ELECTROSTATOGRAPHIC COPYING-MACHINE TONER DISPENSER

1,216,083. Supplying toner in metered quantities. SPERRY RAND CORP. Aug. 21, 1968 [Aug.23, 1967], No.38777/67. Heading G2H. An electrostatographic copying machine has a toner metering device comprising pivotally connected housings 14 and 27 which enclose a rotor 23 mounted on a shaft 18, such that upon relative pivotal movement of the housing 27 and 14 from the Fig.4 (not shown) position into the Fig. 3 position the rotor 23 is driven through a pawl and ratchet 36, 35, Fig.1 (not shown), to dispense a metered amount of toner to a shoot 12 feeding the developing apparatus of the machine. The housing 27 has an extension 32 which receives a disposable toner container 38. Spring fingers 41 attached to a rotor end-plate (21) Fig. 2 (not shown) engages recesses (42) to prevent retrograde movement of the rotor during return of the container 38, Fig.3, to a horizontal position