NEW TENNIS BALL.
DITNXOP MAN'S INVENTION. LONDON, January 20. Mr. A. Tenfold, employed by the Dunlop Rubber Company, has, says the "Weekly Dispatch,'' invented an airtight tennis ball. It has thin guttapercha shells enclosing chemicals, and a few drops of water create a pas. The cover is joined like a pink-pong ball, after which it is coated with rubber and placed in a mould, and heated to 300 dejrrees. This vulcanises the rubber, imparting elasticity and establishing the chemical action generating the gas, thereby producing the inflation pressure. The ball is then plunged in ice-cold water and covered with felt by the usual methods. It is claimed that the invention eliminates the varying ratio of deflation, standardises the bounce, and causes the balls to play consistently, __ , ( r
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Auckland Star, Volume LVI, Issue 29, 4 February 1925, Page 5
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127NEW TENNIS BALL. Auckland Star, Volume LVI, Issue 29, 4 February 1925, Page 5
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