Headblock and fingerboard support
A headblock and fingerboard support assembly for a stringed instrument includes a fingerboard support assembly for mounting to a neck and fingerboard of the stringed instrument. The fingerboard support assembly further includes a plate having an integrated rail structure. A headblock has an integrated channel for receiving the integrated rail structure. The headblock is adapted to secure to the fingerboard support assembly. A method of assembling a stringed instrument includes mounting a plate structure to a neck and fingerboard of the stringed instrument, where the plate includes an integrated rail, and mounting a headblock to an interior surface of a body of the stringed instrument, where the headblock has an integrated channel structure for receiving the integrated rail of the plate structure.
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The present invention relates in general to musical instruments and, more particularly, to a headblock and fingerboard support apparatus for stringed musical instruments.
BACKGROUND OF THE INVENTIONGuitars are popular musical instruments and are used commonly by both amateur and professional musicians. The acoustic-type guitar generally has a hollow body which is connected to a neck. The hollow body includes a backboard and a soundboard. Integrated into a central area of the soundboard is a soundhole. The backboard and soundboard are connected by a shaped sidewall. The neck and body are generally connected together using a structure commonly known as a headblock. The neck terminates at a joint where the neck and headblock come together in a neck-to-body joint.
Guitars have a series of strings strung at substantial tension from a bridge on the soundboard, across the soundhole, and along the neck. Guitars originally made use of low tension strings made of gut, and later of nylon. Later, steel strings were incorporated into guitars. The use of steel strings dramatically increased the tensile forces which act on the body and neck of the guitar. The substantial increase in tension associated with the use of steel strings has also led to an increase in failure modes, particularly in places where subcomponents of the guitar come together at various joints.
Prior art designs have attempted to improve upon the strength and durability of guitars without adversely affecting playing qualities. Improvements have included bracing patterns on the underside of the soundboard, or neck-to-body joint configurations for strengthening the joint area of a guitar.
Notwithstanding the various improvements, the manufacture of guitars, particularly acoustic guitars which generally use wood materials in construction of the instrument, is subject to a great deal of variability in the completed product. The physical qualities of wood material can vary from piece to piece, and environmental factors such as humidity, also play a role on the overall physical characteristics of the various subcomponents which are integrated into a manufactured guitar.
In addition, guitars continue to suffer from a lack of strength and rigidity as well as a tendency to move or rotate at joints, particularly in the neck-to-body joint. To lessen the effects of variability, as well as promote rigidity and stability, manufacturers have traditionally relied on extremely precise tooling and/or individual skill to enable the various subcomponents of the instrument to fit closely together. However, the skill of an individual craftsman varies, as does the raw material used in the manufacturing process.
A need exists for an apparatus, method of assembly, and method of manufacture of a neck-to-body joint of a guitar which increases the physical integrity of the instrument. In addition, the apparatus, method of assembly and method of manufacture must be able to be reproduced with a high degree of consistency.
SUMMARY OF THE INVENTIONIn one embodiment, the present invention is a headblock and fingerboard support assembly for a stringed instrument, comprising a fingerboard support assembly for mounting to a neck and fingerboard of the stringed instrument, the fingerboard support assembly including a plate having an integrated rail structure, and a headblock having an integrated channel for receiving the integrated rail structure, wherein the headblock is adapted to secure to the fingerboard support assembly.
In another embodiment, the present invention is a headblock and fingerboard support assembly for a stringed instrument, comprising a plate having an integrated rail, and a headblock for mounting in the body of the stringed instrument, the headblock having an integrated channel, which receives the integrated rail of the plate.
In yet another embodiment, the present invention is a method of assembling a stringed instrument, comprising mounting a plate structure to a neck and fingerboard of the stringed instrument, wherein the plate includes an integrated rail, and mounting a headblock to an interior surface of a body of the stringed instrument, wherein the headblock has an integrated channel structure for receiving the integrated rail of the plate structure.
In still another embodiment, the present invention is a method of manufacturing a headblock and fingerboard support assembly for a stringed instrument, comprising providing a plate having an integrated rail, and providing a headblock for mounting in the body of the stringed instrument, the headblock having an integrated channel, which receives the integrated rail of the plate.
The present invention is described in one or more embodiments in the following description with reference to the Figures, in which like numerals represent the same or similar elements. While the invention is described in terms of the best mode for achieving the invention's objectives, it will be appreciated by those skilled in the art that it is intended to cover alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims and their equivalents as supported by the following disclosure and drawings.
To provide structural rigidity to guitar 10 and promote consistent joint integrity in an assembled guitar, a headblock and fingerboard support assembly can be utilized. A headblock can be mounted in an interior surface of the body of guitar 10. A fingerboard support assembly is mounted to a neck 14 of guitar 10. The headblock receives the fingerboard support assembly to form a neck-to-body joint. The headblock and fingerboard support assembly can be formed out of a composite material which includes fibers which are laid-up in a particular arrangement for a desired stiffness. Use of a headblock and fingerboard assembly in guitar 10 provides a uniform structure which is more easily manufactured to a consistent, high degree of precision. The neck to body joint is consistently of high quality, as a result.
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Plate 28 includes bottom surface 30. A series of threaded inserts 32 are disposed through bottom surface 30. Threaded inserts 32 are configured to allow for an attachment mechanism such as a screw or a bolt, which can pass through the threaded insert to couple to another subcomponent piece of guitar 10.
Plate 28 is shown with two integral rails 34. Rails 34 are unitary in construction with plate 28. Rails 34 are disposed along substantially the bottom surface 30 of plate 28, one rail 34 disposed on opposing sides of bottom surface 30. Rails 34 are intended to secure to an integrated channel formed in a headblock which is mounted to an interior surface of the body of guitar 10. Rails 34 can vary in overall shape for a particular application. Rails 34, as shown, have a tapered design to provide for ease of assembly.
