Society of Glass Technology · [Sheffield] · leaf 507
each their uppermost position, theyare carried on to anti-friction rollers, 18, and are caused to rotateby the action of one or more bevelled rubber rollers, 22, so shapedas to hold the glass vial against the stop, 19. In this position,flames play on the open end of the vial, and when sufficiently… … Fig. 48. disc, 63. A second cam disc controls the motion of the crankedlever, 72, which operates a sliding shaft, 71. Mounted transverselyon this shaft is a thread-forming roller, 78, and a correspondingplain roller, 83. These two rollers are brought together by theaction of a third cam disc and a…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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