Phonograph Record Player Speed Selector

Transcript

May 5, 1959 L. A. PRANTER - 2,885,208 PHONOGRAPH RECORD PLAYER SPEED SELECTOR Filed Aug. 24. 1953 ‘ 2 Sheets-She'et 1 9107.1; 17 ‘IN VEN TOR. ._ Lawrence A. Pranfer. BY 2° ' ‘ W ‘WM/41¢‘. A] TQRNE vs. May 5, 1959 |_.. A. PRANTER 2,885,208‘ PHONOGRAPH RECORD PLAYER SPEED SELECTOR Filed Aug. 24. 1953 2 Sheets-Sheet 2 76 . INVENTOR. Lawrence A. Pranfe/t ’ 82 .77 78 BY ' A TEL/LIVE Y5. 2,885,208 , United States Patent ice Patented .May 5, 1959 2 1 I turntable is driven; and to provide a phonograph record player speed selector which is economical to manufac ture, efficient in operation and may be applied to con Qventional structures vwith little alteration whereby a mix Ol ture of different-speed records may be played at the 2,885,208 PHONOGRAPH RECORD PLAYER SPEED SELECTOR proper speed in their turn. ‘ , In accomplishing these and other objects of the present Lawrence A. Pranter, Fort Worth, Tex. ‘invention, I have provided improved details of structure, Application August 24, 1953, Serial No. 376,219 5 Claims. (Cl. 274-10) lcompanying drawings, wherein: ~ p Fig. .1 is a vertical sectionalview through an automatic ‘the preferred forms of which are illustrated in the ac phonograph record player provided with a speed selector in‘ accordance with thepresent invention. - Fig. 2 is a plan view of a phonograph record with a . ‘ This invention relates to phonograph record players 15 ‘speed indicating indicia ring thereon. Fig. 3 is an enlarged sectional view through the center and particularly those having apparatus for accommo dating a plurality of records and automatically dropping ‘portion of the record showing the position of the speed or moving them one at a time into playing position after completion of the record which was previously moved ., indicia thereon. provide an apparatus responsive to indicia’ on a record v ': Fig. 4 is a diagrammatic view of the phonograph rec ord player and speed selector. ' _ Fig. 5 is a plan view of a ring for indicating one speed to be played for automatically selecting the speed of of rotation records. to playing position, and has for its principal object to rotation of the turntable for the record to be played whereby a mixture of various or different speed records may be played in any sequence. of records. ' Phonograph record players with what is termed auto- ' of the record being played and at the end of the selec to the end of the grooved portion. This swinging of the arm to the end of the grooved portion of the record _ . ‘speed for records. , - > Fig. 8 is a side elevation of arecord player having a modi?ed form of speed selector thereon. Fig. 9is a sectional view through the upper portion of 30" a ' tion the groove in the record‘ is of different pitch and ‘ causes the arm to swing toward the center of the record ' .Fig. 7 is a plan view. of a ring for indicating a third =25. matic record changers have been available for a num ber of years. In the majority of such structures, there is an arm with a needle therein which follows the grooves ’ i Fig. 6 is a plan view of a ring indicating another speed record supporting pedestal, particularly showing the switches therein. . Fig. 10 is a sectional'view similar to Fig. 9 showing record moving downwardly on the pedestal. ‘ Fig. 11 is a transverse sectional view through the pedes e?ects closing of switches to energize electrically oper tal on the line 11-11, Fig. 10. ated apparatus which lifts the arm and moves same be- ‘ Fig. 12 is a transverse sectional view through the pedes tal showing a diiferent-speed record moving downwardly , ‘ yond the periphery of the record, then moves or drops thereon. _ ; the next record into playing position and then moves Fig. 13 is a transverse sectional view through. the the arm back into position to engage the needle in ‘the groove of the record next to be played. There are at 40 pedestal showing still another speed record moving down wardly thereon. I present on the market records and record players de Fig. 14 is a diagrammaticv view of the ‘electric circuit signed