Mason & Hamlin Co. (Boston, Mass.) · The Company · leaf 12
As represented in cut 1, the bellows or receiver has just reached the point of contraction when it begins its automatic workof opening the swell. In cut 2, the bellows is fully contracted, and the swell is fully opened. The operation will be perceived 13 upon raising the cover of the Instrument and…
Organ (Musical instrument)
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