 | Pennsylvania. Department of Agriculture - 1899 - 930 páginas
...of the broad tire over this track have in all cases been suflicient, however, to so improve the road surface that both the broad and narrow-tired wagons...road with less draft than the narrow tires did in the orignal ruts. In addition to the saving of draft, the road was made very much more comfortable and... | |
 | Ohio State Board of Agriculture - 1898 - 884 páginas
...cases been sufficient, however, to so improve the road surface that both the broad and narrow tired wagons passed over this road with less draft than...vehicles and pleasure carriages by the few runs of the six inch tire. Summing up all the tests on dirt roads, it appears that there are but three conditions... | |
 | Ohio State Board of Agriculture - 1898 - 882 páginas
...cases been sufficient, however, to so improve the road surface that both the broad and narrow tired wagons passed over this road with less draft than...draft, the road was made very much more comfortable and p!eas,:iit for the users of light vehicles and pleasure carriages by the few runs of the six inch tire.... | |
 | Maryland Geological Survey - 1899 - 688 páginas
...broad tire over this track have in all cases been sufficient, however, to so improve the road-surface that both the broad- and narrow-tired wagons passed...in the original ruts. In addition to the saving of the draft, the road was made very much more comfortable and pleasant for the users of light vehicles... | |
 | Maryland Geological Survey, William Bullock Clark - 1899 - 562 páginas
...broad tire over this track have in all cases been sufficient, however, to so improve the road-surface that both the broad- and narrow-tired wagons passed...in the original ruts. In addition to the saving of the draft, the road was made very much more comfortable and pleasant for the users of light vehicles... | |
 | Maryland Geological Survey - 1899 - 634 páginas
...broad tire over this track have in all cases been sufficient, however, to so improve the road-surface that both the broad- and narrow-tired wagons passed...in the original ruts. In addition to the saving of the draft, the road was made very much more comfortable and pleasant for the users of light vehicles... | |
 | Maryland Geological Survey - 1899 - 636 páginas
...broad tire over this track have in all cases been sufficient, however, to so improve the road-surface that both the broad- and narrow-tired wagons passed...in the original ruts. In addition to the saving of the draft, the road was made very much more comfortable and pleasant for the users of light vehicles... | |
 | Maryland Geological Survey - 1899 - 638 páginas
...broad tire over this track have in all cases been sufficient, however, to so improve the road-surface that both the broad- and narrow-tired wagons passed...in the original ruts. In addition to the saving of the draft, the road was made very much more comfortable and pleasant for the users of light vehicles... | |
 | New York (State). State Engineer and Surveyor - 1900 - 600 páginas
...cases been sufficient, however, to so improve the road surface that both the broad and narrow tired wagons passed over this road with less draft than...addition to the saving of draft, the road was made ve»y much more comfortable and pleasant for the users of light vehicles and pleasure carriages by... | |
 | Pennsylvania. Department of Agriculture - 1902 - 1048 páginas
...cases been sufficient, however, to so improve the road surface that both the broad and narrow tired wagons passed over this road with less draft than...vehicles and pleasure carriages by the few runs of the six inch tire. Summing up all the tests on dirt roads, it appears that there are but three conditions... | |
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Where the ruts were eight inches deep, with rigid walls, three runs of the broad tire in its own track over the ruts were required to eliminate the disadvantage. Three runs of the broad tire over this track have in all cases been sufficient, however,... 