"Traction wheel" Quotes from Famous Books
 ... unctuous metallic surface; and it has been amply demonstrated that the resistance of friction, of two bearing surfaces depends, not upon their extent, but upon the pressure with which they are forced together. A traction wheel, of given weight, resting upon two square inches of hard earth or rock, would develop the same tractile power as though it had a bearing surface of two square feet of ...
— Scientific American, Volume XXIV., No. 12, March 18, 1871 • Various |
