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Improvement in Piano-Forte Actions.

Description: Patent for a new piano forte design which "consists in certain novel details of construction, arrangement, and combination of the key-lever and its fulcrum and rest, a receiving-lever, a transmitting-eccentric, a secondary hammer, a principal hammer and its rest, and a damper-action and its connections, whereby greater simplicity and efficiency are obtained" (lines 10-17) including illustrations.
Date: May 27, 1879
Creator: Roedern, George O. V.
Partner: UNT Libraries Government Documents Department

Piano-Action.

Description: Patent for a new and useful piano-action in which the so-called hammers is "pivotally connecting the hammers to the rail by a specific means." (Lines 11-12) Illustration is included.
Date: June 30, 1891
Creator: Norcross, Levi W.
Partner: UNT Libraries Government Documents Department
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