| 摘要 |
<p>Assembly for the semi- or fully-automatic welding of all metals, by connecting a d.c. motor between the +ve and -ve terminals of a welding generator, for pushing or pulling the metal into the fusion bath, whereby the series motor has a potentiometer connected in parallel with the inductors to vary to the feed speed of the metal, and this assembly is connected across the +ve and -ve terminals of a generator with a constant voltage cell.</p> |
