Dick Beals, the voice of Gumby, Speedy Alka-Seltzer, Davey (of Davey and Goliath), and a zillion other characters, has died at the age of 85. You youngsters may not get all those references, but Beals’s voice was a kind of a childhood background-soundtrack to those of us of a certain age. He did over 3,000 cartoons and commercials, apparently…