Steinway & Sons - Technical Info - Patents Acquired from 1850 to 1874

Patents Acquired from 1850 to 1874

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

File Date Number Grant Date Number

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Henry Steinway, Jr.
"Pianoforte-Action"; action for grand or square piano featuring a wire post slideably mounted in parallel relation to the jack and resting on a spring attached to the key to achieve a repetition action
May 05, 1857
17,238

--- --- Henry Steinway, Jr. "Pianoforte-Action"; action for grand or square piano providing instantaneous return of the jack to its notch in the hammer-butt to enable improved quick repetition as compared to the invention described in 17,238; see Re. 1,271 Jun 15, 1858 20,595

--- --- Henry Steinway, Jr. "Pianoforte"; the use of a projection on the underside of the cast iron plate, overlapping and abutting against the edge of the tuning block and into which the agraffes are screwed from the upper surface of the plate Nov 29, 1859 26,300

--- --- Henry Steinway, Jr. "Grand Piano"; overstringing for grand piano Dec 20, 1859 26,532

--- --- Henry Steinway, Jr. "Pianoforte-Action"; arrangement of the repetition lever and the jack in combination with hammer-butt and key to allow escape of the jack with minimal friction and facilitate repetition May 21, 1861 32,386

--- --- Henry Steinway, Jr. "Pianoforte-Action"; arrangement of the repetition lever and jack to facilitate return of the jack to its notch in the hammer-butt for improved quickness of repetition May 21, 1861 32,387

--- --- Henry Steinway, Jr. "Improvement in Piano-Forte Actions"; reissue of 20,595 with corrected text and additional drawing to show the repetition lever in perspective Feb 04, 1862 Re. 1,271

--- --- Henry Steinway, Jr. "Improvement in Piano-Forte Actions"; construction of repetition mechanism which is independent of the jack so as to give both of them greater freedom and positiveness and certainty of action and imparting a better "touch" to the action Apr 08, 1862 34,910

--- --- William Steinway "Improvement in Piano-Fortes"; one-piece cast iron plate assembly for upright piano Jun 05, 1866 55,385

--- --- C.F. Theodor Steinway "Improvement in Piano-Fortes"; metallic action-frame secured directly to the pin block in "an upright or other piano- forte" and composed of metallic hangers provided with holes to receive the metal traverses; see Re. 7,950 and Re. 9,012 Aug 18, 1868 81,306

Dec 29, 1868 * --- C.F. Theodor Steinway "Improvement in Sound-Boards for Piano-Fortes"; soundboard bridge dowels Apr 06, 1869 88,749

--- --- C.F. Theodor Steinway "Improvement in Piano-Forte Actions"; metallic action of 81,306 improved for adaptation to grand pianos; see Re. 9,013 Aug 10, 1869 93,647

--- --- C.F. Theodor Steinway "Improvement in Piano-Fortes"; improved one-piece cast iron plate assembly of 55,385 adapted for grand piano in which a continuous soundboard bridge is extended in an unbroken curve from the treble to the bass-end Dec 14, 1869 97,982

May 24, 1871 ** --- C.F. Theodor Steinway "Improvement in Piano-Actions"; grand piano action with adjustable balance spring to lessen the force needed to depress the key Jun 06, 1871 115,782

--- --- C.F. Theodor Steinway "Improvement in Duplex Agraffe Scales for Piano-Fortes"; duplex agraffe scale for grand piano May 14, 1872 126,848

--- --- C.F. Theodor Steinway "Improvement in Piano-Fortes"; cupola plate construction for grand piano; see Re. 9,413 May 28, 1872 127,383

--- --- C.F. Theodor Steinway "Improvement in Piano-Fortes"; cupola plate construction for upright piano May 28, 1872 127,384

--- --- C.F. Theodor Steinway "Improvement in Piano Sounding- Boards"; reinforced soundboard ribs Feb 11, 1873 135,857

Oct 15, 1874 --- Albert Steinway "Improvement in Piano-Forte Attachments"; sostenuto mechanism for "all kinds of piano-fortes" Oct 27, 1874 156,388

