Boring bar assembly for deep hole boring

Claim 1

A DEEP HOLE BORING BAR ASSEMBLY COMPRISING, IN COMBINATION, A BORING BAR HAVING A CUTTER ADJACENT ONE END THEREOF AND COUPLING MEANS ADJACENT THE OPPOSITE END THEREOF, A RELATIVELY THIN SHELLED FOLLOWER BEARING SUPPORT JOURNALED ON SAID BAR INTERMEDIATE THE ENDS THEREOF, SAID FOLLOWER BEARING SUPPORT HAVING A PLURALITY OF LONGITUDINAL GROOVES THE BOTTOM SURFACE OF WHICH IS TAPERED RELATIVE TO THE AXIS OF SAID BAR, A PLURALITY OF REMOVABLE ELONGATED WEAR SHOES MOUNTED IN SAID GROOVES OF THE FOLLOWER BEARING SUPPORT, EACH SAID WEAR SHOE HAVING A TAPERED SIDE COMPLEMENTARY TO SAID BOTTOM SURFACE OF THE FOLLOWER BEARING SUPPORT AND A STRAIGHT SIDE SUBSTANTIALLY PARALLEL TO THE AXIS OF SAID BAR, SAID WEAR SHOES HAVING A STRIP OF PLASTIC BEARING MATERIAL ATTACHED TO SAID STRAIGHT SIDE, SAID WEAR SHOES BEING AXIALLY MOVABLE WITH RESPECT TO SAID FOLLOWER BEARING SUPPORT IN RESPONSE TO AXIALLY DISPLACEMENT OF SAID BAR, AN ADJUSTABLE STOP ON SAID BORING BAR ADJACENT SAID COUPLING MEANS, AND MEANS ADJACENT SAID FOLLOWER BEARING SUPPORT FOR TRANSMITTING AN AXIAL THRUST BETWEEN SAID ADJUSTABLE STOP AND SAID WEAR SHOES.