Today in 1937, US Patent 2094869 A was issued, an invention of Earcy Ballard, for his “Drinking and Tapping Attachment For Beer Cans.” There’s no Abstract, although in the description it includes only this summary:

My invention relates to a drinking and tapping attachment for beer cans, and the objects of my invention are:

First, to provide an attachment to be used 5 in connection with the conventional beer cans which provides a combination means for tapping the can for permitting the flow of the beer and also providing an extended rim: to facilitate drinking from the can;

Second, to provide an attachment of this class which may be readily and quickly attached to and detached from the can;

Third, to provide an attachment of this class which may be sterilized and used over and over again on different cans;

Fourth, to provide an attachment of this class which provides a sufficiently large opening in the can so that the beer will flow readily therefrom;

Fifth, to provide an attachment of this class with a handle in connection therewith to facilitate the handling of the can while drinking therefrom;

Sixth, to provide an attachment of. this class with clip means for clamping it tightly on the can and also provided with extended portions for guiding the attachment while puncturing the can;

Seventh, to provide an attachment of this class with a gasket around the pouring and puncturing means to prevent leakage between the can and the attachment when drinking;