. . . there was Pyrex Flameware.
So, wha' happened to it? Most likely, the rise in popularity of electric ranges with coil surface units was the beginning of the end. Flameware could handle the direct heat of an open flame but was no match for the intense contact heat of an electric coil, so Corning offered wire spacers to owners of electric ranges. Also, borosilicate Pyrex has the same tensile strength as tempered glass. A good hard knock while washing the pot could introduce a hairline crack that would make it prone to failure even on a gas burner.
The world would have to wait until the late 1950s for stovetop CorningWare with Pyrex lids that let you monitor the cooking progress from above, but it wouldn't be until the 1980s that VISIONS would bring back see-through stovetop cookware.

So, wha' happened to it? Most likely, the rise in popularity of electric ranges with coil surface units was the beginning of the end. Flameware could handle the direct heat of an open flame but was no match for the intense contact heat of an electric coil, so Corning offered wire spacers to owners of electric ranges. Also, borosilicate Pyrex has the same tensile strength as tempered glass. A good hard knock while washing the pot could introduce a hairline crack that would make it prone to failure even on a gas burner.
The world would have to wait until the late 1950s for stovetop CorningWare with Pyrex lids that let you monitor the cooking progress from above, but it wouldn't be until the 1980s that VISIONS would bring back see-through stovetop cookware.
