referring initially to fig1 - 6 , where like numerals indicate like and corresponding elements , a dual - chamber drink container 1 includes a container 3 . container 3 is generally cylindrical in shape , with two or more compartments 5 , 7 ( fig4 ) divided by a vertical partition 9 . vertical partition 9 is irremovably coupled to the container and substantially the same height as the container , such that a circular upper container perimeter 11 is spanned by and in the same plane as a linear upper partition edge 13 . a threaded neck 15 is located on the outside of the container 3 proximate to the upper container perimeter 11 . a lid member 17 includes a downwardly - facing socket 19 , an upwardly - facing partition indicator 21 , a gasket member 23 , and two or more access openings 25 , 27 . lid member 17 is positioned vertically over the upper container perimeter 11 of the container 3 , and is generally circular with a diameter slightly larger than that of the container 3 . the first opening 25 and second opening 27 are positioned over the first and second compartments 5 , 7 , respectively , of the container 3 . socket 19 includes a center section 29 which engages the upper partition edge 13 , as best shown in fig6 , only when the lid member 17 is properly registered with container 3 . partition indicator 31 is parallel to and vertically located above center section 29 when lid member 17 is properly registered . gasket member 23 is shaped as a centrally - bisected circle , as best shown in fig4 , to closely interfit with socket 19 and center section 29 on an upper side and with upper container perimeter 11 and upper partition edge 13 on a lower side . the “ sandwich ” formed between the socket 19 , gasket member 23 , perimeter 11 and partition edge 13 enables a liquid - tight seal between the lid member 5 and container 3 . close interfitting between socket 19 , perimeter 11 and partition 13 , in combination with high clamping forces imparted by a locking ring 33 , may enable gasket member 23 to be optional , with adequate sealing between the socket , container perimeter and partition edge enabled without it . the threaded locking ring 33 is adapted to removably secure lid member 17 to threaded neck 15 when partition indicator 21 is aligned with upper partition edge 13 , indicating that center section 29 has properly engaged upper partition edge 13 . in operation , when assembling the dual - chamber drink container 1 the user places the gasket member 23 and lid member 17 over the upper container perimeter 11 and upper partition edge 13 . in the current embodiment the lid member 17 includes a socket 19 to help facilitate a liquid - tight seal between the lid member 17 , upper partition edge 13 and upper container perimeter 11 . the threaded locking ring 31 is then placed over the lid 17 and threaded neck 15 and removably screwed into place in a use configuration as shown in fig1 - 3 and 6 . the first opening 25 and second opening 27 are positioned over the first and second compartments 5 , 7 , respectively . in the current embodiment each opening may facilitate an additional feature to aid in beverage consumption , such as a straw 35 as shown in fig1 - 4 , or alternatively a valve , spigot or cap for sealing each opening 25 , 27 . the partition indicator 21 on an upper surface 37 of the lid member 17 aids the user in aligning the lid and gasket assembly in the proper position over the vertical partition 9 . in this embodiment the partition indicator 21 is a depression which bisects the upper surface 37 of the lid member 17 . though it is intended to fully describe the invention as set forth here , it is reasonable to assume that one skilled in the art could adjust , modify , subtract or adapt certain aspects of this dual - chamber drink container 1 device without departing from its original scope . the implementation of individual or combined improvements disclosed here as part of another dual - chamber drink container device is possible . for example , adding additional compartments to the dual - chamber drink container 1 device would be well within the bounds of what has been revealed herein . other possible configurations of the dual - chamber drink container 1 may include a vertical partition 9 containing an insulating material to lessen thermal conductivity between compartments , or a container 1 with more than two segregated chambers 5 , 7 . the number of openings in the lid 17 and the configuration of the vertical partition 9 would need to be modified to accommodate additional compartments , as well as the shape of the gasket 3 to ensure a liquid - tight seal in the use configuration . various known configurations could be used to partition two or more liquids within a single container , or other features could be added to the lid openings such as spigots , valves or extruded caps . again , these mechanisms are not the subject matter of this disclosure . the gist of this improved dual - chamber drink container is that in addition to an easy to use liquid - tight lid , the configuration is such that the openings for each chamber will be consistently positioned in a fixed configuration that ensures accessibility to each compartment while maintaining a liquid - tight seal . the recommended materials will likely be , but are not limited to rigid plastic and synthetic rubbers . while the invention has been illustrated and described as embodied , it is not intended to be limited to the details shown , since it will be understood that various omissions , modifications , substitutions and changes in the forms and details of the device illustrated in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention . without further analysis , the foregoing will so fully reveal the gist of the present invention that others can , by applying current knowledge , readily adapt it for various applications without omitting features that , from the standpoint of prior art , fairly constitute essential characteristics of the generic or specific aspects of this invention .