to be operated at 33, 45 and 78 revolutions per of the record player and speed selector shown in Fig. 8. minute. Many times a selection with a particular artist Referring more in detail to the drawings: . is available on records designed to operate at one of 1 designates a phonograph record player which includes the speeds and not available on records'operating at the 45 other speeds. There are phonograph record players now ' a support 2 on which is carried a motor 3 operatively available which are capable of being operated at the connected with a turntable 4 for rotating same tolturn records 5 supported on said turntable. The records different speeds but such record players are incapable of playing a mixture of diiferent-speed phonograph records. have faces provided with grooved portions 6 on which 4 ‘In such machines theyoperator is required to either play 50 a selection is recorded. The record player 1 includes a playing arm 7 having a needle 8 adjacent one end all records of the same speed or to manually change 7 thereof adapted to follow the groove in a ‘face of the the speed as each different-speed record comes into record, said needle being connected to a ‘pickup to pro _ v v duce a signal in an ampli?er 9 connected to a‘speaker ‘ Further objects of‘ the present invention areto pro vide a phonograph record player capable of operating 55 10 for audible reproduction of the selection recorded on the grooved face of the record. A spindle or ped at different-speeds with an automatic speed selector and , changer ‘whereby a mixture of different-speed records may estal 11 extends upwardly axially of the turntable 4, the be arranged on a record player having an automatic record upper end of said spindle being adapted to extend through changer and the turntable rotated at the proper speed axial apertures 12 of a plurality of records sleeved for the respective records. as they are fed into playing 60I thereon and supported by a member 13 forming part of ‘position; to provide such a record player with apparatus». a conventional record changer apparatus 14. It is cus which is responsive to indicia on the records to change tomary in such ‘structures that when the electrical cir - the speed of the motor drivenv record turntable to that cuits of the record player are energized the record indicated by the indicia; to provide a control circuit changer 14 moves or drops a record 5 onto the turn which is energized responsive to indicia on the record to 65 table 4 and the player arm 7 then moves over the'periph be played, said control circuit actuating a speed changer » cry of the record and downwardly until the needle 8 ‘which controls the electric circuit to the record driving ' engages the grooved portion 6 of the record. The rec motor whereby the speed of rotation of the record is ord is rotated and the selection thereonreproduced. ‘ ‘At that indicated onthe record; to provide a control cir the end of the selection the [groove on the face of the cuit which is-energized responsive to indicia on a record 70 record has a di?erent pitch moving inwardly at a faster to be played to produce a signal which is ampli?ed and ~ ;, t rate as at 15 and the needle following said groove moves the playing arm toward the spindle to a position at then used to e?ect a change in the speed at which the position to play. l p a ‘ 3 "essence; ‘whichYt‘he; arm movementrcloses ,a switch to energize , r to energize the light source 2T ‘and?relay 48. ‘When the relay 48 closes, continuity to conductor 37 is reestablished. ‘ thetiseonrdwchanger ‘apparatus whereby the‘ arm is lifted from therrecord and ‘moved outwardly beyond the, pe riphet'y;thereof. Then the record changerwmechaniam movethr?‘drops another ‘record 5 onto the turntable 4 ‘mane; is again moved over‘ the reeor‘d‘to engage ‘the ‘n‘eedleidwith the ‘groo‘ved‘face thereof‘. The motor iflsfsnch‘ithat its, speed ‘of operation maybe ‘manually ‘tol‘ld‘rive the turntable to play different-speed recordatior example records‘designed to operate at 33, 4T0!" ‘revolutions per‘minute. 