Earth working – Lawn aerator or perforator – or plug remover – Earth removing
Patent
1989-05-03
1989-12-05
Johnson, Richard J.
Earth working
Lawn aerator or perforator, or plug remover
Earth removing
172 25, 172430, 175 40, 175313, 175316, 175403, 294 507, E21B 2500, A63B 5700, A01B 4504
Patent
active
048846384
ABSTRACT:
A soil coring device with a core ejector mechanism that has a cylindrical cutting tube with two (2) 180 degree opposed tee slots that serve as a guide for an ejection plate, affixed to a cylindrical cutting tube is a tube with a vertically oriented slot attached perpendicularly thereto is a handle to which is affixed a bubble level. Located on the tube is a threaded locking knob that extends through the slot and communicates with a short presetting locking cylinder. Also located on the tube is a threaded locking hand knob that extends through the slot and communicates with a cylindrical rod to which a tamping plate is permenently attached. In operation, the soil coring device handle is rotated causing the cylindrical cutting tube to enter the soil to the predetermined depth, that has been preset by tightening the threaded locking knob into the short presetting locking cylinder, until ejection plate makes contact with the surface. The cylindrical cutting tube is removed from the hole, is then placed into the existing hole on the green, the threaded locking hand knob is released, both feet are placed on opposite sides of the cylindrical cutting tube and positioned on top of the ejection plate, the handle is pulled upwards ejecting the core into the hole. Then the tamping plate is displaced 2"-3" beyond the end of the cylindrical cutting tube, the core is then tamped with a tamping plate to achieve a level surface.
REFERENCES:
patent: 370810 (1887-10-01), Newman
patent: 992120 (1911-05-01), Walling
patent: 1692436 (1928-11-01), Deane
patent: 2030770 (1936-02-01), Smith
patent: 3444938 (1969-05-01), Ballmann
patent: 3756323 (1973-09-01), Mays
patent: 3817337 (1974-06-01), Panak
patent: 4585072 (1986-04-01), Martinez
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