Steinway & Sons Piano Patents (1875 - 1899)

A Tradition of Superior Design Innovations
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

Sources
Ratcliffe, Ronald and Stuart Isacoff. Steinway. San Francisco: Chronicle Books, 2002.