Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 309
thegates. Besides the ordinary gates, there will be provided for each lockat Eastham an outer pair of storm-gates that will be closed only in roughweather. These gates will shut from the outside against the lock sills,and, by resisting the force of wind and waves, will protect the ordinarytidal… … Fig. 137.—Manchester Ship Canal Works^ Rn7icorn. to the laurel family. It is a very heavy and close grained wood, thestrength and endurance of which have been proved many years ago by itsuse in ship-building, etc., and some of the logs imported for the canal areremarkably fine specimens, being 22…
Inventions
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