Up: Glassmaking
Stories of Industry
11 of 12
|
|
| |
the air, therefore the ingredients for making it must be thoroughly
tested before being used.
GLASS TUBES AND CANES.
In making glass canes, a mass of glass is
gathered and rolled. A flat plate of glass, adhering to a working-rod,
is fixed to the end of the mass opposite to where the blow-pipe is
attached.
The workman keeps his blow-pipe in his hands,
while his assistant holds the working-rod. They now separate, and
recede from each other; the greater the distance between them, the
greater the length of the
|
|