1 The structure ‘above ‘ ‘ “ ’* ‘isllezel‘nplary ot‘ree‘ord players now‘v available. invention ‘consists of ‘ indicia ‘.16 on the , When the record ?nishes playing the change mechanism is tripped and the tone arm7 swings toward the outside periphery of the turntable 4. ltltrips the switch 36 and the light source 21‘ ?ashes‘momentarily. Assuming the lowermost record has a playing ‘speed of 78 r.p.m., the re?ected light beam 22 causes the generation of a rela tively high strength signal current ‘within the light sensi 10 tive device 23, which, “when ampli?ed, causes both relays 25 and 27, to close momentarily. As relay 25 closes momentarily, then the current in conductori37 passes the closed contact points, through the windings of relay 26 “ ,faces‘iof ‘the record to indicate the‘sp’eedwat which it is to the ground return, causing relay 26 to close. When ilpib‘e rotated,‘ andzin ‘the, structure illustrated in Figarhfta“? inclusive‘ the indicia‘ 16 consists ‘of rings ,l'luofi thin materiaf‘applied ;to ‘the faces of the record “the "gnooved portion,‘ ‘and the name bearing relay 26 closes -‘ thecurrent in conductor 37 passes the ' nllthereof: The ‘rings l'lhave exposed faces closed contactpoints, through the windings of relay 26 to the ground return, and thereby holds relay 26 closed after relay 25 opens. Until one of the switches 35 or 36 is tripped,‘ relay 26 will‘remain energized. Regarding the “ ‘ seamen light re?ective characteristic‘for the“ dif 20 act'ion‘of relays‘ Hand 28, they will react exactlythe same ferent 1ipeedsrfor example‘the faee‘19 of, the; ring indi cating 1i} revolutions per ‘minute may be highly re?ec as‘ did relays ‘25 and 26 above.‘ It should be noted here that had the‘ lowerm‘ostxrecord been of 45 ‘rpm. playing spe‘e‘dythea result would be thatwrelay 26 alone is ener giied,“ and if the lowermost record had been of 33 Fig. ;5. , Theuring indicating 45 revohltions per minute may ‘have‘a‘l‘ace which is grayin‘ color as at 25 rpm.“ playingspeed the result would be that neither relay ave, \ rorj example ,white‘ or/ silver as‘ indicated at 20, ,n2llaintFiga‘6, ringindicating‘SS revolutions per "minutefimay‘be'hlack ornonre?ec‘tive as indicated at The ‘motor, driving electrical‘ current‘ passes through 6 These particular colors are examples‘ only‘ “ conductors” to several ‘combinations of the speed control “ as other‘ ‘colors oi'kre?ective qualities may :be‘used ‘pro ‘ will produce; a ditference in the intensity, or, 'ing“,‘in%series,with 'theimotor?eld windings. The resist ‘Fig. resistances 40, 41 and 42‘ which ‘are, electrically speak beam 22 aspickedrupg'by a ‘light ances the adjustable or trimming type so that exact ' motor ‘speed may beset by the service mechanic.‘ Fur ‘tionto‘tlir‘ect a‘ beam ‘of light ,as indicated by the dotted ‘are inparallel with each other, electrically‘ speaking, so color eta thermore‘the‘ speed‘ control resistances 40, 411 and 42 , ,‘onto the face 19 of a ring 17 on the lower surface 35 that their‘combinedresist‘ance is less‘ than their individ of record supportedjby‘ the record change 543.“ ,A‘light sensitive'd‘evice,‘ for example‘ a ual resistances ‘and when allthree resistances are electri calluyioon‘nected through relays 26 and 28,,the motor 3 turns at the ?xed ‘speed to drive the turntable 4, ‘through *a suitable‘reductio‘n gearing, :at 33 rpm, and when relay , is‘idirected on the face 19 ‘of the ringl'l of 40 ‘26‘is‘ ‘energized leaving only resistances 40 and 42 electri ' a cell 23, is arranged on ‘the ‘support 2 in a whereby when”a beam of light‘frorn the light -»~ record, ‘the light re?ected from said ‘face he tothe light sensitive device‘, 23‘ which “ [a signal current of electricity of‘ distinct ' ‘ 22. which is ampli?edbythe “elecn'on m, to Vthe‘color or‘intensityof the in impressed across the'parallelrelays 25 and 21.‘ ‘As ‘a rosultlof ‘the strength of the generated signal A ‘ t a ‘ ‘ " tone or‘ both or neither of the relays 25. 