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Joe's heart began to feel fatigue, and a man's heart normally simply doesn't ever feel tired. It became more and more difficult to see clearly. But he had work to do. Important work. The take-off rockets were solid-fuel jobs, like those which launched the Platform. They were wire-wound steel tubes lined with a very special refractory, with unstable beryllium and fluorine compounds in them.
In any case a wide, gripping wheel is required in front to carry the machine forward and to turn it on reaching the end of the furrow. The wire-wound drum is actuated by a spring which tends to keep it constantly wound up, and when the plough has turned and is heading again towards the cable at the side of the field, this drum automatically winds up the wire.
In like manner, the huge field magnets of a modern dynamo are not whirled round a stationary armature, but the armature is whirled within the legs of the magnet with very great rapidity. The next step was to increase the number of magnets and the number of wire-wound iron cores bobbins.
A second wire is not needed if one terminal at each end is connected with a copper plate sunk in the ground, or with a metal fence, drain-pipe, etc. The electric motor to be treated in this chapter illustrates very prettily the attractive force of a hollow, wire-wound bobbin on a movable core, when the electric current is passed through the wire.
The pinnace gave a little squeak from its siren and sped away down the harbour between the two forts, in which the gunners were standing by the new fourteen-inch wire-wound guns, whose long chases were prevented from drooping after continuous discharge by an ingenious application of the principle of the cantilever bridge, invented by the creator of the Ithuriel.
The horse is still in use and is absolutely free from lameness. Case 8. A two-year-old brown gelding with a wire-wound opening the scapulohumeral joint. This wound was large enough to expose to view the articular portion of the humerus. The same treatment as that given case No. one was instituted and in ninety days the colt was practically well. Case 9.
"Oh, yes, we can do that. The initial cast was what stumped me. But we'll go ahead now." "And you can wind the breech with wire, and braze it on; can't you?" persisted Tom. "Yes, I think so. Are you going to have a wire-wound gun?" "That, in combination with a steel-jacketed one.
Slings lowered the bundles down to waiting trucks which would carry them elsewhere. There were mixing trucks still pouring out their white paste for the lining of the rocket tubes, and their product went up and vanished into the gaping mouths of the giant wire-wound pipes. Presently Joe went into the maze of piers under the Space Platform itself.
The tubes were connected by a set of registering valves. To these, in turn, was fastened a wire-wound rubber hose with a long brass nozzle. Once the valves were turned, the acetylene gas forced out by a pressure of a thousand pounds and united with oxygen as an accelerator would produce a shooting flame that burned metals as if they were sun-dried pulp.
He stabbed the master jato switch. And a monstrous jato rocket, built into each and every one of the pushpots outside, flared chemical fumes in a simultaneous, gigantic thrust. A small wire-wound jato for jet-assisted-take-off will weigh a hundred and forty pounds and deliver a thousand pounds of thrust for fourteen seconds. And that is for rockets using nonpoisonous compounds.
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