USRE16367E - Compound kesonatob - Google Patents

Description

June 22 1926. Re, 16,367

c. A, VALENTINE COMPOUND RESONATOR Original Filed Nov. 23, 191

2 Sheets-Sheet 1 g 42 4? Tiq.5.

TORNEYS June 22, 1926.

R 16,367 0. A. VALENTINE COMPOUND RESONATOR Original Filed Nqv. 23, 1916 2 Sheets-Sheet 2 Ti q.%

fi, INVENTOR ./0 {WM 4 WW1? Patented June22, 1926.

marries sea-res uisine a vhmm'rmn nion rs. remotes-sesame, iars, serial); 189,581, iue'a some, at, 1915. Application for'reisiue ma ember 31; 1920. swarm. 418,0;

* My inventiofn' relates to improvementsin compound resonators; andits object is to provide asimple andeflieient device which is" extremel responsive to sound vibrations, which is capable of effectively augmenting such vibrations, and which is, adapted to clarify the tones or sounds emitted, separating' ssch tohes br insneh manner as measures-grease wraaistinemess without less oftohal va use wasm f h r a e is I a sor'other device; m ying mgm gtie action, "may be usediri connection with other Mieeswhere r isdesi rfible to clarify and aumen tithe n inventionfiniay'be thore 1 anemones foliowing-spe cifiea tion, and then point out the novel features thereof in appended claims.

Referring the drawings:

"""Fi'gured is a-seetional side elevation of an amplifying-fibril, provided with a pluralit'y-of compound "resonators, which are made according to and embodying my invention.

Fig". 2 'is a plan view, and F 3 a front elerhtioir ofone of thfe compcun resonators shown in Fig. I. V

In'Fig; 4,1 have shown, in plan view, a modified of resonator, which also emmin-venom. Fig. 5 is-a front ele'vation of the form 'of resonator which is shown in Fig.4. I

Fig. 6 im setiohill' side elevation of another for-mot resonator, whi'ehis alsomade aeeordingto thi's invention.

Big? is a perspective view of another modificatienofconstruction, and

Fi -L18 i's'fa sectional front"-ele'vationofa stiH Eurther maimed structure, embodying the same invention;

Lik'eharaebers of 'refirenee desighate corresponding arts in all the figures;

1o flesi use fiat'board of-'thin wood, or other vibrating material, upon which the other parts of the apparatus are mounted. 11 are sugporting bridges, which, in the structure s own in Figs. 1, 2 and 3, run longitudinally across the center of the board 10,

on opposite sides thereof. Across the outer surfaces of these bridges, and disposed transversely in relation therewith, are a plurality pf parallel Ybfl$9 l?! 0!???919 9:

talking machine (not shown);

are e'lampihg strips 13 and all of these parts we held togetlle'rhgidiy by through bolts 14.

The vibrators 12 are preferably constructed of thin strips of materialsen'sitive to vibrations, such for example, a wood carefully seasonedv and repaired for this purpose. These'far'e ofidi erent dimensions so as to berespoiisi'vb eaoh to vibrations of difiereht-ffifequcticiesk caveman mfehns for-marnisgcm resultis to make them of p In; Fig. '1, four of these improved 'co'ntrresonators are in an amplifying hm, ehamber 20 'of a ham suitable for nsein conjunction 'wirh'a phonograph or At -the smaller we sum ho 'i asin a roehaecl by fiiine *,"by "mea ns oi which the? horn 'inaybailiie toa similar frame 28 at themouth of an ads te'r 24, the other end of which maybe a we to the sound emitting opening bf a: phbnograph or The sound vibrations pass through an opening between two 'deflle'ctors 25, but some 0 26""of the horn, which them so that they pass out through the mouth of the horn. Thus;- the sound vibrations pass through different paths throughth' horn, so that a plurality of my sosndmg boards may be used to 'advahtage with a horn. V

This eonstruct-idmhowever, inlay be widely varied, without'dbpirting from the invention.

