| 摘要 |
<p>A dozer blade is positioned along the upper edge of an angularly positioned scraper snowplow blade and pivotally mounted adjacent the trailing edge thereof to receive accumulated compacted snow when the snow reaches a depth too great to be thrown away from the path of travel by the scraper blade. When the scraper blade is stopped by the accumulation of compacted snow, the outer free end of the dozer blade is pivoted outwardly removing a portion of the accumulated snow from in front of the scraper blade. The plow is then moved rearwardly with the dozer blade extended outwardly from the path of travel so that the snow at the sides of the scraper blade is pushed upwardly and outwardly beyond the trailing edge of the scraper blade to provide a wider path of clearance traveling in the rearward direction than in the forward direction so that during the next forward movement of the plow the scraper blade may move accumulated snow to the cleared side.</p> |
