US1701450A - gordon-gumming - Google Patents

Description

Feb. 5, 1929.

M. W. GORDON-CUMMING MULTIPLE RECORD MACHINE Filed June 22, 1926 4 Sheets-Sheet 1 Feb. 5, 1929.

M. w. GORDON-CUMMING MULTIPLE RECORD MACHINE Filed June 22, 1926 4 Sheets-Sheet 2 4 Sheets-Sheet M. W. GORDON-CUMMING MULTIPLE RECORD MACHINE Filed June 22, 1926 Feb. 5, 1929.

ndm m W invention 'reno machines, adapteda-tozplaya plurality of IQ (Iv'F supporjtedryat itrwoipolntseabove the tone' arm-t' is a guide-b'yi Patented Feb. 5, 1929.

TIQFFEQE,

v MULTIPLE ltnoonn vreonr'lirn i application flled J'une 22,- 1926, Serial No.;117,732, and

. qng 1" ordsvini succession.- n; u.

According to the present j invention ;;the*

5 requisite inovementseoft-theji soundsbfox -;and- V, tonoarm of :agramophone orzthe-lilie'; ('OtllGl'a than the' inovement ofi sthe toneaarm-which:

takes place avhilea grecorddsbeing played) aife effectedwby m'eans zofnthe weightiof ithe reci the soundibox land to iswinggtlle .tODGifill'IllzaIld sound @boxi clear; of: the=turntableywh1lera mew reeordrisgheingiplaced in positions-m; m; .1

In one formofcbnstruction'therecords are worm adapted to-iholdtheedges of the 'rec ow'n weight, iovenza? cur-veil-:guideplate;attached to he soundrbox and-:so.rshapedrasvfirsfi toiraisei recordxi'waIn Eight; the cam l9 is shown'in the" thfl ESOWldwbox; tind-isecondlyswi ngr. the: tone) position. of 5 releasing theflleyer 45 and Fig? 7' m-cl ar Of the -turntable;:o: s; .rI-t'is arse! i iaa shows a reo'rdv'disk iZl-being transferred'r'rom" WhHiethQiSQDnd-bbm is raised andzthertone zz arm ;sw.ung f jout clean (of the: =..turntable,-: but before. th

in; the raised, position 'by means of .-adetentwhich; engages; theund'erside' of i an A inclined soundbox a nditone jaim'qretutns the tone arm soundbox eomes oppositeiaslotfinftlie'giiide so that the sound box is released, enabling the stylus to engage the outer edge of the record and to play the same.

In the accompanying drawings which illustrate the invention, Figure 1 is a plan view, parts being broken away and parts in section, Figure 2 a side elevation and Figure 3 an end elevation. Figs. 4, 5, 6 and 7 are perspective views of the operating parts of the machine.

1 is a sound box carried by a goose-neck 2 which is pivotaly mounted in a tone arm 3. Secured to the goose-neck 2 is an arm 4, provided with an extension 5 and a stop pin 6. 7 is a flexible shaft, fast with a ratchet wheel 8, and with a releasing disk 9 having a cut-away and at an .nngIe :to zthezhorizoiitalr One point 'so-e-t aei z :Ielined etone arm isrimposition ready for playing-31; new-:record the: sound' boir=-is;held

into theplayingipositiomthe said arm m'o'ving, inwardly until the detent' attached :to .the

- pawl 10 is carried by a'lever ll, loosely mountthe centl-doi'lthe turntable I7 (see Figure 3') of thelgrhinophoneg'nvhiilst- 18 is a stop located atto.- lthe;aturn' talil e" 1 7;? and wliich amounted on the spindle 14 .In

Fig. fluis iazpe'rspective view showing the r: parts; in :position: to:. beg in playing a record. Figs 521s a per-spectrve' 'v1ewshow1ng the lever 4 -4 in two :positions in'which it is 1n engageinentewith the stop 18 and in which the portioni9,:the' ratchet wheel 8 being rotated by a:'spri-ng--pawl 10,-ngagin-g therewith. The

edmtone endzon'theshaft 7 and whose otherendzisslottediatilandiengaged by. an eccenl tric' :13 secured -to :th'e' rnotor: spindle ltof the grainophdnee. l'5-iis'iianframe in which the flexible sbattil isjournalled,- The lower face 160i theifrarheiis ihclined up'wards towards 10 0rd, the. a said 1 weight. I being; ifltlliZEdl ito "t raise 2 theiedgelof thenfaicelfi'x-r 1-9 isi'a camsecu'red a tothevundersideriof disk- 9 and 20- isfa; support for re'eords 2l-,'loqated oppo,site the disk 9c 22- wvhi'clrf the3i'ec0rd 21- is guided on -is loosely lever #Lzhas :-just:.passed the edge off the 'in'-' plate 16 and is 'held -b y the cam plate 19 whichgradually-releases=the lev'er 4 to'permit' theisoundwbbx l-flto engage 'the face of the the {disk :9 toarthe lever= k 'fln this' figure a P portion-of; th edge oi the dislr- 9 cut away andsa'further p'ortion is cut andtu'rneddownwardly as indicatedxby the part 9 for the ;;purpose of releasing a record--21 from the arrivesat :the end of theturned-down por' git}? 9P of the disk 9-v-a'nd i's thereby allowed to -When a record is released, it falls firstly on to the arm 4 (which, when the previous record has been played, is, of course, near the centre of the turn-table 17), whereby the weight of the record first rocks the arm about its pivotal mounting on the tone arm 3, and with it the goose neck 2 with which the arm is fast. This raises the sound box 1 from engagement with the record, and thereafter the weight of the record, still in engagement with the arm 4, swings the arm, and hence the tone arm 3, outwardly from the centre of the turn-table.

