Apparatus for collecting sawdust produced by a circular power saw

Dust collecting apparatus for circular power saws comprising a guard casing for enclosing a substantial portion of the power saw's circular blade, an integral sleeve fixedly attached to and supported by said casing, a tube having a circular cross section, said tube being slidably received in said sleeve so that one end of said tube can be adjustably positioned relative to said circular blade, the other end of said tube being adapted for connection to a vacuum source, said tube having a rectangular slot extending longitudinally from said one end thereof for accommodating therein a peripheral segment of said blade and said sleeve having a rectangular slot corresponding generally to the sides of the slot in said tube, and means on said sleeve limiting longitudinal movement of said tube in the direction of said circular blade, whereby an appreciable amount of sawdust produced by said blade is directed into said tube and induced to flow therethrough by said vacuum source.