|
Date |
Patent Name |
Improvement |
Inventor |
| 1875 |
Improvement in Piano Attachments |
Sostenuto mechanism adapted for grands. |
Albert Steinway |
| 1875 |
Improvement in Piano Attachments |
Sostenuto mechanism adapted for uprights. |
Albert Steinway |
| 1875 |
Improvement in Piano Attachments |
Sostenuto mechanism adapted for square grands. |
Albert Steinway |
| 1875 |
Design for Metal Frame in Pianos |
Plate Design. |
C.F.Theodor Steinway |
| 1875 |
Improvement in Grand Piano-Forte Actions |
Adjustable capstan. |
C.F.Theodor Steinway |
| 1875 |
Improvement in Agraffes for Piano- Fortes |
Capo tasto agraffe. |
C.F.Theodor Steinway |
| 1875 |
Improvement in Metal Frames for Piano-Fortes |
Improvement of cast-iron frame. |
C.F.Theodor Steinway |
| 1876 |
Improvement in Piano-Fortes |
Nose bolts are supplied with removable nuts. |
C.F.Theodor Steinway |
| 1876 |
Improvement in Piano Sound-Boards |
The addition of a bind bar for the soundboard. |
C.F.Theodor Steinway |
| 1877 |
Improvement in Piano-Forte Attachments |
Work on creating a quieter keyboard |
Albert Steinway |
| 1877 |
Improvement in Piano-Action Frames |
Reissue of earlier patents. |
C.F. Theodor Steinway |
| 1878 |
Improvement in Grand Piano-Fortes |
Improvement of case. |
C.F. Theodor Steinway |
| 1878 |
Improvement in Piano-Forte Actions |
Improvement of keys for uprights. |
C.F. Theodor Steinway |
| 1878 |
Improvement in Piano-Fortes |
Improvement of capo tasto bar. |
C.F. Theodor Steinway |
| 1878 |
Improvement in Piano-Forte Agraffes |
Improvements to agraffes. |
C.F. Theodor Steinway |
| 1878 |
Improvement in Sounding-Boards for Piano-Fortes |
Soundboard improvements. |
C.F. Theodor Steinway |
| 1878 |
Improvement in Capodastro-Frames for Piano-Fortes |
Capo tasto bar for uprights. |
C.F. Theodor Steinway |
| 1878 |
Design for a Piano |
Grand case design. |
C.F. Theodor Steinway |
| 1878 |
Design for an Upright Piano-Forte Case |
Upright case design. |
C.F. Theodor Steinway |
| 1878 |
Improvement in Piano-Forte Repeating- Actions |
Improvement on repetititon in uprights. |
C.F. Theodor Steinway |
| 1879 |
Innovations in the Construction of Pianofortes, Especially of Grand Pianos |
Grand piano case design. |
C.F. Theodor Steinway |
| 1879 |
Innovations in Upright Pianofortes |
Improvements on capto tasto bar. |
C.F. Theodor Steinway |
| 1879 |
Improvement in Devices for Leveling the Key-Frames of Piano-Fortes |
keyframe regulating device. |
C.F. Theodor Steinway |
| 1879 |
Improvement in Devices for Adjusting Piano-Forte-Action Frames |
Precision change for strike-points of hammers. |
C.F. Theodor Steinway |
| 1879 |
Improvement in Piano-Action Frames |
Reissue of earlier patents. |
C.F. Theodor Steinway |
| 1879 |
Improvement in Piano-Forte Actions |
Reissue of earlier patent. |
C.F. Theodor Steinway |
| 1880 |
Piano-Action and Action-Frame |
Improvement of action for uprights. |
C.F. Theodor Steinway |
| 1880 |
Screw-Clamp for Wood-Bending Machines |
Innovation for wood bending. |
C.F. Theodor Steinway |
| 1880 |
Design for a Piano-Forte Case |
Case design for upright. |
C.F. Theodor Steinway |
| 1880 |
Upright Piano-Forte |
Innovations in case and cast-iron plate. |
C.F. Theodor Steinway |
| 1880 |
Piano-Forte Hammer |
Hammer innovation. |
C.F. Theodor Steinway |
| 1880 |
Piano-Forte Hammer |
Hammer innovation. |
C.F. Theodor Steinway |
| 1880 |
Key-Frame Bed for Piano-Fortes |
Innovations on keyframe. |
C.F. Theodor Steinway |
| 1880 |
Piano Sounding-Board Bridge |
Innovations on soundboard construction. |
C.F. Theodor Steinway |
| 1880 |
Piano-Forte |
Reissue of earlier patent. |
C.F. Theodor Steinway |
| 1883 |
Piano-Action |
Innovation in key placement. |
C.F. Theodor Steinway |
| 1885 |
Piano-Frame |
Addition of trebel bell for grands. |
C.F. Theodor Steinway |
| 1885 |
Piano-Pedal |
Innovation for silent pedal action. |
C.F. Theodor Steinway |
| 1885 |
Piano-Frame |
Innovation in case and cupola plate construction. |
C.F. Theodor Steinway |
| 1885 |
Panel for Upright Pianos |
Desk Panel for uprights. |
C.F. Theodor Steinway |
| 1888 |
Music Rack Attachment for Upright Pianos |
Innovation for attaching music rack. |
Henry L. Ziegler |
| 1893 |
String-Frame for Upright Pianos |
Improvement of frame. |
Henry L. Ziegler |
| 1893 |
Upright Piano |
Improvement of plate. |
Henry L. Ziegler |
| 1895 |
Upright Piano |
Improvement of plate and pinblock. |
Henry L. Ziegler |
| 1897 |
Pianino With Isolated Pin Block |
Improvement of plate and pinblock. |
Henry L. Ziegler |
| 1897 |
Sounding-Board Support for Pianos |
Improvement of soundboard support for uprights. |
Henry L. Ziegler |
| 1898 |
Sounding-Board Support |
Improvement of soundboard support for uprights. |
Henry L. Ziegler |
| 1899 |
Piano |
Plate nose for grand pianos. |
Henry L. Ziegler |
|
