US1827096A - Folding key bed for pianos - Google Patents
Folding key bed for pianos Download PDFInfo
- Publication number
- US1827096A US1827096A US521205A US52120531A US1827096A US 1827096 A US1827096 A US 1827096A US 521205 A US521205 A US 521205A US 52120531 A US52120531 A US 52120531A US 1827096 A US1827096 A US 1827096A
- Authority
- US
- United States
- Prior art keywords
- keybed
- case
- folding
- sides
- piano
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C3/00—Details or accessories
- G10C3/12—Keyboards; Keys
Definitions
- FIG-3 IN VENTOR wazarm ATTORNEY Patented Oct. 13, 1931 UNITED sr rss rA aNT OFFICE ARTHUR H. MORSE, OF CINCINNATI, OHIO, ASSIGNOR TO THE, BALDWIN COMPANY, OF
- the object of my invention is to build a piano with a folding keybed so that the' piano when not in use will take up very little space and at the same time have a good appearance when closed.
- FIG. 1 is a cross section showing the keybed in place for the keys to be played.
- Fig. 2 is a cross section showing the keybed folded inside the case.
- Fig. 3 is an end view of the completed piano when closed. 4 is a detail of the key and wippen.
- a piano case 1 has a folding keybed 2 that is swung on arms 3 attached to the side of the case 1.
- On the side of case 1 is a track or guide 4 that runs up and down at a slight angle and curves backward at the upper end so to form a straight horizontal guide at this end.
- the keybed 2 has a keyframe 6 and keys 7 pivoted on pins in the keyframefi.
- a keyslip 8 is in front of the keyframe 6 and at such a height as to cover any opening between the keyframe 6 and the keys 7.
- There. are also keyblocks at each end to cover any opening when the keybed 2 is pulled open.
- A. piano action 9 is hung to the back 10 in a position to be easily engaged by the keys 7 when the keybed 2 is opened.
- balance springs 11 are fastened to the upper part of the case 1 and to the back of the keybed 2. This balance spring 11 is of the usual coil spring type.
- the piano case 1 is made with sides glued to the back 10 which carries the usual sound board, plate and strings.
- the keybed 2 is swung on the arms 3 that are placed some,- what forward of center on the keybed. When the handles 12 are grasped and the keybed 2 pulled forward the rear end will rise, assisted by the balance springs 11 and the 1931. s mi No. 521,205.
- a piano case having a folding keybed. keys pivoted on the keybed, guides on the sides of the case, projections on the ends of the keybed for engaging the guides, swinging arms pivoted to the ease sides and to the ends of the keybed in such position that the front of the keybed will swing outward and downward and the rear of the keybed will rise upward and inward.
- a piano case having a folding keybed, keys pivoted on the keybed. guides up and down the sides of the case with a cross guide at the upper end, projections on the ends of the keybed for engaging the guides, swinging arins pivoted to the case sides and to the ends of the keybed in such position that the front of the keybed will swing outward and downward and rear of the keybed will rise upward and inward.
- a piano case having a folding keybed, keys pivoted on the keybed, balance springs attached to the sides of the case and the back of the keybed, guides up and down the sides of the case with a cross guide at the up er end, projections on the ends of the lie d for engaging the guides, swinging arms pivoted to the case sides and to the ends of the keybed in such position that the front of the keybed will swing outward and downward and rear of the keybed will rise upward and inward.
- a piano case having, a folding keybed, keys pivoted on the keybed, balance springs attached to the sides of the casevand the back of the keybed, guides up and down the sides ofthe case with a cross guide at the upper end, projections on the ends of the keybed for engaging the guides, swinging arms pivoted tothe case sides and to the ends of the keybed in such position that the front of the keybed will swing outward and downward and rear of the keybed will rise upward and inward. the balance springs supporting the rear of the keybed.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Electrophonic Musical Instruments (AREA)
Description
Oct. 13, 1931.
A. H. MORSE FOLDING KEY BED FOR -PIANOS Filed March 9, 1931 5 Sheets-Sheet 1 I NVENTOR WWW 'MK'QM ATTORNEY 0C 13, 1931. A, H, M RSE 1,827,096
FOLDING KEY BED FOR PIANOS INVENTOTZ ATTORNEY 01: 13, 1931. A H, MORSE 1,827,096
FOLDING KEY BED FOR PIANOS 7 Filed March 9, 1931 5 Sheets-Sheet FIG. 4
FIG-3 IN VENTOR wazarm ATTORNEY Patented Oct. 13, 1931 UNITED sr rss rA aNT OFFICE ARTHUR H. MORSE, OF CINCINNATI, OHIO, ASSIGNOR TO THE, BALDWIN COMPANY, OF
CINCINNATI, OHIO FOLDING KEY BED r03 rmnos Application filed March 9,
The object of my invention is to build a piano with a folding keybed so that the' piano when not in use will take up very little space and at the same time have a good appearance when closed.
0 piano action.
