Foam rubber
In 1929, foam rubber was developed at the Dunlop Latex Development Laboratories in Birmingham, England. British scientist E.A. (Edward Arthur) Murphy (1897-1986) whipped up the first batch in 1929, using an ordinary kitchen mixer and a steam oven to froth and vulcanize natural latex rubber. Marketed as “Dunlopillo”, within five years it was everywhere, on motorcycle seats, cinema seats, on London bus seats, Shakespeare Memorial Theatre seats, eventually in mattresses, and even used to make a special seat for Donald Campbell’s water speed record-breaking craft, the Bluebird (1955). After tires, foam rubber became the second largest use of rubber hydrocarbons.