Society of Glass Technology · [Sheffield] · leaf 724
le, 73. Each chuck-holder, 14, has an eccentricopening, 15, in which fits a chuck, 7, having an eccentric ring, 10,lined with felt, etc., to receive the work, 11. By turning thechuck in its holder, the position of the work relatively to the grinderis varied. The cracking-off apparatus comprises a… … Fig. 21G. 106, is adjustable with respect to the V-support, 105. Each work-holder is formed of a plate, 84, having radial slots, 85, and aboss, 92, on which is screwed a plate, 87, having spiral slots. Pins,89, engage both sets of slots, and are varied in position by rotatingthe plate, 87,…
Glass
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