Boring apparatus with screw anchor

Claim 1

IN COMBINATION WITH A HOLE BORING MACHINE COMPRISING A BORING HEAD, A GUIDE MEMBER EXTENDING FROM THE BORING HEAD, AND A BORING BAR OPERABLE IN THE GUIDE MEMBER AND PROJECTING FROM THE HEAD DURING ITS BORING OPERATION, A SCREW ANCHOR ADAPTER COMPRISING A SLEEVE RIGIDLY CONNECTED TO THE BORING BAR IN AXIAL ALIGNMENT THEREWITH, AND MEANS ON THE SLEEVE RELEASABLY LOCKING A SCREW ANCHOR THERETO FOR ROTATING SAID SCREW ANCHOR UNTIL IT IS IN ANCHORED POSITION AND THEN ENABLING DISENGAGEMENT OF THE ANCHOR FROM THE ADAPTER, SAID MEANS ON THE ADAPTER FOR CONNECTION WITH THE SCREW ANCHOR INCLUDING A POLYGONAL SOCKET FOR RECEIVING A POLYGONAL PROJECTION ON THE ANCHOR, AND SPRING URGED FINGERS CARRIED BY THE SLEEVE ENGAGING THE ANCHOR FOR FRICTIONALLY RETAINING THE ANCHOR CONNECTED WITH THE ADAPTER, SAID BORING HEAD INCLUDING A BORING BAR CLEANING BRUSH ENGAGING THE PERIPHERY OF THE BORING BAR DURING THE ROTATION AND LONGITUDINAL MOVEMENT THEREOF, SAID BORING HEAD ALSO INCLUDING AN OILING AND WIPING DISK OF FELT MATERIAL ENGAGING THE PERIPHERY OF THE BORING BAR DURING ROTATION AND LONGITUDINAL MOVEMENT THEREOF, SAID OILING DISK BEING DISPOSED BETWEEN THE CLEANING BRUSH AND THE BORING HEAD FOR ENGAGING THE BORING BAR AFTER THE BORING BAR HAS BEEN CLEANED BY THE BRUSH DURING THE UPWARD MOVEMENT OF SAID BORING BAR.