What was this early 20th century gadget used for?

Answer Slicing cake

A common kitchen tool in the early 20th century, cake breakers was essential to avoid squashing your most delicate cake creations. Combing hair isn't far off though — in their 1971 obit for the cake breaker's inventor, the New York Times noted that the tool was ". . . currently in use as a comb for Afro-American coiffures."

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