Add to ORKGThesis describes machines and mechanical lines for the processing of wood waste - chippers. The teoretical part reports about chippers and their ulitization. Thesis introduces basic division of chippers with presentation of basic types of crushing devices. Czech and foreign producers are presented with their produced types of machines. At the end of the teoretical part are described individually machines and machinal lines with complete work process. This process is used for felling and following disposal of wood mass in wood lands and in cities. In the practical part thesis compares desinged machine sets in field laboratory mensuration. Measured values were compared. Costs and economical aspects of the compared machine lines are quantified...