US1073408A - Sound-box. - Google Patents

Description

A C. DIBHL.

SOUND BOX.

APPLICATION FILED AUG. 31, 1910.

1,073,408 Patented Sept. 16, 1913.

INVENTCR I I ATTORNEY loin so rrsn srArEs Psi ,llliBl lLT D. IlIEHL, OF GAIVIIDEN, NEW JERSEY, ASSIGNGE, T "VICTOR ICALKINQ:

Mi-KC'HINE GOMPANY,

A COBPURATIQN OF NEW 3 SOUND-BOX.

fipecification of Letters leaent.

' Application filed August 31, 1310. Serial No. 579,338.

erence being had to the accompanying drai "lhis invention particularly relates to the mounting or gasket which holds the diaphragm of a sound box by engaging the opposite iaces of said diaphragm.

'lhe principal objects oi this invention are to provide simple and eilicient means for supporting the diaphragm in sound boxes, coinpr' 'ng a plians mounting embracing said d1, )lllilglll, and having opposed sharpened hearing edges which lightly engage the opposite feces of said diaphragm in hair lines concenrric with and adjacent to its periphery, and which provides a uniform free space surrounding the circumferential edge oi? said diaphragm; to provide means to rel diaphragm mounting; and to provide 1 ,ns so prevent distortion of the sharpened of said mounting, and to prevent "the adjustment of said retainer, effecting}; excessive pressure upon each of said hearing edges.

The form of siylus mounting herein shown is merely selected for convenience of vilhis r1ration end iorins no part of this in-.

veniion, one is claimed in a separate applicw, 'iion, Serial. No. 579,835, filed August 3-1., 1910.

The form of this invention hereinafter described, provides a sound box diaphragm vvi. 1 a pliant or elastic mouniing which comn-lees n unit-airy annular gasket embracing the edge of said diaphragm, and havin on inle nil-undercut groove, providing a 0 gmnel ruining onnnlar shoulders, the edges or rims of which engage lightly the opposite Ill, inal faces of said diaphragm in hair lines concentric with the periphery thereof; e sound. box casing, providing a sect, don said. morn-ding; and a back plate or cap ior ssid sound box provided with a ch-am'fered end a groove concentric therewith, s; e circular ridge arranged so retain rooming in the seat provided thereior, gaging it, between the innerand outer its lateralwall, thus eliecting the between is and the some n prwsorc centrally around or the soondhon cssing, to @Glflldlfi the geslret Wall, and permitting the margins of said mounting to be distorted into the recesses formed by said groove and chaintfered edge, whereby the sharpened rims or" the annular shoulders lightly engage the opposite faces of the peripheral margin of said diaphragi'n.

This invention further includes all the various novel features of construction and arrangement hereinafter more definitely specified.

In the accompanying; is a side elevational view of a sound ho}; embodying a convenienl; form of this inven tion', Fig. 2 is a central vertical sectional View oi said sound hoX taken on the line 2-2 in Fig. 1; Fig. 3 is an enlarged frag nientary sectional view of the structure shown in Fig. 2; Fig. i is a fragmentary sectional View of a slightly modified form of diaphragm mounting and Fig. 5 is c fragmentary sectional view of another inodified form of mounting.

In theforin of his invention shown in Figs. 1 to 23 inclusive, the sound box casing 7 is provided with the usual circular aperhire 8, and comprises a removable back or retaining cap plate 9 having the hollow boss 10 for its convenient telescopic connection with the goosencclr of the swinging arm or a talking machine, {not shown.) held retraining plate 3 is conveniently secured to said casing? by the screws ll which are in threadedengagemeni with the casing T, and which have their heads preferably countersunk into the exterior surface of said plate. The sound hos casing 7 provides a seal: 12 for the gasket 1A which forms the mounting for the diaphragnrldond which is annular in form, and comprises the internally broad-- ened or undercut groove 16 providing; an air nular rectangular channel 18 forming the shoulders or rims 19 whose opposed she '13-- drawings, Figure l ened edges E20 are formed by the rounded 15 in hair lines, and as shown in Fig. 3,

the inner surface 2% or the outer eral- Wall oi said moon from the circumferential ed diaphragm. 15; the said well 25 having Q go 23 of said outer surfiace so of only sufficient clearance lrie inner Well spaced casing in Fig. 3.

