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B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
B23K9/00—Arc welding or cutting
B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
B23K9/1336—Driving means
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FR809459D1935-11-231935-11-23Perfectionnement aux dispositifs employés pour la soudure à l'arc et procédés analogues
ExpiredFR809459A
(fr)
Perfectionnement aux dispositifs de guidages externe et latéral d'une pellicule pendant son passage dans le couloir de film d'appareils cinématographiques de projection