2005 P.Missin - Details

US Patent 2655830

Awarded in 1953 to Anthony Balint of New York, this patent shows a somewhat more complicated harmonica teaching device.

In the patent text, Balint claims:

A further object of the invention is to provide an automatic harmonica instructor which is extremely simple and inexpensive to manufacture.

Compared to the previous examples, this particular invention seems anything but simple:

I am not aware that it was ever commercially produced. Balint was granted another patent (US Patent 2671374, issued in 1954) for quite an interesting idea:

This device consists of a sliding mouthpiece added to the harmonica, which allows the number of open holes to be varied. In "beginner mode", the mouthpiece selects just one hole and the player slides the mouthpiece form left to right to play a single note melody. After the player gains some experience, the mouthpiece can then be adjusted so that two holes are open at any one time, then three, then four and finally all five holes are opened and the player learns to select a single note on his or her own.

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