Ever wondered what we did before sat navs and mobile phones? Here are the bizarre vintage inventions that never caught on. A series of photographs has revealed the ingenious efforts from the first half of the 20th century that helped people manage the pressures of everyday life. From a manual sat nav to a straw hat portable radio – some have been replaced by smart phones and tablets. The old-school sat nav from 1932 included a paper map dotted with landmarks that automatically rolled as the car drove along.
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| Monopod seats, 1953 |
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| Portable radio in a straw hat, made by an American inventor, 1931 |
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| Pram provided with a radio, including antenna and loudspeaker, to keep the baby quiet, United States, 1921 |
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| Revolver camera, New York, 1938= |
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| 'Ski-sailing', a new sport invented in Austria, demonstrated in St. Moritz, Switzerland, January 1938 |
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| Soup-cooling spoons, 1948 |
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| Sunbathing with a foldable reflector, The Netherlands, 1961 |
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| The chain smoker, ca. 1930s |
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| Wooden bathing suits, supposed to make swimming a lot easier, Hoquiam, Washington, USA, 1929 |
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| A police dog with a radio receiving set on her back, 1939 |
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| Bald-head polishers, 1950 |
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| Blind man hearing light with a new invented apparatus, 1912 |
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| Bulletproof glass, demonstration by the best rifle man of the New York police, 1931 |
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| Clap skate, 1936 |
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| Electrically heated jacket, 1932 |
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| Faxed newspaper, New York, 1938 |
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| German scientist with detective camera, ca. 1910s |
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