Glass-makers' tools are but few in number,
and extremely simple. The
, is somewhat like a pair of spring sugar-tongs,
the prongs resembling the cutting parts of shears, but blunt, and used
for rubbing the outside of solid or hollow glass, and pressing it into
a diminished diameter, at the same time elongating the parts by the
chair-rotating process. This tool does the same duty as the cutting tool
of a lathe; but instead of removing chips or waste, (as in the process of
reducing the diameter of the wood or metal,) it simultaneously squeezes
and lengthens. (See Wine-Glass Chair, at p. 83
This principal tool is
also employed to open or close the insides of wine-glasses, bowls, jugs,
vases; and to shape generally the Glass, as it rotates at the pleasure
of the workman.
The spring tool,
, is a species of tongs for laying hold of half-formed
handles, and generally to seize Glass while making.
The shears, C
but strong ordinary scissors, used for cutting off the surplusage of
glass handles, and to level the edges of bowls of wine-glasses, &c.
Much skill is required to shear wine-glass: it is held upon the iron by
the left hand, and rotated towards the shears, which are grasped in the