Abstract: An improved siphon dispenser has a hollow body divided into measuring and liquid receiving chambers by a partial partition. A lower neck portion has an air supply tube and a liquid supply tube. An elongated pouring spout is mounted through the body with the inner end positioned within a siphon tube mounted to the partition. A plurality of different length spouts having shoulders intermediate their length provides for accurate releasable mounting in the body via a boss integral to the body and a cap which has threads or, alternatively, a snap fit connection. The air supply tube has a restricted aperture for inhibiting liquid flow while allowing free flow of air. One restricted aperture includes an hourglass-shaped orifice with smooth upper and lower surfaces to minimize draining liquid adhering thereto. Another employs a ball-in-cage affixed to the lower end of the air tube with a lateral aperture above the cage that allows for air flow when in a pouring condition.

Abstract: The measuring dispenser includes a fixed assembly having liquid and air passages an external guide, a slidable assembly having pouring, measuring and connecting chambers and an internal guide slidably sealed on the external guide to slidably mount theslidable assembly on the fixed assembly. A valve assembly is actuated by the slidable assembly which is spring biased to a normal position closing the outlet valve for sealed storage and measuring. A manual operator adjacent the guide and top of the bottle provides for convenient signle hand gripping of the bottle and manual operation to move the slidable assembly to its dispensing position. The valve assembly functions to push liquid to initiate dispensing pouring flow from the measuring chamber. An external air vent is connected only to the pouring chamber, and an improved connecting chamber with air passage and liquid passage to maintain separated liquid and air flows to avoid air lock between the dispenser and bottle are also provided.