[QUOTE=WmRMeyers;145717].... Doesn't look like it has threading gears, or much provision for them,...

Yes it has threading capability, first of all it has a lead screw, and all those open gears at the back of the head, are where you change gears manually to get different threads.
My first lathe was an old 7"x40" flat bed and didn't look too dissimilar to this lathe, you had to physically change the gears at the back to change the thread pitch.
A fair bit of calculation went into that. I did eventually buy a book on centre lathe turning which contained all the formulas for for that, but my workshop was burgled and one of the things "they" stole was that book