| 21. | A railroad fusee was timed to burn for ten minutes and quantities were dropped behind a train to ensure a safe spacing.
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| 22. | Another type of flare is the " fusee ", which burns for 10 60 minutes with a bright red light.
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| 23. | Fusees are also known as " railroad flares " and are commonly used to perform hand signals in rail transport applications.
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| 24. | Gruet of Geneva is widely credited with introducing them in 1664, although the first reference to a fusee chain is around 1540.
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| 25. | The pendulum was a novelty; so were the spiral spring and anchor escapement invented by Robert Hooke, and the fusee chain.
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| 26. | His dam, Fusee made little impact as a racehorse, and was close to being destroyed after her career was ended by injury.
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| 27. | The pendulum clock with an anchor escapement, invented in 1670, was sufficiently independent of drive force so that only a few had fusees.
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| 28. | In the 18th century the original verge escapement, which required a fusee, was gradually replaced in better French watches with the duplex escapement.
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| 29. | Logical One is a reinvention of the chain-and-fusee constant force mechanism, with a snail cam replacing the cone-shaped fusee.
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| 30. | Logical One is a reinvention of the chain-and-fusee constant force mechanism, with a snail cam replacing the cone-shaped fusee.
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