Maurer, Edward R. (Edward Rose), b. 1869 · New York : John Wiley & sons, inc.; [etc., etc.] · leaf 360
345 i6i-(44)- Fig- 83 represents in outline a certain small vertical-lift bridge. Thelifting span is counterweighted as shown. At the center of the span there is a cross-shaft having on each end a drum long enough to provide for two up-haul and twodown-haul cables. From each drum the cables are led… … Floor Spur C5eCT/-><ag™< ■ PinionBevel Gears-^^^f, ^Drum Drum- Cross %5hafr Section at Drums.Sheave Sheave ^;;;^?p^ ] heave <Tower Fig. 83 end of the span, beyond which they are led to attachments at the top and bottom ofthe tower, as shown. The cross-shaft is driven through a pair of…
Mechanics
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
