Poynting, J. H. (John Henry), 1852-1914, Shakespear, Gilbert Arden, ed, Barlow, Guy, joint ed · Cambridge, University Press · leaf 189
many other valuablesuggestions, and for the careful construction of all the apparatus except thebalance. These stuffing-boxes were perfectly air-tight when screwed up andthe rod could still be rotated without any leakage. But to draw it in or outit was necessary to loosen the screws slightly, and… … ■A A ^S- ^- rr, nder-rod.CO, side of ease. WW, two or three circular washers punched out of soft leather and soaked in oil.p, plunger driven in by screws, ss. oh, oil-hole through which valvohne, a thick lubricating oil, was inserted. The position of the balance-beam was read by a microscope…
Poynting, J. H. (John Henry), 1852-1914 · Physics
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
