US594436A - simpson - Google Patents

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US594436A
US594436A US594436DA US594436A US 594436 A US594436 A US 594436A US 594436D A US594436D A US 594436DA US 594436 A US594436 A US 594436A
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neck
mandolin
board
piece
holes
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    • 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
    • G10D1/00General design of stringed musical instruments
    • G10D1/04Plucked or strummed string instruments, e.g. harps or lyres
    • G10D1/05Plucked or strummed string instruments, e.g. harps or lyres with fret boards or fingerboards
    • G10D1/06Mandolins

Description

(No Model.)
B. B. SIMPSON.
MANDOLIN.
'No. 594,436. Patented Nov: 30,1897.
Inventor, P24 aaflgh i m gm zzwd UNITED STATES PATENT OFFICE.
ROY B. SIMPSON, OF FORT VORTH, TEXAS, ASSIGNOR OF ONE-HALF TO VALTER E. KAYE, OF SAME PLACE.
MANDOLIN.
SPECIFICATION forming part of Letters Patent No. 594,436, dated November 30, 1897.
Application filed October 1, 1896. Serial No, 607,515. (No model.)
To all whom it may concern.-
Be it known that I, ROY B. SIMPSON, a citizen of the United States, residing at Fort lVorth, Texas, have invented certain new and useful Improvements in Mandolins, of which the following is a specification.
Myinvention relates to mandolins; and the objects are to obtain a tone for mandolins as nearly as possible equal to that of violins and other stringed instruments played by bows, to attain a penetrating tone never before accomplished, to facilitate the rendering of slurred passages in music, to obtain harmonics as readily as on bow-stringed instruments, to increase the range of scale without increas ing the length of the neck, to avoid the harsh metallic tones so common in mandolins, to
make the mandolin more durable, to prevent the instrument from splitting and cracking when subjected to sudden changes of temperature, and to prevent the warping of the neck. I accomplish these objects by the novel construction of parts hereinafter fully described, and more particularly pointed out in the claims.
Reference is had to the accompanying drawings, forming a part of this specification.
Figure 1 is a perspective view of a mandolin, showing an increased number of frets and the improved sound-holes. Fig. 2 is a view, partly broken, with the top or sounding board removed to show the arrangement of the end piece of the neck and the brace-bars. Fig. 3 is a view of the top or sounding board inverted, showing arrangement of braces and sound-holes. Fig. 4 is a View of the U -shaped brace for the end piece of the neck of the mandolin. Figs. 5 and 6 are side elevations of the braces. Fig. 7 is a side elevation of one of the ribs, showing a mortised place for the U-shaped brace.
Similar letters of reference are used to indicate the same parts throughout the several views.
Fig. 1 shows the finger-board N, which is attached to the neck M. Instead of seventeen frets, twenty-two or more are inserted in the finger-board. The sounding'holes F F are shown in Figs. 1 and 3.
Fig. 2 shows the braces A and A. mortised in the reinforcing-strip II and the shell 11 and extending to the jacket H. Fig. 5 shows the shapeof these braces. Brace .A relieves the pressure of the strings under the bridge. Brace A relieves the strain on the neck and prevents warping of the neck. Besides being mortised into the shell these braces are glued to the sounding-board R. The bar B is glued to the under side of the soundingboard and parallel with the G or large strings. This bar equalizes the tone on the four double strings and creates a penetrating power that cannot be obtained without it. The bars D D and (Z (Z brace the delicate parts of the sounding board. All of these braces are glued to the under side of the sounding-board and may be made of any suitable wood whose acoustic properties correspond with the acoustic properties of the wood used in constructing the mandolin. The bars 0 O are also glued to the under side of the sounding-board and prevent the splitting of the soundingboard caused by the sudden changes of temperature. These bars are to be Very thin.
The sounding-holes F F are preferably fshaped or s-shaped. They may have the shape of the $-mark, or they maybe straight parallel holes, or they maybe in the shape of ornamental or fancy scrollwork on each side of or parallel with the strings and must be on each side of the strings. This arrangement of the sound-holes allows an extension of the finger-board.
