Knife holder

Details Knife holder Knife holder

1986-03-24

1987-04-21

Bray, W. D.

Woodworking

Rotary cutter

Having slotted bit seat

82 36R, 144117R, 144218, 407 41, 407 49, 407 50, B26D 112, B27G 1304

Patent

active

046588752

ABSTRACT:
Improvements in standard planing knife holders for standard disposable double-edged planing knives which include spring means carried by the holders to engage the bottoms of related knife-receiving channels in related planing knife driving shafts to normally yieldingly urge the holders and their related knives radially outward in the channels and relative to related screw actuated clamping bars within said channels and engaging the holders and knives. An improvement comprises permanent magnets carried by the holders with south poles spaced from opposing rear surfaces of related channels and with north poles contacting and holding the knives assembled with the holders. The improvements also include secondary permanent magnets carried by the holders with south poles spaced from the knives and clamping bars and north poles contacting and holding the holders on said rear surfaces. The improvements include friction means at the opposing rear surfaces of the holders and channels to frictionally resist planar movement therebetween and including spring loaded balls shiftably carried by the holders and yieldingly engaging the rear surfaces of the channels.

REFERENCES:
patent: 874871 (1907-12-01), Shimer
patent: 3854511 (1974-12-01), Maier
patent: 4194545 (1980-03-01), Kostermeier
patent: 4449556 (1984-05-01), Colton
patent: 4530263 (1985-07-01), Muntel

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