Land smoother |
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| 申请号 | US3684031D | 申请日 | 1970-08-04 | 公开(公告)号 | US3684031A | 公开(公告)日 | 1972-08-15 |
| 申请人 | REYNOLDS RESEARCH & MFG CORP; | 发明人 | REYNOLDS ELDON J; | ||||
| 摘要 | A land smoother having an angled blade with a horizontal capping surface which extends forwardly from the upper edge of a vertical cutting surface. The height of the cutting surface decreases gradually from a maximum at the forward end of the blade to substantially a vanishing point at its rearward end. | ||||||
| 权利要求 | 1. A land smoother, comprising a frame adapted to be moved in a forwardly direction over the ground surface, and a blade on the frame extending at an acute angle to the direction of movement of the frame, said blade having a vertical cutting surface with a lower cutting edge and a horizontal capping surface which extends forwardly of the cutting surface above the cutting edge, the height of said cutting surface decreasing gradually in a direction from the forward end to the rearward end of the blade to substantially a vanishing point at its rearward end. 2. A land smoother of the character defined in claim 1, including at least one other blade on the frame forwardly of the first-mentioned blade and extending at an acute angle to the direction of movement of the frame for delivering soil to an area in front of the forward end of the cutting surface of said first-mentioned blade. 3. A land smoother of the character defined in claim 2, wherein said second-mentioned blade also has a vertical cutting surface with a lower cutting edge and a horizontal capping surface which extends forwardly of the cutting surface above the cutting edge, the height of the cutting surface of said second-mentioned blade increasing gradually in a direction from its forward end toward its rearward end. 4. A land smoother, comprising a frame adapted to be moved in a forwardly direction over the ground surface, and a pair of blades on the frame extending at acute angles to and on opposite sides of a line parallel the direction of movement of the frame, said blades intersecting at their forward ends, and each blade having a vertical cutting surface with a lower cutting edge and a horizontal capping surface which extends forwardly of the cutting surface above the cutting edge, the height of said cutting surface decreasing gradually in a direction from the forward end to the rearward end of the blade to substantially a vanishing point at its rearward end. 5. A land smoother of the character defined in claim 4, including at least one other pair of blades on the frame forwardly of one of the first-mentioned blades, said other pair of blades extending at opposite disposed acute angles to the direction of movement of the frame and having their rearward ends spaced apart to permit soil to pass therethrough for delivery to the cutting surface of said first-mentioned pair of blades near their forward ends. 6. A land smoother of the character defined in claim 5, wherein each blade of the second-mentioned pair of blades also has a vertical cutting surface with a lower cutting edge and a horizontal capping surface which extends forwardly of the cutting edge, the hEight of the cutting surface of each blade of said second-mentioned pair increasing gradually in a direction from its forward end to its rearward end. |
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