| 摘要 |
1,232,354. Dozers. DEERE & CO. 7 May, 1969 [7 May, 1968], No. 23370/69. Heading E1F. Material passing over the top of a dozen blade 27 mounted on vertically swingable arms 36 secured to either side of a vehicle 10 is prevented from passing beneath the vehicle body 11 to jam between the arms and the body by guard structures 51 so extending from the top of the blade to either side of the body as to bridge the space between the blade and the front of the body. Each structure consists of an upright, inverted U-shaped frame having a vertical leg 55 that extends in vertical continuation of the blade and an upwardly and rearwardly inclined light portion 52 and a rear leg secured to the associated lift arm to lie to the rear of the front end of the vehicle. Each frame is aligned with the pistoncylinder motor 41 by which vertical movement of the associated arm is controlled. The inclination of the light portion facilitates self clearing of the structures of material riding thereover. |
