Search Results for: Instruments measuring pressure
. . organs, harmoniums letters patent to john hopkinson, of regent street, in the county of middlesex, pianoforte manufacturer, and john whitelock, of , commercial street, leeds, in the county of york, for the invention of improvements in organs, harmoniums, and other similar keyed wind musical instruments
," to be as follows: the object of the improvements is to give facility in playing upon the keys of organs, harmoniums, and such like keyed wind musical instruments by obtaining two distinct sensible or definite touches to each key, and by the pressure of the secondary touch to give prominence to the...
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