US1336492A - Phonogbaph - Google Patents

Description

A. E. TEAL. PHONGGRAPH APPLICATION FILED Mmm A. E. TEAL.

PHONOGRAPH.

APPLzcATmN men MAR.24, :919.

1,336,492, Patented Apr. 13, 1920.

2 SHEETS-SHEET 2.

` a phonograph havingr an outer wa .ARTHUR-E. TEAB. OF WALKER TG'WNSHIP, KENT COUNTY, MICHIGAN.

PHONOGRAPH.

To all whom t may concern Be` it known that I, citizen of the United Walker township,

ARTHUR E. 'IEALLa States, residing 1n in the county of Kent. and

i State of Michigan, have invented new and useful Improvements in Phonographs, ot which the following is a specification.

The present invention relates to phonographs; and an object thereof is u phonograph improved in various eatures` of construction; a further object is to provide a phonogra h havingl improved resonantqualities; a urther object is to provide l sutiiciently strong and igid but nevertheless vibratile under the action of sound waves: a further object is to provide in a phono- "graph an improved sound amplifier; a fur ther object 1s to provide in such an am plifier a plurality of branches so disposed interrelatively that the sound waves issuingY therefrom intersect and blend; a further objectis to provide a phonograph wherein the vibratile outer Wall of the phonograph forms a wall of the amplifier; a further ob- 'ject is to provide an amplifie]I having a middle and side branches; a further obect is to provide an improved valvc'for governing the volume of sound. issuing from the anipliiier; a further object is to provide an improved counterbalancing device for the hinged cover of the cabinet.

These and any other objectsl hereinafter appearing are attained by, and the invention finds preferable embodiment in. the structure hereinafter described and illustrated by the accompanying drawings, in Which:-

Figure 1 is a central vertical section of a phonograph;

Fig. 2 is a sectional 'view of the same taken on a horizontal plane corresponding to line A-A of Fig. 1;

Fig. 3 is a central section oi the same taken on a vertical plan(` corresponding to line B-B of Fig. 1; and

Fig. 4 is a section of the same taken on vertical planes corresponding to line (--C of Fig. f

In the embodiment of the invention chosen for illustration by the dravings and for detailed descri tion in the body of this specification, the p ionograph has a cabinet or casing circular (or substantially so) in horizontal section. In an annular groove 1 in the cabinets bottom 2 and in n like Specification of Letters Patent.

Appliation Ied March 24, 1919. Serial No.

to rovidel Patented Apr.13, 192e.

i groove 3 in the partition 4 intermediate the bottom and the top of the cabinet, the edges of the lower section 5 of the curved side Wall of the cabinet are securelyseated, while the lower edge of the arcuate upper section 6 ot the side wall is similarly Seated in the annular groove 7 in the upper side ot' said partition, the ends of this arcuate inem-V her being securely connected to a hingesupperting member 8, such connection of one end of the arcuate member being indicated in Fig. 1.

|The record support or turntable 9 abovf` the partition liis rotated by suitable means (notshown) in the chamber 10 below the partition.- The swingable tone arm 11 carries suitable sound reproducing means (not shown) and communicates through a sound passage 12 in the partition with the horn .or sound amplifier which comprises a vertical member 13 and branches leading therefrom through orifices 14. 15,` 16 respectively. The middle branch 17 has side Walls 18. 19. and the outer or side branches 20, 21 have ,inner Walls 22. 23 respectively (see Fig. 2). :their outer walls being parts of the curved vouter wall of the cabinet itself. The mutually adjacent Walls 19. 22 and 18, 23 of the lside branches andv of the middle branch are in nonparallel relation y spaced apart by the spaces 24, 25. The lower section 5`ot` the cabinets outer wall has an opening 26therethrough, which may he lilled by a preferably removable |grille 2T, through which opening the sound waves pass from the phonograph. It will be seen (particularly in Fig. 2) that theY side branches of the amplifier curve towardyeacll other toward their mouths. so that the sound Waves issuingfrom all the branches intersect and blend at the mouthsrof the branches. This provision has the effect of modifying' and softening the tone which leaves the instrument and strikes the ear.

The upper Walls 28 of the side branches curve upwardly (as particularly shown in Figs. 1 and 4) so that the sound therein gradually Widen towar their mouths in a vertical direction and also in a horizontal direction as seen in Fig. 2. It will be seen that the walls of the ampliiers branches. as Well as the walls 29, 30 contain-| passages S5 and are respectlvelv having a lever arm 33 for swmguig il la located in the mam or vertical porion of the amplifier. This valve is out away at 34. utljucentithe opening 14 into the nml- 'rlle braucht 7 so as to provide a pa togo in the valve rough which sound waves will pass in antposition of the Valve and porticularly i o the middle branch 17. The valve be swung torina-ense or diminish the volume of sound passing to all the branches by merino of a handle 35 extending through and Slid'ble in a shit 36 iu the por tition` 4 and having a link 5l? eonnecterl to the valves lever arm.

cover 38 hinged at iii* to the lungo-surf porting'memher 9 at the rear of thrfuhiuvt may be opened to expone the reeori support, ete. A counterbuluncing device for the opening and closing rover is providerl oomprising the rod or plunger 4U vertically movable and connected et its lower end to the lever arm 4l fulrrumed at 42, which arm is spring-pressed at 43 in the flircvtion of the eovers opening movement. The upper end of this plunger is pivoterl at t4 to link 45 pivoted at 46 to the rover inwardly from the hinge 39.

t will he seen that in the olosecl position of the cover this Springl is under increased tension and that as the @over opens the ten sion is lessened. willfhen the cover is moved to fully` opened position, (shown in elotterl lines in Fig. l) the pivot; l?) prinses between the hinge and the longitudinal axis oi the plunger and tho rover is thus hohl ngz-linut falling shut; and when the rover is swung lo closed position.` sairl pivot 46 passes to he opposite side-of the plungers saill uxie.. he showin e pair oi' those pluugers` oir.. are p referalil y provi fled.

