the weaving machine or loom 1 will be seen to comprise side frame members or plates 2 and 3 a drive motor 4 a main shaft 5 a weft or filling thread supply roll 8 remaining outside of the loom shed a picking or shot mechanism 9 a catch mechanism 10 harnesses 11 a reed 12 and a fabric roll or breast beam 14 the weft or filling thread 6 is carried into the loom shed by means of an air jet from a main nozzle 16 and the weft thread 6 is supported within the shed by sequential or relay nozzles 17 these sequential or relay nozzles 17 successively receive air as the tip 18 of the weft thread 6 advances giving rise to a travelling air current the fabric or cloth 13 being woven is wound up on the fabric roll or breast beam 14 when the reed 12 is to be cleaned the cleaning device or apparatus designated in its entirety with the reference numeral 21 and represented in more detail in the fig2 through 5 can be set or mounted upon the reed 12 after halting the weaving machine 1 as is indicated in broken lines in fig1 a pneumatic drive motor 23 is mounted in a housing 22 of the cleaning device or apparatus 21 and is supplied from a suitable compressed air source.