 T IS therefore quite
obvious that the logical method of making sheet glass is to make it
in flat form at the outset. One naturally asks: "Why make it round
and then change its form to a flat sheet?" Books could be written
on the study and experimentation of drawing glass in sheet form.
There is on file a British patent taken out by a man named Clark,
February 19, 1857, and a very similar Belgian patent taken out by a
man named Loup, March 12, 1857. These were followed by an extraordinarily
large number of patents on sheet glass from that time to the present
and it can be well said that there is hardly another industry today in
which such a wealth of study, effort and money has been
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