goyen invention - a fast-acting quick-reverse mechanism connect to a spiral apparatus chuck. This was a means of rotating the headstock spindle by using the slide-rest feed screw and was more

Is this original? It looks to be a later bolt-on addition and uses a power shaft mounted to the rear of the bed. This not uncommon practice of the 1800s allowed (together with a second set of changewheels across the tailstock end of the bed) power cross feed to be fitted together with an extreme ratio reduction between spindle and front leadscrew for the development of very fine screw pitches or rates of carriage feed.