The present disclosure relates to arrangements, features, techniques and methods for securing strings of a stringed instrument, such as an acoustic guitar. The methods and apparatus can also be used for tuning the strings of acoustic guitars, if desired.
Stringed acoustic instruments typically include a pin-in-hole configuration for securing a ball end of the string to a bridge. An example stringed acoustic instrument, a guitar 2, is shown in
As shown in
The sizes of the holes in stringed acoustic instruments are non-uniform. Additionally, different shapes and sizes of pins are used to form an interference fit with the hole and secure the ball end of the string. In a typical acoustic stringed instrument, string tension can only be adjusted using the keys.
Techniques and apparatus disclosed herein relate to securing strings of stringed instruments. In addition, techniques and apparatus disclosed herein relate to selectively adjusting string tension.
In general, apparatus for securing strings of stringed instruments include a base arrangement, a string anchor seat assembly, and an actuator arrangement. The base arrangement secures to stringed instruments, typically at a bridge. A string anchor seat assembly pivotally mounts to a base arrangement. A seat arrangement provided by string anchor seat assembly receives an anchor end of string. The base assembly defines a string channel through which string passes from the seat arrangement to a saddle positioned on the bridge.
Tension adjustment of a string is provided by adjusting an actuator arrangement that is in communication with the string anchor seat assembly. In use, as the actuator arrangement is operated, the string anchor seat assembly pivots thereby adjusting string tension.
Methods and techniques disclosed include securing a string to a stringed instrument. These methods and techniques include positioning an anchor end of string in an anchor assembly. Then the non-anchor end of the string is secured at a headstock of the stringed instrument. Thereafter, string tension can be adjusted using components of the anchor assembly.
The details of one or more embodiments are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of these embodiments will be apparent from the description, drawings, and claims. Moreover, it is to be understood that both the foregoing summary of the disclosure and the following detailed description are exemplary and intended to provide further explanation without limiting the scope of the disclosure.
The following figures, which form a part of this application, are illustrative of described technology and are not meant to limit the scope of the claims in any manner.
Various embodiments of the present invention will be described in detail with reference to the drawings, wherein like reference numerals represent like parts and assemblies throughout the several views. The features described herein are examples of implementations of certain broad, inventive aspects which underlie the disclosure.
As briefly described above, embodiments of the present invention are directed to securing a string to a stringed instrument. Existing securing devices, such as the pin-in-hole configuration discussed above, provide string tension adjustment capability in only one location: at the headstock. String anchors contemplated by the instant disclosure advantageously provide tuning capabilities at the bridge. When a capo is used on a fretboard of a stringed instrument, the strings cannot be tuned using the tuners at the headstock. By providing tuning capability at the bridge, the strings can be tuned when a capo is placed on the fretboard.
Additionally, providing tuning capabilities at the bridge can be convenient depending upon the circumstances, for example, when tuning. Rather than reaching across the body with the dominant hand to modify the tuning at the headstock, the person tuning the instrument can use the dominant hand near where it normally is—close to the bridge. Additionally, if the non-dominant hand is being used to play a note for tuning purposes, that hand can stay in position rather than being used to adjust the tuning key at the headstock. Generally, the arrangements, features, techniques and methods contemplated below are directed to avoid the issues mentioned above with existing securing devices and provide additional functionality at the string anchor.
Typically, string instrument 102 is a hand-held acoustic instrument. In some instances, string instrument 102 is an acoustic guitar. In those instances, the acoustic guitar typically includes six strings and usual components such as a neck connecting the body and the headstock, frets, sound hole, and bridge holes. String anchor 104 can also be used with acoustic guitars having more or fewer than six strings. In other instances, string instrument 102 can be other hand-held acoustic instruments, such as any one of: viola, violin, sitar, ukulele, mandolin, or lute.
Tuning pin 114 is any tuning pin known in the art. Guitar string 106 can be made of a single material, such as, for example, steel, nylon, gut, or brass. Alternatively, guitar string 106 can be a wound string comprising a core and overwinding. Guitar string 106 has an anchor end, hereinafter referred to as the “ball end” of string 106. The ball end can be any polyhedra known in the art, such as, cylinder, sphere, hemisphere, prism, pyramid, and variations or combinations of polyhedra.
Typically, string anchor 104 is retrofitted onto existing string instruments 102. As an alternative, string anchor 104 is used in the construction of a new string instrument 102. Examples of string anchor 104 are shown and described in more detail below with reference to
String anchors 204 are positioned on bridge 218, which is secured to body 208. Six strings 206 are secured on one end by string anchors 204 and pass over saddle 220. Strings 206 are secured on the opposite end at the headstock, not shown.
