Marson, Percival · London, New York [etc.] Sir I. Pitman & Sons · leaf 97
suit his work before beginning to blow it out into ahollow bulb. The pontil is a solid rod of iron of similar length andthickness to the blow-iron. By gathering a little wadof hot glass on the pontil and sticking it against the endof the bulb attached to the blow-iron, the workman candetach the… … GLASS WORKER S CHAIR After re-heating the glass, he may shear it with hisscissors or shears, open it out with his pucellas, crimpleit with his tongs, measure and caliper it, or shape itto a template. Wliilst he is doing such operations he sits in aglass workers chair. This chair has two…
Glass manufacture
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