US3910152A - Stringed musical instrument having an attachment for changing musical key - Google Patents

Stringed musical instrument having an attachment for changing musical key Download PDF

Info

Publication number
US3910152A
US3910152A US469593A US46959374A US3910152A US 3910152 A US3910152 A US 3910152A US 469593 A US469593 A US 469593A US 46959374 A US46959374 A US 46959374A US 3910152 A US3910152 A US 3910152A
Authority
US
United States
Prior art keywords
sounding
bridge
key
musical instrument
strings
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
Application number
US469593A
Inventor
Yoshinari Kusakawa
Original Assignee
Yoshinari Kusakawa
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yoshinari Kusakawa filed Critical Yoshinari Kusakawa
Priority to US469593A priority Critical patent/US3910152A/en
Application granted granted Critical
Publication of US3910152A publication Critical patent/US3910152A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10DSTRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
    • G10D3/00Details of, or accessories for, stringed musical instruments, e.g. slide-bars
    • G10D3/14Tuning devices, e.g. pegs, pins, friction discs or worm gears
    • G10D3/147Devices for altering the string tension during playing

Abstract

A stringed musical instrument employes a head portion, a sounding body, an interconnecting neck portion, a set of strings extending from the head portion along the neck portion to the body, a manually adjustable bridge device slidably mounted on the sounding body and over the extending strings, and base means on the bridge device provided with tongue and groove bearing means for making the adjustment, whereby the player of the musical instrument can selectively change the musical key to the desired pitch of the key without interrupting his playing thereof. The tongue and groove bearing means is either a rail-notch or projection-channel arrangement. In a modification, the bridge device is actuated by foot-pedals.

Description

United States Patent [191 Kusakawa Oct. 7, 1975 {76] Inventor: Yoshinari Kusakawa, 1-34-23,

Kamiikedai, Ota-ku, Tokyo, Japan [22] Filed: May 13, 1974 [21] Appl. No.: 469,593

3,181,409 5/1965 Burns et al 84/307 X Primary Examiner-Stephen J. Tomsky Assistant Examiner-John F. Gonzales [5 7 ABSTRACT A stringed musical instrument employes a head portion, a sounding body, an interconnecting neck portion, a set of strings extending from the head portion along the neck portion to the body, a manually adjustable bridge device slidably mounted on the sounding body and over the extending strings, and base means on the bridge device provided with tongue and groove bearing means for making the adjustment, whereby the player of the musical instrument can selectively change the musical key to the desired pitch of the key without interrupting his playing thereof. The tongue and groove bearing means is either a rail-notch or projection-channel arrangement. In a modification, the bridge device is actuated by foot-pedals.

2 Claims, Drawing Figures STRINGED MUSICAL INSTRUMENT HAVING AN ATTACHMENT FOR CHANGING MUSICAL KEY BACKGROUND OF THE INVENTION The field of the invention generally encompasses any stringed instrument having a fingerboard. The present invention specifically describes a stringed instrument in which a player can selectively change the musical key to the desired pitch of the key without interrupting his playing thereof.

Conventionally, a musical instrument such as a guitar and other fretted type instruments has an attachment such as a capotasto. That is, a capotasto which is a bar or movable nut, must be attached to the fingerboard of the instrument to uniformly raise the pitch of all the strings. The capotasto is attached to the neck portion of the instrument before playing the instrument and also when the player wishes to change the key or scale. But a capotasto or the like cannot be freely attached during the playing of the instrument. For example, the player may desire to raise one sharp or lower one flat during his playing, but such actions would be prohibited. Therefore, the player must master certain fingering formations based on other keys when he wishes to change the key during his playing. The capotasto enables a player to change the key with the same fingering technique, but on another fret and also involves an interruption of his playing.

Therefore, under the present prior art, the beginner player must wait the changing of the key during his playing until he has mastered the difficult fingering technique.

SUMMARY OF THE INVENTION According to the concept of the present invention, there is provided a stringed musical instrument having an adjustable bridge device whereby a player may easily and quickly change the key during his playing of the instrument and thus avoid any interruptionof his playing.

Accordingly, it is object of the present invention to provide a bridge device for a stringed musical instrument whereby said instrument may be played easily in every key with the same fingering arrangement on the same fret positions.

A further object of the present invention is to provide a bridge device for a stringed musical instrument whereby the player may quickly change the key during his playing and thus without an interruption thereof by merely manipulating the bridge device with a manual pulling or pushing motion or a foot-working motion.

It is a further object of this invention to provide a bridge device for a stringed musical instrument which is simple and inexpensive to manufacture, attractive in appearance, practical and efficient to a high degree in use.

