Society of Glass Technology · [Sheffield] · leaf 486
aft, 19, by gear engaging a wheel, 17. The edge of the corundum wheel, 18, touches the rod, etc., 6, each revolution of the wheel, 17, and scores the rod as it moves upwards at the same speed as the rod. A cam-operated arm presses the rod, 6, into contact with the wheel, 18, and another arm strikes… … Fig. 62.
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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