Society of Glass Technology · [Sheffield] · leaf 470
for Making Glass Marbles, etc. G. J. Thompson,Clarksburg, West Virginia, Assignor to Glamar Machine Co.,West Virginia (U.S.A. Pat., No. 1374966, April 19th, 1921. FiledAugust 25th, 1919, No. 319551).—The invention relates to machinesfor making spherical articles such as balls, marbles, or casters… … Fig. 41. desired shape. The machine consists essentially of a turntable(Fig. 41) with a plurality of shaping channels, 7, substantiallyhalf round in section, starting near the centre and ending near thecircumference of the table. Above the table are mounted shapingrolls, 8, having spiral shaping…
Glass
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