| 摘要 |
Resistance welding apparatus with a compound electrode holder is provided. The apparatus is more effective in resistance welding members of U-shaped cross section than apparatus heretofore known. The compound electrode holder enables its electrode to travel in one arcuate path throughout most of its travel or stroke and to move in a second arcuate path as it approaches the workpiece. The compound electrode holder achieves a large path of travel of its electrode and at the same time accurate alignment of the electrodes and reliable welds are attained.
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