Steinway & Sons - Technical Info - Patents Acquired from 1875 to 1899

Patents Acquired from 1875 to 1899

Application Inventor(s) Title; Invention Claimed;
Concordance Letters Patent

File Date Number Grant Date Number

May 15, 1875
---
Albert Steinway
"Improvement in Piano Attachments"; sostenuto mechanism of 156,388 adapted for grand pianos
Jun 01, 1875
164,052

May 15, 1875 --- Albert Steinway "Improvement in Piano Attachments"; sostenuto mechanism of 156,388 adapted for upright pianos Jun 01, 1875 164,053

May 15, 1875 --- Albert Steinway "Improvement in Piano Attachments"; sostenuto mechanism of 156,388 adapted for square pianos Jun 01, 1875 164,054

Oct 29, 1875 --- C.F. Theodor Steinway "Design for Metal Frame in Pianos"; plate design for centennial grand piano Nov 09, 1875 Des. 8,782

Oct 20, 1875 --- C.F. Theodor Steinway "Improvement in Grand Piano-Forte Actions"; adjustable capstan for grand piano action Nov 30, 1875 170,645

Oct 20, 1875 --- C.F. Theodor Steinway "Improvement in Agraffes for Piano- Fortes"; capo tasto agraffe for grand piano Nov 30, 1875 170,646

Oct 20, 1875 --- C.F. Theodor Steinway "Improvement in Metal Frames for Piano-Fortes"; cast iron frame for centennial grand piano Nov 30, 1875 170,647

May 13, 1876 --- C.F. Theodor Steinway "Improvement in Piano-Fortes"; nose bolt having removable nut Jun 13, 1876 178,565

July 22, 1876 --- C.F. Theodor Steinway "Improvement in Piano Sound-Boards"; soundboard bind bar Aug 01, 1876 180,671

Apr 25, 1877 --- Albert Steinway "Improvement in Piano-Forte Attachments"; mechanism for disengaging the action from the keys to produce a silent keyboard May 08, 1877 190,639

Oct 26, 1877 --- C.F. Theodor Steinway "Improvement in Piano-Action Frames"; reissue of 81,306; see Re. 9,012 Nov 13, 1877 Re. 7,950

Mar 20, 1878 --- C.F. Theodor Steinway "Improvement in Grand Piano-Fortes"; grand piano case construction; corresponds in part to Ger. 4,372 May 21, 1878 204,106

Mar 20, 1878 --- C.F. Theodor Steinway "Improvement in Piano-Forte Actions"; double key for upright piano; corresponds in part to Ger. 4,435 May 21, 1878 204,107

Mar 01, 1878 --- C.F. Theodor Steinway "Improvement in Piano-Fortes"; screwed-on tasto bar for upright piano; corresponds in part to Ger. 4,435 May 21, 1878 204,108

Mar 01, 1878 --- C.F. Theodor Steinway "Improvement in Piano-Forte Agraffes"; agraffe cast or stamped out with a flat notched head and tapered square stem May 21, 1878 204,109

Mar 20, 1878 --- C.F. Theodor Steinway "Improvement in Sounding-Boards for Piano-Fortes"; soundboard sustaining bar arranged cross-wise in relation to the ribs; corresponds in part to Ger. 4,372 May 21, 1878 204,110

Mar 01, 1878 --- C.F. Theodor Steinway "Improvement in Capodastro-Frames for Piano-Fortes"; duplex capo tasto bar for upright piano; corresponds in part to Ger. 4,435 May 21, 1878 204,111

Jun 20, 1878 --- C.F. Theodor Steinway "Design for a Piano"; grand piano case design Jul 02, 1878 Des. 10,740

Jun 20, 1878 --- C.F. Theodor Steinway "Design for an Upright Piano-Forte Case"; upright piano case design Jul 02, 1878 Des. 10,741

Jun 05, 1878 --- C.F. Theodor Steinway "Improvement in Piano-Forte Repeating- Actions"; repetition hammer-butt to produce continuous escapement for upright pianos; corresponds in part to Ger. 4,435 Jul 02, 1878 205,696

Jul 17, 1878 --- C.F. Theodor Steinway "Innovations in the Construction of Pianofortes, Especially of Grand Pianos"; grand piano case construction; corresponds to 204,106 and 204,110 Mar 20, 1879 Ger. 4,372

Jul 17, 1878 --- C.F. Theodor Steinway "Innovations in Upright Pianofortes"; upright piano capo tasto bar construction; corresponds to 204,107; 204,108; 204,111; and 205,696 Mar 26, 1879 Ger. 4,435

May 14, 1879 --- C.F. Theodor Steinway "Improvement in Devices for Leveling the Key-Frames of Piano-Fortes"; keyframe regulating mechanism Jul 22, 1879 217,828

