Abstract :
G. H. Fett (University of Illinois, Urbana, Ill.): The authors have contributed a complete and unique solution to the problem of the design of the feeder system for resistance-welding equipment. The method takes into account the fact that there is a probability of a number of welding machines on the same feeder being in operation at the same time. One basis for the design of the feeder is that the probability that the number in operation at any one time in excess of the number for which the feeder is designed is equal to the probable number of poor welds which are permissible. This leads to what may be thought of as the most economical design of the feeder system, since the overdesign to accommodate all the machines simultaneously is avoided. In addition the authors have shown how to check the design for thermal and mechanical effects.