Multiple shaft type drilling machine

Claim 1

IN A MULTIPLE SHAFT TYPE DRILLING MACHINE COMPRISING A BASE ADAPTED TO BE SECURED ON A FLOOR, A VERTICAL PILLAR MEMBER UPWARDLY EXTENDING AT A LOCATION NEAR THE REAR SIDE OF SAID BASE; A HEAD ASSEMBLY MOUNTED AT THE UPPER END OF SAID PILLAR MEMBER AND A TABLE SUPPORTED BY SAID PILLAR MEMBER FOR VERTICAL MOVEMENT ALONG THE PILLAR; CHARACTERIZED BY THAT SAID DRILLING MACHINE INCLUDES A PLURALITY OF SPINDLE BOXES DISPOSED WITHIN SAID HEAD ASSEMBLY FOR RECEIVING THEIR RESPECTIVE SPINDLES; A COMMON DRIVE MOTOR DISPOSED ON SAID HEAD ASSEMBLY; SPINDLE DRIVE MEANS INTERCONNECTED BETWEEN SAID COMMON DRIVE MOTOR AND SAID SPINDLES FOR PROVIDING ROTATIONAL MOVEMENT OF SAID SPINDLES; A HORIZONTAL POSITIONING MEANS INCLUDING A THREADED BAR CONNECTED BETWEEN SAID SPINDLE BOXES FOR SELECTIVELY MOVING SAID SPINDLE BOXES RELATIVE TO EACH OTHER IN A HORIZONTAL DIRECTION; VERTICAL POSITIONING MEANS INDIVIDUALLY ENGAGING THE UPPER PORTION OF SAID SPINDLES WITHIN THEIR RESPECTIVE SPINDLE BOXES AND INCLUDING MEANS FOR SELECTIVELY MOVING SAID SPINDLES IN A VERTICAL DIRECTION; SAID VERTICAL POSITIONING MEANS INCLUDING MEANS FOR MOVING SAID SPINDLES IN UNISON WHEN IN A FIRST CONDITION AND SEPARATELY WHEN IN A SECOND CONDITION; SAID SPINDLE DRIVE MEANS INCLUDING REVERSING MEANS FOR SELECTIVELY REVERSING THE ROTATIONAL DIRECTION OF SAID SPINDLES; SAID SPINDLE DRIVE MEANS INCLUDING INTERMEDIATE SHAFTS CORRESPONDING IN NUMBER TO SAID PLURALITY OF SPINDLES, EACH OF SAID INTERMEDIATE SHAFTS BEING CONNECTED BETWEEN SAID COMMON MOTOR AND A CONNECTOR MEMBER DISPOSED IN ITS ASSOCIATED SPINDLE BOX.