Patent ID: 7299837

Claim:
A planing heads positioning device to be used with an automatic planing machine having a main frame, for planing sides of a piece of lumber moving along a travelling course, said device comprising: a planing assembly comprising a first planing head and a second planing head respectively arranged on opposite sides of the travelling course of the piece of lumber and defining a planing width therebetween, said planing assembly further comprising a first support and a second support respectively supporting the first and second planing heads, the first support being slidably mounted to the main frame, and the second support being operatively connected to the first support; a primary positioning mechanism operatively connected to the first support to position the planing assembly relative to the main frame; a secondary positioning mechanism operatively connected to said first and second supports to position said second support relative to the first support, thereby changing the planing width, to plane the sides of the piece of lumber.