National Geographic : 1918 Mar
SIRE-WOUND big guns, built of spiral or coil-wrapped cable, withstand greater firing stress, and last longer than ordinary guns. Says Popular Science: "The big.gun bound with wire is really stronger than one built of rings, or bands ofSteel. * * In making a wire-wound gun, the wire is wound .roundand round * * over a hundred miles." With cable-cord (a sturdy, resilient fusion, of cord and rubber) supplant ing wire, Goodrich Silvertown Cord Tires are' built like wire-wound big guns. Built thus to resist road shock, they outlast ordinary tires. Practical usage confirms science. SILVERTOWN CORDS and BLACK SAFETY TREADS, put to nation-wide road tests by Goodrich Test Car Fleets, have proved the durability and dependabilty of- "Mention the Geographic-It identifies you."