| 摘要 |
1,267,460. Soil working tool. N. H. PETERSEN. 7 May, 1969 [8 May, 1968], No. 23273/ 69. Heading A1B. A resiliently mounted harrow tooth comprises a soil working part having a tooth stem 4 intermediate a pair of shares 5, the stem 4 being adjustably clamped to a spring element 1 by a pair of plates 3, e.g. bolted together, so that, in use, one share is operative and one is inoperative. The shares may be pressed into a "V"-shaped cross section. |
