Here are some shots of Atlas 10" F-series lathe dated about 1937. The photos show some of the modifications I have made to date.
Dial Clutch Components
1 Jamb nut with washer
1 Leather washer (CLUTCH) This has now been replaced by 2 Belleville washers.
2 Teflon washers to give smooth action when rotating the dial into postion.
Photo by BTM Enterprise