 | Pennsylvania. Department of Agriculture - 1899 - 930 páginas
...every trial the first run of the broad tire over the narrow tire ruts has shown a materially increased draft when compared with that of the narrow tire run...showed a lighter draft for the broad tire than the uarrow tire showed in the first run. Where the ruts were eight inches deep with rigid wall, three runs... | |
 | Ohio State Board of Agriculture - 1898 - 882 páginas
...every trial, the first run of the broad tire over the narrow tire ruts has shown a materially increased draft when compared with that of the narrow tire run...rut. The second run of the broad tires in the same trai-k, where the rut is not deep, completely eliminated this disadvantage and showed a lighter draft... | |
 | Pennsylvania. Department of Agriculture - 1899 - 926 páginas
...every trial the first run of the broad tire over the narrow tire ruts has shown a materially increased draft wHen compared with that of the narrow tire run...run. Where the ruts were eight inches deep with rigid wall, three runs of the broad tire in its own track over the ruts were required to eliminate the disadvantage.... | |
 | Maryland Geological Survey - 1899 - 688 páginas
...every trial the first run of the broad tire over the narrow-tire ruts has shown n materially increased draft when compared with that of the narrow tire run...track where the rut is not deep completely eliminated the disadvantage, and showed a lighter draft for the broad tire than the narrow tire showed in the... | |
 | Maryland Geological Survey - 1899 - 634 páginas
...every trial the first run of the broad tire over the narrow-tire ruts has shown a materially increased draft when compared with that of the narrow tire run...track where the rut is not deep completely eliminated the disadvantage, and showed a lighter draft for the broad tire than the narrow tire showed in the... | |
 | Maryland Geological Survey - 1899 - 636 páginas
...every trial the first run of the broad tire over the narrow-tire ruts has shown a materially increased draft when compared with that of the narrow tire run...track where the rut is not deep completely eliminated the disadvantage, and showed a lighter draft for the broad tire than the narrow tire showed in the... | |
 | Maryland Geological Survey - 1899 - 638 páginas
...narrow-tire ruts has shown a materially increased draft when compared with that of the narrow tire rnn in its own rut. The second run of the broad tires...track where the rut is not deep completely eliminated the disadvantage, and showed a lighter draft for the broad tire than the narrow tire showed in the... | |
 | New York (State). State Engineer and Surveyor - 1900 - 600 páginas
...every trial, the first run of the broad tire over the narrow tire ruts has shown a materially increased draft when • compared with that of the narrow tire...tire showed in the first run. Where the ruts were 8 inches deep, with rigid walls, three runs of the broad tire in its own track over the ruts were required... | |
 | Pennsylvania. Department of Agriculture - 1902 - 1048 páginas
...every trial the first run of the broad tire over the narrow tire ruts has shown a materially increased draft when compared with that of the narrow tire run...and showed a lighter draft for the broad tire than tlie narrow tire showed in the first run. Where the ruts were eight inches deep with rigid walls, three... | |
 | Maryland Geological Survey - 1899 - 558 páginas
...every trial the first run of the broad tire over the narrow-tire ruts has shown a materially increased draft when compared with that of the narrow tire run...track where the rut is not deep completely eliminated the disadvantage, and showed a lighter draft for the broad tire than the narrow tire showed in the... | |
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... ceases entirely, and the narrow tires pull materially lighter, (e) Clay road, surface dry, with deep ruts cut by the narrow tires in the ordinary use of the road. In every trial, the first run of the broad tire over the... 
