Multiple liquid proportional dispensing device

An apparatus for dispensing liquids by gravity comprising a first and a second container defining respectively therein a first and a second chamber, the first and second chambers having respectively first and second liquid containing portions, said containers each having at corresponding locations a vent passage and a pouring orifice for pouring liquid from the liquid containing portion, each said vent passage having an inlet end at the outside surface of the container and an outlet end inside the container, said liquid containing portions being so shaped that their cross-sections taken on planes normal to a horizontal axis of rotation at corresponding locations along the axis, are geometrically proportional, wherein the volume of the liquid containing portion of the first container is K times that of the second container and the dimension of the chamber of the first container along the axis of rotation is m times that of the second container, and the pouring orifice of the first container is C.sub.2 m.sup.1/4 K.sup.3/4 /C.sub.1 to that of the second container, where C.sub.1,C.sub.2 are the flow coefficients of the liquids to be poured from the first and second containers, respectively, the two portions having the same spatial orientation so that when they are filled to the same proportion of fullness with different liquids and the containers are then tilted simultaneously about the axis of rotation, so that the portions are tilted to the same pour angle while maintaining the vent hole at a higher elevation than the pouring orifice for each container during the pouring process, the ratio of the flow rate of liquid poured from the pouring orifice of the first container to that of the liquid poured from the pouring orifice of the second container is constant and equal to K.

An apparatus for dispensing liquids by gravity comprising a first and a second container each having a pouring orifice and a vent passage, said passage having an inlet end at the surface of the container and an outlet end inside the container, said containers being so shaped that their cross-sections taken on planes substantially normal to a horizontal axis of rotation at corresponding locations along the axis are geometrically proportional and their pouring orifices and vent passages in corresponding positions, wherein the volume of the first container is K times that of the second container and the dimension of the first container along the axis of rotation is m times that of the second container and the pouring orifice of the first container is (C.sub.2 /C.sub.1)m.sup.1/4 K.sup.3/4 that of the second container where C.sub.1,C.sub.2 are the flow coefficients of the liquids to be poured from the first and second containers respectively, said containers having the same spatial orientation so that when the containers are each filled to the same proportin of fullness with different liquids and then tilted simultaneously about the axis of rotation to the same pour angle, wherein the vent hole is maintained at higher elevation than the pouring orifice for each container during the pouring process, the ratio of the flow rate of liquid poured from the pouring orifice of the first container to that of the liquid poured from the pouring orifice of the second container is constant and equal to K.

An apparatus for dispensing liquids by gravity comprising a first and second container defining respectively therein a first and a second chamber, the first and second chambers having respectively first and second liquid containing portions, said containers each having at corresponding locations a vent passage and a pouring orifice for pouring liquid from the liquid containing portion, each said vent passage having an inlet end at the outside surface of the container and an outlet end inside the container, wherein the horizontal cross-sectional areas of the liquid containing portions at corresponding heights from the bottom are in constant proportions for all heights from the bottom, wherein the volume of the portion of the first chamber is K times that of the portion of the second chamber and wherein the area of the pouring orifice of the first container is C.sub.2 K/C.sub.1 p.sup.1/2 times that of the pouring orifice of the second container, where C.sub.1,C.sub.2 are the flow coefficients of the two liquids to be poured from the first and second containers respectively, and p is the ratio of the height of the liquid containing portion of the first container to that of the second container, so that when both liquid containing portions are filled to the same proportion of fullness with different liquids, the ratio of the flow rate of liquid dispensed from the dispensing orifice of the first container to that of liquid dispensed from the dispensing orifice of the second container is constant and equal to K.

A method for dispensing liquids by means of gravity from a pouring device comprising a first and a second container, each having a pouring orifice and a vent passage, said vent passage having an inlet end at the surface of the container and an outlet end inside the container, said containers being geometrically proportional in shape with the pouring orifices and vent passages all in corresponding locations, the volume of the first container being K times that of the second container, and the ratio of the pouring orifice of the first chamber to that of the second chamber being C.sub.2 K.sup.5/6 /C.sub.1 where C.sub.1, C.sub.2 are the flow coefficients of liquids in the first and second chambers, respectively, said method comprising

• filling the two containers to the same proportion of fullness with different liquids,
• placing the two containers so that they have the same spatial orientation,
• tilting the two containers simultaneously and in the same manner to the same pour angle while maintaining the outlet end of the vent passage at a higher elevation than the pouring orifice for each container during the pouring process,
• whereby the ratio of the volume of the liquid poured from the pouring orifice of the first container to that poured from the pouring orifice of the second container is constant and equal to K.

A method for dispensing liquids by gravity from a pouring device which includes a first and a second container each having a pouring orifice and a vent passage said vent passage having an inlet end at the outside surface of the container and an outlet end inside the container, said containers being so shaped that the cross-sections taken on planes normal to a horizontal axis of rotation at corresponding locations along the axis are geometrically proportional with their pouring orifices and vent passages in corresponding positions, wherein the volume of the first container is K times that of the second container and the dimension of the first container along the axis of rotation is m times that of the second container and wherein the ratio of the pouring orifice of the first container to the area of the orifice of the second container is (C.sub.2 /C.sub.1)m.sup.1/4 K.sup.3/4, where C.sub.1, C.sub.2 are the flow coefficients of liquids to be poured from the first and second containers, respectively, said method comprising

• filling the two containers to the same proportion of fullness with different liquids,
• tilting the two containers simultaneously about the axis of rotation to the same pour angle while maintaining the outlet end of the vent passage at a higher elevation than the pouring orifice for each container during the pouring process,
• whereby the ratio of the volume of the liquid poured from the pouring orifice of the first container to that of the liquid poured from the pouring orifice of the second container is a constant and equal to K.