C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
49/58
C03B 23/02 (2006.01) C03B 23/025 (2006.01)
Patent
CA 1102135
BENDING GLASS SHEETS Abstract of the Disclosure Method and apparatus for bending glass sheets using a relatively lightweight, low cost bending mold of the outline type comprising a plurality of closely spaced shaping rails, each being rigid along its longitudinal dimension and its transverse vertical dimension and less rigid in its transverse horizontal dimension and mounted for micrometer adjustment in an essentially horizontal direction only to accommodate the mold to slight changes in mold outline. Only one set of molds constructed according to the present invention is needed to bend glass sheets of slightly different outlines to a desired shape for insertion in windshield receiving frames of automobiles of slightly different sizes. In the method of this invention, glass sheets are supported on such molds at a plane of support that is at a slight oblique angle downward in the downstream direction of glass sheet movement through a bending lehr in order to avoid slippage of glass sheets relative to the mold when the latter starts suddenly and to provide a more uniform heating pattern across the width of glass sheets conveyed transversely through a bending lehr provided with overhead heaters.
283228
Crowe Edward R.
Deangelis Willie G.
Gowling Lafleur Henderson Llp
Ppg Industries Inc.
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