of the blades of each of the banks 12 and 13 the delivery and justification system 25 is provided for pulling the laterally severed boards or strips 24 and to remove the board or strip 24 from the work area on the one hand and on the other hand to cancel the curvature of the board that occurred due to the severing or slicing operation the remaining squared timber 26 is removed by means of the delivery means 27 which is only schematically illustrated during operation of the apparatus the carriage 6 with the millers 8 and the guide faces 10 are brought together to a defined spacing that corresponds to the diameter of the log 9 to be processed and are locked in this position the actuating drive 15 of the frame 14 is in a retracted position so that the frame 14 is seated against the stops 18 of the carriage 6a when after its two sides have been flattened by the millers 8 a log 9 enters between the guide faces 10 and into the light barrier 11 the light barrier 11 creates a signal indicating a presence of the log and initiates the hydraulic actuating drive 15 to press the bank 13 of blades disposed in the frame 14 against the surface of the log with operating logs having identical dimensions the blade group or bank 13 can remain in its preset position so that the logs can be continuously processed without.