US1123446A - Talking-machine. - Google Patents

Description

A. H. WELKER.

TALKING MACHINE.v

AEPLIGATION EILED HAY 5, 1911.

Patented J'al. 5, '1915.

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2 SHEETS-SHEET 1.

INVENTOR wnNESs'Es =y ATTORNEYS A. H .WELKER TALKING MACHINE.

APYLIGATION FILED MAY 5, 1911 1,123,446. Patenteaam, 1915.

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.ALEXANDER H. wntnna, insensata', catrame, canapa.

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ments in' 'lalking--lvlachines, of which the following is a specification. This in\ent1on relates to talking ma- '10 chines and' 'has reference particularly to 'vices employed lin such machines.

The objectv of the invention isto eEect lcertain improvements in the construction l of fdlr reproduction of the recorded sounds'is obtained. To this end the machine il so the. sound-reprodiicing'and amplifying deconstructed that the, reproduced sounds are sweeter, more mellow and'to a' greater extent free from foreign sounds than .isi-the case with machines of the constructions heretofore commonly. employed.

rThe invention involves the use rality of pipes or resonance chambers arranged in cooperation with the sound-conveying and amplifying passage of the inachine that the sound-wavespass over or into the open ends ofthese pipes. vpipes or resonance-tubes vary in construction as to theircross-sectional dimensions and as to their length; also, some of the pipes 'preferably have their ends distant from the sound-conveying passage closed while others have their distant ends open.-

lre'ferably, the resonance tubes are so arranged that they increase in cross-section toward the exit end of the sound-conveying passage. lVith resonance tubes so arranged,

I have found in practicethat results are obtained whichv are far superior to those -conimonl y obtained heretofore, the superiority being in *the sweetness and purity of the reproduced sounds andalso inv their increased volume. l The invention preferably employed in atalking machine of the type now com- Amonlyv known as a hornless 'which vthe soundfconreying v passage #formed within the cal'rinet oi the machine.

..150 In machines of-this type7 it has been'lcommon vheretofore to make the turns in the sound-conveying passage curved so that thev Y ,sound 'waves-will .pass 'the more readily therethrough. In my; vimproved.mach ine,

- Specicationof .Letters Patent.

. theopen ends of the talking machines whereby a' more faith- -ofthe .machine is niouired. The

, is mounted upon the end of Isage l0 isa sound-refiectm'l machine, inv4 v the casing tothe -front wall thereof.

A and horizontally toward Patented Jan. 5,1915,

vApplicaties mea my 5. 1911. serial No. 625,143.

instead of proif'iding such curves throughout.l

the sound-conveying passage, I employ 'atv one of the turns inthe passage a reflector .for sound-wares upon which those' Waves impinge and by which 'they 'are deflected` in the desired direction.

Vith such' a res..

Hector the sound-waves may 'be readilyv dif. 'i

rected in' suchmanner that they will enter, resonance tubes a't the?l desired angle.

l have illustratedthe preferred embhdi inentof my invention -in the accompanying drawings 1n which- 1. Q L

l .Figure l is a central section ofa'machlne' embodying myinventi n, Fig. .Pais a horizontalv sect-ion through the sound-conveys -J ing passage aboie the ends of the. resonance tuhes and Fig. is a front View of the upper portion of the machine. l

-Beferring to these drawings; l is the casing of the machine7 preferably of rectangular formand having the top thereof a hinged cover Below this cover is a horizontal partition 3 to the under side of which is secured the motor eladapted to drive the vertical shaft upon which vthe turn-table 5 This turntablc'sustains and rotates a sound-record G of disk forni with of the sonnd-reproducer 7.

a. tapering tonearm 8 'whose opposite end is deflected downwardly and is pivotally mounted upon a suit-able bearing 9 secureailfupon the parti@ tion 3. 4

vWithin the casing lis a passageway 10 coirnnunicating with thepiyoted vend of the tone-arm 8 and extending downwardly therefromf' At thelower end of this pas@ made of glass, though-it'may of -wood or any other suitable material. This reflector is preferably positioned against' the rear wall ofthe casing l and horizontally therein.

