CA1095294A - Neck for a stringed instrument - Google Patents

Neck for a stringed instrument

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Publication number
CA1095294A
CA1095294A CA297,953A CA297953A CA1095294A CA 1095294 A CA1095294 A CA 1095294A CA 297953 A CA297953 A CA 297953A CA 1095294 A CA1095294 A CA 1095294A
Authority
CA
Canada
Prior art keywords
neck
sheets
neck body
bamboo
plywood
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
Application number
CA297,953A
Other languages
French (fr)
Inventor
Michiaki Tomioka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHUSHIN GAKKI SEIZO KK
Original Assignee
CHUSHIN GAKKI SEIZO KK
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 CHUSHIN GAKKI SEIZO KK filed Critical CHUSHIN GAKKI SEIZO KK
Priority to CA297,953A priority Critical patent/CA1095294A/en
Application granted granted Critical
Publication of CA1095294A publication Critical patent/CA1095294A/en
Expired legal-status Critical Current

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Abstract

Title of the Invention Neck for a stringed instrument ABSTRACT OF THE DISCLOSURE

A neck for a stringed instrument formed of a ply-wood comprising a lamination of a plurality of sheets of bamboo.
A length of bamboo greater than the length of the neck to be produced and having a proper diameter is radially s-tiffed into equal sectors each having an arcuate section. Both the external and internal surfaces of the sectors are sliced tangentially and the opposite lateral edges of the sectors cut in a direction perpendicular to the tangential direction, thus providing a plurality of sheets of the required length which are rectangular in cross section. Using any known wood lamination technique, the sheets are laminated into a plywood. In a practical embodiment, the plywood is in the form of a straight square timber, the opposite ends of which are cut off, leaving the intermediate portion for use as a neck body. The end portions are used as a peg head and a mounting limb, which are adhesively bonded with tune corresponding positions of the neck body portion in given orientations before cutting the plywood into the neck form. Preferably, the major surface of the laminar sheets is aligned in parallel relationship with the surface of the neck body on which a finger board is mounted, or in a direction perpendicular to the last mentioned surface.

Description

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The inven-tion relates to a stringed instrument, and more particularly, to a neck attached to a sound box for supporting strings of a guitar.
A usual stringed inskrurnent has a neck body on which a finger board supporting fre-ts is mounted and which has its one end integrally connected with a peg llead and its other end formed with an integral limb for connection with the sound box. The re~uirement on the neck is its high strength which is sufficient to wi-thstand a high tension in the strings and to prevent the strains from occurring over a prolonged period of use. On the other hand, it is desired that the acoustic attenuation be minimized in view of the delicate influence upon the tone quality. A
converltional neck comprises a solid member formed of a maple--tree.
However, a high degree of skill and experience is required in the selection of the grain or its orientation when cutting the wood into a scluare timber or slab and cutting the lat-ter into the form of the neck. The final quality of the resulting products is greatly influenced by such skill if they are formed from the single wood. Another difficulty with the conventional neck material is the tremendous length of the seasoning period required from tlle lumbering of the wood until a product is finished. When producing an ordinary class product, the seasoning period by ; natural drying will be nearly three years at the wood level, t.wo years at the timber or slab level and about one year after a rough machining. This implies the necessity of paying an attentive consideration to the procurement of the wood and the control over the production steps. Though the natural dryi3lg may be replaced by a forced drying, it is highly desirable to have the natural seasoning ~eriod at the wood and the timber levels in order to minimize the strains which might be caused by the aging effect.
A furtller disadvantage which occurs with the use of the solid neck ;~

material is the low proportion of the volume of the product as O

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compared with thc rcquired timber vo~ume, meaniny a low yicld.
Additional disadvantage of -the conventional neck is the use of an iron or stainless steel reinforcing rod which is dis~osed longitudinally thereof along tihe centerline in order to prevent strains. This increases the overall weight of the ins-trument.
It is an object of the invention to provide a neck for a stringed instrument which can be manufactured in â facilitated manner.

It is another object of the invention to provide a neck for a stringed instrument which can be manufac-tured inexpensively with a high yield.
I~ is a further object of the lnvention to provide a neck for a stringed instrument which provides a high strength without the use of a reinforcing rod.

It is still another object of the invention to provide a process of manufacturing a neck for a stringed instrument which enables products of uniform ~uality to be manufactured inexpen-sively without requiring a special skill.
In accordance with the invention, there can be provided a neck for a stringed instrument formed of a plywood comprising a larnination of a plurality of sheets of bamboo. A length of bamboo greater than the length of the neck to be produced and llaving a proper diameter is radially stiffed into equal sectors each having an arcuate section. Both the external and internal surfaces of the sectors are sliced tangentially and the opposite lateral edges of the sectors cut in a direction perpendicular to the tangential direction, thus providing a plurality of sheets of the required length which are rectangular in cross section. Using any known wood lamination technique, the sheets are laminated into a plywood. In a practical embodiment, the plywood is in the form of a strai~ht square timber, the opposite ends of which are cut ~'~
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off, leaving the intermediate portion for use as a neck body.
The end portlons are used as a peg head and a mounting limb, which are adhesively bondedwith the corresponding positions of the neck - 3a --, . ~ ,, ~ , .

