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A powder measure device which includes a drum having two apertures and a metering piston assembly wherein the metering piston includes means for changing the diameter of the operative end of the metering piston. Thereby, only a single metering piston assembly is required and is operative with either

A powder measure device which includes a drum having two apertures and a metering piston assembly wherein the metering piston includes means for changing the diameter of the operative end of the metering piston. Thereby, only a single metering piston assembly is required and is operative with either bore of the drum. To insure a uniform discharge from the device, the device includes an adjustable baffle.

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An apparatus for discharging a metered quantity of flowable material which comprises: (a) a housing having an inlet end and a discharge end, said inlet end being adapted to receive a reservoir for containing flowable material, said housing including a conduit which extends from said inlet end to sai

An apparatus for discharging a metered quantity of flowable material which comprises: (a) a housing having an inlet end and a discharge end, said inlet end being adapted to receive a reservoir for containing flowable material, said housing including a conduit which extends from said inlet end to said discharge end and a chamber which extends transversely of said conduit; (b) a drum rotatably positioned within said chamber, said drum including at least first and second bores extending therethrough, the axis of each of said bores being transverse to the axis of said drum, said first bore including an upper portion having a diameter smaller than the lower portion of said first bore, and said second bore including an upper portion having a diameter larger than the upper portion of said first bore; (c) a metering piston assembly removably disposed in the lower portion of one of said bores, the lower portion of both of said bores being adapted for receiving said metering piston assembly, said metering piston assembly comprising, (i) a sleeve, (ii) a metering piston movably disposed within said sleeve, the distal end of said piston extending into the upper portion of said bore and having outer diameter substantially equal to the diameter of the upper portion of said first bore, (iii) means mounted on said piston for increasing the outer diameter of the distal end of said piston to substantially equal the diameter of the upper portion of the second bore when said metering piston assembly is disposed in the lower portion of said second bore, and (iv) means for adjusting the position of the distal end of said piston within said bore; and (d) means for securing said metering piston assembly to said drum.