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      Knowledge is Power

      Scientific American June 1928

      Roller Bearings Smooth the Traveler's Road

      Trains Equipped With Anti-friction Bearings Run With Minimum Jerk and Are Economical In Operation

      • By F. D. Mchugh on June 1, 1928

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      More in the June 1928 issue of Scientific American
      • Bumper Lights, Traffic Cop Stop Signal and More
      • Geophysical Prospecting
      • Our Point of View, June 1928
      View Full Contents
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