. A new thermo-electric fluid-meter and hot-wire anemometer. disoharge epark. This was, ofoourae, only a feeble welding of the metals fortemporary oonneotions. But later on, while work-ing with aluminum wire, the demand for a weldingmethod and a oareful theoretical consideration ofwhat happened in the early tests with electrolyticcondensers made it appear worth while to try outthe method of welding on a larger scale with a con-denser discharge. Prom the first, the same principle of asimultaneous condenser discharge and percussiveengagement has been used, but during the tests anddevelopment of
. A new thermo-electric fluid-meter and hot-wire anemometer. disoharge epark. This was, ofoourae, only a feeble welding of the metals fortemporary oonneotions. But later on, while work-ing with aluminum wire, the demand for a weldingmethod and a oareful theoretical consideration ofwhat happened in the early tests with electrolyticcondensers made it appear worth while to try outthe method of welding on a larger scale with a con-denser discharge. Prom the first, the same principle of asimultaneous condenser discharge and percussiveengagement has been used, but during the tests anddevelopment of welding tools it was found that thebest results depend upon the values of severalvariables, such as the condenser capacitance, thevelocity and force of impact, the voltage, and theresistance and inductance in the circuit. The first apparatus consisted of twohinged arms with wire grips ir their ends. Wiresplaced in the grips were connected to the terminalsof a charged electrolytic condenser. These arms. __^ /^^r^A^ P/9 Pa<S£ 2^^, S£:i^r£~/i/./c//.. r/GC//?e ^7 J p/6(//?£ sa.
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Keywords: ., bookcentury1900, bookdecade1920, bookidnewthermoele, bookyear1920
