WO2003015073A2 - Adjustments in piano actions - Google Patents
Adjustments in piano actions Download PDFInfo
- Publication number
- WO2003015073A2 WO2003015073A2 PCT/US2002/025656 US0225656W WO03015073A2 WO 2003015073 A2 WO2003015073 A2 WO 2003015073A2 US 0225656 W US0225656 W US 0225656W WO 03015073 A2 WO03015073 A2 WO 03015073A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- action
- piano
- arrangement according
- frame
- keyboard frame
- Prior art date
Links
Classifications
-
- 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
- G10C3/16—Actions
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C1/00—General design of pianos, harpsichords, spinets or similar stringed musical instruments with one or more keyboards
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C1/00—General design of pianos, harpsichords, spinets or similar stringed musical instruments with one or more keyboards
- G10C1/04—General design of pianos, harpsichords, spinets or similar stringed musical instruments with one or more keyboards of grand pianos
Definitions
- the present invention generally relates to pianos and their associated keyboards.
- the present invention also generally relates to pianos and associated arrangements employed for mounting a sostenuto rod.
- a keyboard for a grand piano includes a set of keys mounted on a frame, to which is mounted the piano's action stack.
- the action stack contains all the hammers that strike the piano's strings and produce the piano's sound. Taken together, the action stack and the piano' s keyboard form a complete unit in a grand piano called the “action” or “piano's action” and, normally, this unit is easily removable from the piano.
- a grand piano such as a Steinway piano
- a keyboard comprised of a set of keys mounted on a frame to which is mounted the piano's action stack.
- the action stack contains all the hammers that strike the piano's strings and produce the piano's sound.
- the action stack and the piano's keyboard form a complete unit in a grand piano called the "piano's action" and, normally, this unit is easily removed from the piano.
- a sostenuto rod is typically supplied as part of the action.
- a "sostenuto rod”, associated with a sostenuto pedal will be well-known to one of ordinary skill in the art and, thus, would not appear to warrant further discussion herein . )
- provisions are made for various adjustments that can easily be made by a technician, such that a new keyboard can quickly be installed into any piano of a given make and model without any time-consuming custom hand-fitting.
- This will potentially allow for the mass producing of new keyboards that can easily be fit into existing pianos.
- It also affords a concert artist the ability to perform on his/her own keyboard by having it easily installed into the piano at a given concert hall, such as one in another city when the pianist is on tour. The artist will then have the use of his/her keyboard that has the "touch" as well as the size of keys that he/she prefers without having to transport his/her entire piano.
- An arrangement for facilitating the installation of an action in a piano body comprising: at least one adjusting medium being adapted to facilitate the positioning of the action with respect to a piano body, the at least one adjusting medium being associated solely with the action.
- a piano action comprising: an arrangement for facilitating the installation of the action in a piano body, the arrangement comprising at least one adjusting medium being adapted to facilitate the positioning of the action with respect to a piano body, the at least one adjusting medium being associated solely with the action.
- the present invention in accordance with at least one presently preferred embodiment, also involves improvements in the manner of mounting a sostenuto rod to the action in a grand piano, such as a Steinway piano.
- a sostenuto rod bracket in accordance with at least one presently preferred embodiment of the present invention, in a piano comprising an action frame and a sostenuto rod bracket, the sostenuto rod bracket being adapted to accommodate a sostenuto rod, the improvement comprising: the sostenuto rod bracket being attached to the action frame.
- Method of providing for the mounting of a sostenuto rod in a piano comprising: providing an action frame; providing a sostenuto rod bracket, the sostenuto rod bracket being adapted to accommodate a sostenuto rod; and attaching the sostenuto rod bracket to the action frame.
- an action stack bracket for a piano comprising: a main body; and a front leg extending from the main body; the front leg being pivotable with respect to the main body to accommodate angled key shanks in a piano.
- Figures la and lb are top and left side views, respectively, of the left side of a keyboard frame.
- Figure 2 is a top view of the right side of a keyboard frame.
