US2243834A

US2243834A - Keyboard for musical instruments

Info

Publication number: US2243834A
Application number: US328437A
Authority: US
Inventors: Bonilla Saturnino Tofe
Original assignee: Individual
Current assignee: Individual
Priority date: 1940-04-08
Filing date: 1940-04-08
Publication date: 1941-06-03
Anticipated expiration: 1958-06-03

Description

June 3, 1941. s TOFE BONILLA 2,243,834

KEYBOARD FOR MUSICAL INSTRUMENTS Filed. April 8, 1940 10 Sheets-Sheet l c c1 0 0115 F F1 6 611A Aifa c:

FIG. I.

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KEYBOARD FOR MUSICAL INSTRUMENTS Filed April 8, 1940 10 Sheets-Sheet 3 F'IG.5

it y INVENTOR. BY W020 M June 3, 1941- s. TOFE BONILLA KEYBOARD FOR MUSICAL INSTRUMENTS Filed April 8, 1940 10 Sheets-Sheet 4 INVENTOR.

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KEYBOARD FOR MUSICAL INSTRUMENTS Filed April 8, 1940 10 Sheets-Sheet 6 OQO @000 C) OO O 7 INVENTOR.

.-\ TTORNEYS June 3, 1941. s, TOFE BONlLLA 2,243,834

KEYBOARD FOR MUSICAL INSTRUMENTS Filed April 8, 1940 10 Sheets-Sheet 7 i 1 l i 1 l 'fm J% g INVENTOR. m0 0% BY WAT/0 4/ ATTORNEYS June 3, 1941. s. TOFE BONILLA KEYBOARD FOR MUSICAL INSTRUMENTS Filed April 8, 1940 10 Sheets-Sheet 8 FIG-M6.

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KEYBOARD FOR MUSICAL INSTRUMENTS Filed April 8, 1940 10 Sheets-Sheet 9 INVENTOR. Km

ATTORNEYS FIG-2,

izmww BY WZOOU M June 3, 194 s. TOFE BONILLA KEYBOARD FOR MUSICAL INSTRUMENTS Filed April 8, 1940 10 Sheets-Sheet 10 INVENTOR. Jmw %m m %ZM} ATIORNEYS Patented June 3, 1941 UNITED STATES PATENT OFFICE KEYBOARD FOR MUSICAL INSTRUMENTS Saturnino Tof Bonilla, New York, N. Y.

Application April 8, 1940, Serial No. 328,437

3 Claims.

My invention relates to a new and improved keyboard for musical instruments.

One of the objects of the invention is to provide a keyboard which can be built into a musical instrument or which can be applied to the keyboard of an instrument.

Another object of my invention is to provide improvements on the type of keyboard which is set forth in U. S. Patent No. 1,883,115, issued to me on October 18th, 1932.

Another object of the invention is to provide a keyboard which is particularly useful for playing organs, harmoniums, pianos, and other wind and percussion instruments.

Another object of the invention is to provide a keyboard whereby the actuation of a single key can play a plurality of notes in the same instrument, or a plurality of notes in different instruments. This makes it possible simultane- 01181)! to play two 01 more organs or pianos OI the like, or simultaneously to play two or more notes of the same organ or piano or the like.

Another object of the invention is to provide a keyboard having the notes arranged in sets or banks, so that it is possible to play octaves or single notes or chords with either hand.

Another object of my invention is to connect two or more pianos or other keyboard musical instruments by electrical connection or by pneumatic connection or other suitable connection, so that when the player actuates one of the regular keys in the keyboard of one instrument, he will simultaneously sound the same note in one or more additional instruments. Likewise the player, by depressing one of the regular keys in one instrument, can play an associated note in another instrument, so as to sound an octave or any suitable chord by playing two or more pianos or keyboard instruments simultaneously.

Another object of the invention is to provide a keyboard having any suitable number of rows of keys such as four rows or six rows or more. Each of said rows has six or more keys which follow each other in the chromatic scale. The six keys in each row can be provided with permanent or transferrable markings. I can also use more than six keys in each row, so as to transpose musical compositions from one key to another key.