of said gasket. It will 14 to be readily slipped into the seat provided therefor in said casing 7. As best shown in Fig. 3, the mounting 14 is retained in position by the circular ridge 32 which is formed onthe inner face of the retaining plate 9, by the chamfered edge 33 and the circular groove 34 concentric therewith, thus affording an annular bearing projection for engaging the mounting 14 at, a comparatively narrow region centrally disposed between the opposite edges of the lateral face be noted that by reason of the narrow bearing surface of the. ridge 32 which bears upo the mounting l4, suiiicient space is provided by the groove 34 and the chamfered edge 33; upon the respec tively opposite side's'of said ridge for the reception of the portion of the mounting 14 which extends thereover, as best shown inthe fragmentary view Fig. 3, and "ends to prevent the pressure effected by engagement of the ridge 32, from materially broadening theiline of contact, of the sharpened edge 20, with the diaphragm 15, which broadening of contact, if not prevented, would tend to dampen the vibration of the diaphragm. The vibration of the diaphragm 15 is effected by its connection with the stylus needle 37 through the'stylus mounting 38 and stylus bar 39, and it has been found that by reason. of the minimum contacting suface of the mounting constructed as. above described, a greater volume of sound, and 'a clearer tone is emitted from said diaphragm, than from diaphragms wherein the contactlng surface of the mounting is disposed over a greater surface area, or wherein the edge of the diaphragm is not free.

The form of this to 3 inclusive, the mounting 40 with the sharpened edges a1 shoulders 41-2 is provided formed by the and the surfaces 43, which latter conform to the surfaces of opposed Fig.- 5, the mounting 50 is provided with the undercut groove 51 which is formed y opposite 'inwardl curved surfaces 52,

mounting 14, as best shown inthe ph -agm said diaphragm mounting50 is engaged in the sound box casing, the ridge 32 of' the. plate 9 will be disposed oppositeithe. linesof contact of the groove surface-52 with the opposite sides of the diaphragm15, and any pressure of the plate 9'upon saidmounting will not affect the-hairline contact, but

will be effective to distort the i'nounting 50 in the samemanner as the mounting '14:

is distorted, aslshown in Fig. 3.

It is; to b-e-observed that; the groove in the interior face or side of the gasket subinvention shown in Fig. 4 is substantially like that shown in Figs. '1

extending to the be tom of the channel formed: there, y, and is otherwise similar to the dia- It will be noted that when stantially divides the gasket into a base;

groove for the reception of the diaphragm erati've to rigid gagem'ent of said cumferen tial 1S under-cut, that is to; say the groove e2;- tends in a direction parallel to the axis of the gasket and'c'oncentr'ically ot' the gasket, and thus providing in the inwardly extending portions or clamping members above referred to, a region or portion which is more flexible than a portion members nearer the axis or center r in teriorof the. gasket. The said on ercut groove therefore makes a relatively thin.

)ortion in each otfthe inwardl I extendin b portionsabove referred to, which thin portion is, .more flexible, yielding or pliant, transversely of said gasket, than a portion of said gasket. This feature of construction is presentinall of the variousqttiqrms 6r modifications of my invention asfiltustrated in the drawings. I f

It is not-desired to, limit thisinvention to the'preci'se details of construction and arrangement herein set forth, as it is obvious that various modifications may be'made therein without departing-from the essential features of the invention aszdefined in the appended claims. I

aving thus described my inventibh, I

claim and desire to protect by Letters Pat- .ent of the Unitedistatesz- I a 1.111 a sound. box comprising a 'casing, the combination witha diaphragm, of a mounting. for. said diaphragm, "comprisiiw a pliant annulus embracing said diaphragm, and having thegreception of said-margin, formed; by-

opposed transversel y convex 'gimsflenga ge' ing the opposite faces ofsaid diaphragm andprovid-ingairee'space' aroundgtheciredge oit'sald-d aphragrn, and means comprising'a retainer havm fananfi nular ridged region 1 in pcontac't, w th said .moun ting opposite thefhn'e of engagement member nearer the center of the th e-'.margin o a channel. for

so i of said clamp ng or said mouu'tmf gwith said diaphragm op-f 1 said'casing, without varying ne lineen;

