Variably proportional mixing device

A method for automatically mixing a first and a second fluid in various predetermined ratios without measuring, the first fluid being stored in a first container of the type having a screw-cap opening, said method comprising:

• providing a device for automatically mixing said fluids, said device comprising:
• means for attaching said device to said first container;
• a second container for receiving and retaining said second fluid;
• means for selecting one of said predetermined ratios;
• means for controlling the flow of fluid from said second container such that the ratio of the flow of fluid from said first container to the flow of fluid from said second container corresponds to said selected predetermined ratio;
• and means for mixing the fluids from said first and second containers pouring said first fluid into said first container;
• pouring said second fluid into said second container;
• attaching said device to said first container;
• selecting a predetermined ratio;
• limiting the flow of said second fluid from said second container such that the ratio of fluid from said first container to fluid from said second container corresponds to said selected predetermined ratio;
• introducing said flow of fluid from said first container to said limited flow of fluid from said second container;
• and mixing said fluid from said first container with said fluid from said second container.

A mixing apparatus for mixing and dispensing two fluids in an operator selectable ratio, said apparatus comprising

• a second fluid reservoir for receiving, storing and dispensing the second fluid;
• a screw cap for coupling said apparatus to a conventional dispenser container, said conventional container capable of receiving, storing and dispensing a first fluid;
• a mixing housing comprising an oil spool plunger having multiple seals and oil ports;
• said plunger selectably operable into either a flow state or closed state;
• said mixing housing in fluid communication with both first and second fluid reservoirs when said plunger is in an open state;
• a dispensing nozzle in fluid communication with said mixing housing;
• wherein one of said oil ports is selected to provide an oil flow to said mixing housing;
• and said oil port provides a predetermined flow of oil so that a predetermined mixture of each fluid is dispensed from said nozzle.