Method of impregnating timber - by using single needles or gangs of needles, either fixed or rotating, and vibrating them to cause penetration

摘要

A method of impregnating timber uses either a fixed or rotating needle which is vibrated simultaneously with the workpiece so that the wood is penetrated. The needle has an overload safety device. USE/ADVANTAGE - Gangs of needles in a common holder can be used according to the profile of the workpiece.