Abstract: An adjustable dose dispenser having a measuring chamber of constant cross-section defined in a housing wherein an end of the chamber is selectively placed in communication with a reservoir containing flowable material to fill the chamber and with a passage to discharge material from the dispenser, and including a piston movably mounted in the housing and having an end face located in the measuring chamber so as to define the measuring volume between the piston end face and the end of the chamber. A manually operable drive mechanism is movably carried by the housing and has formations thereon operatively engaging formations on the piston so that upon movement of the drive mechanism the piston end face is moved along the measuring chamber to vary the volume thereof and so that dimensional control of the volume of the measuring chamber is determined by tolerance associated with misalignment of the formations on the piston and drive mechanism.

Abstract: A dispenser for flowable materials in which the flowable material is moved from a reservoir for such materials into a variable volume measuring chamber, the volume of which is adjustable only by an external key, and thereafter to a discharge opening remote from the measuring chamber, which opening has a closure to control dispersion of the granules.

Abstract: A dispenser for capsules or the like utilizes a turnstile member rotatable in only a single direction to transport the capsules from a reservoir to an exit port. Fingers on the turnstile arms interleave with corresponding fingers on the dispenser housing to prevent a capsule from being rotated beyond the exit port and back into the housing. A propeller member in the reservoir orients the capsules in a predetermined orientation before they are fed into the turnstile member. A cap on the exterior of the housing which rotates the turnstile member utilizes a bayonet-type detent mechanism to bias the cap into successive dispensing positions. The cap must be pushed toward the housing to be rotatable to the next dispensing position.

Abstract: A hand held and operated apparatus is provided for adjustably measuring and dispensing a flowable material. A vessel for containing the flowable material is positioned on a housing for movement between a first measuring position and second discharge position. An adjustable member is rotatably positioned with the housing and opposite the vessel for variably adjusting the quantity of material to be dispensed.