Fig. 6 shows the shape of the bar B. The tapering end of this bar points toward the neck of the mandolin. The U-shaped brace is mortised in the neck of the mandolin and also in the ends of the ribs. This brace maybe made of vulcanized rubber, gut-ta-percha, or some hard substance that will not impair the acoustic properties of the wood used in constructing the instrument. This brace prevents the splitting or chipping off of the end piece of the neck where the ends of the ribs are glued on. The mortises in the ends of the ribs hold the ribs in place and prevent the neck from bending up when subjected to great strain by the strings. It will be understood that the reinforcingstrip H is cut into to allow brace E to extend partially into the ends of the ribs.
It willbe seen that the mechanical construction of the instrument will make it strong and durable. The shape and arrangement of the sound-holes give qualities to the tone of the mandolin never before obtained. In other mandolins the sound-holes do not allow more than half of the vibrating-air capacity of the instrument to respond when the strings are struck by the pick or plectrum. In my mandolin all the air capacity is utilized. The vibrating-air capacity in my mandolin is so great that it vibrates to 13 natural, and 011 other mandolins the vibratingair capacity vibrates only to G natural,which is two tones lower, and consequently when my mandolin is tuned to concert pitch the tension of the strings is not so great as that required in other mandolins,therebylessening considerably the danger of breaking strii'igs.
The particular arrangement of the soundholes and the bass-bar B gives a smooth tone necessary for the rendition of slurred passages in music, as well as making it possible to tune the mandolin to a higher pitch than other mandolins. The bass bar and the sounding-holes by means of the greater vibrating-air capacity prevent the harsh metallie sound noticed in other mandolins.
I have an improvement in frets for mandolins. In other mandolins brass and German silver have been used and the finger-boards last only a short time. I have found that steel frets will last longer than the brass or German-silver frets and can be made much smaller and almost flush with the surface of the finger-board. On other mandolins a person can practice only a short time before the fingers become sore and blistered. When steel frets are used, the strings may lie much closer to the finger-board, thereby rendering the fingering of the instrument much easier. Using steel makes it possible to put in a greater number of frets, because the steel frets can be made very narrow, thereby leaving the spaces between the frets wide, notwithstanding the increase in the number of the frets, and consequently the lingering of rapid passages in the upper register is greatly facilitated.
Having fully described my invention, what I claim as new, and desire to secure by Let ters Patent, is-
1. A mandolin having a neck-piece provided with a U -shaped brace mortised therein.
2. A mandolin having a sounding-board provided with sounding-holes arranged parallel, curved braces glued to the under side of said board, one set of said braces being arranged on the outside of and near one end of said holes and another set of braces on the inside of and near the other end of said holes.
3. A mandolin having a neck-piece,a lingerboard attached to said piece,a shell and jacket attached to and inclosing the inner end of said neck-piece and a U-shaped brace mortised in said shell and neck-piece.
t. A mandolin having a neclep'icee, a shell attached to said neck-piece, and a U-shaped brace mortised in said neck and said shell.
5. A nandolin having a neck-piece, a shell attached to said neck-piece, a U -shaped brace mortised in said neck-piece and said shell, and cross-braces mortised in said shell.
6. A mandolin having a neck-piece, a shell and a finger-board attached thereto, said linger-board being provided with steel frets,- a U-shaped brace mortiscd in said shell and neck-piece, a sounding-board provided with a bass-bar and having sound-holes.
ROY l SIMPSON.
Witnesses:
J AMES GILFonD Bnowivimc, J. M. BIOTHERSHEAD.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690210A (en) * 1969-12-10 1972-09-12 Masaru Imai Guitar

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690210A (en) * 1969-12-10 1972-09-12 Masaru Imai Guitar

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