Knife assembly for chipper

Details Knife assembly for chipper Knife assembly for chipper

1990-05-07

1990-12-18

Bray, W. Donald

Woodworking

Slicer

Rotary disk

144241, 241 92, 241298, B27C 710, B02C 1818

Patent

active

049779397

ABSTRACT:
A chipper knife blade assembly for a rotary disk chipper has first and second flat knife blades of substantially identical construction, with one of the blades serving as a chipper blade and the other serving as a counterknife supporting the chipper blade. The counterknife is seated on a sloping support surface in a recess in the disk and has its proximal edge reposed against a support or a thrust bar. A bolt-down clamping member has a shouldered surface with a flat portion clamped down against a top surface of the chipper knife blade, and with a shoulder supporting the proximal edge of the chipper blade. In a preferred embodiment, the chipper blade projects about one-half inch to three-quarters inch beyond the cutting edge of the counterknife blade. With this arrangement, a warn cutting blade can serve a second useful life as a counterknife, absorbing the wear that results from the chips moving at high speed into the chip slot.

REFERENCES:
patent: 3542302 (1970-11-01), Salzmann, Jr.
patent: 4298044 (1981-11-01), Hansel et al.
patent: 4346744 (1982-08-01), Beer et al.
patent: 4503893 (1985-03-01), De Mopoulos
patent: 4694995 (1987-09-01), Holmberg et al.
patent: 4784337 (1988-11-01), Nettles et al.
patent: 4887772 (1989-12-01), Robinson et al.

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