Rotary mower cutter disc having self-cleaning knife mount...

Details Rotary mower cutter disc having self-cleaning knife mount... Rotary mower cutter disc having self-cleaning knife mount...

A - Human Necessities

01

D

A01D 34/82 (2006.01) A01D 34/73 (2006.01)

Patent

CA 2328744

A rotary cutter disc includes shields for the nuts of the knife mounting bolts. Each shield includes a U-shaped well in which a respective one of the nuts is located, the well being oriented so that its open side is directed away from the center of the disc, whereby centrifugal force ejects crop particles and other matter from the well. In one embodiment, the shield is provided with inclined wear surfaces which also serve as crop guide vanes. In a second embodiment, the shield is integral with a crop guide vane. In each embodiment, the underside of the shield is provided with a locating lug which is adjacent the knife mount bolt hole in the bottom wall of the shield. The disc is provided with an elongated knife mounting bolt hole and the shield locating lug is positioned to enter the elongated hole alongside the knife mounting bolt so as to properly orient the shield and keep the shield from rotating when the mounting bolt nut is being screwed on or off. In the case of the second embodiment, the crop guide vane is also provided with a locating lug that mates with hole provided in the disc.

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