ry great rigidity, in which sides of which are curved in the arc of a circle, it be- Fig. 5 comprises eight 1 inch tubes and eight J^ inch the metal tubes supply the tensile strength which the ing intended, by the swinging of this plate, to direct concrete lacks. It is well known that concrete will… … the advantages of cast iron on the the tubes may readily be filled with moss litter, chaff, CLARK'S GAS GENERATOR AND BURNER. sawdust, or other non-conducting material, and thus outer surface with a steel and con- there will be produced, at small cost, a building that crete core. The latter shows a…
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