Jig bore rotary table

Claim 1

A JIG BORER HAVING A BASE AND TRANSVERSELY AND LONGITUDINALLY MOVABLE SLIDES THE IMPROVEMENT COMPRISING AN UPSTANDING TUBULAR BOSS PROJECTING UPWARDLY FROM SAID LONGITUDINAL SLIDE AND HAVING RABBETS AT EACH END, SAID LONGITUDINAL SLIDE HAVING AN UPSTANDING PERIPHERAL WALL HAVING ITS INNER PERIPHERY SUBSTANTIALLY CONCENTRIC WITH SAID UPSTANDING BOSS AND PROJECTING UPWARDLY FROM SAID LONGITUDINAL SLIDE, A FLANGED BEARING SLEEVE MOUNTED IN THE BORE IN SAID BOSS WITH THE FLANGE RECEIVED IN THE UPPER RABBET WITH THE LOWER END OF SAID FLANGED SLEEVE PROJECTING BELOW THE LOWER RABBET WHILE BEING SPACED A SUBSTANTIAL DISTANCE ABOVE THE BOTTOM OF THE SLIDE, AN INTERMEDIATELY FLANGED PIVOT MEMBER ROTATABLY MOUNTED IN SAID FLANGED BEARING SLEEVE AND HAVING ITS FLANGE EXTENDING OUTWARDLY BEYOND THE PERIPHERY OF THE BOSS AND OVERLYING THE FLANGE OF SAID BEARING SLEEVE, A THRUST WASHER BETWEEN THE FLANGE OF SAID BEARING SLEEVE AND THE FLANGE OF SAID PIVOT MEMBER, A CIRCULAR TABLE HAVING A DOWNWARDLY EXTENDING HOLLOW CENTRAL HUB TELESCOPINGLY RECEIVING THE BOSS, SAID ROTATABLE TABLE HAVING AN INWARDLY EXTENDING CENTRAL PORTION OVERLYING AND SECURED TO THE FLANGE OF SAID PIVOT MEMBER, SAID ROTATABLE TABLE HAVING A DOWNWARDLY EXTENDING APRON SUBSTANTIALLY CONCENTRIC WITH THE HUB AND BOSS AND LYING WITHIN THE PERIPHERAL WALL OF SAID SLIDE, A THRUST WASHER MOUNTED ON THE LOWER END OF SAID BEARING SLEEVE AND IN THE RABBET AT THE LOWER END OF SAID BOSS AND SECURED TO THE PIVOT MEMBER BY A THRUST-RECEIVING CAP THEREBY MAINTAINING THE ROTARY TABLE AGAINST AXIAL DISPLACEMENT, AN ANNULAR RING WORM GEAR MOUNTED ON SAID APRON, A WORM DRIVING SAID WORM GEAR AND ROTATABLY MOUNTED IN BEARINGS IN SAID LONGITUDINAL SLIDE WHEREBY SAID TABLE MAY BE ROTATED MANUALLY OR BY A MOTOR OPERATING SAID WORM, COOPERATING RABBETS ON THE UPSTANDING PERIPHERAL WALL AND THE PERIPHERY OF THE CIRCULAR TABLE, BALL BEARINGS COOPERATING WITH SAID RABBETS FOR SUPPORTING THE OUTER PERIPHERY OF SAID CIRCULAR TABLE WHEREBY SAID CIRCULAR TABLE WILL BE COMPLETELY SUPPORTED AT ITS CENTER AND ITS PERIPHERY.