Surfacing of materials

Claim 1

A PROCESS FOR THE SURFACING OF THE PRINCIPAL SURFACES OF A FLAT SHEET OF GLASS AND THE LIKE, THE PRINCIPAL SURFACES BEING OF A PREDETERMINED BREADTH, BY MEANS OF A ROTARY GRINDING WHEEL HAVING A SUBSTANTIALLY CONTINUOUS ANNULAR GRINDING FACE WITH ABRASIVE PARTICLES OF A GRIT SIZE NOT GREATER THAN 200-230 GRIT SIZE BONDED THEREIN, THE GRINDING FACE HAVING A RADIAL DIMENSION OF SUBSTANTIAL EXTENT RELATIVE TO THE OUTER DIAMETER THEREOF, THE INNER DIAMETER OF THE ANNULAR GRINDING FACE BEING MATERIALLY LESS THAN THE BREADTH OF THE SHEETS BEING SURFACES, COMPRISING THE STEPS OF POSITIONING THE ANNULAR GRINDING FACE OF THE GRINDING WHEEL ADJACENT A PRINCIPAL SURFACE OF THE SHEET OF GLASS BEING SURFACED IN SUCH RELATION THERETO AS TO HAVE AT LEAST ALL OF AN INNER RADIAL PORTION OF THE ANNULAR GRINDING FACE AT ALL TIMES IN OVERLYING RELATION TO AND IN CONTACT THEREWITH, FEEDING THE SHEET OF GLASS PAST THE GRINDING WHEEL TO EFFECT SURFACING THE PRINCIPAL SURFACE THEREOF, ROTATING THE GRINDING WHEEL AT A PREDETERMINED RATE, CONTROLLING THE DOWN-FEED OF THE ANNULAR GRINDING FACE UPON THE PRINCIPAL SURFACE OF THE SHEET, AND SUPPLYING A COOLANT FOR INTROMISSIVE FLOW IN A PREDETERMINED DISTRIBUTION INTERMEDIATE THE ANNULAR GRINDING FACE AND THE PRINCIPAL SURFACE OF THE SHEET.