Jul 10, 1879 --- C.F. Theodor Steinway "Improvement in Devices for Adjusting Piano-Forte-Action Frames"; mechanism in combination with the key-block for adjusting the hammer strike-point on the strings Sep 02, 1879 219,323

Oct 21, 1879 --- C.F. Theodor Steinway "Improvement in Piano-Action Frames"; reissue of 81,306 and 7,950 Dec 30, 1879 Re. 9,012

Oct 29, 1879 --- C.F. Theodor Steinway "Improvement in Piano-Forte Actions"; reissue of 93,647 Dec 30, 1879 Re. 9,013

Jan 14, 1880 --- C.F. Theodor Steinway "Piano-Action and Action-Frame"; action and action frame for upright piano Apr 13, 1880 226,462

Mar 10, 1880 --- C.F. Theodor Steinway "Screw-Clamp for Wood-Bending Machines" Jun 22, 1880 229,198

Mar 22, 1880 --- C.F. Theodor Steinway "Design for a Piano-Forte Case"; upright piano case design Jul 06, 1880 Des. 11,856

Mar 19, 1880 --- C.F. Theodor Steinway "Upright Piano-Forte"; wooden frame and cast iron plate for upright piano Jul 20, 1880 230,354

Mar 10, 1880 --- C.F. Theodor Steinway "Piano-Forte Hammer"; hammer having compressing-ligature extending transversely through the wider portion of the felt body and tightly strained Aug 24, 1880 231,629

Apr 12, 1880 --- C.F. Theodor Steinway "Piano-Forte Hammer"; felt-covered hammer head having hardened portion below the nose Aug 24, 1880 231,630

May 14, 1880 --- C.F. Theodor Steinway "Key-Frame Bed for Piano-Fortes"; key- frame bed constructed of narrow, longitudinal wooden strips to prevent the bed from acting as a sounding board Oct 05, 1880 232,857

May 13, 1880 --- C.F. Theodor Steinway "Piano Sounding-Board Bridge;" laminated soundboard bridge constructed of alternating layers of hardwood (e.g. maple) and softwood (e.g. pine) Oct 26, 1880 233,710

Jun 17, 1880 --- C.F. Theodor Steinway "Piano-Forte"; reissue of 127,383 Oct 26, 1880 Re. 9,431

Jul 15, 1882 --- C.F. Theodor Steinway "Piano-Action"; grand piano action with support spring to lessen the weight on the inner ends of the keys Jan 23, 1883 270,914

Mar 26, 1884 --- C.F. Theodor Steinway "Piano-Frame"; treble bell for grand piano Mar 31, 1885 314,740

Mar 26, 1884 --- C.F. Theodor Steinway "Piano-Pedal"; anti-friction trap work to prevent creaking noise from pedals Mar 31, 1885 314,741

Apr 11, 1884 --- C.F. Theodor Steinway "Piano-Frame"; case construction and double cupola plate for grand piano Mar 31, 1885 314,742

Mar 26, 1884 --- C.F. Theodor Steinway "Panel for Upright Pianos"; desk panel for upright piano Apr 07, 1885 315,447

Jul 27, 1887 245,412 Henry Ziegler "Music Rack Attachment for Upright Pianos" Feb 28, 1888 378,486

Mar 08, 1889 302,529 Henry Ziegler "Music Rack Attachment for Upright Pianos" Aug 13, 1889 408,868

Apr 22, 1893 471,439 Henry Ziegler "String-Frame for Upright Pianos"; plate for upright piano having a scale-rib extending from the treble to the base of the plate and strengthening brace ribs extending from the bottom of the plate across the scale-rib to the top of the plate Nov 21, 1893 509,110

Jul 15, 1893 480,581 Henry Ziegler "Upright Piano"; plate for upright piano provided with a scale-rib and brace-ribs extending across the scale-rib Nov 21, 1893 509,111

Sep 25, 1894 524,078 Henry Ziegler "Upright Piano"; plate with backwardly- extending lugs overlapping top portion of main frame and suspended pin block; corresponds to Ger. 90,821 Jan 08, 1895 532,257

Jan 08, 1895 --- Henry Ziegler "Pianino With Isolated Pin Block"; plate with backwardly-extending lugs overlapping top portion of main frame and suspended pin block; corresponds to 532,257 Mar 08, 1897 Ger. 90,821

Dec 09, 1896
Aug 18, 1897 648,721 Henry Ziegler "Sounding-Board Support for Pianos"; upright piano soundboard support Nov 02, 1897 593,039

Feb 12, 1898 670,053 Henry Ziegler "Sounding-Board Support"; upright piano soundboard support Oct 11, 1898 612,222

Mar 18, 1899 709,622 Henry Ziegler "Piano"; plate nose for grand piano Oct 03, 1899 634,282