- Figure 3a is a bottom view of the rear of a keyboard frame .
- Figure 3b is a close-up frontal view
- Figure 3c a close-up bottom view, of an adjustable block and associated components.
- Figure 4a is a bottom view of the front of a keyboard frame.
- Figure 4b is a close-up frontal view
- Figure 4c a close-up bottom view, of an adjustable block and associated components.
- Figures 5a and 5b are a front view and bottom view, respectively, of a keyboard frame back rail and attached slat.
- Figure 6 is a side view of a piano key and associated components.
- Figures 7a and 7b are a side view and top view, respectively, of a back rail of a keyboard frame.
- Figures 8a and 8b are top and closeup views, respectively, of the front rail of a keyboard frame and other components.
- Figure 9 is a general perspective view of a piano action.
- Figure 10 is a side view of a conventional arrangement including a sostenuto rod bracket.
- Figure 11 is a side view of a different arrangement involving a sostenuto rod bracket.
- the action is a complete unit that includes a keyboard and an action stack.
- the keyboard is a set of keys mounted to a frame.
- the action stack which holds all the hammers of the piano, is mounted to this key frame. Pressing a key in the action will actuate a hammer in the action.
- This unit normally is slid into a compartment inside the piano. Once installed in a piano, the action is normally free to move about 1/8 of an inch to the right by the use of the "soft pedal".
- a soft pedal operates such that a hammer that will normally hit 3 strings can be made to play softer by sliding the action to the right where it will now hit only 2 strings.
- This movement to the right is typically accomplished by a lever that fits into a slot in the bottom of the key frame.
- a spring mounted on the right side of the piano typically pushes on the right side of the key frame and pushes the action back to the left once the soft pedal is released. The action will then typically move to the left until the left side of the frame meets a stop in the left side of the piano. Glide pins mounted in the frame insert into fittings in the cheek blocks and these keep the action in position front to back.
- various adjustments can be made on or relative to a piano keyboard so that a new action can be installed into an existing piano and made to work properly without changing anything on the original piano. This will allow the new action and the original action to be interchangeable. Once the new keyboard has been adjusted, the original action and the new action can then be interchanged in a couple of minutes.
- Any and all such adjustment mechanisms may preferably be included with respect to an action (with keyboard) .
- FIG. la top and left side views, respectively, of a keyboard frame 102 including slat 103, back rail 106, balance rail 108 and front rail 110
- provision may be made for an adjustment on the left side of the frame of the keyboard so that the hammers on the action stack can be made to align accurately under the strings of the piano.
- there may be an adjustable piece provided at the left side of the keyboard frame 102, attached to a slat 103 via screws 105 he like.
- the adjustable piece 104 may be made out of metal or any other suitable material. By adjusting the screws or other adjusting elements 105, the adjustable piece 104 can be moved away from or towards the slat 103.
- a suitable number of spacers 112 may be provided about each screw (or other adjusting element) 105, and may fill the gap between the adjustable piece 104 and the slat 103.
- FIG. 2 a top view of a keyboard frame 202 including slat 203, back rail 206, balance rail 208 and front rail 210
- provision may be made for an adjustment on the right side of the frame of the keyboard so that an action return spring can be made to operate at its proper strength.
- an adjustable piece 204 which may be substantially similar in general makeup to the one shown at 104 in Figure la, may be provided. Again, the adjustable piece " 204 may be attached to slat 203 via screws or the like (205) and may be made out of metal or any other suitable material. Again, by adjusting the screws or other adjusting elements (205) , the adjustable piece 204 can be moved away from or towards the slat 203.
- FIG. 3a is a bottom view of a keyboard frame
- the blocks 314 may be provided in back rail 306 to allow for the adjustment of the overall height of the action stack. This can compensate for variations in string height without having to regulate the action.
- the blocks 314 can also be used to "bed" the back rail to the bed of the piano.
- Figure 3b is a close-up frontal view
- Figure 3c a close-up bottom view, of one of the adjustable blocks 314 and associated components.