Application		Inventor(s)	Title; Invention Claimed; Concordance	Letters Patent
File Date	Number			Grant Date	Number
---	---	Henry Steinway, Jr.	"Pianoforte-Action"; action for grand or square piano featuring a wire post slideably mounted in parallel relation to the jack and resting on a spring attached to the key to achieve a repetition action	May 05, 1857	17,238
---	---	Henry Steinway, Jr.	"Pianoforte-Action"; action for grand or square piano providing instantaneous return of the jack to its notch in the hammer-butt to enable improved quick repetition as compared to the invention described in 17,238; see Re. 1,271	Jun 15, 1858	20,595
---	---	Henry Steinway, Jr.	"Pianoforte"; the use of a projection on the underside of the cast iron plate, overlapping and abutting against the edge of the tuning block and into which the agraffes are screwed from the upper surface of the plate	Nov 29, 1859	26,300
---	---	Henry Steinway, Jr.	"Grand Piano"; overstringing for grand piano	Dec 20, 1859	26,532
---	---	Henry Steinway, Jr.	"Pianoforte-Action"; arrangement of the repetition lever and the jack in combination with hammer-butt and key to allow escape of the jack with minimal friction and facilitate repetition	May 21, 1861	32,386
---	---	Henry Steinway, Jr.	"Pianoforte-Action"; arrangement of the repetition lever and jack to facilitate return of the jack to its notch in the hammer-butt for improved quickness of repetition	May 21, 1861	32,387
---	---	Henry Steinway, Jr.	"Improvement in Piano-Forte Actions"; reissue of 20,595 with corrected text and additional drawing to show the repetition lever in perspective	Feb 04, 1862	Re. 1,271
---	---	Henry Steinway, Jr.	"Improvement in Piano-Forte Actions"; construction of repetition mechanism which is independent of the jack so as to give both of them greater freedom and positiveness and certainty of action and imparting a better "touch" to the action	Apr 08, 1862	34,910
---	---	William Steinway	"Improvement in Piano-Fortes"; one-piece cast iron plate assembly for upright piano	Jun 05, 1866	55,385
---	---	C.F. Theodor Steinway	"Improvement in Piano-Fortes"; metallic action-frame secured directly to the pin block in "an upright or other piano- forte" and composed of metallic hangers provided with holes to receive the metal traverses; see Re. 7,950 and Re. 9,012	Aug 18, 1868	81,306
Dec 29, 1868 *	---	C.F. Theodor Steinway	"Improvement in Sound-Boards for Piano-Fortes"; soundboard bridge dowels	Apr 06, 1869	88,749
---	---	C.F. Theodor Steinway	"Improvement in Piano-Forte Actions"; metallic action of 81,306 improved for adaptation to grand pianos; see Re. 9,013	Aug 10, 1869	93,647
---	---	C.F. Theodor Steinway	"Improvement in Piano-Fortes"; improved one-piece cast iron plate assembly of 55,385 adapted for grand piano in which a continuous soundboard bridge is extended in an unbroken curve from the treble to the bass-end	Dec 14, 1869	97,982
May 24, 1871 **	---	C.F. Theodor Steinway	"Improvement in Piano-Actions"; grand piano action with adjustable balance spring to lessen the force needed to depress the key	Jun 06, 1871	115,782
---	---	C.F. Theodor Steinway	"Improvement in Duplex Agraffe Scales for Piano-Fortes"; duplex agraffe scale for grand piano	May 14, 1872	126,848
---	---	C.F. Theodor Steinway	"Improvement in Piano-Fortes"; cupola plate construction for grand piano; see Re. 9,413	May 28, 1872	127,383
---	---	C.F. Theodor Steinway	"Improvement in Piano-Fortes"; cupola plate construction for upright piano	May 28, 1872	127,384
---	---	C.F. Theodor Steinway	"Improvement in Piano Sounding- Boards"; reinforced soundboard ribs	Feb 11, 1873	135,857
Oct 15, 1874	---	Albert Steinway	"Improvement in Piano-Forte Attachments"; sostenuto mechanism for "all kinds of piano-fortes"	Oct 27, 1874	156,388