Another object of the invention is to provide two similar keyboards, one for the right hand and one for the left hand, these keyboards being arranged so that the same musical notes are played by the same fingers of the left hand and of the right hand.

Another object of the invention is to provide a keyboard which can directly operate the musical instrument, or which can operate the same either electrically or pneumatically.

Other objects of my invention will be set forth in the following description and drawings which illustrate certain preferred embodiments, it being understood that the above statement of the objects of my invention is intended to generally explain the same without limiting it in any manner.

Fig. 1 illustrates a keyboard for wind instruments of the organ type. It is a diagrammatic top plan view.

Fig. 2 is a view along the line 55 of Fig. 1, showing how the new keyboard can be superposed upon the conventional keyboard of an orgen or the like.

Figs. 3 and 4 are detailed perspective views of the novel keyboard of Fig. 2.

Fig. 5 is a diagrammatic view of the improved control for both hands, for a musical instrument which is pneumatically operated.

Fig. 6 is a sectional View on the line 99 of Fig. 5.

Fig. 7 is a detailed sectional view, partially in elevation, showing the mechanism for controlling one of the pipes or reeds of an organ.

Fig. 8 shows a modification whereby two organs or pianos or the like can be simultaneously played. Fig. 8 also shows how two notes of the same organ or piano can be simultaneously played.

Fig. 9 shows a preferred control for playing two pianos or two organs or the like, or for simultaneously playing more than one note of the same piano or organ or the like, such as an octave, etc.

Figs. 10 and 11 are parts of a single View showing six sets or banks of keys. Each set or bank has thirty-six keys. From right to left, said sets make it possible to play octaves with the left hand, single notes with the left hand, chords with the left hand, thirds with the right hand, single notes with the right hand, and 0ctaves with the right hand.

Fig. 12 is a detail view along the line l'5-l5 of Fig. 10, showing how a single pipe of an organ is connected to a number of inlet pipes.

Fig. 13 shows a player organ or piano with electrical control, and provided with the improved keyboard.

Fig. 14 is a detail sectional View showing th operation of individual electrical switches by the individual keys.

Figs. and 16 illustrate how the operation of the keys of the electrical piano energize suitable electro-magnets. Fig. 15 shows the improved device embodied in the action of the piano. Fig. 16 shows the improved device applied to the regular keyboard of the piano.

Figs. 17 and 18 show the electrical control permanently applied to a standard keyboard, whereas Fig. 16 shows a removable unit.

The special keyiboard of Fig. 14 is used in Figs. 15 and 16. In Figs. 17 and 18 the regular keys of the piano are depressed.

Fig. 19 shows the regular keyboard of a piano, having special keys for playing octaves and thirds, by pneumatic control.

Fig. 20 shows the special keys of Fig. 19, operated by electrical control.

Fig. 21 shows a foot board control for playing combinations of notes or single notes. The combinations may be octaves.

Fig. 22 is a sectional View on the line Ziaof Fig. 21.

Fig. 23 is a plan view of a foot keyboard for a piano.

Fig. 24 is a section on line 2l2l of Fig. 23.

The system of pitch values which I use is described in U. S. Patent No. 1,883,115.

Fig. 3 shows the top board I and the base board 2 of the improved attachment. The base board 2 is close to or it abuts the regular or conventional keys 3 of the organ or other wind instrument, piano, etc. The base board 2 is suitably connected to the frame of the musical instrument, such as an organ, piano, etc. Each key 4 is connected to a bent

rod having legs

5, 6 and 8. Each bent rod passes through pivot loops 1 which are suitably and rigidly connected to the base board 2. Each leg 8 rests upon the top of a plunger 9. The plungers 9 are guided to move up and down in guide bores of the base board 2, as shown in Fig. 3. Therefore, when one of the keys 4 is depressed, one of the white keys 3 or one of the black keys is is also depressed by the respective plunger 9.