Application		Inventor(s)	Title; Invention Claimed; Concordance	Letters Patent
File Date	Number			Grant Date	Number
May 15, 1875	---	Albert Steinway	"Improvement in Piano Attachments"; sostenuto mechanism of 156,388 adapted for grand pianos	Jun 01, 1875	164,052
May 15, 1875	---	Albert Steinway	"Improvement in Piano Attachments"; sostenuto mechanism of 156,388 adapted for upright pianos	Jun 01, 1875	164,053
May 15, 1875	---	Albert Steinway	"Improvement in Piano Attachments"; sostenuto mechanism of 156,388 adapted for square pianos	Jun 01, 1875	164,054
Oct 29, 1875	---	C.F. Theodor Steinway	"Design for Metal Frame in Pianos"; plate design for centennial grand piano	Nov 09, 1875	Des. 8,782
Oct 20, 1875	---	C.F. Theodor Steinway	"Improvement in Grand Piano-Forte Actions"; adjustable capstan for grand piano action	Nov 30, 1875	170,645
Oct 20, 1875	---	C.F. Theodor Steinway	"Improvement in Agraffes for Piano- Fortes"; capo tasto agraffe for grand piano	Nov 30, 1875	170,646
Oct 20, 1875	---	C.F. Theodor Steinway	"Improvement in Metal Frames for Piano-Fortes"; cast iron frame for centennial grand piano	Nov 30, 1875	170,647
May 13, 1876	---	C.F. Theodor Steinway	"Improvement in Piano-Fortes"; nose bolt having removable nut	Jun 13, 1876	178,565
July 22, 1876	---	C.F. Theodor Steinway	"Improvement in Piano Sound-Boards"; soundboard bind bar	Aug 01, 1876	180,671
Apr 25, 1877	---	Albert Steinway	"Improvement in Piano-Forte Attachments"; mechanism for disengaging the action from the keys to produce a silent keyboard	May 08, 1877	190,639
Oct 26, 1877	---	C.F. Theodor Steinway	"Improvement in Piano-Action Frames"; reissue of 81,306; see Re. 9,012	Nov 13, 1877	Re. 7,950
Mar 20, 1878	---	C.F. Theodor Steinway	"Improvement in Grand Piano-Fortes"; grand piano case construction; corresponds in part to Ger. 4,372	May 21, 1878	204,106
Mar 20, 1878	---	C.F. Theodor Steinway	"Improvement in Piano-Forte Actions"; double key for upright piano; corresponds in part to Ger. 4,435	May 21, 1878	204,107
Mar 01, 1878	---	C.F. Theodor Steinway	"Improvement in Piano-Fortes"; screwed-on tasto bar for upright piano; corresponds in part to Ger. 4,435	May 21, 1878	204,108
Mar 01, 1878	---	C.F. Theodor Steinway	"Improvement in Piano-Forte Agraffes"; agraffe cast or stamped out with a flat notched head and tapered square stem	May 21, 1878	204,109
Mar 20, 1878	---	C.F. Theodor Steinway	"Improvement in Sounding-Boards for Piano-Fortes"; soundboard sustaining bar arranged cross-wise in relation to the ribs; corresponds in part to Ger. 4,372	May 21, 1878	204,110
Mar 01, 1878	---	C.F. Theodor Steinway	"Improvement in Capodastro-Frames for Piano-Fortes"; duplex capo tasto bar for upright piano; corresponds in part to Ger. 4,435	May 21, 1878	204,111
Jun 20, 1878	---	C.F. Theodor Steinway	"Design for a Piano"; grand piano case design	Jul 02, 1878	Des. 10,740
Jun 20, 1878	---	C.F. Theodor Steinway	"Design for an Upright Piano-Forte Case"; upright piano case design	Jul 02, 1878	Des. 10,741
Jun 05, 1878	---	C.F. Theodor Steinway	"Improvement in Piano-Forte Repeating- Actions"; repetition hammer-butt to produce continuous escapement for upright pianos; corresponds in part to Ger. 4,435	Jul 02, 1878	205,696
Jul 17, 1878	---	C.F. Theodor Steinway	"Innovations in the Construction of Pianofortes, Especially of Grand Pianos"; grand piano case construction; corresponds to 204,106 and 204,110	Mar 20, 1879	Ger. 4,372
Jul 17, 1878	---	C.F. Theodor Steinway	"Innovations in Upright Pianofortes"; upright piano capo tasto bar construction; corresponds to 204,107; 204,108; 204,111; and 205,696	Mar 26, 1879	Ger. 4,435
May 14, 1879	---	C.F. Theodor Steinway	"Improvement in Devices for Leveling the Key-Frames of Piano-Fortes"; keyframe regulating mechanism	Jul 22, 1879	217,828
