Earth working – Lawn aerator or perforator – or plug remover – Earth removing
Patent
1977-11-07
1979-04-10
Shapiro, Paul E.
Earth working
Lawn aerator or perforator, or plug remover
Earth removing
111 89, 172112, A01B 4502
Patent
active
041483626
ABSTRACT:
A lawn perforating machine for forming rows of holes in the ground comprises a perforating roller which is adapted to roll on the ground and whose peripheral surface carries perforating tubes mounted for pivotal movement about axes extending parallel to the axis of the roller so that from the beginning to the end of their contact with the ground their axes remain substantially perpendicular to the ground. Part of the periphery of the roller is enclosed by a guide plate to intercept plugs of earth formed by the perforating tubes. In one embodiment a spring comb is disposed behind the roller to produce clean holes even in wet ground.
REFERENCES:
patent: 1914915 (1933-06-01), Handler
patent: 2127510 (1938-08-01), Fulton
patent: 2700926 (1955-02-01), Goit
patent: 2750860 (1956-06-01), Zanola
patent: 3084493 (1963-04-01), Kucera
patent: 3224512 (1965-12-01), Alexander
patent: 3429378 (1969-02-01), Mascaro
patent: 3590928 (1971-07-01), Mirus
patent: 3739857 (1973-06-01), Little
patent: 3834464 (1974-09-01), Carlson et al.
patent: 3881553 (1975-05-01), Angeski
Shapiro Paul E.
Wolf-Gerate GmbH
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