Equinox

Among the king-sized jobs in industry, there was a shifting of royal robes last week:

P: Walter S. Mack Jr., who was eased upstairs to the chairmanship of Pepsi-Cola Co. only six months ago, and who had hoped to get the G.O.P. nomination for mayor of New York, decided that there was too little left for him to do around Pepsi. He resigned to "conquer new fields." Pepsi will continue to be run by Alfred N. Steele, 49, a onetime Coca-Cola vice president who succeeded Mack in the presidency.

P: Roly-poly Maurice Newlin Trainer, 61, first vice president of American Brake Shoe Co., was elected president to succeed William B. Given Jr., 62, who moves to the chairmanship. Trainer, a University of Pennsylvania graduate (electrical engineering) and onetime, streetcar motorman, joined Brake Shoe in 1916 as an inspector.

P: Packard's famed Executive Vice President J. G. Vincent, 70, who designed the first U.S. twelve-cylinder auto engine and was co-designer of World War I's Liberty engine, will retire at year's end. To replace Vincent, directors picked LeRoy Spencer, 57, general manager of Packard's California distributing company and an auto salesman since 1912. Spencer was already regarded as a likely choice for president when & if Hugh Ferry steps out (TIME, Aug. 28).

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