1 ” ‘momentarily close, according to ‘ ‘ ‘ ‘ follow :swhen thegenerated signal strength is velyrnil‘twhen the lowermost record isa33 r.p.m.), 27 “will close; when ‘the generated relatively medium strength‘ (when the ‘record is a 45 r.p.m.), relay 25 will close; and rated signal strength is relatively high ‘ - ‘the lowermost record is 78";r;p‘.m.),,both lndfZ'l will close. ' " ‘ ‘ ‘ e‘ferring, to Fig. 4, the “o?’aon” ‘switch 29 is can" a Idltltble source of valternating current is ?owing into , 30‘ and the recti?er 31; a‘suitable‘rec - “current is ?owing ‘throughiconductors 32 and 33 ‘ ‘mishap’; on thetoneann ‘I and back to the‘raudio * ‘ ‘ ‘ gland to the speaker 10; a low voltage recti?ed through ‘the conductor 34‘, :through the a turntable 4 speed will be 45*r.p.m.,~‘and when‘ both the relays 126 and 28 areenergized and only the resistance 40 is electrically connected, the motor speed will be such that the turntable 4 speed will be 78 rpm.‘ ‘ \ When‘relay 25 closes,*current from conductor 46 passes fthrough 'the‘change mechanism solenoid 43 ‘and back “through conductor 47 andthe contact points of relay ‘28 to“ groundiv Relay ‘28 serves to prevent energizing the “solenoid 43‘ except for of 45 rpm.‘ speeds. When a 45 ‘rpm. ‘record is lowermost, then the solenoid ~43\will energize and remainenergined until relay 26 de energizes and releases.‘ When the solenoid 43 energizes it pulls 'a lever 44,‘ which is apart ‘of the change mechanism “14,- which will shift ‘the‘mechanism ‘to causejthe tone ‘arm ‘7 to‘ position itself to play‘ the seven inch ‘records common to 45 r.p.m. playingspeeds. When the 45 rpm. ‘record play is completed or rejected and the holding cir “cuitto'relayl‘26 is brokenandtbefrclay releases, then the ‘ holdingcircuit to the solenoid‘ 43 is broken and the‘ sole noid‘releases‘ the lever 44 whichthe-return spring 45 pulls i ‘back‘tothe'normal position‘for ‘playing the conventional ‘ten inchrecords of the other playing speeds. It should ‘be ‘noted that either 5 switch as or ‘as ‘switch 35 and the tone arm switch 36;‘through 137‘ towthe open contacts on‘ relays 25tand ‘*is‘tn'pped, there'must ‘be a ‘de?nitetime interval within 28; 1a wellregulated high voltage current “the-‘normal circuit through ‘the , switch ‘and the makingof " contact ‘of the alternate circuit through-the ‘switch which ‘ I iroln'the recti?er, 3l‘through the conductor 3810 ‘current electric motor 3 and backlthrough con ‘ doctor‘ 3! Jinnah 4 ' a ‘ cally connected, ‘the motor speed will be such that the the ‘switching jjmechan‘ism "between that intenuption‘ot energizes rel‘ay 48 and the‘lightsource‘2l.‘ The need for to‘the parallel ‘speed regulating resistances 40,‘ to? the‘ ‘delay in switching is so that therelays'26-an'd 28‘ will , 1101118‘ ground ‘return, and back to‘ therecti?er referring to Fig.4, when the listener moves'the , have time to .deene‘rgize and'rel'ease when the‘;‘normal cir cuit'throu'ghfconductor 37 iscinterruptedr The purpose of the'relay ‘48 is‘to‘providea bridge around‘the open switch 35 or 1‘36 by passing thev‘ele'ctrical current‘from ‘con switch 35 ‘to ‘breakxcontinuity, through conductor, 37, and 75 'ductor ‘34 "through‘lconductor 4910 conductor i3‘! since ‘lreiec?'control on the phonographl‘chassis, it causes ‘the " estates ' the normal path of current new to conductor 3'7 is broken i must register with the rib 68 isof such shapethat alone, rhythe open switch. 6 Finally, since the relay '48 is a de and no other notch, will register with the rib 68. “ This l-‘layed opening type, the circuit through conductor 49 will then ‘?xes a master combination whereby the record can be maintained for a suitable length of time until the switch 35 or 36 returns to normal position and reestablishes the normal circuit. . ‘ ' In the form of the invention illustrated in Figs. 8 to 14 inclusive, the indicia, on the records -51 consists of a .4: not be misaligned on the pedestal. , . As illustrated in the wiring diagram, Fig. 14, when the “o?