I haveifouhdyin practice,"thiit carefully them are defle btd'tdthe curved surfaces seasoned'w'ood secures, by far,- the best resuits of any materials with which I am acquaint-ed. They introduce no deleterious vibrations of "their-own, sneer-e singularly res" sire mum imfiegsed vibmi n ama a d i my. e sneer? steal-hum the foregoing neseiiption. The vibrators 12 are-sac robably at least some of them are indepen ently responsive to diflerent frequencies. When the device is placed in the path of musical or other sounds, the vibrators are set in motion thereby, and tend to lengthen, sustain and augment the vibrations of the impressed sound waves. There is also a very notable clarifying efiect, parwas; is t as t the lki machine queney, and

responsive a one -fr-' or other similar devices, the various vibrations produced at the diaphragm being clarified to such an extent that there is a very marked improvement in the clearness of tone emitted and the elimination of the jumbling or confusion of sounds produced at the diaphragm, or between the diaphragm and the vibrators, due to diaphragmatic or other action setting up spurious or added vibrations not present in the original production.

The mounting of the vibrators upon a sounding board, such as the base board 10, is of importance, since this not only augments the volume of sound, butalso aids in its clarification. It is also important that the vibrators should have a ri id connect'ion with the sounding board of ase board, and that the vibrators, individually, should be rigidly connected thereto.

By mounting a series of resonatorsvof different dimensions or difl'erently tuned upon a sounding board or its equivalent in the path of the sound vibrations, all of the resonators become more sensitive to the vibrations, and they and the sounding board produce a series of overtones which supply the loss of overtones which occurs through present methods of reproducing.

As the vibrators are tuned to definite periods of vibrations, preferably all within the range of audibility, there is another important function performed by them, in that certain undesirable irregular vibrations, such as those produced by the scratch of a phonograph needle, are not augmented, so that, in efi'ect, they are proportionately reduced or eliminated.

In the structure shown in Figs. 4 and 5,

l 10 designates the base board. In this case,

. secured to the bridges by the bridges 11 are set along the opposite edges of the board. The vibrators 12 are means of clamping strips 13 and through bolts 14", as in the previously described construction, but in this case, each is secured near one of its ends, so that a separate piece is required for each vibrator.

The operation of this embodiment of my invention is so similar to that previously described, that it would be superfluous to repeat a description of it.

It is obvious that the base board need not be plane, but that my invention is applicable to a parabolic or curved sounding board such as that shown at 10" in Fig. 6. In this case, the bridge 11, and the clamping strip 13 are curved to conform with the shape of the base board 10". The vibrators in this figure are designated 12".

In the structure shown in Fig. 7, the base board 1O is plane, and the bridge 11 is placed across its surface. The vibrators 12 are held between the bridge and the clamping strip 13, but, in this case, they are placed edgewise with relation tothe board 10 instead of flatwise, as in other cases. These vibrators have much the same operation as that described in connection with the structure of Figs. 1, 2 and 3.

In the structure of Fig. 8, a plurality of rows of parallel vibrators 12 are shown between bridges 11 and clam ing strip 13", held together and to base oard 10 by through bolts 14.

I have illustrated and described several structures embodying my invention, to show that it is not limited to any specific construction or use, but that it is in fact capable of wide variation withinits spirit and scope. In fact, I intend no limitations other than those imposed by the appended claims.

his an important, although not essential, feature of the invention, that each of the vibrators be made as an independent unit, so that it may be capable of vibrating freely, without necessarily involving the vibration of others.

What I claim is l. A device for reproducing sounds, having a chamber adapted to receive sound waves set up by a diaphragm and a base board and wooden vibrators connected with said base board and mounted in said chamber to be acted upon by such sound waves.

2. A device for reproducing sounds, having a chamber adapted to receive sound waves set up by a diaphragm, means for leading said sound waves to said chamber, and flat vibrators arranged .in said sound chamber and mounted in the path of said sound waves.

3. -A device for reproducing sounds, having a chamber adapted to receive sound waves set up by a diaphragm, means for leading said sound waves to said chamber,

and flat vibrators arranged in said sound chamber and mounted in the path of said sound waves, and a sounding board upon which said vibrators are mounted.

In witness whereof, I have hereunto signed my name.

CHARLES A. VALENTINE.

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