US1115374A - Sound-box. - Google Patents

Description

J. W. AYLSWORTH. SOUND BOX.

APPLICATION FILED APR.20, 1911.

1, 1 15,3?4. Patented 0011.27, 1914.

nisrrio sra rns Parser orrren oer-ms w. AYLSWOR'IH, on nest! ensues-New mnssr, assrenon, BY MESNE as SIGNMENTS, TO NEW JERSEY PATENT COMPANY, 93 WEST ORANGE, NEW

J'EEEEY, .Ei CURPOMTION Gi NEW JERSEY.

sounninox.

v Bpccificadon of Letters Patent.

Patented est. 2?,

Application filed April 20,-1.911. Serial no. 622,412.

- iimitdto that type.

I With reproduce'rs commonly in use, the tracking of the record groove by the stylus the emission of minute scratch vibrations which greatly impair the quality of the reproduction. It has-also been found that 4 .n stylus is rigidly connected with the diaphragm excessive loudness is given to some oi? the vibrations ..t is the )I"iDCiPz1l (;lij6C of my invention to pr vide sound box. free from these obiect a; and in conformity with this object, it 1: e emnposite stylus arm having in- 'terposed between the sections thereof an elastic yielding substance which will absorb the minute scratch vibrations and which Wlll the same time retard or dampen the excessively loud vibrations.

Another object of my invention is to pro vide adjusting means whereby the loudness of the record may be modified and variations in the set of the diaphragm compensated for.

Qthcr objects of my invention will appear more fully in thefollowing specification and appended claims.

in order that my invention may be more fully understood, attention is hereby directed to the accompanying drawings forming a partof this specification, and in which- Figure 1 represents a side elevation of a sound box embodying my invention; Fig. 2 represents-a front elevation thereof, the connection between the two sections of the stylus arm being shown in central longitudinal section; Fig. 3 represents a fragmentary sectional view taken on the line 3-3 of Fig. 2; F represents a fragmentary side elevation partly in section of a modification; Fig. 5 represents a front elevation partly in section of the stylus arm shown in Fig. dyand (i represents a similar View of still another form. of stylus an In all the views like parts are designated I by the some reference numerals.

Referring to the drawings, the diaphragm l is mounted in any suits his ay in the easing or support 2, the latter being provided.

with a 'rearwardly extending hollow neck 3 adapted to be connected with any suitable sound conveyor. Connected to the diaphragm substantially centrally thereof is a. composite stylus arm having an upper section 4 and a. lower section 5, the latter being provided with a socket 6 adapted to receive a stylus 6.. A. set screw 7 serves as a means for securing the stylus 6 in place in the socket 6. support, a bracket 8 provided with forwardly extending parallel lugs 9 is secured in any suitable mannerto the casing 2, the

For pivoting the stylus arm to the lugs 9 being each provided with a. threaded aperture 1n which is adyustably mounted a pivot screw 10. These screws are located in alineinent with each other and are adapted to pivotally support the stylus arm in a manner that will be hereinaitermore fully set forth. I To obtain the best results, the diaphragrn should be made rather sensitive and the arm of lightest weight consistent with proper rigidity.

In the form of my invention shown 1D.

Fi s. 1- 2 and 8 the section at of the st" his {3 7 arm has approximately the shape of an in verted T, the laterally extending arms 11 thereof being cylindrical in shape and being surrounded by cylindrical bushings 12 of rlibber, cork, felt, or other suitable elastic yielding material. The lower scctionoit the stylus arm has approximately theshape er a Y, the upper portion. of the said section be ing' curved back upon itself to provide cylindrical sockets 13 respectively engaging the outersurfaces of the corresponding bushings 12, and extending thence into a lip l l parsilel to the body of the section ,5. The ver- 'tical portion of the member t is located in the space between the inclined arms of the member 5. In order to secure the sections of the stylus arm in. proper relative adjustings 1.2.

