Society of Glass Technology · [Sheffield] · leaf 565
ntric shaft, 73, and throw the gears,69, 70, out of mesh. A disc (Fig. 128) on the shaft, 65, drivesat a varying speed a disc 84, on a parallel shaft, 82; a link,85, connects the discs 83, 84. Lens-clamping members, 77, 78,provided with pads, rotate with spindles, 79, 80, which are drivenby 2 : 1… … Fig. 128.The pins, 100, act readily on the shaft, 97, and so lock the latterin any position. The end of the arm, 93, engages a grooved collar,91, slidable on the shaft, 80, and transmits, through this collar, 91,thrust ball bearings, 86, and springs, 92, a longitudinal movementto the shaft, 80,…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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