Firestone Patented Gum-Dipping Process

Front:
THE FIRESTONE PATENTED GUM DIPPING PROCESS IN THE FIRESTONE FACTORY AND EXHIBITION BUILDING. A CENTURY OF PROGRESS.

Back:
Firestone Patented Gum-Dipping Process By this process, eight extra pounds of rubber are added to every one hundred pounds of high-stretch cord, coating every fiber in every cord. This is an extra process for Safety, Strength and Durability-not used in any other tire. Gum-Dipped High-Stretch Cords withstand road shocks 58% longer-and the Two Extra Gum-Dipped Cord Plies under the Tread give 56% greater bond between Tread and Cord Body. & SONS CO., CHICAGO DEEPTONE R. R. DONNELLEY Copyright 1933 The Firestone Tire & Rubber Co.