The valve 3l is preferably ot' ivooil anrl umile by {,g'lu'inf;r two disks` l?. il* together with the Spindle 49 between themY lt will be Seen that the mauuaily olieraterl meam for turning the valve is loruterl insifle the cabinet.

A sound dofieotor 5() is located at tho hot tom of the main portion i3 of the siounil empllei:q und has surfaces 5i, 52 curving from a middle ridge 53 toward the sirle branches respertivelv of the amplifier. and also a surface 54 ourving toward the mid-- (lle branch. Vfhen tiw valve is tin-neri on its spindle 49 to open position, the erige ol the valve approximately fils-1 the apex oi tlm ridge as seen in Fig. l.

The invention being intonlled to he pointecl out in tht1 rianne. is not to he limited to or hy details of roiietrurtion shown or rirscribed,

l claim:

l.. In a phonograph: sound reproducing moans; :i toni1 arm; a. sound aniililiiier lealiing from thu tono arm, and having bronches so intorrelativoly Liiel'ioseti that the sound Waves issuing from one branch. iutrrsrrt :irai iilenil inside the amplifier with thune i Y in; from the other branch, the mutualiy ailier rent aides of the ln'anrl s bring in non-pariallel relation and their inner enrfares heilig;

convex.

2` In a phonograph: sound roisroelucinp; means; a tone arm; a sound amplifier leali ing from the tone' arm. und having; hranrhes so interrelatively rlisposeri that the sound waves issuing from one branch intersect and blend inside the amplifier with those isuing from the other lirai1oh,.tl1e mutualy allieY ront wulhi o? the iii-anche. heling Spnref eport anal their inner Sur being oonvex,

it in a phonograph; wund reproeluoing' 1x1-earns; e, tone arm; a sound amplifier iet-.oing; from the tone arm, :nifl having n i'niriille branch and side branehescurving toward each other toward their mouths, the branches being so interreiatively rlisposerl that the sound 'waives issuing therefrom intersect azul blend.

4. ln :i phonograph; sound reproducing means; a tone arm; a sound passage leading from the tone arm; a viin-fati-le curved outer wall oi.i the monograph ronstituting a Wall of the muori menage and extending beyond the inner Wall of the :impliiien 5 ln a phonograph: sound reproducing means; a caong containing the saine; a rec.

ord. support within the casing; partitions within the casing end so disposed as to form chamber beneath the record support adapt erlv to contain means for moving said nupport` and to form algo :t sound amplifier having a middle branch and side bra-hohes curving toward each other toward their mouths.

il. 'in a phonograph; sound reprodnoing means; a casing minteining the onine intl heing;r substantially circular in horir-orztiii tion; :i record support within the uri-einge, partitions within the mining'. and So disposing to form a Chamber beneath the recor support adapted to contain means for movingr Suifl support, and to form also a, sommi amplifier having a, middle branch sind side hmm-hes curving toward each other towrd their months,

i'. In a phonograph; sound reproducing means; a casing containing the Same ami heingr snhotantially eiroular in horizontal ser tion; u record support Within the easing;

partitions within the casing und so disposed as to form n Chamber beneath the record support adapted to contain means for moving said support, and to form also a -qound amplifier having a middle brunch beneath the chamber und Side branches curving npwnrdly above the top of the middie. hranoh und toward euch other toward their mouths.

8. Tn u phonograph; sound reproducing means; n casing containing the saune und be` ing substantially circuler in horizontal section; u. record support within the casing; partitions within the easing und so disposed as to form n chamber beneath the record support adapted to .contain means for moving said support4 and to form also u sound amplifier having a, middle branch und side branches .spared from the middle brunch hy non-pnrallel Walls und curving' town rd eat-h other toward their months.

ll. In n phonograph; sound reproducing means; :t tone arm; n sound nmplilier leading' from the tone n rm nml having n moin portion und a middle lmnorh and side branches; a vulve in the 11min portion having :in opening ndjm'ent one brunch and4 being movable to gm ern the volume of sound passing' to all the branches.

I0. In a phonograph; sound reprodliuing means; e tone arm; a horizontal partition carrying the tone nrm und having a. sound )tissage therethrough. n sound amplifier below the partition und lending from the tone. arm und Suid passage .find com rising :t yertienl main portion und n mid le so'\1nr1"`f]is 35 main portion havingsurt'wes curving from 45 o middle ridge toward the side lirnswhes, re )eotively und :l enrfm'e curving toward t e middle brunch: n vulve in the moin por` tion turnuhle on :In axis disunetrioal to the main portion :md whose edge in the open,50

position of the valve zipl'iroximntely tits the apex of sind ridge.

In testimon whereof l have hereunto set my hond at .rand Rapide. Michigan, this lSt day of March, i919.

ARTHUR E. TEAL.

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