Powder dispensing and cleaning apparatus

Abstract From the Canadian patent

A Method and apparatus for controlling the dispensing of "dry" powdered compositions, particularly carpet cleaning compositions, consisting of finely divided particles which descend in A stream under gravity and have oscillatory movement imparted thereto before being discharged through an orifice leading from the apparatus so as to agitate separate and propel the particles through said orifice. In the case of carpet cleaning operations depositing the finely divided discharged particles are deposited onto a surface having fibres in a substantially uniform pattern followed by working the discharged particles into the fibres through the application to the surface of a rotary brush or beater …