-on” switch 75 is “on” and a suitable source of alter nating current is ?owing into the recti?er 76,_a suitable ; recti?ed current is ?owingthrough conductors 77,,and} 78 master notch ‘ 52M and selective notches 52 extending to the pickup 79 on the tone arm 61 and back toth'e audio outwardly from the center aperture 53 thereof, the records 10 ampli?er 80 and to the speaker 81; a low voltagevrecti '51 being of the type designed especially for, or of the ?ed current is ?owing through the conductor, 82, through the “reject” switch 83 and the tone arm switch 84, through conventional types modi?ed especially for, operation on a record player 54 having a ‘relatively large pedestal 55. the conductor 85 to the open contactson relays '86 and In such a record player the pedestal 55 is ?xed on a turn 87 and on switches 69 and, 72'; and a well regulated high table 56, rotatably mounted ‘on ‘a support 57 and driven 15 voltage current ?ows from the recti?er 76throughgthe by a motor 58 also carried on the support 57. The pedes conductor 88 to the direct current electric motor 58 and back through conductor 89 to the parallel speed regulating , tal 55 is hollow and extending upwardly therein is a shaft 59 operatively connected to the record changer apparatus resistances 90, 91 and 92, to the ground return and back 60 whereby, when the playing arm 61 movesto the end to the recti?er 76 viathe ground. 7 g ‘ When the listener moves the “reject” control on the of the grooved face of the record being played, the play ing arm‘is raised and swung outwardly beyond the pe phonograph chassis, it causes the switch 83 to break con tinuity through the conductor 85 and thereby releases riphery of the record, during which motion the shaft 59 the holding relays 86 and ‘87, and the turntable speed is rotated to move ?ngers 62 connected thereto and ex returns to 33 r.p.m. At the same time'the circuit to the “, tending outwardly in slots 63in the Wall 64 of the pedes tal to engage under the record 65 next above the lower 25 change mechanism solenoid 93 is broken and the spring 94 most record 66 supported at the upper portion of the pulls the change mechanism lever 95 back to the nor mal position for playing ten inch records. When the ‘ pedestal 55. As the ?ngers 62 move under said record record ?nishes playing and the tone arm 61 swings out 65, other ?ngers 67 also connected to‘ the shaft 59 and ‘ extending through the slots 63 are withdrawn from under toward the periphery of the turntable 56, it trips ‘the the lowermost record 66 to allow same to move down 30 switch 84 which breaks the continuitygto the conductor 85 and thereby releases the holding relays 86 and 87 and - wardly 'on the pedestal into playing position. Then the the turntable speed returns to 33 r.p.m. At the same shaft '59 is rotated to extend the ?ngers 67 and retract the ?ngers 62 whereby the record 65 is then supported time the circuit to the change mechanism solenoid 93' is broken and the spring 94 pulls the change mechanism lever on the ?ngers 67. The pedestal 55 has a rib 68 on the exterior thereof and‘extending the full length thereof. 35 95 back to the normal position for playing ten inch Arranged inside of the pedestal and diametrically oppo records. As the record changing apparatus '60 moves the ?ngers site the rib 68 is a switch 69 having a lug 70 extending outwardly through an opening 71 in the wallof the pedes I 62 and 67 to drop the next record onto the turntable, the notches 52 in said record will determine the circuits tal. A switch 72 is arranged in the pedestal between the rib 68 and the switch 69 at a level slightly below! 40 energized. If the notches are arrangedas' in Fig. 13, neither of switches 69 and 72 will be energized, and the that of switch 69 and has a lug 73 extending outwardly turntable will continue at 33 r.p.m. and the recordvwill through an opening 74 and equally spaced around the play at 33 r.p.m. If the notches 52 in the record are ar pedestal from the lug 70 and rib 68. With this arrange ranged as in Fig. 11 the switch 72 will be actuatedto ment each record, regardless of speed at which it is de¢ signed to be operated, has one or more notches extending 45 energize relay 87 whereby current to the motor 58 will ?ow through the conductors 88 and 89 and through the outwardly from the axial aperture 53 thereof, the axial parallel speed