Adjustable planer extension table

An automatically adjusting feed table extension for use with a bench type machine comprising:

• an elongate planer extension table fixed at a first end to the feed table of a planer, jointer or similar machine and fixed proximate its second end to vertical movement means, said extension being coextensive the fixed work-feed axis of such machine;
• vertical movement means fixed proximate said extension table second end and adapted to move with said second end, vertically;
• and coupled translation means comprising an essentially vertical push rod journaled to said feed table;
• a rigid pivotable dogleg member into which is journaled the second end of said vertical push rod at a first end of said dogleg, to translate the motion of said vertical push rod into rotary motion about a fulcrum in which said dogleg is pivotally mounted;
• and a translating rod pivotally mounted at one end to the rotary motion-effecting end of said dogleg and at the other end pivotally journaled in said vertical movement means to couple and translate the vertical motion of said feed table to an orthogonal translational movement for employment by said vertical movement means, said translation means to translate vertical movement of said feed table to said vertical movement means and thence to said second end of said extension, whereby the vertical motion of said feed table and fixed first extension end is transferred through said coupled translation means to said vertical movement means to effect motion of said extension second end that is identical to said feed table motion.