Another object of my invention is to so balance the folding keybed that the rear end will. rise into position with very little effort and then will slide backward to engage the In the drawings Fig. 1. is a cross section showing the keybed in place for the keys to be played. Fig. 2 is a cross section showing the keybed folded inside the case. Fig. 3 is an end view of the completed piano when closed. 4 is a detail of the key and wippen.
A piano case 1 has a folding keybed 2 that is swung on arms 3 attached to the side of the case 1. On the side of case 1 is a track or guide 4 that runs up and down at a slight angle and curves backward at the upper end so to form a straight horizontal guide at this end. There are guide rollers 5 on the end of the keybed 2 that roll in the slot of guide 4. The keybed 2 has a keyframe 6 and keys 7 pivoted on pins in the keyframefi. A keyslip 8 is in front of the keyframe 6 and at such a height as to cover any opening between the keyframe 6 and the keys 7. There. are also keyblocks at each end to cover any opening when the keybed 2 is pulled open. A. piano action 9 is hung to the back 10 in a position to be easily engaged by the keys 7 when the keybed 2 is opened.
To balance the weight of the keybed 2, keyframe 6, keys 7 keyslip 8 and other parts used. to cover it for appearance, balance springs 11 are fastened to the upper part of the case 1 and to the back of the keybed 2. This balance spring 11 is of the usual coil spring type.
The piano case 1 is made with sides glued to the back 10 which carries the usual sound board, plate and strings. The keybed 2 is swung on the arms 3 that are placed some,- what forward of center on the keybed. When the handles 12 are grasped and the keybed 2 pulled forward the rear end will rise, assisted by the balance springs 11 and the 1931. s mi No. 521,205.
" 'Many modifications may be made of the arms and guides and different balances may be used, but what I claim as my invention is: 1. A piano case having a folding keybed,
guides on the sides of the case, projections on the ends of the keybed for engaging the guides, swinging'arms pivoted to the case-@- sides and to the ends of the keybed in such position that the front of the keybed will swing outward and downward and the rear of the keybed will rise upward and inward.
2. A piano case having a folding keybed,
guides up and down the sides of the case with a cross guide at the upper end, projections on the ends of the keybed for engaging the guides, swinging arms pivoted to the case sides and to the ends of thekeybed in suchposition that the front of the keybed will swing outward and downward and rear of the keybed will rise upward and inward.
3. A piano case having a folding keybed. keys pivoted on the keybed, guides on the sides of the case, projections on the ends of the keybed for engaging the guides, swinging arms pivoted to the ease sides and to the ends of the keybed in such position that the front of the keybed will swing outward and downward and the rear of the keybed will rise upward and inward.
4. A piano case having a folding keybed, keys pivoted on the keybed. guides up and down the sides of the case with a cross guide at the upper end, projections on the ends of the keybed for engaging the guides, swinging arins pivoted to the case sides and to the ends of the keybed in such position that the front of the keybed will swing outward and downward and rear of the keybed will rise upward and inward.
5. A piano case having a folding keybed, keys pivoted on the keybed, balance springs attached to the sides of the case and the back of the keybed, guides up and down the sides of the case with a cross guide at the up er end, projections on the ends of the lie d for engaging the guides, swinging arms pivoted to the case sides and to the ends of the keybed in such position that the front of the keybed will swing outward and downward and rear of the keybed will rise upward and inward.
6. A piano case having, a folding keybed, keys pivoted on the keybed, balance springs attached to the sides of the casevand the back of the keybed, guides up and down the sides ofthe case with a cross guide at the upper end, projections on the ends of the keybed for engaging the guides, swinging arms pivoted tothe case sides and to the ends of the keybed in such position that the front of the keybed will swing outward and downward and rear of the keybed will rise upward and inward. the balance springs supporting the rear of the keybed.
March 7, 1931.
ARTHUR H. MORSE.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US521205A US1827096A (en) | 1931-03-09 | 1931-03-09 | Folding key bed for pianos |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US521205A US1827096A (en) | 1931-03-09 | 1931-03-09 | Folding key bed for pianos |
Publications (1)
Publication Number | Publication Date |
---|---|
US1827096A true US1827096A (en) | 1931-10-13 |
Family
ID=24075809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US521205A Expired - Lifetime US1827096A (en) | 1931-03-09 | 1931-03-09 | Folding key bed for pianos |
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US (1) | US1827096A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2734416A (en) * | 1956-02-14 | corwin | ||
US4376402A (en) * | 1980-06-18 | 1983-03-15 | Helpinstill Ii Charles T | Folding piano |
US4641565A (en) * | 1984-05-01 | 1987-02-10 | Nippon Gakki Seizo Kabushiki Kaisha | Upright piano |
-
1931
- 1931-03-09 US US521205A patent/US1827096A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2734416A (en) * | 1956-02-14 | corwin | ||
US4376402A (en) * | 1980-06-18 | 1983-03-15 | Helpinstill Ii Charles T | Folding piano |
US4641565A (en) * | 1984-05-01 | 1987-02-10 | Nippon Gakki Seizo Kabushiki Kaisha | Upright piano |
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