Stark Wheel & Pinion Cutter. 3 inches between centres and able to cut pinions and wheels up to four inches in diameter.
To see the Stark Damasking Machine and Automatic Staff Lathe - click here.

Stark Combined Universal Milling Machine and Wheel and Pinion Cutter.
This very expensive and beautiful machine - $425 in the late 1800s - was designed for "all kinds of light Milling, Wheel and Pinion Cutting". 
Very few details have survived - the vertical table travel was six inches, the in-and-out movement three inches and the weight 250 lbs.
Should any of these machines have survived, their present owners are invited to contact the author.