is fed to the cutting spindle of a veneer lathe employed as a working machine, the log 7 may be fed to a working machine such as an apparatus provided with a cutter 59 as explained below.Namely, the log 7 is often partially accompanied with radially projected portions which are protruded from the surface of the log 7 due to an influence of knots, so that if the log 7 is turned or cut as it is by