Fig. 1 shows diagrammatically how a keyboard which is made according to my invention, is utilized for operating keys of the musical instrument which are located to the left and to the right of said keyboard. Fig. 1 shows the legs 8 associated with supplemental levers 12 which are pivoted at M to brackets l5. This is shown in greater detail in Fig. 4, which shows that each leg 8 is provided with a lateral projection 55. which overlies the respective lever H. The plungers 9 abut the undersides of the levers I2. When a plunger 9 is depressed, it operates either a respective white key 3 or a respective black key l0, exactly as in Fig. 3. The regular spring action of the piano or organ restores the keys 3 and Hi to their normal positions. The heads of the respective keys 4 can have imprinted or otherwise displayed thereon the numbers or symbols which correspond to the respective notes, according to the aforesaid system of notation. Fig. 1 shows the conventional musical symbols of the notes which correspond to the respective keys 4. However these conventional musical symbols are not printed on the keys. Instead, the corresponding symbols, according to the aforesaid system, are printed on these notes.

The keys 4 are arranged in a left-hand series of 36 keys, and also in a coresponding right hand series. Each series has six rows, and each row has six keys 4. These rows are aligned with aaeacss each other, and the rows are located in successively higher planes, as shown in Fig. 6.

In the embodiment of Fig. 1, a single note is sounded when one of the keys 4 is depressed.

Figs. l-4 show an embodiment in which there is direct mechanical connection between each special key 4 and the key of the piano or organ, etc.

Fig. 5 shows a pneumatic action.

Fig. 5 shows one set of keys L to be played with the left hand, and another set of keys R to be played with the right hand. There are 36 keys in each set L and R. In this respect the special keyboards are the same as in the previous embodiment.

Fig. 5 shows the symbols which correspond to my said system of musical notation, printed or otherwise represented upon the heads of the notes 4. The keyboards oi the sets L and R are shown partially broken away, in order to illustrate the parts underneath the keys. Fig. 5 shows the perforated board ll. In the apparatus, said board is located in a vertical plane, and it is shown diagrammatically in the horizontal position in Fig. 5, merely for convenience. This board 1! forms the wall of an air chest or the like which is maintained under suction, so that a partial vacuum is maintained in said air chest. Flexible rubber pipes it lead from the perforations in said board ll. These pipes i9 have their inlets located in valve casings H, which are also shown in Fig. 6.

When a key 4 is depressed, it operates a respective valve-flap 2| which is pivotally mounted at 27-2 to lugs which project from the respective valve-casing 26. Each valve-flap it has a valve 733 connected thereto. thus turned clockwise, referring to Fig. 6, its valve 23 opens the port I M of the respective valve housing 2'6, so as to exert suction in the chamber of said valve housing 2!]. The conventional pneumatic player action which is thus operated is not shown. Return springs 23a normally hold the valve-flaps 2| in the position shown in Fig. 6, in which valves 23 close the ports iSa. The embodiment of Fig. 5 is also used for the playing of single notes by the indi vidual keys 4. Each valve 23 is a disc made of cork or other resilient material which is suitably connected by adhesive or the like to the respective valve-flap 2|. Each valve-housing 2D is provided with longitudinal and with transverse bores. This can be done by suitable drilling. Each pipe 19 is connected by a metal coupling pipe 24 to a port 19a of the respective valvecasing 28.

Fig. 9 shows the control of a plurality of suction pipes I?) by means of a single valve 23, so that by depressing one of the keys 4, two notes are simultaneously sounded. The notes may comprise an octave or other interval. Likewise the construction of Fig. 9 makes it possible to play two notes on two diiferent pianos or organs or the like. Therefore the construction of Fig. 9 can be used for playing the same note in two pianos or organs or the like, thus producing a greater volume of sound. Fig. 8 shows a plurality of flexible pipes !9 connected to a multiple rigid metal coupling 25, to which another pipe 19b be connected. These pipes I91) are connected to valve-casings 28. Therefore by depressing a single key 4, an octave can be played in one or two instruments, or the same notes of two instruments can be played, as previously stated. Each set of keys 4 is located in a casing C which When a valve-flap 2! is one or more ports 24a.

is shown in Fig. 6. The valve casings 23 are located in rows of six in said casing, each row being at a higher level than the preceding row. The valve casing-s 20 in each row are at the same level.

Figs, 10 and 11 show a keyboard for playing single notes with the left hand or with the right hand, and for playing chords or octaves with the right hand or with the left hand.

