Engineers and their triumphs: the story of the locomotive, the steamship, bridge building, tunnel makingHolmes, F. M. (Frederic Morell)
History
Engineers and their triumphs: the story of the locomotive, the steamship, bridge building, tunnel making
Holmes, F. M. (Frederic Morell)
Engineering; Engineers
When at length she was launched, the directors’ minds misgave them
as to an Australian trip, and they determined to cross the Atlantic
instead, for a trial voyage. She started on the 8th of September,
1859, but alas! when off Hastings some steam pipes burst. Several
persons were killed and wounded, and the voyage ended at Portland.
Next year she tried again and crossed in eleven days, after which she
made several voyages with success—on one occasion conveying soldiers to
Canada. Unfortunately for the owners, however, she did not pay.
Then in 1865 she began to be engaged in submarine telegraph work, by
which she will most likely be best remembered, and two years later she
was chartered to convey passengers from America to Havre for the French
Exhibition, but this scheme failed.
Then for some years from 1869 she was successfully engaged in
cable-laying, in the Red Sea, the Atlantic, and the Mediterranean,
etc., after which she came down to be a coal hulk in 1884, stationed at
Gibraltar.
At length she was sold for £26,200 at London, by auction, and was on
view in the Thames, and also in the Mersey. At this latter river her
huge sides were used as an advertising “board” for a Liverpool business
house. Again in November, 1888, she was sold by auction, this time for
breaking up, and it is said that the total proceeds of the sale which
lasted five days was £58,000, more than double what she had previously
brought!
“A ship before her time,” says some one, thinking of the huge vessels
of the last decade of the nineteenth century. That is true, but the
immense space required for coal, and her low-pressure engines, had
also something to do with her comparative failure. The problem which
the _Great Eastern_ failed to solve has been met in other ways—viz.,
by the use of high-pressure steam and compound, triple-expansion and
even quadruple-expansion engines. That is, the steam, working at 150 or
160 lbs. pressure, instead of the 25 lbs. of the _Great Eastern_, is
passed through two, three, and even four cylinders respectively, and
the economy in coal consumption is astounding. Thus the use of triple
expansion engines has brought the saving in coal down from 4 lbs. per
indicated horse-power to less than 1½ lbs.
There have been many other improvements also, such as the use of steel
instead of iron, the parts being thus stronger and yet lighter; the
circular tubular boiler enabling high-pressure steam to be economically
produced and maintained; the use of surface condensers, by which the
exhaust steam is quickly reduced to water and returned to a “hot well”
ready for the boilers, to be speedily again raised to high pressure
steam; and a forced draught by which the furnaces are made to roar
furiously and heat the water in the boilers speedily.
[Illustration: THE “GREAT EASTERN.”]
Public-domain text, read in full here on John Shaqi.
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