12.2 11111:; sound box comprising a casing,

' receive said 'margin,

the combination with a a plant annulus, loosely fitted in saIdcasing, embracing. the margin of said diamounting with' said diay gretain sa'i'd ,mountin in iaphragm, of a -'mounting for said diaphragm, comprising lnra m and havin a channel arran ed to P e g semicircular rims, engaging the opposite faces of said diaphragm, and a wall spaced formed} by opposed girl , substantially opposite the line of engageedgeo'l'f sold L V o hermit, the lateie Wei e11 its inner and outer edges,

merit of said lllfil'lllillilg with solid diaphragm.

in a sound bolt comprising :1 casing], the combination with a diaphragm, of o ii oilnt g for mid diaphragm, comprising i whet embracing the edge of said it and having; opposed bearing rims on phrz in; o, clmmtci edge, centric there no to '10 the opposite tacos of said di=i- 9 and a retaining; plate hav lint o.

mooiitm ce for .oii'mti on, W 1th y prewar rlil-iphrey n' pliant cnrconr in, and nderciit orcntiel tiol edge forming opgom v the ()TllUfil'ii-l oil E: eeid dioo heir to zidimtcot to in; edgg" will ing; cla m 7 "ided with. o circole rail ed to l wed. hot, enlist retain the some i free ridg ge side Well 0 said rid/n tortio'o r v the on .lli oomed 2i comm-lei havinplane we l for. r o a socket and llfir' l euberoiitiall .ci'lli rvolle e cyi poeiteiy di e eidee cit Jeri 4.,7 iridriczil outer wall spoeed. rims eogor the said ogre eo oceet no; plote proi L .1 :1 r1 wronged to eoqooe one plane in re o t iiioiri m; opposite do him ch ll :51

1 l Q l l ing eoid diaphragm, of a pliant comprising a Sflll'l. diaphragm tier-cut chenr'iel forming opposed annular l ire of cont forming semicircular annular rims embroc diaphragm, and retaining means comprising an annular flange in contact with said mounting substantially opposite eoid rims.

box the combination with a mounting therefor member embracing and provided with on on- '?l in 11 sound unit ery abotii'leiits contacting with said diaphragm, and retaining means comprising an annular flange in (:oiit'ict with one side of said mounting eohetontiolly in oliiiemeiit with said abutment;

lit] it sound box the combination with e rm oi: iicxible mounting therefor o limiter rounder member prom1 under-cot choimel the sides chomiel. "'lfrming annular rims emllflpllifiglll near its periphery r with its opposite sides in retaining plate having an ii 1a g 'eiiient with one of the ices 01'? said inoiinti'og substantially opposite the ioee of contact of said mountii with 55 id diaphragm.

9. in e sound boil the coinliiimtion with a casing comprising o cyliiidritmiin socket haviiig; oplonc Well, of diaphragm, a plieiii't mounting for said die 'ihrogjm. having lg id e liClJE in substantially plane lateral wells and a cylindrioel outer walh "and h rims engegio said dierihregm e if and. a, ret iiiilor rid letero :iviolll oppositely diethe opposite sides of uce'o't to its periphery, rig plate provided with an ane 211111152; i to engage one of the oils oi? solid mounting opposite the ct oi": said engaging rims with said diophre in and orreiigl ec'l to hold the other o'l 'd. lateral wells or dust the plane will. oil stud socket. V

10. In it sound box the combination with o casing; compri log a, cyllndrifomi socket l ing a. plane We ll bi e diaphragm, a plimoorsting; ior eoid diaphragm having Lilli 'SUlfJSl'Still-hilly plane lateral wells and; :1V (ii lindrical outer wall, end having; oppositelydisooed rim-e engaging: the opposite sides of said diephromn adjacent to its pei'ipl'iery, and fret 11153; plate prox'idcdwith an onniiler rld e arranged to engage one of the lateral Walls of said mounting; opposite the line of conteci; oi? said ongz'egingz rims with mid dioplireggjin, arranged to hold the other oti said lillG :11 Wells against the plane Wall of said eocketend operative to contact said cylindrical wallet said mounting with the cylindrical Well of Said socket Without altering the line of contact of said rims with said diaphragm.

11. In a sound box, the combination with e diaphragm of a comparatively broad rigid support and a comparatively narrow rigid onnuier support spaced from and upon op With the opposite a substantially circular line only, both of posite sides of said diaphragm respectively, annular yielding means having a comparatively bro-ad, annular surface in contact with saidcomparatively broad support and en-. gaging said diaphragm in a substantially circular line only, and annular; yielding means contacting with said narrow annular support and also contacting side of said diaphragm in said yielding means contacting with said diaphragm and said relatlvely narrow-1 support contacting with said yielding means in engagement therewith in. alinement.

