be used. umns are joined together by cast iron joint blocks, with cir- When completed, the parts cular tenons which fit into the-hollows of each tube. are put together or assem- To join two bars to resist a strain of tension, links or eye bled, as the technical phrase bars are used, from three to… … joined together, and the result of numerous experiments Then they are marked with letters or numbers, accord- inch of the best bearing surface of the foot unused, Lut in- made at this establishment has shown that, under sufficient ing to the working plan, and shipped to the spot where the creased…
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