Method of press shaping glass sheets

Claim 1

In a method of press bending heat-softened glass sheets under pressure against a mold member, the improvements which comprises interposing a fiber glass cover impregnated with about 10 to 50 cubic centimeters per square foot of a material selected from the group consisting of the Werner type complex organometallic compounds of a polyvalent metal selected from the group consisting of chromium, copper, cobalt, lead and nickel, in which the polyvalent metal is coordinated with an acyclic carboxylic acido group containing one to 20 carbon atoms and solutions of said Werner type complex organometallic compounds in organic solvents between said mold member and a sheet of heat-softened glass while the glass is at a temperature sufficiently high for deformation during said press-bending method, whereby said impregnated fiber glass cover is characterized by increased resistance to wear upon repeated, sequential exposure thereof to temperatures of the order in press bending heat-softened glass and ambient cool temperatures between press bending steps in said press-bending method.