The Fabulous World of Jules Verne (1958)

"Fantastic Pedal Blimps Fly The Skies! - Four-Footed Machines In Incredible Sea Battle!"

As the world progresses into the industrial age, a professor studying the "nature of pure matter" is spirited away by a would-be dictator and connived into building a super-bomb, as a young reporter and a girl rescued from the sea attempt to warn him of their mutual kidnapper's intentions to dominate the world with a new and more-deadly-yet weapon.