- the adjustable block 314 may be attached via screws or the like 316 to the back rail 306.
- Spacers 318 may be provided about each screw (or other adjusting element) 316 to essentially fill the gap between the adjustable block 314 and the back rail 306.
- each adjustable block may essentially reside in a recess 320 provided within the back rail.
- adjustable blocks 314 such as those shown in Figures 3a-3c can provide a fine height adjustment at the back rail 306 that hitherto might not have been possible.
- adjustable blocks 414 may be provided in the front rail 410 of the frame 402 to allow for the adjustment of the overall height of the front of the keys. This compensates for variations in the height of the fallboard without having to regulate the height of the keys.
- the blocks can also be used to "bed" the front rail to the bed of the piano.
- Figure 4b is a close-up cut-away elevational view
- Figure 4c a close-up bottom view, of one of the adjustable blocks 414 and associated components.
- an adjustable block 414 may be attached via screws or the like (416) to the front rail 410.
- spacers 418 may be provided about each screw (or other adjusting element) 416 to essentially fill the gap between the adjustable block 414 and the front rail 410.
- each adjustable block 414 may essentially reside in a recess 420 provided within the front rail 410.
- adjustable blocks 414 such as those shown in Figures 4a-4c can provide a fine height adjustment at the front rail 410 that hitherto might not have been possible.
- a provision may be made for an adjustment in the configuration of the slot 522 normally used by the soft pedal to shift the action.
- an adjustable block 524 may be movable from left to right in order to adjust the position of the surface 525 against which a lever from the "soft pedal” pushes in order to shift the entire action. In this way, it will not be necessary to adjust the soft pedal lever mechanism itself, as has normally been the case.
- two screws 526 may be provided within elongated slots 528 to permit the aforementioned left-to-right adjustment .
- Figure 6 (a side view of a piano key 630 and associated components, as well as back rail 606, balance rail 608 and balance mechanism 631) illustrates a component 632 which may be termed a "damper lifter". As shown, the damper lifter 632 may be mounted on the back of key 630, and damper lifter felt 634 may be mounted as part of the damper lifter 632.
- damper lifter 632 will be so positioned and configured as to strike a lever 633a which moves a rod 633b to lift a string damper 633, all when key 630 is played.
- the damper lifter 632 is preferably adjustable and compensates for variations in the height of the back rail 606 (e.g., in accordance with the embodiment illustrated in Figs. 3a-3c) .
- damper lifters 632 of differing length may preferably compensate for differences in the depth of the action compartment in the piano.
- the vertical position of the damper lifter 632 may preferably be adjustable to compensate for variation in the height of the back rail 606 and also for possible variation in height in the lever 633a.
- the damper lifter 632 is a removable part that includes a small board or slat 632a to which conventional felt 634 may be attached. As shown, the small board or slat 632a may be attached via a screw 636 to the piano key 630, and spacers (e.g.
- metal spacers 638 are preferably provided about the screw 636 both between the board/slat 632a and screw head and between the board/slat 632a and the main body of the piano key 630. It should be understood that pivoting adjustment of the damper lifter 632 is also possible, by pivoting the same about screw 636 to a desired position and then fixing it in place.
- any damper lifter will be interchangeable with a damper lifter of different length.
- the length of a damper lifter can be customized to compensate for variations in the depth of an action compartment in different pianos.
- a provision may be made for an adjustable block 740 in the back of the frame that will fit under the "dag blocks" 742 that are used to hold the action to the bed of the piano during transportation of the piano when the piano is placed on its side.
- the back rail 706 fits under the dag blocks 742 but here, the back rail 706 is made narrower and the new adjustable block 740 is made to fit under the dag block. This will compensate for differences in the location of the dag blocks 742.
- the adjustable block 740 may be attached via screws 744 to the back rail 706. The screws 744 themselves may be disposed in elongated slots 746 in the adjustable block 740 to allow for back-to-front adjustment of the adjustable block 740.