Jul 10, 1879	---	C.F. Theodor Steinway	"Improvement in Devices for Adjusting Piano-Forte-Action Frames"; mechanism in combination with the key-block for adjusting the hammer strike-point on the strings	Sep 02, 1879	219,323
Oct 21, 1879	---	C.F. Theodor Steinway	"Improvement in Piano-Action Frames"; reissue of 81,306 and 7,950	Dec 30, 1879	Re. 9,012
Oct 29, 1879	---	C.F. Theodor Steinway	"Improvement in Piano-Forte Actions"; reissue of 93,647	Dec 30, 1879	Re. 9,013
Jan 14, 1880	---	C.F. Theodor Steinway	"Piano-Action and Action-Frame"; action and action frame for upright piano	Apr 13, 1880	226,462
Mar 10, 1880	---	C.F. Theodor Steinway	"Screw-Clamp for Wood-Bending Machines"	Jun 22, 1880	229,198
Mar 22, 1880	---	C.F. Theodor Steinway	"Design for a Piano-Forte Case"; upright piano case design	Jul 06, 1880	Des. 11,856
Mar 19, 1880	---	C.F. Theodor Steinway	"Upright Piano-Forte"; wooden frame and cast iron plate for upright piano	Jul 20, 1880	230,354
Mar 10, 1880	---	C.F. Theodor Steinway	"Piano-Forte Hammer"; hammer having compressing-ligature extending transversely through the wider portion of the felt body and tightly strained	Aug 24, 1880	231,629
Apr 12, 1880	---	C.F. Theodor Steinway	"Piano-Forte Hammer"; felt-covered hammer head having hardened portion below the nose	Aug 24, 1880	231,630
May 14, 1880	---	C.F. Theodor Steinway	"Key-Frame Bed for Piano-Fortes"; key- frame bed constructed of narrow, longitudinal wooden strips to prevent the bed from acting as a sounding board	Oct 05, 1880	232,857
May 13, 1880	---	C.F. Theodor Steinway	"Piano Sounding-Board Bridge;" laminated soundboard bridge constructed of alternating layers of hardwood (e.g. maple) and softwood (e.g. pine)	Oct 26, 1880	233,710
Jun 17, 1880	---	C.F. Theodor Steinway	"Piano-Forte"; reissue of 127,383	Oct 26, 1880	Re. 9,431
Jul 15, 1882	---	C.F. Theodor Steinway	"Piano-Action"; grand piano action with support spring to lessen the weight on the inner ends of the keys	Jan 23, 1883	270,914
Mar 26, 1884	---	C.F. Theodor Steinway	"Piano-Frame"; treble bell for grand piano	Mar 31, 1885	314,740
Mar 26, 1884	---	C.F. Theodor Steinway	"Piano-Pedal"; anti-friction trap work to prevent creaking noise from pedals	Mar 31, 1885	314,741
Apr 11, 1884	---	C.F. Theodor Steinway	"Piano-Frame"; case construction and double cupola plate for grand piano	Mar 31, 1885	314,742
Mar 26, 1884	---	C.F. Theodor Steinway	"Panel for Upright Pianos"; desk panel for upright piano	Apr 07, 1885	315,447
Jul 27, 1887	245,412	Henry Ziegler	"Music Rack Attachment for Upright Pianos"	Feb 28, 1888	378,486
Mar 08, 1889	302,529	Henry Ziegler	"Music Rack Attachment for Upright Pianos"	Aug 13, 1889	408,868
Apr 22, 1893	471,439	Henry Ziegler	"String-Frame for Upright Pianos"; plate for upright piano having a scale-rib extending from the treble to the base of the plate and strengthening brace ribs extending from the bottom of the plate across the scale-rib to the top of the plate	Nov 21, 1893	509,110
Jul 15, 1893	480,581	Henry Ziegler	"Upright Piano"; plate for upright piano provided with a scale-rib and brace-ribs extending across the scale-rib	Nov 21, 1893	509,111
Sep 25, 1894	524,078	Henry Ziegler	"Upright Piano"; plate with backwardly- extending lugs overlapping top portion of main frame and suspended pin block; corresponds to Ger. 90,821	Jan 08, 1895	532,257
Jan 08, 1895	---	Henry Ziegler	"Pianino With Isolated Pin Block"; plate with backwardly-extending lugs overlapping top portion of main frame and suspended pin block; corresponds to 532,257	Mar 08, 1897	Ger. 90,821
Dec 09, 1896 Aug 18, 1897	648,721	Henry Ziegler	"Sounding-Board Support for Pianos"; upright piano soundboard support	Nov 02, 1897	593,039
Feb 12, 1898	670,053	Henry Ziegler	"Sounding-Board Support"; upright piano soundboard support	Oct 11, 1898	612,222
Mar 18, 1899	709,622	Henry Ziegler	"Piano"; plate nose for grand piano	Oct 03, 1899	634,282