12. Ina sound box the combination of a diaphragm an annular gasket comprising a body portion having a cylindrical outersurfaceand two portions extendinginwardly toward the xcenter of said gasket, one of said inwardly extending portions of said gasket being provided with a channel arrangedconcentrically of said gaskehand ex- .tending in depth in a direction substantial-ly parallel to the axis of said gasket to form athin region in said inwardly projecting portion betweena part thereof nearer the centerof the gasket and the body portion'oif said gasket, a casing having a circular-recess with a flat bottom surface within Which'said gasketsnugly fits with one lateral face s ated against the said bottom surface off'said recess and means secured to said casingand engagement "With that inwardly extending portion of said gasket having the said thin region to press the said inwardly extending portion""a'd acent I thereto toward the other'ofjsaid inwardly prising transversely. I bers adapted to engageopposite sides of a projecting portions of'said gasket.-

13.. A diaphragm mounting consisting of a unitary gasket of yielding material corn' spaced clamping memdiaplir'agn'i, andia base connecting the outer porti'ons'ofsaid 'clainping'members, one of said gclain'pi'me members having ajregion ere tending parallel. to said base which 'is more ,pliable' transversely of said member than a I i portion o'f; said membernearerthecenter'ofi a unitary gasket otyielding material, com-,-

reception of a diaph said gasket, Wherebyitofiatise the aasktto exert localizedpressureon the. diaph ragm.

14."A diaphragm-mounting COnSlStlQg Of' prising abase d;aamvemely' spacedf clamping members iexte nfclin v parallel to" said base andprovid n ing' a regionon outside of said 'grooveextending around said pliable transversely-of said gasket than'a portion of said member-extending substancomparatively tending in depth in a direction gasket being provided s a groove for the, mm", said gasket havgasket, which is more tiallyparallel to said region on the same side of said groove between said region and a tree edge of said member, whereby to pause the gasket to exert localized pressure on the diaphragm.

j 15. A diaphragm mountingconsisting of a gasket, of yielding material adapted to bear againsta side of a diaphragm, said gasket having a weakened region extending around the same which is more pliable transversely of said gasket than a portion of 111,9; a-Weakened region extending around the" I gasket which is more pliable transversely of said gasket'than a portion of said gasket located inside of said region, whereby to cause-the gasket to exert localized pressure on the diaphragm.

17. In a sound boxthe combination, with a diaphragm, agasket of yielding mater-in adapted to bear against a side of therdiaphr'agm, said ga-sket having a weakened re gion extending around the samewhich is more pliable transversely of said gasket than a portion of said gasketjyextending substantially parallel to and located" inside of said, region, and means for pressing said phragm. i v 18. In a sound box the combination of a casing including ahollow'member having a "inner portion laterally against said diasubstantially cylindrical inner surface and an open end and formed With a flat interior Wall facing said end, a unitary gasket of yield ins material having a substantiallycylindrical peripheral surface engaging the inner and flat side faces,

surface of said member, one of which'bears against said will, said w th a groove, a diaphragm seated in said groove, and'means secured to' th e open end of said- "ln testimony whereof, Ir hereunto set my tbi tth. d -s eam s C Witnesses: I i v FRANK B. MIDDLETON, Jn,

CHARLEsF. WILLARD,

in its inner 'E'surface member and' 'bearing, against the other flat-side of said gasket folf pfesslng the same against sald diaphragm- It is hereby certified that in Letters Patent N 0. 1,073,408, granted September 16, 1913, upon the appiication of Albert (J. Diehl, of Camden, New Jersey, for an improvement in Sound-Boxes, an error appears in the printed specification requiring correction as follows: Page 2', line 125, for the Word plant read pliant; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 7th day of October, A. D], 191- I R. T; FRAZIER,

[SEAL] Acting Commissioner of Patents Correction It is hereby certified that in Letters Patent No. 1,073,408, granted September 16, 1913, upon the application of Albert C. Diehl, of Camden, New Jersey, for an improvern'ent in Sound-Boxes, an error appears in the printed specification ret uir ing correction as follows Page 2, line 125, for the Word plant read pliant, and that the said Letters Patent should be read with this correction therein that the same may conforni to therecord of the case in the Patent Office.

Signed and sealed this 7th day of October, A. D., 191 [mg I R. T, FRAZIER,

Acting Commissioner of Patents, I

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