A teasmade is a machine for making tea automatically. It was once common in the United Kingdom and some of its former colonies. Teasmades generally include an analogue alarm clock and are designed to be used at the bedside, to ensure tea is ready first thing in the morning. Although crude versions existed in Victorian times, they only became practical with the availability of electric versions in the 1930s. They reached their peak in popularity in the 1960s and 1970s but have since declined to the extent that, in the few places they are sold new, they are a retro novelty item.
The name teasmade is an example of a genericized trademark, introduced by Goblin but now commonly used to refer to any automatic teamaking appliance. It is now a registered trademark belonging to Swan.
Info gleaned from Wikipedia