CrosswordMint
Lost Marvels of Inventive History
Explore forgotten inventions that shaped history but faded into obscurity, uncovering ingenious ideas and obsolete technologies.
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Across
  • 1. Inventor linked to early waterproof explosives device
  • 2. One of the earliest attempts at human flight before airplanes
  • 3. Navigational instrument once vital in maritime travel
  • 5. A precursor to fax machines transmitting handwriting
  • 8. A device to produce high-voltage, low-current electricity, once a scientific curiosity
  • 12. Early underwater breathing apparatus before modern scuba gear
Down
  • 4. System once used for mailed messages through pressurized tubes
  • 6. Early blood pressure measuring instrument
  • 7. An early method using light and chemicals for healing
  • 9. An old prison design allowing all inmates to be observed from a central point
  • 10. A forgotten revolving dental chair invention
  • 11. Ancient Greek analog computer for astronomical positions
  • 13. Device for viewing images in 3D, popular in the 19th century
  • 14. Technology used to stabilize ships and aircraft, once novel
  • 15. A Victorian-era single-lens camera design
  • 16. Early steam-powered bicycle invented in the 19th century
  • 17. Obsolete engine combining steam and gas power

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