Excavating – Peat excavators
Patent
1980-02-20
1981-12-15
Hafer, Robert A.
Excavating
Peat excavators
171 50, A01G 2304
Patent
active
043052134
ABSTRACT:
This invention involves new and unique apparatus suitable for safely and quickly removing a row of bare root nursery trees. More particularly, this invention teaches a lightweight and raised frame which supports a plow or blade, a power source, a seat for the operator and the controls. Weighted wheels are attached to the lightweight frame by four support members such that the wheels straddle a row of trees to be removed as the frame moves over the top of the row of trees. A U-shaped blade or plow is forced into the earth such that the blade cuts under and around the trees as the apparatus moves along a row of trees and the blade moves under the row of trees. Thus, the trees can be easily removed and the dirt shaken therefrom after the apparatus has moved past. According to one embodiment, a power source such as a small gasoline engine drives a hydraulic pump which is then used to hydraulically actuate the blade and to provide hydraulic power to four small hydraulic motors for independently driving the wheels. Thus, the lightweight frame and the weighted wheels of this invention results in four-wheel drive apparatus which is not top heavy and which is inherently safer than apparatus heretofore available.
REFERENCES:
patent: 2770076 (1956-11-01), Kluckhohn
patent: 2964860 (1960-12-01), Daniels
patent: 3594931 (1971-07-01), Yost
patent: 3601174 (1971-08-01), Shotwell et al.
patent: 3603424 (1971-09-01), Blood
patent: 3885375 (1975-05-01), Solterbeck
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