Chicago : Engineering and Contracting Pub. Co. · leaf 340
Fig. 10—Round Block Pavement UnderBetteley Patent. … . high by 3 in. wide, between which are placedirting strips, iron bolts passing through bothle blocks and strips. 0. 93.S37. Improved Wood Pavement; WilliamO. Robbins, New York, N. Y., inventor; pat-ented Aug. 17, 1869. The invention provides for the use of a dove- .iled flanged base for receiving…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