In essence. the present invention relates to a stringed musical instrument and comprises a head portion, a sounding body, an interconnecting neck portion, a set of strings extending from the head portion along the neck portion to the body, a manually adjustable bridge device slidably mounted on the sounding body and under the extending strings, the bridge device includes base members for providing the adjustment thereto, the base means employing elongated tongue and groove bearing means engaging each other in a slidable manner. the tongue and groove bearing means being either a rail and notch arrangement or a projection and channel arrangement, whereby the player of the musical instrument can selectively change the musical key to the desired pitch of the key without interrupting his playing thereof. In a further embodiment of the invention, the bridge device is actuated by foot pedals.

Many other advantages, features and additional objects of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying drawing in which preferred structural embodiments incorporating the principles of the present invention are shown by way of illustrative examples.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING FIG. 1 is a plan view of a guitar fitted with a bridge device in accordance with the present invention;

FIG. 2 is a cross sectional view of FIG. 1;

FIG. 3 is a cross sectional view of the bridge device having a notch and rail arrangement;

FIG. 4 is a cross sectional view of the bridge having a projection and channel arrangement; and

FIG. 5 is a cross sectional view of a guitar fitted with a foot-actuated bridge device.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The principles of the present invention are particularly useful when embodied in a stringed musical instrument such as a guitar illustrated in FIGS. 1 and 2, generally indicated by the numeral 10. The guitar 10 is a standard model and includes a body 11 and a head 12. The guitar 10 also includes a neck 13 which interconnects the head 12 and the sounding body 11. A set of six strings 14 extend from the head 12 to the sounding body 11. The strings 14 are anchored on the head 12 by the usual adjustable pegs 15. As is well known in the art, the strings 14 may be tuned individually by rotatably adjusting the corresponding pegs 15. The strings are anchored at their other ends to a tail piece 16 which is secured to the base of the sounding body 11 of the guitar 10.

A rectangular box shaped bridge device 17 is located between the tail piece 16 and a sounding port 18. The bridge device 17 includes an adjustable base means 19, as illustrated broadly in FIGS. 1 and 2. The adjustable base means 19 is seated on the top surface of the sounding body II. The adjustable base means 19 is preferably made in either of two structural forms.

One form as seen in FIG. 3, has the bottom portion of bridge device 17 provided with a pair of elongated notches 20. The elongated notches 20 are parallel to each other and to the longitudinal axis of the neck 13. A pair of elongated upstanding rails 21 is fixed to the top surface of the sounding body 11. Each of the upstanding rails 21 has the desired configuration for engaging the corresponding notches 20 and for sliding therein.

Another form of adjustable base means 19 constitutes a pair of elongated depending projections 22 slidably mounted in a pair of elongated channels 23, which projection-channel arrangement is similar to the above described notch-rail arrangement.

It is to be noted that the bearing surfaces of both the notch-rail arrangement and the projection-channel arrangement of FIG. 4 can be either coated with an abrasive free material or made of a metallic or plastic material having a smooth finish to enable the bridge device 17 to be readily moved by the player.

Both the rails 21 and channels 23 may be marked with measured markings corresponding to each keylike fret whereby the player may easily read it and assume his desired key. And thus, he can freely slide the bridge device 17 to the desired position; for example, even for a position for a quarter tone.

Accordingly, it can be readily appreciated that after a player has played one chorus of a tune, for example, in the C major key, he can readily change the key into C sharp major, and then in the third chorus to D major key by merely pushing the bridge device 17 to the left side of the sounding body 11. Since the lengths of the strings 14 change following the sliding movement of the bridge device 17, the oscillating frequency of the strings 14 are also changed thereby sounding out different pitch of tone. Therefore, the player can easily and quickly change the key during his playing without any interruption of his playing and with the same fingering formation on the same initially selected fret on the neck 13.

ln the embodiment illustrated in FIG. 5, a bridge device 17 is made to be slidably mounted on either the notch-rail arrangement of FIG. 3 or the projectionchannel arrangement of FIG. 4. Further, the ends of the bridge device 17 are suitably affixed with wires 25, 26. The wires 25, 26 are structurally arranged as illustrated in FIG. to extend through the sounding body 11 and to exit respectively through tubular openings 27, 28 in the bottom of the sounding body 11. The wires 25, 26 terminate respectively in suitably positioned foot pedals 29, 30. Both the surfaces of the tubular passageways 27, 28, likewise, may be either coated with an abrasive free material or made of a metallic or plastic material having a smooth finish to enable wires 25, 26 to move readily therethrough.

