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Updated: June 16, 2025
Before 1876 the Gatling gun, dynamite, and the barbed-wire fence were introduced; the compressed-air rock drill, the typewriter, the Westinghouse air brake, the Janney car coupler, the cable-car system, the self-binding reaper and harvester, the cash carrier for stores, water gas, and the tin-can-making machine were invented, and Brush gave the world the first successful electric light.
In this chapter we shall go only into the apparatus used for two simple receiving sets, both of which have a crystal detector. The first set includes a double-slide tuning coil and the second set employs a loose-coupled tuning coil, or loose coupler, as it is called for short. For either set you can use a pair of 2,000- or 3,000-ohm head phones. The Crystal Detector.
A small alternator of 200 watts and 100 volts is coupled direct to the aeroplane motor, a new clutch coupler being employed for this purpose. By means of a small transformer the voltage is raised to 30,000 volts, at which the condenser is charged. In this instance the musical spark method is employed.
A better scheme is to use a loose coupler formed of two or three honeycomb or other compact coils, while a variocoupler or a variometer or two will produce the maximum regenerative action. The Simplest Type of Regenerative Receiving Set. With Loose Coupled Tuning Coil.
He might go, he thought, the following spring to Siberia himself, perhaps to stay this man that feared the wind he had had a good offer. The cap was a present. The two men went out and she was left alone. A flagman, hat in hand, passed through the car. The shock of the engine coupler striking the buffer hardly disturbed her reverie; for her the night meant too much.
He was ambitious to become a great engineer, and was always tinkering at some kind of a machine. He used to joke with me about becoming a great inventor, and after we were married he did try his hand at a patent coupler and a back-firing device for a gas engine. He was just like you, my boy, always dreaming and seeing things in the out-of-doors.
These considerations should at least suffice to demonstrate the entire impracticability of Mr. Galton's two suggestions. Moreover, this idea of picking out high-scale individuals in any particular quality or group of qualities and breeding them, is not the way of nature at all. Nature is not a breeder; she is a reckless coupler and she slays.
Then he would wait a few minutes, watching the whirled lanterns, deafened with the clang of the bells, giddy with the vision of the sliding cars, his brake-pump panting forty to the minute, his front coupler lying sideways on his cow-catcher, like a tired dog's tongue in his mouth, and the whole of him covered with half-burnt coal-dust.
He leaned over the binnacle, with the cuff of his watch coat wiping away the moisture on the glass, and studied the instrument carefully. "I don't trust the danged thing," he muttered. "Guess I'll haul her off a coupler points an' try the whistle again." He did. Still no echo.
With Three Coil Loose Coupler. To construct a really good regenerative set you must use a loose coupled tuner that has three coils, namely a primary, a secondary and a tickler coil.
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