Edging glass sheets with diamond wheels

• US 4,621,464 A
• Filed: 04/30/1984
• Issued: 11/11/1986
• Est. Priority Date: 04/30/1984
• Status: Expired due to Fees

• Current Assignee: PPG Industries Incorporated (Nouryon BV)
• Original Assignee: PPG Industries Incorporated (Nouryon BV)
• Inventors: Kelly, Joseph B.
• Primary Examiner(s): Schmidt, Frederick R.
• Assistant Examiner(s): Zatarga, Joseph T.
• Application Number:
  US06/605,507
• Time in Patent Office: 925 Days
• Field of Search: 51/283 E, 51/206 R
• US Class Current: 451/544
• CPC Class Codes: B24B 9/10 of plate glass

Abstract

Edge grinding cut glass sheets by engaging the moving edge of a cut glass sheet with a rotating edge grinding wheel having blocky diamonds in a concentration not exceeding 20 embedded in a matrix.

Claims

1. An edge grinding wheel for shaping an edge of a glass sheet, comprising:

a plurality of blocky diamonds having XYZ coordinates in an approximate ratio of 1 to 1 to 1; and

an adhesive to secure said blocky diamonds at the surface of said ginding wheel to provide a grinding surface with a blocky diamond concentration not to exceed approximately 15 carats per cubic inch.

2. The grinding wheel as in claim 1, wherein said edge grinding wheel includes a periphery of concavely curved contour to impart a conversely curved contour to the edge surface of said glass sheets during said edge grinding.

3. The grinding wheel as in claim 1, wherein said edge grinding wheel includes a periphery that has a beveled portion merging into a concavely curved portion to impart a contour comprising a beveled portion forming an obtuse angle with one major surface of said glass sheets merging into a convexly shaped portion merging into its other major surface.