Knife clamp for wood planing heads

Woodworking – Rotary cutter – Having slotted bit seat

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Details

144117R, 144162R, 407 41, 407 46, 407 49, B26D 112, B27G 1304

Patent

active

051634902

ABSTRACT:
A rotatable wood planing apparatus that includes a cylindrical planing knife body provided with a plurality of longitudinally extending, forwardly inclined, radially outwardly opening channels for holding knives. Parallel to each of the knife holding channels is an adjoining channel for holding a clamping means such as a gib for clamping said knives in the channels. The rear surfaces of the knife-holding channels and the forward surfaces of the knife-clamping channels are in planes that converge outwardly. A knife-holding clamp is provided to securely hold the knife in a desired position. The knives can accurately be fitted and secured into the clamps prior to insertion into the knife-holding channels.
Means such as bolts or screws adjacent the rear of the knife-holding channels are provided for retaining the clamp and knife combination in the channel. A gib or wedge is fitted in the clamping channel to lock the clamps and knives in place upon elevation of the gib in its channel. The gib has an angled surface for engaging the knife clamp and urging it, as the gib is raised, toward the rearward surface of the channel. The knife-holding channel has a width sufficiently greater than that of the clamp to permit pivoting of the clamp away from the retaining means for removal of the clamp-knife combination from the channel when the gib is lowered.

REFERENCES:
patent: 1305650 (1919-06-01), Heggen
patent: 1315536 (1919-09-01), Usher
patent: 3854511 (1974-12-01), Maier
patent: 4055101 (1977-10-01), Collins
patent: 4194545 (1980-03-01), Kostermeier
patent: 4355673 (1982-10-01), Kostermeier
patent: 4658875 (1987-04-01), Grabovac

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