US930294A - Talking-machine. - Google Patents

Description

A. KELLER.-

TALKING MACHINE.

- APPLICATION FILED NOV. 23, 1907.

Patented Aug.3,1909

2 SHEETS-SHEET 1.

Patented Aug. 3, 1909.

2 SHEETS-SHEET 2.

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ALE-RED KELEEE orv STE. caoix,

SWITZERLAND, ASSIGNOR TO MERMOD CROIX, SWITZERLAND. I

FRERES, or STE.

TALKING-MAGHI'N E.

Specification of Letters Patent.

i Patented Aug; 3,1909..

.Application ied November 23, 1907. Serial No. 403,435.

in talking machines, and has particular ref-- erencel to the mechanism.

Certain features of construction, vnotably the clutch feeding mechanism, .are'froma broad standpoint disclosed in'my prior applicatiomserial No. 395,945, and is broadly claimedtherein.

producing and magnifying 3 In the accompanying. .drawings have.

shownonly such .parts of an instrument `as are necessary to a full understanding of the invention- Figure iis a verticalsection cfa portion of I the sound arm and support therefor; Fig.'2

isa .plan-view of the sound arm tand'sound box or reproducer; Fig.: 3 is la gplan viewof certain features of construction; Figi., 4 :isa

plan viewl of certain `other 'features of con` struction; Fig. is a plan view of the friction clutch.

1 is the sound arm, thesamebe'ingbf bottle-shaped outline. .This sound garni `is hinged at 2 (Fig. 1) to 'the elbow 3', which- .'forms a continuation thereof. v 4 1s an upward extension fronrtheelbow ist 3 arranged to carr\r the usual liorn or soundy.magnifying device (not shown). 5 is a bracket carried 'by the ca A tension, making suitable'connection there- 'f--f In the constructlon shown-the upper partof the' elbow I3 is mounted to rotate in the I .Llowerside of collar 5a,

with, as by a collar 5a; I

4 5 6 is a. ivotal support forthe lower end 'of the el .ow 3, the sametaking into a suitablei'bearing 7 thereon.

8-is an upper pivotalsupport, the same projecting into a'skeleton frame or spider 9 5o xed in thel elbow 3. This pivotal su port S is carried b v, acorresponding lske eton' l l more satisfactorily. 'By making the .arm

bottle-shaped all angles arevavoided, thereby. offering less resistance to the sound waves. 51,10.

frame or spider 1() carried by "collan'fd 11 is'a clutch com using `two plates carried by a driving sha t12 driven-'from any` suitable source of power (not shown), bc-f (not l shown) of the talking machine, anni which' f --affords a support'for the' soundv arm and ex-l tween which plates is a friction washer 13 havingaslotted extension arranged to embrace a bearing 14 carried by the elbow 3. Obviously, as the shaft 12 rotates, it will, through the medium of the clutch 11 and .friction washer 13, rotate the elbow 3 and thereby the sound arm 1.

At .the free end ofthe sound arm 1 fis a' sound box 15 carried in any suitable manner, for example by means of a U-shaped tubular extension 16, which is slidablethrough an extension 17 onthe sound arnrl.

18 :is albuffer spring which is carried by one ofthe parts .1 or 3 and arranged to bear against the other part. form shown, this buffer `spring 18 is carried by part 1 and is arranged to takeupagainst In Athe' particular ran abutment 1.9 on .the elbow 3 soas to carry part of the .weight of the arm 1 and so asto check concussion -when .the arm descends. T hisspringatension 18 lmay be varied ,or may beadjusted by .any suitable means, for example by meansof .ascrew 2(),.such as shown in ,the drawings. -The shaft 1'2 is driven in any suitable manEer'frOInthe motor of the talking machine, such as described in .my

copending application, -Serial No.v 359,945,

filed .October 4,.,19'07f1and 1always moves at ya speed so proportioned thereto that the Vsound box 1-5 .wlllbejcau'sed iso-traverse d1'- ametrically the record (not shown) at the proper speed to follow the jspiral .groove therein..

`inasmuch as some records vary from others in the width of the space. between the grooves, itis desirable to have means to comensatcv for this variation, whereby the feed-` mg mechanism will be adapted to the various- 'grooves This may-v be accomplished by shifting the extension 17 on the arm 1 toward or farther away from the axis of rotation of the elbow 3'. vWhen the desired adjustment is eected, `the extension 17 may be locked i on the arm 1 by means ofthe set-screw 21 moving in a slot 22 in extension The bottle-shaped sound arm is'of great advantage 'in that it serves in a way the 'function of a sound-magnifying device intermediate the sound box'15'and the usual lhornY By thus offering less resistance to the sound wavesthe record -1 s"reproduce`d much Wellknown, Isound waves h vea soundA arm 1 whichiincreases tendency ex and asthey' proceed fron'i" y. providing this tapered-y their source.

radua ly in diameter, ironia point from c osev to the` source of the sound waves, the latter'are-inl a sense gradually released so that they maymore readily adapt themselves to natural tendencies. In ot er words, by this arrangement less resistance is afforded to the sound waves and the danger of clashing is very largely avoided. In fact, by this arrangement the magnifying and development of the sound waves begins' to' occur almost, immedi-l ately after said waves'leave the sound box.

Vlfh'at 'I claim is:

1. In a talking machine, asound conveyl iig devicecomprising a sound arm, an elbow,

a bracket pivotally connecting the sound arm with'the `top of the elbow; 'a driving shaft loosely pivoted. to and supporting the bottom of thevelbow, and an eccentric connection between said shaftand elbow. 2. In a talking machine, a sou-nd conveying device comprising an elbow, a sound arm hinged thereto, a bracket pivotally supporting the top of the elbow, a shaft operatively connected with the -driving mechanism 'and ivotally supporting the bottom vofthe el-v how, and a connection between said shaft and elbow, including a friction disk. 3. In a talking machine, a sound convey:- ing device including a soundbo'x, a' sound armextending therefrom and increasing in diameter in a direction away from said box, and a loose pivotal support for the outer end of said sound arm, and a friction driving clutch. carried by said ivotal support and a connection between said sound `arm andsaid clutch.

a sound conveyarni extending therefrom 'and increasing in diameter in a direction away from said box, apivotal support for the ou'ter end of said sound, arm, and a frictionally driven means to swing said sound arm around the axis of its saidl sup ort.

5. In a ta ing machine, a sup ort for the sound producing mechanism, saiiilsound producing mechanism including a sound box, a soun'd arm carrying said sound box, an elbow on said sound arm, a bearing for bearing for said elbow.

6. I-n a talking machine, a' s sound producing mechanism, sai sound prod ucing mechanism'ilicludinga sound box, a

4sound a'rm carrying said sound box,-ari elbow on said'sound'aim, a bearing for'said elbow in said support, and a driving-mechanism for said sound arm concentric with the bearing for said elbow, said sound box being adjustable longitudinally onsaid sound arm, said driving mechanism including a Vfriction clutch.

said elbow .fv in saidsupport, and a friction driving mechanism fonsaid sound arm concentric with the p port for the e -7. In a talking machine, a support for the y sound producing mechanism, said sound pro'- ducmg mechanism including a sound box', a sound arm carryingsaid sound box and 1ncluding 'a horizontally .curved'and hinged pposite end and having a

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