After familiarizing himself with the mechanics of washing machines, Toshio designed a prototype in January of 1953. Before starting mass production, he visited the president of Sumitomo Bank (presently Sumitomo Mitsui Banking Corporation) to ask for financial assistance. The president, however, advised Toshio to reconsider the production of round-type, agitation-style machines. The president told Toshio that he had a square-type, jet-style machine made in England, which cleaned clothes better than the round-type and didn't damage them. As Toshio had not even considered square-type machines, he was very embarrassed by his lack of expertise in this area. Toshio immediately went to work on researching square-type machines. He discovered that the president of Sumitomo was right. As the square-type used a rotating pulsator to generate a jet stream rather than an inverted agitator, it not only caused less damage to clothes but reduced washing time and took up less space. And it could be made at a much cheaper price because of its simple structure. Clearly the best choice, Toshio changed his production plans to accommodate the square-type machine. While this would mean a loss of time and money, Toshio knew from experience that a setback in the prototyping phase was easier to handle than trying to correct a mistake after the start of mass production.