1920s
1928 Ethelred Willson's Improved Automatic Tea Maker
Ethelred Alfred Willson applied for a patent for ‘Improvements in Automatic Means for Heating Water, Making Tea and the Like’ on 1st Oct 1928, and it was published on 1st Jan 1930. 1. 1 Apparatus controlled by clock or other timing mechanism for use in heating liquid wherein the supply