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Gisholt 52″ vertical boring mill. The machine has a turret head on the left hand side and “an attachment for crowning pulleys or fly wheels, capable of finishing various convexities without the use of cams, for any size pulley with diameter not exceeding 12′. The fly wheel shown is 43 1/2″ in diameter and 8 1/4″ face. It is finished on the Gisholt Mill in 91 minutes . . . . In finishing hoisting engine drums on this mill the time required is 90 minutes . . . . The operator is not a skilled operator.” Gisholt was the first company to specialize in heavy type turret lathes adapted to finishing of medium and heavy castings and forgings


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