Device for making sowing furrows in a lawn

Details Device for making sowing furrows in a lawn Device for making sowing furrows in a lawn

1994-03-11

1995-03-14

Crowder, Clifford D.

Earth working

Rolling, rotating or orbitally moving tool

Detailed disk structure per se

111901, 111143, A01B 1516, A01B 4904

Patent

active

053969626

ABSTRACT:
A device for making sowing furrows in a lawn, provided with a mobile frame having a number of disc-like cutting members disposed adjacently of each other transversely of the direction of forward movement thereof and drivable round a horizontal shaft. According to the invention the cutting edge of each disc-like knife has a continually varying distance to the shaft of the knife, this such that the difference between the largest and smallest distance to the shaft of the knife lies in the order of magnitude of the cutting depth and the knife has one or more outward protruding lobes.

REFERENCES:
patent: 407062 (1889-07-01), Cook
patent: 409818 (1889-08-01), Bell
patent: 1747525 (1930-02-01), Nagy
patent: 1762907 (1930-06-01), Wolf
patent: 2136607 (1938-11-01), Benjamin
patent: 2164214 (1939-06-01), Lindgren
patent: 2197424 (1940-04-01), Benjamin
patent: 2989129 (1991-06-01), Sisk
patent: 3398616 (1968-08-01), Elineau
patent: 4217835 (1980-08-01), Fox
patent: 4250968 (1981-02-01), Fox

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