- the back rail 706 of a keyboard frame is accordingly made narrower and an adjustable block 740, such as that shown in Figs. 7a and 7b, is attached to it.
- the adjustable block 740 is intended to be disposed under a dag block 742.
- Figures 8a and 8b are top and closeup views, respectively, of the front rail 810 of a keyboard frame 802 (with intersecting slats 803) and other components.
- an adjustment arrangement 848 is provided for the adjustment of the location of glide pins 850 that normally fit into cheek blocks and establish the position of a keyboard front-to-back. This adjustment arrangement 848 will compensate for differences in the location of the fittings in the cheek blocks (not shown here) .
- adjustment arrangement 848 may preferably include an adjustment block 852 which supports glide pin 850, a spacer 854 (though more could conceivably be provided) and screws 856 which attach block 852 and spacer (s) 854 to front rail 810.
- glide pins serve to allow the keyboard to move side-to- side, via the soft pedal, by about 1/8 inch while helping to establish the front-to-back position of the keyboard frame through insertion into the aforementioned cheek blocks .
- Fig. 9 is a general perspective view of a piano action 988. Shown are piano keys 990 mounted on a frame 991, to which is mounted the piano's action stack 992.
- Figure 10 is a side view of a conventional arrangement including a sostenuto rod bracket.
- a sostenuto rod 1101 is mounted on a sostenuto rod bracket 1102, which itself is mounted onto an action stack bracket 1104.
- At least one embodiment of the present invention involves the use of a sostenuto rod bracket 1202 which is mounted to the frame 1206 of the action and not to the action stack bracket 1204.
- a sostenuto rod bracket 1202 which is mounted to the frame 1206 of the action and not to the action stack bracket 1204.
- Such a configuration is believed to greatly improve the ease of regulating the sostenuto rod 1201, which generally needs to be adjustable forwards and rearwards (i.e., left to right, and right to left, respectively, in the drawing) as well as upwards and downwards. (Typically, slots in a sostenuto rod bracket permit such adjustment.)
- the keyboard be insertable into the piano with the action stack removed. Since the sostenuto rod 1201 is not attached to the action stack bracket 1204, it will still be mounted to the action (at frame 1206) and will be freely adjustable while still affording unimpeded access to the mounting screws 1209 and 1203a of the sostenuto rod bracket 1202.
- sostenuto rod bracket 1202 (see Fig. 11) can be much more easily accessed, than in the case of a conventional arrangement (see Fig. 10, at 1102). It is believed that, as such, technicians or other individuals who need to access a sostenuto rod bracket will find that much more room can be made available for the purpose in connection with an inventive arrangement (e.g., as in Fig. 11) than in a conventional arrangement (e.g., as in Fig. 10) .
- action stack bracket 1204 may be easily removed (e.g.
- sostenuto rod bracket 1102 is attached to the action stack bracket 1104, thus requiring the technician to maneuver around the action stack bracket 1104 in order to access sostenuto rod bracket 1102.
- sostenuto rod bracket 1202 (see Fig. 12) can provide greater degrees of sostenuto rod adjustment, than in the case of a conventional arrangement (see Fig. 10, at 1102) .
- sostenuto rod bracket 1202 may preferably be mounted on action frame 1206 via a screw 1209 or other suitable mounting element, which itself will permit the bracket 1202 to be adjustable front-to-back (i.e., right to left and back in the drawing), e.g., via a slot provided in bracket 1202 in the vicinity of screw 1209.
- Sostenuto rod 1101 itself may be mountable in a suitable block 1203 which is attached to bracket 1202 via a suitable mounting element such as screw 1203a and itself may be adjustable vertically, e.g. via a slot provided in block 1203 for the purpose.
- a sostenuto rod bracket in accordance with at least one embodiment of the present invention, need not necessarily be shaped and configured in the manner shown in Fig. 11. Essentially any shape, orientation or positioning of a sostenuto rod bracket is conceivable in accordance with at least one embodiment of the present invention provided that the sostenuto rod bracket is connected to the action frame, and not to the action stack bracket, as shown.
