Machine for raking or sweeping

Details Machine for raking or sweeping Machine for raking or sweeping

1980-06-02

1981-11-10

Hirsch, Paul J.

Harvesters

Motorized harvester

Having motor on ground-supported carrier

5640014, A01D 702

Patent

active

042990793

ABSTRACT:
A pair of laterally spaced, upwardly extending arms are pivotally attached at their lower ends to the sides of a wheeled frame for oscillatory movement about a horizontal axis. A transverse member is pivotally connected to the upper ends of the arms. A trio of rearwardly and downwardly extending arms are secured at laterally spaced locations to the transverse member and are oscillatable about an elevated horizontal axis, each of the last-mentioned arms having a sweeping unit in the form of a lawn rake or bristled broom attached to its rear or free end. Still another arm extends forwardly from the transverse member and has its forward end pivotally connected to a power-operated crank. As the machine is moved across the surface to be swept, as when raking a lawn, the rakes are repeatedly dragged forwardly, raised and then lowered so as to form a windrow of leaves and other debris. The movement of the rakes or brooms is at a much faster rate than the machine is pushed so that the ground is effectively raked or swept. A clutch arrangement permits the raking of sweeping movement to be halted at any time under the control of the walk-behind operator.

REFERENCES:
patent: 3417554 (1968-12-01), Sudhoff
patent: 3777460 (1973-12-01), Mokros
patent: 3789590 (1974-02-01), Wilson
patent: 3824773 (1974-07-01), Brubaker
patent: 3921373 (1975-11-01), Rubin
patent: 4009560 (1977-03-01), Wells

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