US1356599A

US1356599A - Sound transmitting

Info

Publication number: US1356599A
Authority: US
Publication date: 1920-10-26
Anticipated expiration: 1937-10-26

Description

6.1. CARLISLE.

SOUND TRANSMITTING APPLIANCE.

APPLICATION FILED AUG.6]1919.

Patented Oct. 26, 1920.

W l l i Zlll UNITED STATES GEORGE J. CARLISLE, OF CHICAGO, ILLINOIS.

SOUND-TRANSMITTING APPLIANCE.

Application filed August 8, 1819.

To all vi i/om. it may concern:

Be it known that I, Urnonon J. CARLISLE, a. citizen of the United States, residing at Chicago, in the county of Cook and btete of Illinois, have invented certain new and useful Improvements in Sound-Transmitting Appliances, of which the following is a specification.

My invention relates to improvements and features of novelty and structural and functional advantages in sound recording and reproducing appliances. such for example, as phonographs, dictephones, etc. When employed with sound reproduction devices its main object is the provision of airspparatus of this character which will faithfully present the recorded sound from a record with adequate volume, true tone values, di-licate shadings of expression, and Without rasping or scratching intrusions which are fully suppressed or mute-d. A further object or purpose of the invention is the produ tion of an appliance of this type which will reproduce sound accurately and 26 with proper amplification and volume from all s es of phonograph records, both lateral out] vertical cut. An additionalsalient feature oi the invention is improved and novel for modulating or changing the 30 volunu: or intensity of the sound without interfering with its character or mmilifying its quality or timbre. To the accomplishment oi these and other desirable ohjects various cooperative stru tural features are 85 incorporated in the soundhox, in the diaphragm and its mounting, and in the. stylus device for transmittingthc vibrations to the diaphragm.

In order that those skilled in this art may have a full and complete understanding of the invention and its various advantages I luslratcd in the accompanying drewings, forming a. part of this specification, e preterm-ll and desirable embodiment of the some. like reference characters referring to the sanu' parts throughout the various views. In this drawing: Figure 1 is an elevation of the improved appliance:

Fig. 2 is a section on line 2-2 of Fig. 1;

Fig. 3 is a bottom face view of the structure showing the mounting of the needle or stylus: F g. l lur-vs the struolur'e With one portion. 1. the casing or shell removed, illus Specification of Letters Eatent.

Patented Oct. 26 1920. Serial No. 815,606.

trating the construction of the embossed or ribbed diaphragm more clearly;

Fig. 5 is 3, face view of the slide for controlling the opening and closing of the epertures in the diaphragm casing or soundbox;

Fig. 6 is an enlarged fragmentary detail section, illustrating the internal cavities in the sound-box, the diaphragm, and its gaskets;

Fig. 7 is an enlarged section of the mounting for the vibratory or rock plate carrying the stylus; and

Fig. 8 is a perspective view of the adjusting mechanism for one of the fulcrums.

Referring to the drawings it will be perceived that the embodiment of the invention shown therein. comprises a sound-box or diaphragm shell or casing including two parts 10 and 11 held together or in assembled relation by any approved means, such as one or more screws. The part 10 of this hollow shell has a central aperture 12 couinninicating with a. tone-arm or sound-50 transmitting tulle 13 of the usual type. a portion only of which is shown in the drawings. Around, the outer side portion of such member I provide it plurality of enlargements or hosscs H; (in the present instance six) which inside of the shell or casing supply corresponding spaced recesses or cavities 15. The companion hell-member 11 is similarly equipped with an equal number of outstanding projections 16 forming internal cavities 17 in register with the recesses 15'.

The thin disk diaphragm l8. desirably of nit-tel, spring brass 'l' or instance. coated with,

a relatively soft material such as beeswax to eliminate any metallic sound. is preferrihly provided with a series of integral hollow ribs 19 struck up or embossed out of the body of the shoot of metal and radiating from the center thereof to some what stiffen such central portion of the vibratory diaphragm to enihlo the soundtransmitting; member 20 connected to its router in the usual way to art over a. greater middle area of the diaphragm rather than merely at its geometric center only.

The flat peripheral or circular unribbed or uncmbossod margin of the diaphragm is held between the two cooperating companion parts of the sound-box or shell between 'a pair ol' circular gaskets 2i and 22. de-

sirably nlllilll rubber tubes 23 equipped in,-

to the tone-arm.regardless of the type of rec ifd used may be varied by shifting the pos l'rion of plate 31 so .as to open or close -moreor less the apertures 32 in the diaall'c ifiperate and interact to reproduce the recorded sound with fidelity,

suitable volum' ind adjustable intensity. It will be ob served'that the vibrations are imposed endwise on the spring 20 which transmits them side vise or at right angles thereto to the dia iragm.

heroes, in this application and the accompany ng drawing,

a single simple embodi nenliof the invention has been presented a shell constituting a sound-box,

ans

the latter having a it will be understood by those skilled in this art that the invention is not limited and rdstricted to such embodiment but is capable of i: corporation in appliances of this general typ but of radically different structural features. Stated somewhat differently the invention is not restricted to the precise and exact features of construction resented becatise these may be. changed wit in comaratively wide limits without departure roin the substance of the invention and without the sacrifice of any of its substantial benefits and advantages.

