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patent log

noun, Nautical
1.
any of various devices for determining the speed of a ship by means of a vaned rotor streamed at the end of a log line upon which it exerts a torsion transmitted to a registering device on board.
Also called screw log.
Origin of patent log
1875-1880
1875-80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for patent log
Historical Examples
  • "Well, come and see me set the patent log," said Captain Whitby.

  • The man answered, and Jenkins departed with the boat's patent log.

    The Wreck of the Titan Morgan Robertson
  • He was sailing by compass; the patent log, trailing behind on its long cord, maintained a constant, jerking register on its dial.

    Wild Oranges Joseph Hergesheimer
  • See that the patent log and sounding machine are in good order.

    Lectures in Navigation Ernest Gallaudet Draper
  • She was loaded well down, yet an hour after the patent log had been put overboard it recorded a run of seventeen knots.

  • The patent log on the taffrail periodically rang a single tinkling stroke for every mile traversed on an errand of faith.

    Lord Jim Joseph Conrad
  • The dial of the patent log tinkled periodically in the dark at the end of the ship.

    End of the Tether Joseph Conrad
  • The average speed of the seven hours' steaming, as measured by patent log, was 19.28 knots.

  • The ocean was all right, and so was the patent log; as for speed, one saw it with his own eyes.

  • Comparing the distance run by observation and by patent log, there was a difference of sixteen miles and a third.

    The Story of the Atlantic Telegraph Henry M. (Henry Martyn) Field
British Dictionary definitions for patent log

patent log

noun
1.
(nautical) any of several mechanical devices for measuring the speed of a vessel and the distance travelled, consisting typically of a trailing rotor that registers its rotations on a meter Compare chip log
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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8
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