Harvesters – Raking and loading – Walking rake
Patent
1992-07-06
1994-01-04
Melius, Terry Lee
Harvesters
Raking and loading
Walking rake
5640002, 5640011, A01D 700
Patent
active
052749894
ABSTRACT:
A lawn-cleaning device for picking up debris, comprising a rolling drum and spikes, tines and the like for collectively piercing leaves and the like includes an improved means for periodic protrusion and retraction of the spikes, tines or the like through spaced apart suitably-shaped openings in the rolling drum. Leaves and the like are pierced for collection on the spikes during protrusion and debris pierced by the spikes is released from the spikes and collected in a debris receiver during retraction. The improved means includes an array of spaced-apart spikes extending radially from a cylindrical element that is rotational about its cylindrical axis and is supported inside the rolling drum with its axis of rotation parallel to the axis of rotation of the drum. The spikes are adapted to retractible protrusion from the interior through spaced-apart openings in the cylindrical wall of the drum, whereby both the cylindrical element and the drum rotate in the same rotational sense with each one of the spikes periodically penetrating through and retracting through openings in the wall of the rotating drum.
REFERENCES:
patent: 3451488 (1969-06-01), Taketa
patent: 3934390 (1976-01-01), Ballard
patent: 3947912 (1976-04-01), Michaels
patent: 4974406 (1990-12-01), Russ
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