I claim:

1. In a sound-transmitting appliance of the character described, the combination of a shell constituting a sound-box having a plurality of internal cavities, and a vibratory diaphragm nfounted in said shell, substantially as described.

2. In a sound-transmitting appliance of the character described, the combination of and a vibratory diaphragm mounted in said shell, thelatter having a plurality of internal cavities on both sides of the diaphragm, substantially as described.

3. In a sound-transmitting appliance of the character described, the combination of a shell constituting a sound-box, and a vibratory diaphragm mounted in said shell, lurality of internal cavities located to a ord passages around the edge of'the diaphragm, substantially as described.

4. In a phonograph, the combination of a shell constituting a sound-box, a tone-arm connected to said shell, a vibratory diaphragm mounted in said shell, the latter having a lurality of internal cavities locsited to a ord passages around the edge of the diaphraglm, whereby the air pulsations from both sites of-the diaphragm are transmitted to said tone-arm, and means connect- .against which ed to said diaphragm adapted to coact with a sound record, substantially .as described.

5. In a sound-transmitting appliance o the character described, the combination of a shell constituting a sound-box, a vibratory diaphragm mounted in said shell, the latter having a plurality of internal cavities adjacent to the edge of the diaphragm, and a gasket between said shell and diaphragm against which the latter bears, the gasket bridging said cavities, substantially as described.

6. In a sound-transmitting appliance of the character described, the combination of a shell constituting a sound-box, a vibratory diaphragm mounted in said shell, the latter having a plurality of internal cavities adjacent to the edge of the diaphragm, a gasket between said shell and diaphragm the latter bears, the gasket bridging said cavities and comprising a resilient tube with a stiffening wire through its bore, substantially as described.

7. In a sound-transmitting appliance of the character described, the combination of a shell constituting a soundbox, a vibratory diaphragm mounted in the shell, the latter having a plurality of internal cavities located to afford passages around the edge of the diaphragm, gaskets on opposite sides of the diaphragm between the latter and the shell, said gaskets bridging said cavities and being formed of resilient material through the bores of which extend reinforcing or stiffening wires, substantially as described.

8. In a soundtransmitting appliance of the character described, the combination of a shell constituting a sound-box having a plurality of internal cavities, and a vibratory diaphragm mounted in said shell, the latter having one or more apertures through its wall leading directly to the outer air, substantially as described.

9. In a soundirnnsmitting appliance of the character described, the combination of a shell constituting a sound-box having a plurality of internal cavities, a vibratory diaphragm mounted in said shell, the latter having one or more apertures through its wall leading directly to the outer air, and adjustable means governing the cxthnt of opening of the aperture or apertures, sub stantially described.

10. In a phonograph of the character dcscribod, the combination of a shell constituting a sound-box having a plurality of internal cavities, a vibratory diaphragm mounted in said shell, a tone-arm connected to said shell on one side of said diaphragm, the shell having one or more apertures to the atmosphere through its wall on the opposite side of the diaphragm, and means to vary the extent of opening of the aperture or up ertures, substantially as described.

11. In a phonograph of the character deswiii cd, {he fionzbinziiion of :5: shall cnnstitut ing :1 soundbcix, a vibrato diaphragm mounted in said shulL s tnm-urm connected u; aid she mi nun side uf said diaphragm, 1M siwll having :1 piuz'siiiiy M interlmi cuvihis iuczued afford 1m. es around [he wigv of the diaphragm and U1lior more openings tn the atmnsphnre through its wall on the side (if time diaphragm opposite said tmw arm substantizziiy described.

In a pimnugrapii w lim: 1' Fatimdescribed, the UEHFlifiii'hUEHI] !If n s nnstiiut ing :1 sound-box. a ."ii iiiiui diaphragm munted m said six-11, inns-arm (animated to said size (In one sidv mi said diaphragm tho slmii having: :1 pin! uf iuhjl'llfli cnvi tics lwcaawd tn niiurd 1 issn ges around the edge ni the? din m and me or more 05x 1.

w s in the ii illbupiii iii i1 (nigh its wall on. the side of the diaphragm opposite said tum: arm, and means to vary the"extent of opening of said aperture 01' apertures, substantially is described.

13, A snund-transmitting applianceinminding in combination a, vibratory diaphragm, a vibration-tramsmitting leaf spring bearing between its ends on said diaphragm, and means u impart sound vibrations endwise in said spring, substantially as dosvribcd.

14. A sum]( l-transmitting appliance including in combination an vibratory disphmgrn a. bnwed vibration transmitting leaf spring hearing between its ends on said dilpillalglll, and means t0 impart sound vibrations sndwise to said spring, substanmany as described.

GEORGE J. GARLISLE.