Technique and device for measuring fluids

A device for measuring fluids dispensed from a primary container having an upwardly opening mouth for pouring out fluid when said container is rotated in a vertical plane in a counterclockwise direction at least through its starting pour angle, the principal axis of said primary container being substantially vertical when said container is disposed in its reference position, said device comprising in combination:

• a first means comprising a measuring vessel constructed to be secured adjacent to the mouth of said primary container for measuring and dispensing a measured amount of fluid poured out from said primary container, said measuring vessel having a cross-sectional shape in said vertical plane of substantially triangular form comprising an elongated top portion and a constricted base portion at the lower end of said vessel, securing means disposed at said base portion for securing said measuring vessel adjacent the mouth of said primary container, a first lateral wall of said vessel upwardly extended from said securing means forming in said vertical plane an acute clockwise angle not exceeding about 25.degree. with the extended principal axis of said primary container, a second lateral wall of said vessel upwardly extended from said securing means forming in said vertical plane an acute counterclockwise angle of between 30.degree. and 60.degree. with the extended principal axis of said primary container, said second lateral wall terminating at its upper end in a dispensing mouth having a removable closure substantially tangential to said second lateral wall in a plane normal thereto, said elongated top portion connecting said second lateral wall including said dispensing mouth with said first lateral wall;
• and a second means for modifying the pour spout of the primary container to increase the starting pour angle thereof in said counterclockwise direction comprising a single tube having a lower end and an upper end, said lower end connectable in fluid-tight relation to the mouth of said primary container, and said upper end connected in fluid dispensing relation to said measuring vessel through an opening which is contiguous with the upper end of said first lateral wall;
• said measuring vessel being closed except for said dispensing mouth and said opening;
• said measuring vessel including:
• a first volumetric scale calibrated to measure the contents of said measuring vessel when said primary container is disposed in said reference position;
• a second volumetric scale calibrated to measure the contents of said measuring vessel in closed condition when said container is disposed at a counterclockwise angle in said vertical plane which exceeds said increased starting pour angle of said second means;
• a third volumetric scale calibrated to measure the contents entrapped in said measuring vessel when the principal axis of said primary container is disposed at a clockwise angle in said vertical plane;
• wherein said third scale includes remeasure calibration lines which radiate from the point in the upper end of the tube comprising said modifying pour spout into which fluid first flows to return to said primary container, said lines being so disposed as to intersect horizontal calibration lines on said first scale representing a series of equivalent volumes when said primary container is disposed in its reference position, and wherein said remeasure calibration lines are substantially parallel to the surface of the remaining fluid trapped in the measuring vessel when said primary container is tipped in said clockwise direction in said vertical plane at each of a progression of pour-back angles.

The method of measuring fluids dispensed from a primary container having a vertical reference position in which the mouth is disposed at its upper end, wherein said mouth includes a modifying pour spout having an upwardly extended portion which provides said primary container with a substantially increased starting pour angle when said container is rotated in a vertical plane from said reference position in a counterclockwise direction through at least a first arc, and said primary container including a measuring vessel disposed adjacent to the mouth thereof and having a coupling to the upwardly extended portion of said modifying pour spout for receiving fluid therefrom when said primary container is rotated from said reference position in said counterclockwise direction through at least said first arc, and to pour back fluid into said modifying pour spout when said primary container is rotated from said reference position in a clockwise direction through at least a third arc, said measuring vessel having a dispensing mouth with a removable closure substantially spaced apart from the coupling to said modifying pour spout and positioned relative to said modifying pour spout so that said measuring vessel starts to dispense fluid from said dispensing mouth when said primary container including said modifying pour spout is rotated from said reference position in a counterclockwise direction through a second arc which is substantially smaller than said first arc, said measuring vessel including a first scale calibrated to measure the contents thereof when said measuring vessel is rotated at least through said first arc, a second scale calibrated to measure the contents of said measuring vessel when said primary container is disposed in said vertical reference position, and a third scale calibrated to remeasure the contents when said primary container is rotated at least through said third arc,

• the method steps of:
• rotating said primary container through at least said first arc in said counterclockwise direction in said vertical plane to pour out a measured amount of fluid from said primary container through said upwardly extended portion into said measuring vessel;
• returning said primary container to said vertical reference position to remeasure the fluid in said measuring vessel;
• removing the closure of said measuring vessel and rotating said primary container through an arc in said counterclockwise direction at least exceeding said second arc but substantially smaller than said first arc for dispensing a measured amount of fluid from said measuring vessel;
• returning said primary vessel to said reference position to remeasure the amount of fluid remaining in said measuring vessel, and
• rotating said primary container through at least said third arc in said clockwise direction in said vertical plane to remeasure the fluid in said measuring vessel and pour back a measured amount of the excess fluid remaining in said measuring vessel into said primary container.