Some Experiments on Pulling Loads with a Discussion of the Results1916 - Horses - 16 pages |
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20 horse-power 44 pounds 94 per cent acting advantage amount average pull block cent grade cog-wheel DIAGRAM SHOWING ACTION dirt drawn straight ahead drawn to scale Egbers engine extra force required extra pull feet per minute foot foot pounds force pulling front wheels hauled hind wheels less level pavement level track lever arm leverage arm lift load carried loaded with 4040 miles an hour miles per hour move loads move the load moves twice Narrow tire drawn narrow tire wagon obstacle pack animal plowed ground pound horse pound pull pounds to pull pull required pulling the load push required a force required to move required to pull road road-bed Section E-F seen side speed of 281 start a load steepest tends to turn tests tire drawn straight traction turn the wheel UNIVERSITY OF WISCONSIN walks Walla Walla weight wheel tracks Wide tire drawn wide tire wagon