Turret type vertical milling machine

Claim 1

A TURRET TYPE VERTICAL MILLING MACHINE COMPRISING A BASE PORTION, A VERTICAL SUPPORTING PORTION EXTENDING UPWARDLY FROM THE BASE PORTION, A WORK SUPPORTING STRUCTURE ADJUSTABLE UPON THE BASE PORTION AND GUIDED BY THE VERTICAL SUPPORTING PORTION, A TURRET MOUNTED FOR FULL ROTATION UPON THE UPPER END OF SAID VERTICAL SUPPORTING PORTION, SAID TURRET HAVING A PORTION DEPENDING INTO THE VERTICAL SUPPORTING PORTION, A WORM RING GEAR ON SAID DEPENDING PORTION AND A HAND WHEEL CONTROLLED WORM PINION MOUNTED ON THE VERTICAL SUPPORTING PORTION AND MESHING WITH SAID WORM RING AND HAVING A HAND WHEEL TO EFFECT THE TURNING OF THE WORM, SAID TURRET HAVING A DOVETAIL GROOVE EXTENDING ACROSS THE TOP THEREOF, AN OVERARM SLIDE HAVING A DOVETAIL PROJECTION MATING WITH SAID DOVETAIL GROOVE, A THREADED SHAFT EXTENDING LONGITUDINALLY OF AND BELOW THE GROOVE AND JOURNALLED ON THE TURRET, SAID SHAFT HAVING A GEAR SECURED THEREON, SAID OVERARM SLIDE HAVING A DEPENDING NUT MEANS RECEIVING SAID SHAFT, A HAND WHEEL ADJUSTING GEAR MATING WITH THE GEAR SECURED ON SAID SHAFT AND HAVING A HAND WHEEL SECURED THERETO AND EXTENDING OUTWARDLY FROM THE TURRET AND EASILY ACCESSIBLE TO THE OPERATOR OF THE MACHINE, WHEREBY THE TURRET AND THE OVERARM SLIDE WILL BE HAND WHEEL CONTROLLED, AND A SPINDLE HEAD STRUCTURE CONNECTED TO ONE END OF THE OVERARM SLIDE.