- the action stack bracket 1204 could, in accordance with an embodiment of the present invention, preferably be shaped as shown.
- the action stack bracket 1204 could preferably be so configured as to accommodate angled key shanks such as may be found in a reduced-size keyboard, e.g. in reduced- size keyboards such as those described in U.S. Patent No. 5,847,301 to Steinbuhler.
- a front leg 1208 of the action stack bracket may pivot to accommodate angled key shanks. This front leg is preferably connected to the main body of the action stack bracket (e.g., via screw or other suitable mounting element 1205) at a position corresponding to a line defined by capstan screws on the key shanks .
- the pivotable front leg 1208 is shown in a frontward orientation, i.e., lying in a direction essentially parallel to the front-to-back dimension of the piano (which is the horizontal dimension in the drawing) .
- screw/mounting element 1205 lies below the aforementioned line defined by capstan screws on the key shanks.
- any suitable mechanism may be employed to afford the pivotable relationship of front leg 208 with respect to the rest of action stack bracket 204, e.g., via a screw or pivot connection at 1212.
- Action stack bracket may have an upper, forward groove 214 and lower, rearward groove 1216.
- Upper groove 214 may preferably be configured for accommodating a rail to which hammers are attached while lower groove 1216 may preferably be configured for accommodating a wooden rail that bears whippens .
- whippens, hammers and hammer shanks are known to those of ordinary skill in the art and will not be further discussed herein.
- four, five or six action stack brackets are provided in an action and together support 88 hammers corresponding to all of the piano keys.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Electrophonic Musical Instruments (AREA)
- Stringed Musical Instruments (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002331071A AU2002331071A1 (en) | 2001-08-10 | 2002-08-12 | Adjustments in piano actions |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US31167701P | 2001-08-10 | 2001-08-10 | |
US60/311,677 | 2001-08-10 | ||
US34966902P | 2002-01-16 | 2002-01-16 | |
US60/349,669 | 2002-01-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003015073A2 true WO2003015073A2 (en) | 2003-02-20 |
WO2003015073A3 WO2003015073A3 (en) | 2003-05-30 |
Family
ID=26978009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2002/025656 WO2003015073A2 (en) | 2001-08-10 | 2002-08-12 | Adjustments in piano actions |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU2002331071A1 (en) |
WO (1) | WO2003015073A2 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5042354A (en) * | 1987-10-02 | 1991-08-27 | Fandrich Design, Inc. | Action for upright piano |
US5196638A (en) * | 1990-06-26 | 1993-03-23 | Yamaha Corporation | Muting device of upright piano |
US5511454A (en) * | 1994-11-17 | 1996-04-30 | Steinway Musical Properties, Inc. | Piano escapement action |
US5911167A (en) * | 1994-11-17 | 1999-06-08 | Steinway, Inc. | Piano escapement action |
US6232537B1 (en) * | 2000-06-01 | 2001-05-15 | Baldwin Piano & Organ Company | Piano action with articulated jack |
-
2002
- 2002-08-12 AU AU2002331071A patent/AU2002331071A1/en not_active Abandoned
- 2002-08-12 WO PCT/US2002/025656 patent/WO2003015073A2/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5042354A (en) * | 1987-10-02 | 1991-08-27 | Fandrich Design, Inc. | Action for upright piano |
US5196638A (en) * | 1990-06-26 | 1993-03-23 | Yamaha Corporation | Muting device of upright piano |
US5511454A (en) * | 1994-11-17 | 1996-04-30 | Steinway Musical Properties, Inc. | Piano escapement action |
US5911167A (en) * | 1994-11-17 | 1999-06-08 | Steinway, Inc. | Piano escapement action |
US6232537B1 (en) * | 2000-06-01 | 2001-05-15 | Baldwin Piano & Organ Company | Piano action with articulated jack |
Also Published As
Publication number | Publication date |
---|---|
AU2002331071A1 (en) | 2003-02-24 |
WO2003015073A3 (en) | 2003-05-30 |
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