Harrow disc gang

Earth working – Rolling – rotating or orbitally moving tool – Disk gang

Patent

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Details

A01B 700

Patent

active

040834131

ABSTRACT:
A spacer spool for a disc section of a disc harrow for preventing relative rotation between the spacer spools and the adjacent disc blades. Each of the spacer spools comprises a central portion having end portions extending outwardly from the opposite ends thereof. Each of the end portions is provided with an annular rim portion which is complimentary in shape to the adjacent disc blade. The center section of the spool is provided with a central opening for receiving an elongated shaft which is rotatably supported by the disc harrow frame. A lug is provided on each of the end portions of the spacer spool between the central opening and the annular rim portion. Each of the disc blades has a central opening formed therein for receiving the shaft and has a bolt opening formed therein spaced outwardly from the central opening. A bolt is positioned in each of the bolt openings and has its head positioned adjacent one side of the disc blade and a nut element positioned adjacent the other side of the disc blade. In the assembled condition, the head and nut of each of the bolts engages the lugs on the spacer spools positioned on opposite sides of the disc blade to prevent relative rotation between the adjacent spacer spools and the disc blade as the disc harrow is moved through the field.

REFERENCES:
patent: 323343 (1885-07-01), La Dow
patent: 1158110 (1915-10-01), Cook
patent: 2136607 (1938-11-01), Benjamin
patent: 2746371 (1956-05-01), Cook
patent: 3669193 (1972-06-01), Cooper et al.
patent: 4016935 (1977-04-01), Miller

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