UNT Libraries Government Documents Department - 4 Matching Results

Search Results

Results: 1 - 4

Piano-Action

Description: Patent for a new piano-action that will get rid of unwanted sounds and reduce the amount of cushioning needed. Other goals are to ensure that strings cannot not be prevented from vibrating, and that a certain sound can be made.
Date: March 17, 1914
Creator: Blessing, John T.
Item Type: Refine your search to only Patent

Pumping-Head.

Description: Patent for a pumping head involving two piston rods that are rigid and, if broken, can be replaced without harming the rest of the machine. The patent includes instructions and illustrations.
Date: November 17, 1914
Creator: Boicourt, John L.
Item Type: Refine your search to only Patent
Back to Top of Screen