Active harrow

Earth working – Rolling – rotating or orbitally moving tool – Tool has circumferentially spaced teeth – tines – blades or...


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172177, 172540, A01B 2102, A01B 2104, A01B 2300




An active harrow comprises a rotatable cylindrical body on the outer surface of which is mounted a plurality of tines which project outwardly for engaging the ground. The rotatable body is carried in a yoke and supported from a tool bar in a manner which allows the axis of the rotatable body to be adjusted relative to the tool bar. The tines are inclined so that they lie in axial planes but inclined relative to the radial plane of an angle in order of to Each tine includes a main body portion and an end portion which is cranked. This orientation of the tines provides an effective harrowing action but prevents accumulation of trash.

patent: 322567 (1885-07-01), Stonesifer
patent: 392697 (1888-11-01), Smith et al.
patent: 500349 (1893-06-01), Pridmore
patent: 704897 (1902-07-01), May
patent: 1196954 (1916-09-01), Huebsch
patent: 1610311 (1926-12-01), Paul
patent: 1639104 (1927-08-01), Paul
patent: 2430148 (1947-11-01), Traver
patent: 2538594 (1951-01-01), Rutter
patent: 2591851 (1952-04-01), Milla
patent: 2954084 (1960-09-01), Swertfeger
patent: 3047075 (1962-07-01), Frank
patent: 3306371 (1967-02-01), Bush
patent: 3504748 (1970-04-01), Croft
patent: 3542139 (1970-11-01), Mowbray
patent: 4133390 (1979-01-01), Reaume
Calkins Flyer, Tandem Skew Treader, Calkins Manufacturing Co.
Brochure--Phoenix Rotary "Multi-Spike" Harrow.


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Profile ID: LFUS-PAI-O-1002099

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