The keyboard 26 is used for playing octaves with the left hand. The keyboard 21 is used for playing single notes with the left hand. The keyboard 28 is used for playing chords with the left hand. The specific chords which are played by the keyboard which is illustrated in Fig. 10, are thirds. The keyboard 29 is used for playing thirds or other chords with the right hand. The keyboard 38 is used for playing single notes with the right hand. The keyboard 3| is used for playing octaves with the right hand.

The representations of these keyboards are partially broken away in Figs. 10 and 11. Each keyboard has 36 keys and the construction is the same as that of Fig. 6, for example. The keyboards of Fig. 10 and Fig. 11 operate by pneumatic means, similar to those shown in Figs. 5-9. The pipes I9 are indicated partially in full lines and partially in broken lines in Fig. 10. Said pipes are indicated wholly in full lines in Fig. 11.

In connection with the keyboard 26, Fig. 10

shows valve casings to each of which two inlet pipes are connected, as in Fig. 9. Therefore, by depressing a key 4 of the keyboard 26,

an octave is sounded either in the same piano or by playing the corresponding notes in two difierent pianos. The valve devices of the keyboard 21 are identical with those of Fig. 7. In the keyboard 28, each valve-casing 20 is provided with three inlet pipes, instead of the two inlet pipes of Fig. 9. Otherwise the construction is exactly the same. The valves associated with the keyboard 29 are identical with those of keyboard 28. Similarly keyboards 38 and 2'! and their valves are identical, and keyboards 3| and 28 and their valves are identical.

Fig. 12 shows the suction board II in which a series of ports are drilled. The outer end of each port or bore 32 is closed by a plug 33. One of the walls of board I1 is provided with transverse bores or ports 24a. Each bore 32 is provided with Each pipe I9 is connected to one of said ports 24 by means of a metal coupling 24. Each port 32 has a branch 32a. L-Shaped board I! by means of bolts 34c and 34d. The block 34a has a series of ports 34b. A pipe 34 is connected to each port 34b. Each port 34b registers with a branch port 32a. By shifting block 34a relative to board M, in a direction perpendicular to the plane of the paper in Fig. 12, the relation between the respective ports 34b and the branch ports 32a can be varied.

Each rubber pipe 34 is connected to a chest 35, which is maintained under air pressure.

Said air chest 35 has a series of cylinders, in which pistons 38 are respectively mounted. Each cylinder has a conventional valve which is controlled and operated by the suction in the respective pipe 34.

When a pipe 34 is subjected to suction through one or more of the associated pipes I9, the respective plunger 33 is raised so as to operate a member of the action of the musical instrument, thus playing the selected note. By shifting the A block 34 is adjustably clamped to the block 34a relative to the board I1, it is possible to change from one key to another.

Fig. 8 shows the couplings 25 of the pairs of pipes I9, located in bores of a board IIb, which is connected to the rear wall R of the casing by means of screws l'lb. These couplings 25 pass through the bores 25 of said rear wall R,

The remaining figures show an electrical control. Fig. 14 shows a key 4 abutting a resilient switch blade 31 which is held yieldingly by its resilience in the circuit-opening position shown in Fig. 14. Each switch blade 31 has a contact 38. The keys are arranged as in the previous embodiment.

Fig. 13 shows electro-magnet-s 48. As shown in Figs. 15 and 16, each electro-magnet is of a conventional type, and it has a core on which coils 4| and 42 are located. The adjacent ends of coils 4| and 42 are connected. One end of each coil 4| is connected to wire Pa, which is connected to one blade of plug P. The other end of each coil 4| is connected to a contact 38. The other terminal of plug P is connected by branch wire to the binding screws 31a of blades 31. a

Fig. 15 shows that the underside of each key 3 is provided with the usual metal armature 43. The key 3 is pivoted at 44 in the usual manner. When the electro-magnet 40 which is shown in Fig. 15 is energized, the key 3 is turned clockwise, so that its head 45 operates the conventional hammer or striker 45 of a piano, which is pivoted at 41. Fig. 15 shows a conventional guide 48 for guiding the turning movement of the key 3.

