Kirkman, Marshall Monroe, 1842-1921 · New York, Chicago, The World Railway Publishing Company · leaf 232
228 BUILDING AND REPAIRING RAILWAYS. … sectwhAB SECTION VD Fig. 121. RIGID CHUCK FILLED PROG. frog and suitable for yards or a road with light traffic. Fig. 122 represents a clamped frog, the vctiq* »«Kf » umr am* Fig. 122. RIGID STEEL CLAMP FROG. clamps being made of steel. This is sometimes called a yoked frog. Fig. 123 represents a…
Railroads · Transportation
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
