Title: Method and apparatus for forming tempered glass articles

Abstract: This invention relates to a method and apparatus for forming tempered glass articles, the particularly shaped glass articles. The method includes the step of subjecting the glass article to be tempered to a homogeneous heating source while simultaneously quenching surfaces of said article being heated, whereby there is achieved within said article a differential temperature condition sufficient to effect full tempering thereof. Since the surfaces of said article are quenched as the article is being heated, at least the surface portions of the article are retained at a temperature sufficiently low to provide mechanical support for the article, whereby sagging or deformation of the article under gravitational or other influences is prevented, without the necessity for providing form-fitting molds or like appurtenances physically to prevent distortion of the glass article during tempering. The invention further relates to an apparatus for practicing the noted method.

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Inventors: French, Walter K. (Montrose, NY, US)

Application Number: 514422
Filing Date: 1974-10-15
Publication_date: 1976-02-17
Assignee: The Seagrave Corporation (New York, NY)
Primary Class(es): 65/114 65/40, 65/349, 65/351
Other Classes:
US Patent Ref:

2068799	Jan, 1937	Guyer	65/115.
3293022	Dec, 1966	Beattie	65/114.
3406022	Oct, 1968	Gehenot	65/104.

Other Refs: 393,491

Jun, 1933	UK

Primary Examiner: Kellogg, Arthur D.
Assistant Examiner:
Attorney: Basseches; Mark T., Basseches; Paula T.