Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 509
Coignet netting and hook, 22 1/3 feet. In the early days reinforced concrete was used forwater-pipes: more than a hundred miles of such pipes are now in … Cross-section of conduit, Newark, N. J. Expanded metal reinforcement. BRIDGES 443 service in Paris. Water-pipes on the Coignet system employ thinsteel rods hooked at both ends and curved into encircling hoops.Other rods laid lengthwise run through the hooks, so as to holdeach part of the framework…
Inventions · Inventors
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