As for the cross-bows they made, they were grand with screws." There were five boys and six girls in the Gordon family. Charlie was the fourth son, and two of his elder brothers were soldiers while he was still quite a little lad.
Then the pumps were worked some more, and other blocks put under, till the wharf was restored to the required level. Great screws such as are used in raising buildings were also employed under wharves sometimes. There were rocks under some wharves, and water was under others.
"A hold-up?" "Oh, thumb screws, you know the same old quick-step to the altar. I hadn't done a thing, I tell you, but it looked as if she thought that our being there was something she could stage a scene on and so I thought you don't know what things have been tried on me before," he broke off to protest at Barry's expression.
By this time she was about seven miles away, and the Lurline, her twin screws beating the water at their utmost speed, and every plate in her trembling under the vibration of her engines, rushed through the water faster than she had ever done since the day she was launched. As far as could be seen, she was holding her own well in what had now become a dead-on stern chase.
They were not among the first to make the change from wood to iron or from paddle-wheels to screws. But they did business honestly and well and always took care of their passengers' safety. The Cunards were Canadians. Sir Hugh Allan was a Scotsman. But he and the line he founded are unchallengeably first in their services to Canada.
At that time William always carried on his person a strange assortment of screws, metal discs, springs, bits of rubber and the like. He pulled them out in showers when he took out his handkerchief; they dripped from him when he stood up. I think he kept them about him for inspiration. William completed It in a frenzy of enthusiasm.
The traces were doubled, and, as an additional precaution, the nave-boxes were stuffed with straw, as much to increase the strength of the wheels as to lessen the jolting, unavoidable on a dark night. Lastly, the fore and hinder parts, connected simply by the axles to the body of the tarantass, were joined one to the other by a crossbar, fixed by means of pins and screws.
A crystal detector consists of: the frame, the crystal, and the wire point. This rod screws into and through a sleeve fixed to a ball that sets between two brass standards and this permits an up and down or a side to side adjustment of the metal point while the pressure of it on the crystal is regulated by the screw.
Back of the tableau gleamed the phosphorescence of the placid sea. "There's thirty seconds to decide. Mr. Kirkenhead, look at your watch." For a seeming eternity there was waiting and bated breath. We could hear the muffled throb of the engines, and the churning of the screws. Then Kirkenhead announced, "Twenty seconds, sir."
While engineers, however, are prepared to admit its advantages so far as greater security from total breakdown is concerned, there is by no means thorough agreement as to whether single or twin screws have the greater propulsive efficiency.