A Unique, Patented,
Uplocking Wedge Design.

This is an uplocking wedge design which distributes the knife holding forces evenly along the entire length of the gib for maximum efficiency as compared to the conventional gib and gib screw system which only provides point load forces at the location of the gib screw.

With the conventional cutter head, the gib screw is mounted in the periphery of the cutter head body and applied to a gib which in turn is forced against the knife. The gib screw is directed against the gib at an angle.

As mentioned above, the gib screw only provides point loading against the gib. Subsequent attempts at increasing the number of knives in these heads requires that the angle at which the gib screw is applied becomes smaller and smaller in order to gain space on the periphery to increase the number of knives. This leads to less and less force applied to the gibs and knife holding forces are reduced. This can result in knife slippage and premature wear of the cutter head body.