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body portion in given orientations before cutting the plywood into the neck form. Preferably, the major surface of the laminar sheets is ali~ned in parallel relationship with the surface of the neck body on which a finger board is mounted, or in a direction perpendicular to the last mentioned surface.
In another embodiment of the invention, the peg head portion and the nec]~ body may be formed by one piece plywood.
~efore laminating the sheets, the peg head portion of the sheets ~ may be folded to form a given angle with the neck body portionO
Alternatively, the peg head portion may be folded after the lamination into the plywooa. These techniques can be advantageously employed where the major surface of the sheets is parallel to the plane of : the finger board.
~ A preferred bamboo material used in the invention is a .. ~ .
species of bamboo commonly referred to as "MOHSCH" (phonetically) in Japan and which is "phyllos-tachys mitis" by nomenclature.
. . .
i This species of bamboo may have a diameter up to 10 centimeters or more and a thic]cness even exceeding 1 centimeter. The material has a thin and dense fibre structure, and a high level of tough-ness or resistance to crack while exhibiting a specific gravity less than that of the conventional wood material for the neck.
What is more important, a stabilized strength and a strain-free condition can be attained with this species of bamboo with a seasoniny period which is substantially reduced than that of the wood material, and this characteristic has been demonstrated in ::
its applications as rulers and slide rules. The drying period from the fellin~ of bamboo until the sheets are prepared to the lamination extends from several months to one year on the average ~here natural drying process is employed. ~lowever, a forced drying process may be employed which ta~es place at 100C ~or 20 to 24 hours. A suitable sectional size of the sheets may be 5mm by 15 n~, for example.

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Thus, the invention provides a neck which is reduced in weigilt and still rigid enough to preven-t strains over a pro-longed period of use. Also, tile invention provides a neck having a minimized acoustic at-tenuation, substantially improving the ; acoustic effect.
The above and other objects, features and advantages ~ of the invention will become apparent from the following detailed .~ description of an embodiment thereof with reference to the drawings, in whieh:
Fig. 1 is a perspective view of the neck according to the invention, also showing part of the sound box and the finger board;
Fig. 2 is a cross section taken along the line 2-2 shown in Fig. l;
' Fig. 3 is a cross section of a modification of the neek;
v Fig. 4 is a schematic section of bamboo, illustrating .
the slittiny thereof; and Fig. 5 is a sehematie illustration of the process of ; manufacturing tile neck according to the invention.
Referring to Fig. 1, the neck for a stringed instrument according to the invention is generally shown by reference numeral 10. The neck 10 eomprises a straight elongate neck body 11, a head 12 extending from one end of the nee]c body 11 and Eorm.ing a given angle thereto, and a llmb 13 integrally extending from the other end of the neck body 11. The limb 13 serves as the mount to attach the neck 10 to a sound box 14. The nec]c body 11 i ineludes an arcuate bottom surface 18 and a flat upper surface ~ 17 (see Figs. 2 and 3) to which is adhesively bonded a finger ;;~ board 15 extending over the surface oE the sound box 14. The head 12 is formed with a pair of slots 30 for receiving pegs of known f orm, not shown.
In accordance with the invention, the neek 10 is formed i~ _ 5 _ of a bamboo plywood. Referring to Figs 2 and 3, the plywood comprises a multi-layer lamination of bamboo sheets 16 adhesively secured together, tne sheets 16 in one layer being disposed in complementary manner with respect to those in the adjacent layers. -~
In the example shown in Fig. 2, the shee-ts 16 are oriented so that their major surface lies parellel to the upper surface 17 of the neck body 11 to which the finger board 15 is applied, while in the example of Fig. 3, they are oriented in a perpendicular dir~
ection thereto. While the neck having the sheet orientation 10 shown in Fig 3 has a greater resistance to bending stresses applied as a result of the tension in the strings as compared with the sheet orientation of Fig. 2, it is possible to achieve a satisfactory strength for practical purposes with the arrange-ment of Fig. 2.
Fig 4 illustrates the slitting of bamboo 20 into sectors 21. In the example, the bamboo 20 is shown as having a cylindri.cal section and radially slitted into eight equal sectors : , each having an arcuate cross section. Both the external and internal surfaces of the sectors 21 are tangentially sliced to form opposite flat surfaces, and the opposite lateral edges cut in a direction perpendicular to the flat surfaces, thus forming the sheets 16. A preferred species of bamboo is "phyllo-stachys mitis" by nomenclature, which is called "MOHSOH"
(phonetically) in Japan. This species grows extensively, principally in the southern part of Japan, and exhibits varying properties dependin~ on the habitat. By experience, it is found that this species of bamboo which grows in the northern district of Shizuoka pre~ecture and the southern district of Yamanashi prefecture of Japan is most suitable for the purpose of the ., .
invention. The bamboo may have a diameter and a thickness well in excess of 10 and 1 centimeter, respectively, and thus bamboo of any desired size may be chosen and splitted into a number of <~ ,.~.., :; , ,, "~
~ : , . ,:, .:

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sectors which depends on ~he size. It is desirable that the final sheets have a sectional size on the order of 5 mm by 15 mm, Eor example. It is preferable that the bamboo be naturally dried for a period from six months to one year before slitting it into the sectors. However, the bamboo may be slitted and sliced into sheets before the completion of the full dry-ing process, and the sheets subjected to a forced drying, which may be effected at a -temperature of 100C for 20 to 24 hours in the same manner as the usual wood drying techniques.
Fig. 5 illustrates the forma-tion of a neck from a plywood 22 in the form of a straight square timber. The plywood .
.~ 22 can be ~anufactured as a lamination of a number of sheets 16, using the conventional wood lamination technique. Specifically, ~ an adhesive is applied to the individual sheets, whi.ch are then ` secured together under uniform pressure. ~ known synthetic resin adhesive may be used. The opposite end portions 26, 27 are cut .~ off the plywood along dotted lines 23, 24, leaving -the central portion 25 which is to form the neck body 11. It will he noted .~ that the dotted lines 23 extend angularly in accordance with the predetermined angle to be formed between the peg head 12 and the neck body 11 which the dotted lines 24 extend in a direction perpendicular to the.length of the neck body portion 25. The end portion 26 is adhesively bonded with the severed surface 2 of the portion 25 by inver-ting the portion 26 so that its severed surface 31 is coplanar with the upper surface of the neck body portion 25. Though not shown, the severed surface 31 of the portion 26 may be bonded with the lower surface of the portion 25 so that the severed surface 2~ lies in coplanar re~
lationship with the upper surface of the peg head portion 26.
The other end portion 27 is adhesively bonded with the lower surface of the portion 25 so that the severed surface 29 of the end portion 27 is flush with the severed surface 32 of the ;

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por-tion 25. In this manner, the approximate configuration of the neck lO is achieved, and a finish machining to the final ~; neck form is then conducted.
-:~ The described process of manufacturing the neck is ".
equally applicable to either sheet orientation shown in Fig. 2 . or Fig. 3. ~owever, since the angle between the peg head 12 :,.
and the neck body ll is generally a relatively small value, :~ the portion 26 need not be cut off the plywood 22 but the peg :. head may be folded from the plane of the neck body portion 25 ` ~:
-,. 10 where the sheet orientation of Fig. 2 is employed.
~ Alternatively, with the sheet orientation of Fig. 2, prefolded ~ sheets may be used to provide the peg head 12 integral with the neck body 11 and having the gi.ven angle witll respect to the latter. In this case, it is only necessary to join the limb 13 with the neck body ll.
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Claims (6)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A neck for a musical instrument, dimensioned for being attached to a sound box of a musical instrument, for carring a finger board thereon and for supporting strings of a musical instrument; said neck comprising: an elongated neck body, a head extending from one end of said neck body, and a limb extending from the other end of said neck body for attaching said neck to a sound box of a musical instrument; said neck body, head and limb each comprising a multi-layer lamination of adhesively bonded flat rectangular cross section bamboo sheets having major surfaces defined by slicing bamboo stalks in the tangential direction thereof; said neck body having an end face defining a given angle with the length dimension of said neck body; and said head mounted on said neck body parallel to said end face so that said head extends from said neck body at said given angle relative to the length dimension of said neck body.
2. A neck according to claim 1, in which each layer of the plywood comprises a plurality of closely juxtaposed sheets, the sheets in each layer being disposed in a complementary manner with those in its adjacent layers.
3. A neck according to claim 1, in which the sheets are oriented such that their major surface is parallel to the finger board while the sheets in the region of the head form the given angle with the finger board.
4. A neck according to claim 1, in which the sheets are oriented such that their major surface is at right angles .
to the finger board, and extend lengthwise of the finger board.
5. A neck according to claim 1, in which the bamboo is of a species "phyllostachys mitis by nomenclature.
6. A neck according to claim 1, in which the sheets are rectangular in cross section and measures 5 mm by 15 mm.
CA297,953A 1978-03-01 1978-03-01 Neck for a stringed instrument Expired CA1095294A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA297,953A CA1095294A (en) 1978-03-01 1978-03-01 Neck for a stringed instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA297,953A CA1095294A (en) 1978-03-01 1978-03-01 Neck for a stringed instrument

Publications (1)

Publication Number Publication Date
CA1095294A true CA1095294A (en) 1981-02-10

Family

ID=4110888

Family Applications (1)

Application Number Title Priority Date Filing Date
CA297,953A Expired CA1095294A (en) 1978-03-01 1978-03-01 Neck for a stringed instrument

Country Status (1)

Country Link
CA (1) CA1095294A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107293274A (en) * 2017-06-23 2017-10-24 金容兰 A kind of bamboo guitar bucket and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107293274A (en) * 2017-06-23 2017-10-24 金容兰 A kind of bamboo guitar bucket and preparation method thereof

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