Fig. 15 shows the pivot 44 mounted on a base 49. The armature 43 can be located at the top of a key 3, in which case the position of the electro-magnet 40 would be correspondingly reversed, as shown in broken lines in Fig. 15.

Fig. 16 shows the electro-magnet 40 associated with an armature 58 which is pivotally mounted at 5| to a lug of the base member 52. When the electro-magnet 40 is energized, the lever 53 is turned clockwise, thus actuating the hammer or striker 46. Therefore, in the embodiments of Figs. 15 and 16, the piano can be played by hand or by electro-magnetic means. In the embodiment of Fig. 16 the electrical action directly actuates the hammers 46. Fig. 17 shows a modified action. The key 3 is provided with a hook 53. When the key 3 is depressed, the hook 53 turns a lever 54, which is pivoted at 55 to a lug of a base member 56. The base member 56 is connected to the upstanding board 51. The lever 53 has a valve 58 of the type previously described. A pair of suction pipes l9 are connected to the valve chest 56. Hence by depressing a single key 3, it is possible to play octaves in the same piano and also to play an octave by sounding one note of one piano or organ and by sounding a companion note on another piano.

Fig. 18 shows the key 3 having the aforesaid hook 53. This actuates a lever 58, which is pivoted at 60 to a lug of the base member 6|, which is connected to the upstanding board 62. The lever 59 actuates the resilient switch blade 63, which simultaneously touches a pair of contacts 84, when the key 3 is depressed. The depression of a single key can therefore play octaves or chords in one organ or piano, or by sounding the notes of diiferent pianos or organs. Fig. IB shows a modified pneumatic control which can be placed on top of the regular keyboard of the organ or piano. The upstanding board or member is connected to the frame of the instrument in any suitable manner, as in the other embodiments.

Fig. 19 shows lever 65 and El, respectively pivoted at '53 and E9 to lugs of the members Ella, which are suitably connected to the frame of the instrument. The levers 55 and El are arranged in respective series, each said series corresponding to the white keys 3. Each said series of said levers or keys i6 and 57 has black keys or levers and "t l, which correspond in each series to the black keys of the piano. Springs l2 hold the white and black keys of each set and ti, normally in. the horizontal position shown in Fig. 2. Each of the levers ill, "iii, H has a valve Which controls a plurality of inlet pipes 63. Therefore, in addition to playing the piano in the regular way, octaves can be played in the same piano or in two different pianos by the keys and 79, and thirds can be played in the same piano or in different pianos by the keys ES and H.

Figs. 21 and 22 show the improvements applied to the footboard of an organ or the like. The keys a ar depressed by the feet of the operator. These keys are slidably guided a base board Each of one series of the keys is operates a respective lever l l, which is held 'ieldingly in the normal position shown in Fig. 22, by a spring l5. Each lever T6 is piv-- oted at 75 to a respective lug of the base board 1'3. Each lever controls a single suction pipe Each lever Ma controls a of suction pipes The levers are respectively actuated by a second series of the keys 5.. The keys are also marked with the musical symbols of my im oved system. The pneumatic control shown in rig. 22 may be replaced by an electrical control. The levers can thus play octaves in the same organ or in two different organs. The levers l lo are pivoted at its, and they are yieldin ly held in the position shown in Fig. 22 by springs The invention applies to any key-operated musical instrument, and particularly to instruments which have keys which correspond to the notes of a chromatic scale.

Fig. 1 illustrates a keyboard instrument which can be played by the regular keys 3 and ill, or by the supplemental keys l. Said keys l have extensions which are located and adapted to operate members of the action of the musical instrument, which are spaced laterally from said keys '5.

Referring to Figs. and 11, the connections of the keys are arranged so that the correspond ing keys 4 in the associated left-hand and righthand keyboards correspond to each other and to exactly the same musical notes. For example when the key X in keyboard 2? is operated, this will sound exactly the same note as when the key X0. in keyboard is actuated. Likewise when the key Y of keyboard 2'? is actuated, this will sound exactly the same note as the key To in keyboard Therefore the keys in each row of each left-hand k yboard correspond to the keys of the same row in the corresponding right-hand keyboard. In order to go from a lower note to a higher note the hands are moved in opposite directions from the common line Al3 or A-B. For example, the notes which correspond to the keys X and Y re next to each other in a chromatic scale, and the note of the key Y inunedi atcly follows and is higher than the ke, X. In

the same the note corresponding to the key Ya follows and it is immediately next to the note of the key Xa, in the same chromatic scale. This makes it extremely convenientto operate these keyboards.

