Curved structure and method for making same

Stoves and furnaces – Stoves – Cooking

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126418, 350628, G02B 510, F24J 246

Patent

active

046782923

ABSTRACT:
A plurality of thin flexible sheet ribs are secured to thin flexible sheet stringer members to form a distortable frame structure. One edge of the ribs lie in a curved surface such as a parabolic cylindrical surface. A thin sheet of boron-silicate glass, preferably formed with a second surface mirror, is annealed and then bent at room temperature to abut the edges of the ribs lying in the curved surface and is retained in place by ribs at opposite edges of the sheet. The inherent strength of the glass under stress, when bent, provides structural rigidity to the combined elements.

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Timoshenko, Strength of Materials, Part I, "Elementary Theory Problems", D. Vanostrand Company Inc., New York, (1930), pp. 92 & 93.

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