Bursting paper ball makes models in the air . Ingenious invention tested at Ealing . A paper ball rocketed into the air at Ealing , London and burst , forming a gigantic representation of a motor tyre . The ball , inflating automatically after it has burst , is a new form of aerial advertisement invented by a young German and was being tried out for the first time in this country . The ingenious device can be applied to a great variety of subjects . Photo shows , hauling down a paper motor tyre model formed by the new invention during tests at Ealing . 28 May 1936 *** Local Caption ***