Title: Penetrating machine

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.

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Other info:

Inventors: Orth, Gunther (Birken, DE, US)

Application Number: 849473
Filing Date: 1977-11-07
Publication_date: 1979-04-10
Assignee: Wolf-Gerate GmbH (DE)
Primary Class(es): 172/22 111/89, 172/112
Other Classes:
US Patent Ref:

1914915	Jun, 1933	Handler	111/89.
2127510	Aug, 1938	Fulton	111/89.
2700926	Feb, 1955	Goit	172/22.
2750860	Jun, 1956	Zanola	172/240.
3084493	Apr, 1963	Kucera	172/112.
3224512	Dec, 1965	Alexander	172/22.
3429378	Feb, 1969	Mascaro	172/22.
3590928	Jul, 1971	Mirus	172/240.
3739857	Jun, 1973	Little	172/22.
3834464	Sep, 1974	Carlson et al.	172/22.
3881553	May, 1975	Angeski	172/22.

Other Refs:
Primary Examiner: Shapiro, Paul E.
Assistant Examiner:
Attorney: Ostrolenk, Faber, Gerb & Soffen