ing capacity. This derrick covers a cir- boom, 25 inches diameter at base and 21 inches at top ; cle 160 feet in diameter, and can raise or place 100 tons below their already extensive workings, from which mast socket, 30 !4 inches diameter by 26 inches deep; straight lift at any point within this… … The boom fall runs back from the cap- house stood. stan to a snatch block at the side of the Thus has the improvement society THE NEW CRANE, AVONDALE QUARRY. quarry, thence over the capstan house to made a drive about the beautiful old the top of the mast, through center of town a means of…
Inches · Breech · Rawhide · Illustrated · Bicycle · Munn · Scientific American · Derrick · India rubber · Horse power · Inches diameter · Main hoisting · Perspective elevations · Largest circulation · Musk deer · Ordnance board · Breech block
Internet Archive · Public domain (published before 1931). Free to use for anything.
