Chicago : Engineering and Contracting Pub. Co. · leaf 342
s into the roadbed for the purpose offorming water-stops. No. 116,734. Improvement in Wood Pavements; Edgar McMullen, Montreal, Que., inventor; patented July 4, 1ST1.The main feature of this invention comprisesthe connection of rectangular blocks by meansof flanged iron keys. No. 117,177.… … No. 117,212. Improvement in Wood Pavements:William E. Shaw, Portland, Me., inventor ;patented July 18, 1871.The pavement consists of lozenge-shapedblocks locked together by means of alternatewedge-shaped and recessed ends.No. 117,286. Improvement in Pavements; IsaacH. Hobbs, Philadelphia, Pa.,…
Buildings
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