pfauter gear hobbing машин
Pfauter Gear Hobbing Machines. Based on his patent taken out in 1897 (No. 112082 in class 9a), by 1900 Hermann Pfauter had built the world's first gear hobbing machine - and established his first factory in the German machine-tool town of Chemnitz. Pfauter's machine was, of course, not the first able to produce gears of the correct form, …