Before the end of this swinging movement 'rdisk 9. This fi ur'e clearly shows:hou this guide. NV hen,the. record has come intoi'pos'i-t.. tionl pgq.fihe turntable, the lweight'of; the In operation the (lisk 9 is rotated at such a speed that at the end of a predetermined time- (say .four 'and a half minutes) a record 21 of the arm 4, the; record drops from the arm" allows the record to drop graduallyon tothe,

By the time that the record has droppedfrom the arm 4- to theguide-fi the 1 turn-table.

said arm has been moved under the inclined plate 16 which thus; prevents--the. arm.= from into contact with: the record?- After the rec- --ord has dropped on totheturntable, the arm 4 is -caused, by the .inelinedtsurface 16', automatically 1 to I return. towards the centre of the turn-tuble,-..this movement-;being sufficient to move, thesound box jover the commencement of- 3 V I T tomatically .-feedsing records tothe turntabletliereofirthe combination of a turntable,- a tone I the-record, but theuise oi the inclined surface being; insuifioienttos allow;thesound box to be dropped by the arm 4.-intoeontact withthe record. Finally,;the soundpboxds gradually lowered; .into cont-act :witli the.- record by the a cam 19; which engages therfupper. end-. of the arm 4= and is ifastaevithithe constantly rotatedmember or'disc, 9, the. arn'n sliding upwardly along the edge of thle;pla.te;l6. "w; 4

The weight of the isoundebox 1, and the goose-neck 2, causes the-upper end of :the arm 4-to move alongrthe inclinedyfaee 16 ofthe frame 15 and;s ound bor: 11-, moves towards the edge of the record 21, unti1 thev.--said arm 4 comes. againstfiw calm 19 "SGQUIGdEf toithe dislr i 9; Continuedrotationroftheedisk.9aand con sequently; of --the'j a'm=;-,19:- allows; the arrir 4 gradually-$9 move-upwardly, whereby -the yl ifiarriedz by rtheflsoiund' box is gradually that. I claimis:

1., In: a. gramophone-hayingmeans for automatically feeding records tosthe :turnt-able thereof, the combination-10f atone arm, a sound -box pivotally mounted :on: said tone arm, a turntable, and means-adapted to be actuated by the weight of the next reoordi to be playedfor. automatically raising-the'soiind box'and moving thetone armand sound box clear of said turntable. 4

2. In a gramophone having means for automatically feeding records to the, turntable thereof," the combination of a tone arm, a sound-pivotally mounted on said tone arm, a turntable, means adapted to be actuated by \the:,.weight-.ofithe2 next. record to be played for automatically raising the sound box-and moving the tone arm and sound-box lowering, and-.hencegmoving, the soundbox clear at said-turntable} means-tor automatically causing the tone arm and-soundbox to swing into'a: position for playing the said ree- -ord;. andemeans' for automatically lowering said'soundfbox ODEtOSii-ld recordafter the said .reeordaisiinapositiouupon the turntable; Y

' In a' gramophone'havlngmeans for auar1n,-;a: goose neclis pivotally mounted? on said 1 tone: anmfia" sound; box carried by-said gooseneck, an arnizsecured to saidgoosesneck 'and adaptedato ber'actuated by the; weight: of the next record-to be.'p:layed' fora'utomatically raising the-soiindboxand movingthe tone arm clear ofsaid turntable,adinliired plate adapted to be engaged by said arm for autoa position-for-playingthe said record, and a cam. engaging said arm for"automaticaily lowering saadesoundr-box-on to said record I after the gsa idirecordisin: :position .upomthe turntables-:2: a}? f z.

4.: In? '21 .-,gnamophone: Having "means for' an 1 tom at-ieally; feeding: records fo 'the turn table ;mat'ically eausing'thetone-arm to swing into thereof; the; Ecombination. of 1aturntable'; a= 'tonearm-,1. aygoose -neckl pivotally mounted in? said tone arm, a soundxbox carriedbysaidfgooseeneckjran arm secured to'sa-id goose-neck adapted? to f be actuated by the weightgefthe -nextfrecord =tos be played for automatically raising-said: sound-"box and moving the. tone arm clear of said turntable,"'afd'etent 'atlapted to' hold. the sound box inthe 'rai'se'di'position, an inclined guide for causingthe' tone arm to swing into azposition for-playing said record, and-means in said inclined guid'eifor releasing said detent=foralloiw'ing the sound box to be "lowered on to-said record? MICHAEL WILLOUGHBY" GORDQN-CUWUVIING.

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