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Accordion mechanism

Patent drawing of an accordion-like automatic musical instrument showing a folding bellows chamber with a reed-board, a series of gears and ratchet wheels on a shaft, and below it a separate diagram of a long perforated valve-sheet strip marked with note letters and numbered apertures.

IMPROVEMENT IN AUTOMATIC MUSICAL INSTRUMENTSHenry B. Horton · October 30, 1877

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