Today in 1967, US Patent 3321861 A was issued, an invention of Charles G. Tate Jr., for his “Beer Tap Handle.” There’s no Abstract, though it’s described this way in the application:

Because of competition most beer companies provide bars with fancy tap handles carrying the name of the particular brew. These handles are changed frequently to attract attention and are made in all materials in numerous shapes and sizes. Attempts have been made to provide such handles with electrically operated devices such as lights and other moving parts. However, most communities are provided with safety regulations which prohibit the use of electric lines to beer tap handles be cause of the danger involved, the bartender normally having wet hands and handling a wet product. Battery power has also been suggested for such purpose but these are expensive because the batteries must be frequently replaced. Furthermore, a busy bartender will often forget to turn the switch and turn on the device when he comes in in the morning. The present invention is designed to provide an electrically powered beer tap handle utilizing rechargeable batteries. The device of the present invention operates with a novel switching arrangement so that the batteries are being charged only overnight when the de vice is not in use. Also, removal of the charging device turns on the beer tap handle.