What??? Parts might not be available??? Waaaaaaah
This is a Machinists Forum...
A Horizontal Mill can cut most feed quality gearing. Including its own gearing.
Parts are hardly available for ANY OLD IRON (Quality Big Stuff ...not Atlas, SB, Logan, etc......) So it all has to be found or made.
Most of the parts were made by simple Production Lathes, Grinders, and Horizontal Mills... Some stuff was Hobbed or Shaped, but even that is not a deal breaker.
If you can cut a gear and a spline, you can rough out parts for a final grind at a real gear shop. No complicated steel or heat treat processes here, just basic machine tool stuff...
Oh no its rusty...... 2~3 hours of busywork with Scotchbrite, steel wool, oil makes a a world of difference in apperance.
If everything moves, and you want it... get it.... If it is beyond fixing, part it out/Scrap it, no terrible loss.
It is not a High dollar item nowadays, but maybe in 100 years or so..
My pre 1890 or so Cincinnati still has rust on it!!! Oh well just have to throw it away and buy a brand new American made Universal Horizontal Mill.
Oh wait, they don't make them here any more, and most likely never will...
I think Torker has an OHIO mill he fixed up (related to Greaves)