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Updated: May 25, 2025
Extending immediately below the camshaft is another vertical shaft, driven by bevel gears from the crank-shaft, and terminating in a worm which drives the multiple piston oil pumps. The cylinders are made from steel forgings, as are the valve chamber elbows, which are machined all over and welded together.
They were cut in the printer's office. Lastly, on holding them to the light, I found they had not been machined upon the plan now adopted by all newspapers; but worked by hand. In one word forgeries!" "Oh," said Helen, "to think I should have handled forgeries, and shown them to you for real. Ah!
The complete engine has fourteen cylinders, of forged steel machined all over, and so secured to the crank case that any one can be removed without parting the crank case. The water-jackets are of spun copper, brazed on to the cylinder, and corrugated so as to admit of free expansion; the water is circulated by means of a centrifugal pump.
Whitehead torpedoes, be it known, are mechanical fish of machined steel, self-propelling and self-steering, actuated by a small air engine, and carrying in their "war heads" a charge of over two hundred pounds of guncotton, and in their blunt noses a detonating cap to explode it on contact. At Forsythe's word, Kelly turned a lever on the tube, and the contained torpedo dived gently overboard.
The pistons are of cast-iron, each fitted with three rings, and the connecting rods are of high grade steel, machined all over and fitted with bushes of phosphor bronze; these rods are connected to a central collar, carried on the crank pin by two ball-bearings.
Now, they were not only to make the steel, but they were to forge the ingots into rough casts; these casts were then to be carried to the new munition works, there to be machined, drilled, polished, provided with fuses, which "Spencer's" were also to make, and shipped abroad. The question of speeding production had been faced and met.
They were doing with the automobile what they had done with clocks and watches and rifles, they had standardised and machined wholesale, while the British were still making the things one by one.
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