Chicago : Engineering and Contracting Pub. Co. · leaf 338
vement whichwas laid to some extent was the Staffordpavement. A patent (No. 80,2(51) for this September 27, 1911. ENGINEERING & CONTRACTING 323 )avement was granted in 1867 to Charles W.Stafford of Saybrook, Conn. In Fig. 8 isihown a perspective view of sections of this>avement. The sections… … rig. 4—Block Arrangement Under AbbottPatent. lowels, or both. Longitudinal dovetailedtrips were driven in the base of the section,irojecting below the lower surface so far aso afford a firm bearing in the earth and ren-ter the sectional block solid and immovable.Jrooves were then cut in the surface…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
