Chicago : Engineering and Contracting Pub. Co. · leaf 272
a patent in 1870.The inventor was John Stafford Kelly of NewYork. The invention consisted of the combi-nation of a wooden block preferably 8 ins.long, 3 ins. wide and 6 ins. deep, of uniformhorizontal cross-sectional area, with an ironband, shaped on the inside to fit upon block,but tapering on the… … Fig. 5. band to readily work down with the wear ofthe wood, or to be driven, without unneces-sary resistance, by any suitable implement.Fig. 11 shows a plan and vertical sectionalview of the combination. Numerous patents have been taken out foriron paving blocks. One of the most inter-esting of…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
