History of Non-Selective Applicators<BR>1909  Insecticide Wiper <BR>1940s  burlap sack tied to spray boom <BR>1966  wax bar <BR>1970  recirculating sprayer <BR>1977  carpet roller <BR>1978  rope-wick <BR>1979  wet apron <BR>1980  continuous belt <BR>1982(?)  fabric, sponge or fiber brush wiper <BR>1983  rotary wiper<BR>Source:  C.G. McWhorter and M.R. Gebhardt, eds. 1987.  Methods of Applying Herbicides.  WSSA Monograph Number 4, pages 207-229.<BR>