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Updated: April 30, 2025
Through the abolition of the principal causes of excessive vibration which renders dangerous the enlargement of marine reciprocating engines beyond a certain size the final limit of possible speed has been indefinitely extended.
The air was all tremulous with the hum of the rapidly revolving dynamos, the thud of the reciprocating machinery, and the grinding of the badly lubricated shafting. Piers Minor knew that he was horribly afraid, but for very shame he could not hold back. Together they stole a little way within the vaulted entrance and listened again. Nothing but the roar of the machinery.
'It's the worst of having to do with women, said the Jew, replacing his club; 'but they're clever, and we can't get on, in our line, without 'em. Charley, show Oliver to bed. 'I suppose he'd better not wear his best clothes tomorrow, Fagin, had he? inquired Charley Bates. 'Certainly not, replied the Jew, reciprocating the grin with which Charley put the question.
The Rapier was an old destroyer, one of the 370-ton "thirty-knotters" completed in about 1901. She burnt coal and was driven by reciprocating engines, instead of using oil fuel and being propelled by new-fangled turbines, while 23 to 24 knots were all she could be relied upon to travel in the best of weather.
With the ordinary reciprocating type of marine steam machinery it would be impossible to place, in a steamer of moderate tonnage, engines of a size suitable to enable it to attain a very high rate of speed, because the strain and vibration of the gigantic steel arms, pulling and pushing the huge cranks to turn the shafting, would knock the hull to pieces in a very short time.
The little Arrow is a screw-driven vessel, and her reciprocating engines that is, engines operated by the pulling and pushing power of the steam-driven pistons in cylinders developed the power of 4,000 horses, equal to 32,000 men, when making her record-breaking run.
Wace's principles, both ought to call themselves infidels, because each applies the term to the other. Now I am afraid that all the Mahommedan world would agree in reciprocating that appellation to Dr. Wace himself. I once visited the Hazar Mosque, the great University of Mahommedanism, in Cairo, in ignorance of the fact that I was unprovided with proper authority.
Again thanking you for so marked a compliment, and reciprocating the kind wishes for the future, I am, with profound respect, your friend and servant, W. T. SHERMAN, General. This I construe as the end of my military career.
Captain Cuttle cordially reciprocating the warmth of Mr Toots's farewell, locked the door behind him, and shaking his head with the same remarkable expression of pity and tenderness as he had regarded him with before, went up to see if Florence wanted him. There was an entire change in the Captain's face as he went upstairs.
But in reality our great length of time is offset by a great number of elements to consider, and a more profound effect of long continued teaching or molding of our environment. For years engineers have concentrated energies on the steam-engine of the reciprocating type.
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