As shown, string anchors 204 are sized such that when installed onto bridge 218 a marginal space exists between adjacent sides of string anchors 204. As the reader will appreciate, manufacturing variations in the spacing between bridge pin holes may cause some string anchors 204 to be closer to adjacent string anchors 204 when installed.
When string anchor 204 is installed, a length of string anchor 204 is oriented along the direction of strings 206. A general scale of the size of string anchor 204 is evident from
A portion of guitar body 208 is removed in
String anchor 300 includes base arrangement 302, string anchor seat arrangement 304 and actuator arrangement 306. String anchor seat arrangement 304 is pivotally mounted on base arrangement 302. Actuator arrangement 306 is coupled to base arrangement 302.
Base arrangement 302 couples to the stringed instrument and provides mount 318 for string anchor seat arrangement 304. Mount 318 defines pivot axis PA. As shown, mount 318 is cylindrical but other shapes are contemplated. Mount 318 is positioned at or near an end of base arrangement 302 opposite the end with string channel exit 338.
Pivot axis PA is oriented such that movement of string anchor seat arrangement 304 about pivot axis PA either increases or decreases tension of the string. This orientation of pivot axis PA is generally orthogonal to a length of the stringed instrument's headstock.
Base arrangement 302 also includes string instrument mount 308 that mounts the base arrangement 302 to the stringed instrument when positioned for use. String instrument mount 308 passes into a string hole or aperture of the stringed instrument. Preferably, string instrument mount 308 is a truncated cone to enable a fit in varying string hole sizes. Alternatively, string instrument mount 308 is cylindrical. Still other shapes of string instrument mount 308 are possible.
As shown, string instrument mount 308 receives securing peg 310. That is, string instrument mount 308 defines an inner cavity sized to receive securing peg 310. Preferably, at least a portion of securing peg 310 and inner cavity are threaded, thereby enabling their coupling. An adhesive can be used to couple securing peg 310 and string instrument mount 308, instead of or in addition to threaded coupling. Alternatively, string instrument mount 308 and securing peg 310 are continuous.
Base arrangement 302 defines string channel 314. String channel 314 provides a channel through base arrangement 302 for guitar string to pass between anchor seat arrangement 304 and the headstock of the stringed instrument. String channel 314 has string channel axis CA generally parallel to a length of the stringed instrument's headstock.
Base arrangement 302 also defines actuator arrangement receiving cavity 322. Actuator arrangement receiving cavity 322 receives components of actuator arrangement 306. Actuator arrangement receiving cavity 322 has top window 324 and side windows 326. Optionally, side windows 326 are sealed off after positioning actuator arrangement 306 within actuator arrangement receiving cavity 322.
Referring to
Preferably, upper surface 340 slopes downward from string channel entry 336 to string channel exit 338. That is, when string anchor 300 is mounted to stringed instrument, upper surface 340 slopes downward toward the body and the headstock. As shown, lower surface 342 is planar and not sloping—it is oblique to upper surface 340. Preferably, a cross sectional area of string channel entry 336 is larger than a cross sectional area of string channel exit 338. Alternatively, both lower 342 and upper 340 surfaces are parallel and the cross sectional area of string channel entry 336 and string channel exit 338 are equal.
Preferably, upper surface 340 slopes downward at an angle between 4-8°. In some instances, upper surface 340 slopes downward at an angle of 5°.
Referring again to
At string channel exit 338, upper surface 340 is lower than a saddle of stringed instrument. For sound and playability, it is important that string contact the saddle. To account for saddle heights that vary across manufacturer and stringed instrument type, height HUS of string channel exit 338 of upper surface 340 is preferably less than 0.09 inch. In some instances, height HUS of string channel exit 338 is 0.07 inch.
String anchor seat arrangement 304 provides recess for anchor end of string and causes tension adjustment of string. String anchor seat arrangement 304 includes tensioning arm 334 including a string anchor seat 330 and notch 332 through which string passes.
Seat 330 is a recess against which anchor end of string abuts. Preferably, seat 330 has an arced cross-sectional surface which limits potential movement of anchor end. Optionally, seat 330 has a v-shaped cross section. Other configurations of seat 330 are contemplated.
As shown in
Notch 332 is defined by tensioning arm 334 and seat 330. Notch 332 is aligned with string channel axis CA. In this alignment, string passes from seat 330 to string channel entry 336, through string channel 314, and out string channel exit 338. Preferably, notch 332 is defined on three sides, as seen in
Actuator arrangement 306 is the interface enabling a user to adjust string tension. Preferably, rotation of actuator arrangement 306 causes string anchor seat arrangement 304 to pivot about pivot axis PA, either increasing or decreasing string tension.
