Up: Glassmaking
Flat Glass: 34 of 66
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years and even in our present day of progress it is still
used extensively in many countries of Europe, while in the
United States approximately one-third of our window glass
is produced by this method which, however, is fact becoming
obsolete on account of the recent developments in the art.
It is evident that while the hand
cylinder process is an advance in a commercial way over the
old crown process, the method is still very expensive and
obviously laborious and hard upon the workmen.
The artisans employed in the manufacture
of sheet glass by this process have for years jealously guarded
their trade, allowing only a limited number of apprentices.
They have rigorous rules and regulations in respect to the
teaching of these apprentices to follow in the footsteps of
the older men, who are forced to abandon their trade prematurely
because of its rigorous demands. Here again is seen ample reason
for study and experiment in order to
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