of the axle 65 for causing the axle 65 and therefore the cutter head member 61 to rotate the log transport system 11 also preferably includes a plurality of hold down means 69 spaced along the length of the first and second conveyor means 13 15 to hold the log l down on the first and second conveyor means 13 15 as the log l is transferred therealong each hold down means 69 includes a roller 79 for contacting an upper portion of the log l an arm member 73 for pivotally attaching the roller 71 to frame means 31 and means 75 for forcing the roller 71 against the log l the rollers 71 may be spiked not shown the arm member 73 preferably has a first end 73 39 pivotally attached to the roller 71 in any manner apparent to those skilled in the art such as by way of an axle 77 passing through the first end 73 39 of the arm members 73 and through the roller 71 and includes a second end 73 34 pivotally attached to the frame means 31 in any manner apparent to those skilled in the art such as by way of an axle 79 passing through the second end 73 34 of the arm member 73 and through the frame means 31 the means 75 for forcing the roller.