Actuator arrangement 306 does not move vertically (either up or down along the rotational axis) as actuator arrangement 306 rotates. Movement of actuator arrangement 306 is discussed in greater detail with reference to
Retaining clip 344 enables actuator arrangement 306 to rotate in either direction and prevents actuator arrangement 306 from disconnecting from string anchor 300. Actuator arrangement 306 includes recessed notch 346 near one end. Retaining clip 344 connects to actuator arrangement 306 at recessed notch 346 within actuator arrangement receiving cavity 322.
Link arrangement 316 translates rotation of actuator arrangement 306 to pivoting of string anchor seat arrangement 304. Link arrangement 316 is connected to string anchor seat arrangement 304 and in communication with actuator arrangement 306.
As seen most clearly in
Preferably, the length L of string anchor 300 is less than 1.5 inches. Length L is shown in
Preferably, the width W of string anchor 300 is equal to or less than 0.5 inch. Width W is shown in
Components of string anchor 300, such as base arrangement 302 and string anchor seat arrangement 304 are preferably metal material. For instance, string anchor 300 and base arrangement 302 are aluminum. Other materials contemplated for components of string anchor 300 include steel, stainless steel, chrome-plated aluminum, brass, iron, zinc, plastic, and composite material.
As D decreases, string tension increases.
Traditional acoustic guitar piezoelectric transducer pickups (known as “piezo pick-ups”) are mounted below or within the bridge. These traditional piezo pickups combine the vibration of all six guitar strings into one electronic signal. The instantly-described configurations enable the control of volume, tone, frequency-dependent processing of audio signals (equalization), and/or effect and amplification of each individual guitar string. This can provide the guitar player with increased flexibility in customizing the sound of the guitar.
Piezo assembly 470 has piezoelectric transducer 472 that can be in communication with a receiver. Examples of receiver include amplifier, sound effect board, or other electronic processing device.
Communication between piezoelectric transducer 472 and receiver occurs via a wired or wireless connection. In the instance shown in
In some instances, the electric wire connects to a wireless signal transmitter or electronic jack mounted in the stringed instrument body. The electric wire can pass through the bridge of the stringed instrument. An electronic signal passes from the piezoelectric transducer 472 through the jack or wireless signal transmitter to a control unit which can enable adjustment of volume, tone or frequency-dependent processing of the audio signals from each of the guitar strings. This control unit can also provide pre-amplification of the guitar's sound. The control unit can, in turn, be in communication with a sound amplifier.
In some instances, piezoelectric transducer 472 enables an instrument player to tune the instrument via a tuner mounted on the body of the stringed instrument. The tuner is in electronic communication with the piezoelectric transducer 472.
Piezo assembly 470 includes piezoelectric transducer 472, window 474, foam 476, piezo cavity 478, and groove 480. Both piezo transducer 472 and foam 476 are positioned within piezo cavity. Piezo transducer 472 is positioned on the exterior so that it can be in contact with string passing from seat 430 to entry 436.
Piezoelectric transducer 472 is metal with a groove in the center. The groove provides a seat for string to sit in and vibrate against as the string is played. Abutting piezoelectric transducer 472 is foam 476. Foam 476 supports piezoelectric transducer 472 and provides a medium through which vibrations received by piezoelectric transducer are communicated to wire. Wire, not shown, makes an electrical connection with foam 476 within piezo cavity 478.
The method 800 begins by positioning the anchor end of string (operation 802). First, the non-anchor end of string is fed through a notch in a tensioning arm and into an entry of channel in a string anchor body. As the non-anchor end of string emerges from an exit of channel in string anchor body, the string can be pulled through until little to no slack remains in the string between the anchor end and the string anchor.
Next, the string is passed over saddle on the bridge of the acoustic instrument. The non-anchor end is then secured (operation 804) to the mechanical tuning peg on a headstock of the acoustic instrument.
In some instances, the mechanical tuning peg is used to adjust string tension to a first tension (operation 806). Thereafter, a position actuator can be used to adjust the string tension further.
When string anchor 400 is used, method 800 can additionally include tuning the string using a tuner in communication with the piezoelectric element in string anchor 400. Additionally, or alternatively, method 800 can include adjusting the sound output of each string on stringed instrument having a string anchor with a piezoelectric element.
It will be clear that the systems and methods described herein are well adapted to attain the ends and advantages mentioned as well as those inherent therein. Those skilled in the art will recognize that the methods and systems within this specification may be implemented in many manners and as such is not to be limited by the foregoing exemplified embodiments and examples. In this regard, any number of the features of the different embodiments described herein may be combined into one single embodiment and alternate embodiments having fewer than or more than all of the features herein described are possible.
While various embodiments have been described for purposes of this disclosure, various changes and modifications may be made which are well within the scope contemplated by the present disclosure. Numerous other changes may be made which will readily suggest themselves to those skilled in the art and which are encompassed in the spirit of the disclosure.
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