| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | Improvement in sulky-harrows | US136564D | US136564A | 1873-03-04 | ||
| 142 | Improvement in soil-pulverizers | US122643D | US122643A | 1872-01-09 | ||
| 143 | Improvement in harrows | US110142D | US110142A | 1870-12-13 | ||
| 144 | Improved pulverizing attachment for plows | US99236D | US99236A | 1870-01-25 | ||
| 145 | Improvement in plows | US81148D | US81148A | 1868-08-18 | ||
| 146 | Improvement in plows | US55684D | US55684A | 1866-06-19 | ||
| 147 | markham | US39411D | US39411A | 1863-08-04 | ||
| 148 | Improvement in hillside-plows | US21306D | US21306A | 1858-08-31 | ||
| 149 | Improvement in plows | US17579D | US17579A | 1857-06-16 | ||
| 150 | Reversible plough/seed preparation device combination | US583101 | 1996-01-16 | US5713421A | 1998-02-03 | Magne Skjaeveland |
| An integrated combination of a reversible plow and a soil preparation device which includes a headstock, a carrying beam, a carrying arm mounted at one end of the combination, and at its other end having a swivel mounting. The carrying beam is mounted on a mounting block. The carrying arm is coupled with the mounting block so that the soil preparation device can take up a cooperative working position automatically after each plow body reversal. The carrying arm is adjustably mounted on the mounting block via a pivotable coupling. | ||||||
| 151 | Reversible tillage attachment for bidirectional mold board plow | US664197 | 1991-03-04 | US5172769A | 1992-12-22 | Clifford A. Lunsford, Jr. |
| A tiller attachment for switchable bidirectional mold board plow which is adapted to be mounted onto the tool bar of the plow. The attachment includes a pair of axially spaced apart frame members which support arms joined at a right angles at a pivot point. The frame members lie in parallel spaced apart planes perpendicular to the axis of the tool bar and are pivotable from the right to the left side thereof. Tine bars are pivotably mounted to free ends of the frame members and are rotatable into ground engaging positions. An actuator which is responsive to the position of the plow rotates the frame members so that the tines firmly engage the ground behind the plow. | ||||||
| 152 | Agricultural furrowing assembly | US799553 | 1977-05-23 | US4173261A | 1979-11-06 | Willis Wells |
| An assembly for creating furrows in a freshly plowed field. The furrows, two to three feet apart, are usually created in the fall and are useful for retaining moisture in the soil during the winter months and are helpful in preventing soil erosion by the wind. The furrowing assembly is detachably mounted on a mulcher bar assembly which is mounted to a moldboard plow. The mulcher bar assembly includes an elongated bar having several chisel-type field cultivators downwardly extending in a soil-engaging position. The orientation of the mulcher bar may be reversed so that rod-like teeth members extending therefrom are in a soil-engaging position for mulching in the spring. Thus, depending upon the orientation of the mulcher bar, the apparatus may be used for either mulching or furrowing. | ||||||
| 153 | Harrow attachment for roll-over plow | US3523584D | 1968-01-29 | US3523584A | 1970-08-11 | GODBERSEN BYRON L |
| 154 | Universal hitch for towing tilling implements | US3476191D | 1966-08-22 | US3476191A | 1969-11-04 | SCHLABS CHARLES V |
| 155 | Harrow hitch | US45398465 | 1965-05-07 | US3357500A | 1967-12-12 | DAVID HARRIS HAROLD |
| 156 | Plow mounted harrow | US45926365 | 1965-05-27 | US3294180A | 1966-12-27 | BERGMANN RAYMOND W; ALBERS LOWELL W |
| 157 | Toothed harrow attachment | US6949960 | 1960-11-15 | US3100018A | 1963-08-06 | SOKOLOWSKI HENRY J |
| 158 | Disk attachment for a plow | US48510155 | 1955-01-31 | US2880813A | 1959-04-07 | WISEMAN THOMAS A |
| 159 | Hitch mechanism for connecting implements in tandem | US39855653 | 1953-12-16 | US2780478A | 1957-02-05 | FORSYTH CLARK H |
| 160 | Mulcher attachment for plows | US63377445 | 1945-12-08 | US2568572A | 1951-09-18 | ZEE HARRY VAN |
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