Liquid delivery valve construction

Claim 1

An automatic closing slide valve for containers carrying a liquid under pressure comprising: a valve body for sealing an opening in the container, and having a transverse liquid discharge channel; an elongated distributor slidably mounted in said valve body for sliding movement between a lower position in which liquid in said container may be discharged or said container may be filled through said slide valve and an upper position in which said slide valve prevents escape of said liquid from said container, said distributor being operable to be urged outwardly of the valve body to said upper position by the internal pressure of the container and to be manually depressed against said internal pressure by downward pressure on its upper end, said distributor having transverse channel means and an axial channel extending through said distributor from the upper end of the distributor to and into said transverse channel means; a longitudinally extending slideway formed in the valve body and terminating in upper and lower shoulders, and a lateral projection near the lower end of the distributor extending into said slideway, the lateral projection engaging said upper and lower shoulders when the distributor is in the upper and lower positions, respectively, thereby to limit the distributor from sliding beyond said upper and lower positions, said slideway and said lateral projection cooperatively preventing angular rotation of the distributor as it slides between Said upper and lower positions; conduit means for establishing communication between said container and said transverse channel means when the distributor is in the lower position; sealing means between the distributor and the valve body and below said transverse channel means for disconnectng said transverse channel means from said conduit means when the distributor is in the upper position; said transverse channel means being effective to communicate with said liquid discharge channel when the distributor is in the upper position and to be disconnected therefrom when the distributor is in the lower position; a support member fitted over the upper end of the distributor via an opening therein sized to snugly fit over said upper end, dose-measuring means on said support member for storing a predetermined amount of liquid flowing into said measuring means through said axial channel when the distributor is in the lower position and dispensing means carried by said support member for dispensing through said axial channel, said transverse channel means and said liquid discharge channel said predetermined amount of liquid stored in said measuring means when the distributor is in the upper position, said support member being replaceably detached from said upper end being operable to carry said measuring means and said dispensing means when so detached.