CrosswordMint
Obscure Genius of 19th Century Innovators
Challenging puzzle for experienced crossword solvers
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Across
  • 1. Term describing light transmission, key in 19th-century optics innovation by unknown inventors
  • 2. Technique for measuring expansion, pioneered by an underappreciated metallurgist
  • 3. Inventor credited with enhancements in telegraphy but largely bypassed by history
  • 4. Inventor tied to nautical navigation aids, eclipsed by contemporaries' fame
  • 5. Inventor who advanced early photographic calotypes with chemical ingenuity
  • 6. An obscure device for recording star positions, 19th-century astronomical apparatus
  • 8. Known for electromagnetism but some lesser-known mechanical inventions remain obscure
  • 9. Type of lens patented for image projection in obscure 19th-century optics patents
  • 13. Inventor of atmospheric engines, overshadowed in early steam technology development
  • 14. His valve gear revolutionized steam engines but overshadowed by later innovators
Down
  • 7. Electrostatic device for charge transfer, precursor of modern capacitors by forgotten authors
  • 10. Evoking technical smoke discharging devices, but originally a 19th-century invention in signals
  • 11. Early stabilization device predating gyroscope patents, a forgotten mechanical wonder
  • 12. An early printing method related to lithography, patented by a barely remembered pioneer
  • 15. Though often remembered, his lesser-known 19th-century patents were groundbreaking in electromagnetism
  • 16. Measurement of vacuum pressures, a specialty developed in obscure 19th-century laboratories
  • 17. Chemical invented for lighting before widespread use of kerosene, forgotten inventor’s fuel

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