Sheet forming apparatus

• US 3,338,696 A
• Filed: 05/06/1964
• Issued: 08/29/1967
• Est. Priority Date: 05/06/1964
• Status: Expired due to Term

• Current Assignee: Stuart M. Dockerty
• Original Assignee: Stuart M. Dockerty
• Inventors: Dockerty, Stuart M.
• Application Number:
  US04/365,321
• Time in Patent Office: 1,210 Days
• US Class Current: 65/145
• CPC Class Codes: C03B 17/064 by the overflow downdraw fusion process; Isopipes therefor

Claims

1. APPARATUS FOR FORMING SHEET GLASS WHICH COMPRISES, A BODY MEMBER HAVING EXTERIOR SIDEWALLS WITH DOWNWARDLY CONVERGING PORTIONS, AN UPWARDLY OPEN TROUGH FORMED IN AN UPPER SURFACE OF SAID BODY MEMBER HAVING BOUNDING WALLS PROVIDED WITH LINEAR TOP SURFACES, SAID EXTERIOR SIDEWALLS TERMINATING AT THEIR UPPER EXTENT IN SAID TOP SURFACES, INLET MEANS FOR SUPPLYING MOLTEN GLASS SOLELY TO ONE END OF SAID UPWARDLY OPEN TROUGH BELOW THE SURFACE OF MOLTEN GLASS RETAINED THEREIN, MEANS FORMING A PART OF SAID TROUGH FOR PROVIDING A UNIFORM HEIGHT OF MOLTEN GLASS OVERFLOWING SIAD TOP SURFACES ALONG THEIR EXTENT, AND SAID UNIFORM HEIGHT MEANS COMPRISING AN INCLINED BOTTOM SURFACE PROGRESSIVELY DECREASING THE HEIGHT OF SUCH TROUGH AS IT EXTENDS OUTWARDLY FROM SAID INLE T MEANS TO FACILITATE THE PRODUCTION OF SHEET GLASS HAVING IMPROVED THICKNESS UNIFORMITY ACROSS ITS WIDTH.