nu- chrome steel, and at best it is only after many hours' usual construction the outside plate is an inch thick. facture of steel and iron vaults, the hardening of the work that the material can be perforated. Again, on Next to it comes a half inch plate, secured to the out- plates. The process is… … HARDENING COMPOSITE PLATES FOR BANK VAULTS BY IMMERSION IN THE HUDSON RIVER. countersunk in the half inch plates, while their ends the hot plates into salt water. Advantage is taken of even if the hard steel should be cracked, it is so em- the water front held by the firm in utilizing in situ screw…
Munn · Apparatus · Sodium · Ice cream · Scientific American · Rod carrying · Hot water · Indicated horse · Wrought iron · Horse power · Sodium peroxide · Cotton oil · Half inch
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