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patent log
[ pat-nt lawg, log ]
noun
, Nautical.
- 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.
patent log
noun
- 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
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Word History and Origins
Origin of patent log1
First recorded in 1875–80
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Example Sentences
The dial of the patent log tinkled periodically in the dark at the end of the ship.
From Project Gutenberg
The ocean was all right, and so was the patent log; as for speed, one saw it with his own eyes.
From Project Gutenberg
"Well, come and see me set the patent log," said Captain Whitby.
From Project Gutenberg
And after consultation with a signal boy, who came aft to read the patent log, we found that we were heading for that island.
From Project Gutenberg
The mechanism of the patent log hummed and clicked more obtrusively.
From Project Gutenberg
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