Abstract: A toner cartridge dispenses toner for a printing apparatus. The cartridge comprises a housing having an internal cavity and a series of openings through a sidewall of the housing. An axially reciprocating slide includes a series of openings that are selectively aligned with the housing openings to discharge toner from the cavity. An agitating mechanism operates within the cavity and in response to paper advancement through the printing apparatus to facilitate discharge of toner from the cartridge.

Abstract: A blade assembly for cutting herbaceous terrestrial vegetation at a cutting speed of from about 1,000 to about 10,000 revolutions per minute, wherein said blade assembly is comprised of a U-shaped blade which has a Rockwell C hardness of from about 37 to 40, a flare resistance of less than about 15 degrees, and a bending resistance of less than about 5 degrees, and wherein said U-shaped blade is an integral, symmetrical member comprised a vertically-extending left cutting edge, a vertically extending right cutting edge, and a rotating support member connected to said left and right cutting edges, wherein:(a) said left cutting edge, said right cutting edge, and said rotating support member are integrally formed into a substantial U-shaped structure,(b) each of said left cutting and right cutting edges forms an angle with said rotating support member of from about 90 to about 95 degrees,(c) said U-shaped blade is from about 2.0 to about 15.0 inches long, from about 1.0 to about 3.