Apertures 36 are disposed throughout plate 28, forming an opening from the bottom surface of plate 28 to a top surface of plate 28. Apertures 36 are intended to allow for adhesive material such as epoxy to penetrate the plate structure and obtain a better overall bond to the plate 28.
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As depicted, two channels 62 are disposed along the top surface 60 of headblock 52. Channels 62 are intended to receive the integrated rail 34 portion of plate 28.
Again, headblock 52 can be composed of a molded or formed composite material. Here, as in plate 28, the composite material can be selected to provide a specified amount of support and rigidity, and can be adapted to vary across any surface(s) of the headblock 52 for a particular application. Headblock 52 functions to receive the neck 14 and hold the neck 14 firmly in a desired location and position, at the desired angle and orientation relative to the body 12 of guitar 10.
Neck 14, including plate 28, can be intended to not be permanently secured to headblock 52 and, thereby, body 12. Instead, the headblock 52 and fingerboard support assembly 49 can be fastened with screws or bolts to securely mount the assembly 49 to headblock 52, but also to allow the completed guitar to be disassembled if needed or desired. The flexibility of disassembly adds unique functionality to the instrument and flexibility in the manufacturing and assembly process.
The use of shim 53 allows the same headblock 52 to be used in a variety of guitar manufacturing scenarios. A single headblock 52 can be used to join together the neck 14 and body 12 of guitars 10 having differing interior surface features. As a result, the manufacturing process is made more efficient, yet each headblock 52 fits snugly and appropriately in a particular setting. Because shim 53 is composed of wood, shim 53 is easily sanded to a particular shape. Sanding a composite headblock 52 would present a host of additional problems into the manufacturing process, which the introduction of shim 53 eliminates.
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The concept of using a fingerboard support assembly including plate 28 in conjunction with a unique headblock 52 provides a novel and extremely rigid method of keeping the neck 14 and neck-to-body joint area of the body 12 in a precise and desirable alignment. The precise and desirable alignment is partly achieved by the selection of a choice of composite materials to form plate 28 and headblock 52 for a particular application. In addition, the specific engineering properties of the plate 28 structure, coupled with the properties of headblock 52, make contributions. Finally, the overall geometry of the subcomponents also plays a part.
The rigid structure of plate 28 and headblock 52 helps to eliminate changes in neck 14 angle and string action caused by environmental and climactic changes. In addition, the rigid nature of the structure helps to reduce energy loss from the string into the neck-to-body region of the guitar 12, which enhances the overall sustain of the guitar 12.
The composite headblock 52 can be made in a single size, as was previously described. With the use of shims 53, a single headblock can serve in a variety of guitar 10 applications. Headblock 52 has several surfaces which can interface with shim structures 53 to mate with the interior top, sides, and back of the body 12 of guitar 10. Again, using a variety of shims 53 simplifies manufacturing and reduces inventory. Again, a single-sized headblock can be used for multiple shapes and styles of instruments. The preassembly of the headblock to the shim members allows the overall assembly of guitar 10 to be processed with a water-based glue in an orderly sequence, instead of employing several types of glues in the same process, since the composite materials employed in plate 28 and headblock 52 cannot be bonded with water-based glues.
Overall, guitar 10 is more easily manufactured using the fingerboard support assembly and headblock structures previously described. In addition, the instrument is consistently of better quality.
While one or more embodiments of the present invention have been illustrated in detail, the skilled artisan will appreciate that modifications and adaptations to those embodiments may be made without departing from the scope of the present invention as set forth in the following claims.
Claims
1. A stringed musical instrument, comprising:
- an acoustic body;
- a neck having a tongue formed normal to a long axis of the neck and two channels formed in a surface parallel to the long axis of the neck;
- a fingerboard mechanically coupled to the neck;
- a plate having two integrated rails disposed on opposite sides of a first surface of the plate and extending above the first surface of the plate, the plate being flat across a second surface opposite the first surface of the plate, the plate being a carbon fiber reinforced plastic having a rigidity that varies across the plate, wherein first ends of the rails are disposed in the channels of the neck and the second surface of the plate is secured in a recessed cavity of the fingerboard; and
- a headblock mechanically coupled to the acoustic body, the headblock having a groove for receiving the tongue of the neck and two channels for receiving second ends of the rails to provide rigidity between the acoustic body and neck.
2. The stringed musical instrument of claim 1, further including a rod disposed in a groove formed in a surface along the long axis of the neck.
3. The stringed musical instrument of claim 2, wherein the rod is made of graphite, metal, or composite material.
4. The guitar of claim 1, wherein the headblock is made of composite material.
5. The guitar of claim 4, wherein the composite material of the headblock varies in rigidity.
6. The stringed musical instrument of claim 1, further including a shim disposed between the headblock and acoustic body.
7. The stringed musical instrument of claim 1, wherein the plate is secured to the recessed cavity of the fingerboard with adhesive.
8. The stringed musical instrument of claim 1, further including an aperture formed through the plate for securing the plate to the acoustic body.
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Type: Grant
Filed: Sep 29, 2010
Date of Patent: Jan 10, 2012
Assignee: Fender Musical Instruments Corporation (Scottsdale, AZ)
Inventors: Kevin M. Kroeger (Corona, CA), Meaulnes Laberge (Graham, WA), Timothy P. Shaw (Madison, TN), Daniel J. Smith (Corona, CA), Donald Scott Wade, Jr. (Tempe, AZ)
Primary Examiner: Elvin G Enad
Assistant Examiner: Christopher Uhlir
Attorney: Robert D. Atkins, Patent Law Group
Application Number: 12/893,734
International Classification: G10D 3/00 (20060101); G10D 1/08 (20060101);