Chicago : Engineering and Contracting Pub. Co. · leaf 473
■S/OE t LEi AT/O/V Dri// a// ho/es for / BothforJarftrna T/moer /?*/?, JacA^rjo 7/rr?£>frs. J » Side P/ates i. ^a-o-ee-o/ona j» =.i ir-t //o/esybr^fBo/Zj i i 6*6Jl -es-o /ong /4 ~rt «/f Fig. 4—Steel Shoe Used for Hoisting Shafts. The ends of the shaft conform to a radius of5 ft. 8 ins. After… … 271.5 ft. The circumference of the inside ofthe concrete lining is 47 ft., with a clear open-ing of 165 sq. ft. The two main airways are V
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
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