The claim refers to a blower for cleaning the harness return elements on a loom. A nozzle is slidable by traverse means along the loom frame base and is connected to a compressed air source. The nozzle is located under the lower terminal end of the harness return elements and is directed in such a manner that blowing takes place in a direction, the axis of which is substantially parallel to the extension of the return elements close to the terminal end. IPC D03J.