any of various devices for determining the speed of a ship by means of a vaned rotor streamed at the end of a logline upon which it exerts a torsion transmitted to a registering device on board.
- Also called screw log [skroo-lawg, log]. /ˈskru ˌlɔg, ˌlɒg/.
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How to use patent log in a sentence
The dial of the patent log tinkled periodically in the dark at the end of the ship.End of the Tether | Joseph Conrad
The ocean was all right, and so was the patent log; as for speed, one saw it with his own eyes.The Cruise of the Snark | Jack London
"Well, come and see me set the patent log," said Captain Whitby.Harper's Round Table, June 4, 1895 | Various
And after consultation with a signal boy, who came aft to read the patent log, we found that we were heading for that island.A Gunner Aboard the "Yankee" | Russell Doubleday
The mechanism of the patent log hummed and clicked more obtrusively.Alias The Lone Wolf | Louis Joseph Vance
British Dictionary definitions for patent log
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