Industrial drawing and geometry; an introduction to various branches of technical drawing (1911)
Spooner, Henry John, 1856- · London, New York [etc.] Longmans, Green, and co. · leaf 159
. Gun-metal Tail-guide for Valve Rod.—Figs. 473, 474 showtwo views of a guide you may have noticed projecting from theend of the slide-valve jacket of a steam engine ; its function is tosteady and keep in its place the end of the valve rod, so that thevalve may not leave the face upon which it…
Mechanical drawing · Geometrical drawing
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