Lynde, Carleton John, b. 1872, Gilbert, A. C. (Alfred Carlton), 1884-1961, A.C. Gilbert Company · New Haven, CT : A.C. Gilbert Co. · leaf 45
third of the joint in the blowpipe flame(Fig. 73), and when red hot blow a slight bulge. Now turnthe joint one third, heat thenext third red hot and blow aslight bulge. Repeat with theremaining third. Now heat the first thirdagain until it is red hot andshrinks, then blow a slightbulge again.…
Glass blowing and working
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