Crane developed a line of hard mints, but didn’t have the space or machinery to make them. He contracted with a pill manufacturer to press the mints into shape. The pill manufacturer, whose machinery was malfunctioning, found that the pressing process worked much better when the mints were stamped with a hole in the middle.
Crane called the new candy "Crane’s Peppermint Life Savers," because they looked like miniature throwable life preservers. The ring-shaped devices were just beginning to come into use after the Titanic disaster.