Reversible contact wheel for centerless grinders

Claim 1

A CONTACT WHEEL STRUCTURE FOR CENTERLESS GRINDERS WHEREIN THE CONTACT WHEEL IS REVERSIBLE COMPRISING A DRIVEN SHAFT JOURNALLED IN BEARINGS MOUNTED IN THE GRINDING MACHINE FRAME, THE SHAFT HAVING A PORTION EXTENDING OUTWARDLY FROM THE BEARINGS, SAID SHAFT BEING FORMED WITH AN INNER CONICAL SURFACE AND A CYLINDRICAL SURFACE EXTENDING OUTWARDLY FROM SAID CONICAL SURFACE, A CONTACT WHEEL MOUNTED ON THE EXTENDING PORTION OF SAID SHAFT, SAID WHEEL HAVING A HUB FORMED INTERMEDIATE ITS ENDS WITH A CYLINDRICAL BORE, THE ENDS OF SAID HUB BEING FORMED WITH LIKE BORES TAPERED OUTWARDLY FROM SAID CYLINDRICAL BORE, SAID TAPERING BORES BEING FORMED COMPLEMENTAL TO THE TAPER OF THE CONICAL SURFACE ON SAID SHAFT, THE END FACINGS OF SAID HUB BEING FORMED WITH LIKE COUNTERBORES ENCIRCLING THE OUTER ENDS OF SAID TAPERED BORES AND BEING CONCENTRIC THEREWITH, AN ANNULAR MEMBER ADAPTED TO BE POSITIONED IN EITHER OF SAID COUNTERBORES, SAID ANNULAR MEMBER HAVING AN OUTER DIAMETER TO SNUGLY FIT THE COUNTERBORE, AND AN INNER DIAMETER TO SNUGLY ENGAGE THE CYLINDRICAL PORTION OF SAID SHAFT, SAID CONTACT WHEEL BEING POSITIONED ON THE EXTENDING PORTION OF SAID SHAFT WITH THE TAPERED BORE IN THE HUB OF THE WHEEL ENGAGING THE CONICAL SURFACE ON SAID SHAFT, AND WITH SAID ANNULAR MEMBER POSITIONED IN THE COUNTERBORE AT THE OPPOSITE OUTER END OF THE HUB, AND MEANS FOR CLAMPING SAID ANNULAR MEMBER AGAINST SAID HUB AND CLAMPING SAID HUB AGAINST THE CONICAL SURFACE ON SAID SHAFT.