@ iniaeva ment with the axes of the arms 11 and engage the other ends of said arms to pivotally support the stylus arm. The composite arm described above normally vibrates as a whole, the vibrations being transmitted through the yielding or elastic bushings 12 to the diaphragm. During such vibration, however, tile objectionable minute scratch vibrations are absorbed and the excessively loud vibrations are dampened by the bush- By adjusting the set screw 15, the loudness of the reproduction may be regu latcd and variations in the set of the dia-- lira 'in ma be com -ensated for.

the stylus arm is provided with flat lateralfaces located between the parallel arms or lugs 17 of the low-er section 5 A lat piec of elastic yielding material such as cork, rubber or felt is interpobetween the in nor surface or each oit' t. e arn'is 1.7 and the opposing face of the section 4,, the pieces 18 serving to yielding 1y secure the sections i and 5 together. The pivots 12 engage the outer lateral surfacesoi the lugs Y to pivotally support the stylus arm. The op eration of this modifica l -n is similar to that of the form of my invention shown in Figs. 1, 2' and 3.

The modification u nvn in Fig. 6 diil'ers from that shown in lugs. 1, 2 and 3 in the employment of cupsliape bushings 1.2 and sockets 13' in place. of cylindrical bushings l2 and sockets 13 shown in Figs. 1, 2 and 3. The bushings 12 surround the ends of the arms 11 respectively are closely surrounded or inciosed by the sockets 13 so th at the sections of the stylus arm are held together with sufficient firmness to normally cause the vibrations of the arm'as a Whole, but to permit the busliings 1,2 to absorb the objectionable scratch vibration and to darn: c the excessively loud vibrations. in modification, the pivots 1O engage the outer closed ends of the socks 13.

It is to be noted tliat'inall oi the forms of my invention herein disclosed, the sec-- tions oi the stylus arm are entirely out of contact with rigid portions of eacb. other; so that during the relative movement of the sections, no scratch or other harsh vibrations are set up by friction or impact between the sections.

While l. have shown certain preferred enibodimcnts of my in ention, numerous changes may be made tnei'ein without departing from tlie sp'iit of my invention; and I wish, therefore, not to be limited to the exact details sliown and described,

What I claim as new and to secure by Letters Patent of the Unite States "follows 1"- l. in a sound box, the combination of ibratory means, a support therefor, a stylus In the modification shown in Figs. 4 and 5, the lower portion the upper section of arm connected With said vibratory means,

said arm having a plurality of movably connected sections, yielding means interposed between said sections, and means for regulating the pressure of said sections on said yielding means, substantially as described.

9.. In a sound box, the combination of vibratory means, a support therefor, a. stylus arm pivoted to said support and connected with said vibratory means, said arm having a plurality of pivotally connected sections, yielding means interposed between said sections, and means for regulating the pressure of said sections on said yielding means, substantially as described.

In a sound box, the combination of vibratory means, means for supporting the nine and a stylusarni connected with said vibratory means, the said arm having a plurality of sections provided With means for connecting the same, the said last named means comprising a. pivot, a socket therefor provided with a. bushing of yieldable material, and means for regulating the pressure between said socket, bushing and pivot, substantially as described.

In a sound box, the combination of vibratory means, a support therefor, and a stylus armpivoted to said support and con- 'necijed ith said vibratory means, said arm having a plurality of sections provided with inc-ans. for coni'iecting the same, the Said last named means. comprising a pivot, a, socket therefor provided with a bushing of yieldable material and means for regulating the pressure between said socket, bushing and pivot, substantially as described.

5. A. stylus arm having a plurality of sectious provided with means for connecting the same, the said means comprising a pivot, a socket therefor having a. bushin of yieldablc material and means for regiilating the pressure between said socket, bushing and pivot, substantially as described.

In a soundbox, the combination of a. diaphragm, means supporting the same, and a stylus arm ivoted to said supporting "means for osci lation about a. given axis, said arm. having a plurality of sections movable relatively to each other about said axis, and yielding means interposed between said sections, substantially as described.

.7. In a sound box, the combination of a diaphragm, means supporting the same, a

stylas'arm pivoted to said sup orting means for oscillation about a given axis, said arni having a plurality of yieldingly connected sections movable'relatively to each other about said axis, substantially as described.

in sound box, the combination of a diaphragm, means supporting the same, a

stylu rmpivoted to said supporting means t'or oscillation about given axis, said arm baring; pluralityof sections movable relatively to each other about said axis, yielding of contact with rigid portions of each other, yieldingmeans interposed between said sec tions, and means for regulating the compression of said-yielding means between said sections, one of said sections being adapted for connection with the center of the din-- phragm and another being adapted to support a stylus, substantially as described This specification signed and witnessed this 18th day of April 1911.

JONAS W. AYLSVVORTH.

Witnesses:

FREDERICK BACHMANN, ANNA R. KLEHNN.

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