A machine tool has a work table which defines a working surface and has a cutting tool which is attached to and movable with respect to the work table. The position of the cutting tool with respect to the working surface is controlled by a mechanism which elevates the cutting tool with respect to the...http://www.google.com/patents/US6453786?utm_source=gb-gplus-sharePatent US6453786 - Blade and motor carrier with height/angle adjustment mechanism