'the sound-wares is'extended hy a passage 13- disposed'horizontally 'and leading from the' disposed The passage 10 for reflector vll at therear of casing through This passageway 13 -is enlarged both the front ofthe machine as shown. y l

plurality of pipes or resonance 'tubes are combined with the 'parts above dewhich coacts the stylus This repro'ducer 1l p'referdilyl also be made;v

.vertically A scribed, these being so disposed that their I vends project into the passageway for the soundwaves. Preferably the tubes are-so arranged that the sound-waves are deflected upon the ends of the tubes so that more or fless of the sound-waves willenter the tubes.

1n the drawings a plurality of resonance tubes 14 are shown each having one end eX-4 tending through an opening 'in the partition largest.

opposite ends of the'tubes 12, these ends of the tubes being open. The 14 are closed and these ends maybe turned at a right-angle one or moretimes so-that the tubes will be disposed more compactly. The tubes 14 are preferably of vary-ingcross-sectional areas, those adjacent to the outer end of the soundconveying passage'l being preferably the Nearjthe-inner end of the passage 13, the resonance tubes preferably have their lower ends open as shown at 15 in The surfaceofnthe reflector 11. is accurately formed with respect to the relative positions of the reflector yand the open ends of the resonance tubes 14 and 15. The formation in this respect is vsuch that thel sound-waves passing through passage 10 the reflector 11 through the passage-1 3 downwardly slightly upon the en dsofthe resonance more or less of the sound-waves pass into the sound-tubes and cause sympathetic vi# bration thereof.

The sound-waves pass out from the casing 1 through double doors 16 hinged to the side walls of an :opening provided in the I lio positions.

Y about the tubes 14 into communication with the exterior of the which are superior in the purity and front wall of casii'i'g 1.\ An auxiliarydoor 17. may be provided if desired turning on a horizontal f axis and being within the doors 16 when the parts are in theclosed rlhe front wall of the casing be'- vlowY the doors-' 16' may be provided'with doors, as shown. at

and 15 may be thrown casing l.

' The operation of the mechanism con* structed as above described will be readily understood. In practice Ihave found that with this construction volume of the reproduced sounds to those obtained with. machines of this type as now commonly constructed.

Having described my invention,

said vpassageway with opening into the same,

tubes 14 and 15 so that 'said passageway with 18, so that the space tubes being nested results are obtained what 1 claim as Anew therein and desire to secure by Letters Patent of the United States is:

1. A talking machine comprising a casing, a sound reproducer therein, a forwardly-directed vsound-amplifying passageway extending through said casing and connected to said reproducer, and a plurality of resonance tubes located within the casing `and opening into said'passageway, said tubes being of different cross-sectional area and arranged so that thecross-sectional area and length of the tubes increase fromthe rear of the casing toward the exit end' of said passageway, the cross-sectional area of said passageway also increasing from` the rear toward the exit end thereof, substantially as set forth.

:2. A talking machine comprising a casing, a. sound ieproducer therein, a forthe longer tubes bent angularly about the lower ends ofthe shorter tubes, substantially as set forth.

3. A talking machine comprising a casing', a sound' reproducer therein, a forwardly directed horizontally disposed soundamplifying passageway extending through said casing and connected to said reprod-ucei', and a plurality of vertical rescnance tubes located within the casing below their` upper ends opening into the same,

with the smaller tubes to together with the lower ends of the longer the rear, substantially as set forth.`

This specification signe s and witnessed this 24th day of April, 1911.

ALEXANDER vH; WELKER Witnesses:

ARTHUR B. PoLLoGK, J. A. SELLEN.

toward the upper and cross-sectional areas said tubes being of various lengths and cross-sectional area-s,

the rear, and said 10G tubes bent angularly toK

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