Trevor Baylis - Wikipedia
https://en.wikipedia.org/wiki/Trevor_Baylis
Jump to Invention - Trevor Graham Baylis CBE (13 May 1937 – 5 March 2018) was an English inventor
best known for the wind-up radio. The radio, instead of relying on
batteries or external electrical source, is powered by the user winding a
crank. This stores energy in a spring which then drives an electrical
generator.
Career · Personal life