[HELP] Edgewick Light Type Lathe help

[Sunset Machine]

Looks a lot like my 11" South Bend. On it, (can't tell from your pics - maybe..) there's a knob sticking out of the cover on the left end, it slides in and out to select between two ranges (no need to remove the cover). Above the gearbox tray is a lever that selects between three ranges. This lever can be shifted with the machine running, it's a handy way of changing feed rates on the fly.