Referring to Figs. 23 and Z lQthe white keys 89 are pivotally connected to the extension 8| of base at The black keys 33 are higher than be white keys 8d and they are pivotally connected to the extension 8! of base Sill at 84. The pins abut the keys Said pins also abut levers 895 which are pivotally connected at 8'! t0 lugs 33 which are rigidly connected to the board 82 of the base Springs a yieldingly hold the levers 86 in the position shown in Fig. 24. Each lever 86 has a resilient valve member 9| which closes the port of a valve casing Q2.

The black keys respectively abut pins 93, Whose lower ends abut levers M, which are pivotally connected to lugs 23 of the board 89. The levers 9d are provided with valves 91a, which correspond to the valves Each valve-member 95 controls the port of a valve-casing 96. The valve-casings are provided with respective suction pipes and the valve-casings .36 are providcd with respective suction pipes a. The pins 93 and are slidably mounted in respective vertical boards of the bore 89. Each white key is provided with a guide 83a, for guiding the to hing movement of said key, and each black key is provided with a corresponding guide These guides are connected to the board 89. The keys or levers tit and 63 operated by the feet of the so that it is possible to play the bass notes of a or organ or other keyoperated musical instrument.

I claim:

1. A musical instrument comprising a frame and an action which includes a plurality of members and a series of individually movable exposed Inain keys connected respectively to said members and respectively operating said members, said main being located in a longitudinal series, a baseboard overlying said keys and connected to said frame, levers pivotally connected to said baseboard, movable supplemental keys located above said levers, said supplemental keys being respectively connected to said levers and respectively operating said levers, plungers slidably mounted in said baseboard, each plunger overlying a respective main key and operating said respective main key when said plunger is depressed, each l ver being associated with a respectiveplunger to operate said plunger, each lever extending longitudinally from the respective scipplemental key and operating a plunger which is longitudinally spaced from the respective supplemental key.

2. A musical instrument cc-r prising a frame and an action which i udes a plurality of memand parallel main keys connected respectively to said members and respectively operating said members, said main keys being located in a longitudinal series, a baseboard overlying said keys and connected to said frame, levers pivotally connected to baseboard, movable supplemental keys located above said levers, said supplemental being respectively connected to said levers and respectivelyoperating said levers, plungers slidably mounted in said baseboard, each plunger overlying a respective main key and operating said respective main key when said plunger is depressed, each lever being associated with a respective plunger to operate aid plunger, each lever extending longitudinally from the respec tive supplemental key o ating a plunger which is longitudiispaced from the respective supplemental key, some of said supplemental key being arranged ina left-hand series, the other supplemental keys being arranged in a right-hand series, each said series having a plurality of successive rows which are located successively behind the front row, each row being higher than the preceding row.

3. A musical instrument comprising a frame and an action which includes a plurality of member and a series of individually movable exposed and parallel main keys connected respectively to said members and respectively operating said members to sound individual notes, said main keys being located in a longitudinal series, a baseboard overlying said keys and connected to said frame, plunger slidably mounted in said baseboard and overlying respective main keys so that a main key is depressed when the respective plunger is depressed, a main lever overlying each plunger and pivotally connected to said baseboard, each main lever extending in front of the respective plunger, each main lever having a supplemental lever associated therewith, each supplemental lever having a first leg which is substantially parallel to said main keys and a second leg which is transverse to said main keys, and a third leg which is substantially parallel to said main keys, means pivotally connecting the respective second legs to the baseboard, each third leg being connected to a respective supplemental key, each first leg having an endportion which overlies the respective main lever, whereby each supplemental key operates a longitudinally spaced main key, said supplemental keys being arranged in succeeding rows, each said row being located behind the preceding row.

SATURNINO TOFE BONILLA.