National Geographic : 1941 Apr
... but a little Nail could stop it! EVER APPRECIATE how perfect America's Engineers have made your car ... so dependable that you just get in and go without giving it a thought? Well, think! All that power could be stopped by "one little nail"... all that luxury, spoiled by a blow-out. That was the challenge to Goodrich, co workers with those engineers ever since B. F. Goodrich put tires on the first automobile offered for sale to the American public. B. F. GOODRICH MET THAT CHALLENGE with Seal-o-matic, the inner tube that "heals itself." You'd be amazed at the stories Seal-o -matic users tell. *A 4-inch glass spike imbedded through tire and tube, and not even discovered until tires were changed at 41,000 miles. * A tree stump tearing away a foot of tire, and the bare tube holding up for miles to a service station. With ordinary tubes, such experiences might have meant merely the nuisance of a "flat"-or, worse, the horror of a blow-out. But with B. F. Goodrich Seal-o -matic Inner Tubes, these cars kept right on going! AND THE MONEY YOU SAVE! * One owner claims 50% more tire mile age-says the same set of Seal-o-matics on 3 successive cars saved the cost of at least 6 tires. * A delivery fleet reports costly road delay eliminated, and tire mileage increased by more uniform pressure. So . . . start saving! Goodrich Silvertown Stores and many Goodrich Dealers of fer a confidential credit plan-and special bargain "change-over" deals for new cars. See the nearest one. * Names and addresses fur. nished on request. Many more amazing experiences Ct \ quoted in the latest Seal-o \ 00snatic booklet - ask for it! IT SEALSWITH NAIL IN Seal-o -matic lining of secret formula rubber works almost as if it were alive. As nail goes in, this lining closes in to form a tight seal around it. With tire and tube pierced like this, cars have kept go ing hundreds of miles! IT HEALSWITH NAIL OUT As object iswithdrawn, "Self Healing" lining works into hole-"heals" almost like the human body, only so fast the air hasn't time to escape. In World's Fair tests, one tube ripped by 3-inch spikes 189 times-still stood upl HEALS EVEN BIG RIPS THAT COULD MEAN BLOW-OUT! Photo shows big knife-gash (A) "Self-Healed"! Note high polish of tube . . .black rub ber, toughened-6%o stronger than ordinary tubes . . . for extra blow-out protection! and made extra heat-resistant with Duramin-just like Good rich Silvertown Tires. It's built round, like a tire. too never sold flat to be blown up and weakened by stretching. "Mention the Geographic-It identifies you."