Accordingly, for example, when the player pushes his foot on the pedal 29, the bridge device 17 is caused to slide on the rail-notch or projection-channel arrangement to the left sidethereby causing the strings 14 to become shorter and thus raising the key into a sharp, while with a push on the foot pedal 30, the key is lowered to fiat key.

It is to be noted that the embodiment in FIG. 5 is applicable to a Japanese Koto which is similar to a Hawaiian Steel Guitar, although there are more strings.

Having thus described the present invention in terms of its preferred specific embodiments, it is understood that the present invention is not limited thereto, but that such changes, modifications, and variations as are embraced by the spirit and scope of the appended claims, are contemplated as within the purview of the present invention.

What is claimed is:

l. A stringed musical instrument comprising: a head portion, a sounding body, and an interconnecting neck portion, a set of strings extending from said head portion along said neck portion to said body, a manually adjustable bridge device slidably mounted on said sounding body and under said extending strings, said bridge device including base means for providing said adjustment hereto, said base means and said sounding body employing elongated tongue and groove bearing means engaging each other in a slidable manner and wires attached to spaced apart portions of said bridge device, each of said wires passing through a separate tubular bearing passageway in said sounding body and each terminating in a separate movable foot pedal means whereby when a foot pedal is depressed it will move the attached wire, which will in turn slide said bridge device with respect to said sounding body, whereby the player of the musical instrument can selecti ely change the musical key to the desired pitch of the key without interrupting his playing thereof.

2. A stringed musical instrument according to claim 1 wherein the bearing surfaces of said tubular passageways in said sounding body have a smooth sliding finish.

Claims (2)

1. A stringed musical instrument comprising: a head portion, a sounding body, and an interconnecting neck portion, a set of strings extending from said head portion along said neck portion to said body, a manually adjustable bridge device slidably mounted on said sounding body and under said extending strings, said bridge device including base means for providing said adjustment hereto, said base means and said sounding body employing elongated tongue and groove bearing means engaging each other in a slidable manner and wires attached to spaced apart portions of said bridge device, each of said wires passing through a separate tubular bearing passageway in said sounding body and each terminating in a separate movable foot pedal means whereby when a foot pedal is depressed it will move the attached wire, which will in turn slide said bridge device with respect to said sounding body, whereby the player of the musical instrument can selectively change the musical key to the desired pitch of the key without interrupting his playing thereof.
2. A stringed musical instrument according to claim 1 wherein the bearing surfaces of said tubular passageways in said sounding body have a smooth sliding finish.
US469593A 1974-05-13 1974-05-13 Stringed musical instrument having an attachment for changing musical key Expired - Lifetime US3910152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US469593A US3910152A (en) 1974-05-13 1974-05-13 Stringed musical instrument having an attachment for changing musical key

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US469593A US3910152A (en) 1974-05-13 1974-05-13 Stringed musical instrument having an attachment for changing musical key

Publications (1)

Publication Number Publication Date
US3910152A true US3910152A (en) 1975-10-07

Family

ID=23864362

Family Applications (1)

Application Number Title Priority Date Filing Date
US469593A Expired - Lifetime US3910152A (en) 1974-05-13 1974-05-13 Stringed musical instrument having an attachment for changing musical key

Country Status (1)

Country Link
US (1) US3910152A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4343220A (en) * 1981-04-13 1982-08-10 Lundquist Eric G Vibrato attachment for stringed instruments
US4481855A (en) * 1982-03-09 1984-11-13 Bozung Richard E Zither-like instruments
US4658693A (en) * 1986-04-25 1987-04-21 The Music People, Inc. Rear operated control device for guitar
US4852448A (en) * 1988-04-29 1989-08-01 Hennessey James R Bilateral tremolo apparatus
WO1996024126A1 (en) * 1995-02-04 1996-08-08 Douglas Mackenzie Smith Apparatus for altering the pitch of stringed instruments
US5847298A (en) * 1997-03-04 1998-12-08 Adams; Brian T. Supplemental fret attachment for musical stringed instrument
US6297434B1 (en) * 1999-08-11 2001-10-02 Jose Mario Martello Wedge adjustable bridge for stringed instruments
WO2002054378A1 (en) * 2000-12-28 2002-07-11 Gregory Michael Orme A device for stringed instruments
US20050126373A1 (en) * 1998-05-15 2005-06-16 Ludwig Lester F. Musical instrument lighting for visual performance effects
EP3021316A1 (en) * 2014-11-14 2016-05-18 Jean-Pierre Limousin Mobile bridge for instrument or apparatus with one or more strings
US10186238B2 (en) * 2016-08-22 2019-01-22 Ciari Guitars, Inc. Travel guitar
US10810974B2 (en) * 2016-04-13 2020-10-20 Ciari Guitars, Inc. Foldable stringed instrument

