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Then we retired for about fifty yards and took up some shell-holes. I looked round and found all my men had vanished. I was amongst some of the Cams. and Herts. I really did not know what to do. The artillery became more intense and still our shells were dropping short.
A. In locomotive engines the use of cams is inadmissible, and other expedients are employed, of which those contrived by Stephenson and by Cabrey operate on the principle of accomplishing the requisite variations of expansion by altering the throw of the slide valve. Q. What is Stephenson's arrangement?
Further musings were interrupted by the appearance of a shape which approached from round the corner of one of the towers. It cams nearer stealthily, pausing every now and then. Had I evoked, willy-nilly, some phantom of the buried past? It was only the custodian, leading his dog Musolino.
The cam-shaft here carries only single, not double cams, a decided disadvantage: in order to strike the same number of blows per minute it has to make double the number of revolutions. Moreover, by some unhappy mistake, it is too far from its work, and the result is a succession of sharp blows on the tappets, with injury to all the gear.
Her movement, then, is not walking; it is not skating, which it seems to resemble; it is more like that of a person walking with two crutches besides his two legs. The machinery is simple enough: a strong spiral spring, three or four cog-wheels and pinions, a fly to regulate the motion as in a musical box, and the cams before mentioned.
The speed attained by the fastest sewing machines is due more to the reduction and simplification of the movements than to any other improvement. Heavy concessions and reactions have been replaced by direct motions, and cams have been excluded as much as possible. Mr. A.B. Wilson's famous invention of the four motion feeder depended upon both gravity and a reacting spring for two motions.
"What d'you think about it?" said Andrews, turning to the Chink. The Chink shook his head without answering. Andrews went out. When he cams back he found Al and Chrisfield alone in their room. Chrisfield was walking up and down, biting his finger nails. On the wall opposite the window was a square of sunshine reflected from the opposite wall of the Court. "For God's sake beat it, Chris.
This housing is clamped to the upper half of the crank case by means of three studs. The cam-shaft carries eighteen cams, these being the inlet and exhaust cams, and a set of half compression cams which are formed with the exhaust cams and are put into action when required by means of a lever at the forward end of the cam-shaft.
A bracket bolted up to the side of cylinder forms a bearing for one end of the side shaft, and also carries a spindle at its lower end on which the levers oscillate, transmitting the motion imparted to them by the cams to the valves. The main cylinder casting and the bed need no description.
The expert was one of the nicest men you ever saw, and we used to take off cylinder heads, and adjust cams, and spend hours knocking everything to pieces and putting them together again so that I might be prepared for getting on without him. He said he hated to think of that time, and what do you suppose he did?
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