| 摘要 |
A new combination farm implement is disclosed. A cultivator is equipped with detachable mounted harrows and detachable packers. When the cultivator is used for direct seeding, narrow openers cut through the earth, and seed, transported from an air seeder by pneumatic means, is placed immediately behind the openers. Thereafter a series of packers, mounted to the rear of the cultivator, pack the seed. The invention lies in spring tensioned support arms which support the packers or harrows. Through various adjustments, these support arms can generate packing pressures from .5 psi to 3.5 psi, depending upon soil conditions. The same implement with the narrow openers and packers removed can be equipped with sweeps and mounted harrows and seed while cultivating to kill weeds or act as a general soil preparation device. The adjustable spring tensioned support arms are adjusted to relax downward pressure when the harrows are mounted in field operation. The unit as a whole, therefore, serves as a seeding or general tillage device, saving the operator extensive capital costs in farm machinery.
|