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US134679A (en) * 1873-01-07 Improvement in guitars
US490528A (en) * 1893-01-24 Territory
US2491788A (en) * 1946-02-25 1949-12-20 Valco Mfg Co Bridge for fretted stringed musical instruments
US2802386A (en) * 1954-09-07 1957-08-13 Laurel R Crosby Stringed musical instrument with movable bridge
US3174380A (en) * 1963-09-13 1965-03-23 Jack C Cookerly Stringed instrument bridge and anchoring means
US3181409A (en) * 1961-12-06 1965-05-04 Ormston Burns Ltd Bridges for stringed instruments such as for guitars

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US134679A (en) * 1873-01-07 Improvement in guitars
US490528A (en) * 1893-01-24 Territory
US2491788A (en) * 1946-02-25 1949-12-20 Valco Mfg Co Bridge for fretted stringed musical instruments
US2802386A (en) * 1954-09-07 1957-08-13 Laurel R Crosby Stringed musical instrument with movable bridge
US3181409A (en) * 1961-12-06 1965-05-04 Ormston Burns Ltd Bridges for stringed instruments such as for guitars
US3174380A (en) * 1963-09-13 1965-03-23 Jack C Cookerly Stringed instrument bridge and anchoring means

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4343220A (en) * 1981-04-13 1982-08-10 Lundquist Eric G Vibrato attachment for stringed instruments
US4481855A (en) * 1982-03-09 1984-11-13 Bozung Richard E Zither-like instruments
US4658693A (en) * 1986-04-25 1987-04-21 The Music People, Inc. Rear operated control device for guitar
US4852448A (en) * 1988-04-29 1989-08-01 Hennessey James R Bilateral tremolo apparatus
WO1996024126A1 (en) * 1995-02-04 1996-08-08 Douglas Mackenzie Smith Apparatus for altering the pitch of stringed instruments
US5847298A (en) * 1997-03-04 1998-12-08 Adams; Brian T. Supplemental fret attachment for musical stringed instrument
US9304677B2 (en) 1998-05-15 2016-04-05 Advanced Touchscreen And Gestures Technologies, Llc Touch screen apparatus for recognizing a touch gesture
US20050126373A1 (en) * 1998-05-15 2005-06-16 Ludwig Lester F. Musical instrument lighting for visual performance effects
US6297434B1 (en) * 1999-08-11 2001-10-02 Jose Mario Martello Wedge adjustable bridge for stringed instruments
WO2002054378A1 (en) * 2000-12-28 2002-07-11 Gregory Michael Orme A device for stringed instruments
EP3021316A1 (en) * 2014-11-14 2016-05-18 Jean-Pierre Limousin Mobile bridge for instrument or apparatus with one or more strings
FR3028654A1 (en) * 2014-11-14 2016-05-20 Elyhdia Sarl Mobile horse for instrument or apparatus with one or more ropes
US10810974B2 (en) * 2016-04-13 2020-10-20 Ciari Guitars, Inc. Foldable stringed instrument
US10186238B2 (en) * 2016-08-22 2019-01-22 Ciari Guitars, Inc. Travel guitar

Similar Documents

Publication Publication Date Title
Harding The piano-forte
EP1325492B1 (en) Keys for musical instruments and musical methods
US4183279A (en) Variable chord-forming capo
US6111179A (en) Electronic musical instrument having guitar-like chord selection and keyboard note selection
US4704936A (en) Tremolo with lever angle control
Del Mar Anatomy of the Orchestra
US3237502A (en) Stringed musical instrument
US5750910A (en) Apparatus and method for tuning guitars
US4291606A (en) Musical string instrument
Stowell et al. The Cambridge companion to the cello
US5191159A (en) Electrical stringed musical instrument
US5097737A (en) Tuner system for a stringed instrument
US7329808B2 (en) String bending device for stringed musical instruments
US4210055A (en) Adjustable ligature for musical instrument
US5481956A (en) Apparatus and method of tuning guitars and the like
US4240319A (en) Electric guitars
US3854368A (en) Finger mountable guitar string contact device
EP0824748A1 (en) Stringless twitch fret instrument
US2973682A (en) String tension controlling means for lute-type instrument
JP3703393B2 (en) Stringed instrument and method of manufacturing a stringed instrument
US4361068A (en) Bridge device for stringed instrument
JP4753883B2 (en) Adjustable tremolo bridge
CA2034008A1 (en) Variable chord-forming capotasto
US4054079A (en) Keyboard and notation system
US2257995A (en) Musical instrument