Earth working – Lawn aerator or perforator – or plug remover – Earth removing
Patent
1990-01-04
1990-12-04
Reese, Randolph A.
Earth working
Lawn aerator or perforator, or plug remover
Earth removing
172430, 175313, 294 507, A01B 124, E21B 2500
Patent
active
049746820
ABSTRACT:
A hammer driven soil coring device for use on golf course greens having a cylindrical cutting tube that has a lower cutting edge and longitudinally extending guide slots which serve as a guide for an ejector plate. Affixed to the cylindrical cutting tube is a cutter cap to which is affixed a support tube. The support tube has one vertically oriented slot. The slot serves as a guide for a stop which serves as a device to control the depth that a tamping plate achieves when the cylindrical cutting tube is driven into the surface of the green. A hand knob extends through the slot into a cylindrical rod for extending the tamping plate beyond the cylindrical cutting tube and to lock the tamping plate into a fixed position. A bubble level is located within the support tube. An impact head is located at the end of the tube with an aperture that allows the operator to view a bubble level. A handle extends perpendicularly through the impact head as well as the support tube and is affixed to each by means of a spring lock pin.
REFERENCES:
patent: 127150 (1872-05-01), Cook
patent: 588833 (1897-08-01), Overbey
patent: 785742 (1905-03-01), Lipps
patent: 1866073 (1932-07-01), Aberle
patent: 2708593 (1955-05-01), Benoist
patent: 3149873 (1964-09-01), Mockabee
patent: 3444938 (1969-05-01), Ballmann
patent: 3534994 (1970-10-01), Sterk
patent: 4715634 (1987-12-01), Mueller et al.
patent: 4884638 (1989-12-01), Hoffman
Reese Randolph A.
Thompson Jeffrey L.
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