regulating resistances 90 and 92 and will aperture 53 being such that the records are freely slide operate said motor wherebythe turntable is rotated at able on the pedestal 55. While the notches 52 may be 45 revolutions per minute. Simultaneously the change arranged as desired relative to the speed at which the record is to be played, in the structure illustrated in Fig. 50 mechanism solenoid 93 will be energized and will ‘pull the change mechanism lever 95 to cause thetone arm to 11 when the records have two diametrically opposite postion itself to play seven inch records. ' If- the notches notches 52 and 52M, the record is designed to be operated 52 are arranged in the record as shown in Fig. 12, move at 45 revolutions per minute and as the record moves ment of the record downwardly on the pedestal will close down the pedestal one of the notches 52M will be regis tered with the rib 68 and the other notch 52 will be posi 55 switch 69 to energize relay 86 and will close switch 72 tioned relative to the lug 70 whereby said lug and the switch 69 will be undisturbed, but since the lug 73 does not register with any notch said lug will be moved inwardly relative to the pedestal and will close the switch 72. The arrangement of the notches illustrated in Fig. 12 60 is for records designed to be rotated at 78 revolutions per minute, there being one notch 52M in the record whereby the notch will register with the rib 68 and will to energize relay 87 whereby current will ?ow through conductor 88 to the motor 58 and through conductor 89 and speed regulating resistance 90 whereby the motor will operate to drive the turntable at 78 revolutions per minute. The relays 86 and 87 will remain in the same position until a record is completed or rejected. It is believed obvious that I have provided record player apparatus responsive to indicia on records for automati cally regulating the speed of the record player turntable allow the record to drop down the pedestal. There being no other notches, movement of the record past the lugs 65 to that for which the record was designed to be operated whereby a mixture of different-speed records may be 70 and 73 will move said lugs inwardly relative to the played in any sequence. pedestal and will momentarily close the switches 69 What I claim and desire to secure by Letters Patent is: and 72. .1. In combination with a phonograph record player The arrangement of notches illustrated in Fig. 13 is for records designed to be rotated at 33 revolutions per min 70 having a motor for driving a turntable for rotating records, a playing arm and mechanism advancing an ute and has four equally spaced notches 52 and 52M other of a plurality of records to playing position while whereby the record could pass downwardly along the the playing arm is moved clear of the record and then pedestal without disturbing either of the switches 69 back into playing engagement therewith, a speed selector In all of the above descriptions, the notch 52M which 75 for the motor driven turntable comprising, means regulat or 72. essence ‘ i!!! the ‘7 ill 4-“ Aspect sslectnr-tcmstamatic rhcnpsrash record .théitumtablemotcr mines the faibe'arn'of light ontoa portion players forfregulating‘thefspeed of rotatiodof a record “of thefj‘w t‘ record‘ to, be played, said Iwordportion in prising. acmrdanceywithfa’ a‘ ward mrntahlejmw ‘(liaison including.rscqrd‘ alielectric mall! ‘ having?‘ t‘ re?ection‘cha'racteristie ‘indicating the ‘speed is slesisnattoimae when beina played, ‘a, ‘ ‘motqrlbavilis speed'vsrittion‘sutor 10mins the turntable citcuihrmeansfrespdnsive to the amcuntlot the“; at“ a speed correspondln‘gto‘ the‘ designed‘speeds of ‘the I, for de?ecting ‘an electrictcurrcnt, in the circuit, “circuitfor 1 and means‘ operating responsive the ‘speed to regulat jdjtio mid adjusting the [speed of the turntable motor 1 records to he Played. ‘f9’ "sulatint: ‘ the speed at‘ whichlithe motor“ the turntable, an electric circuit, means“ in theelectric ‘circuit responsive to the movement of the playins from a record being Played 10 xzlnbilmidtumtable with ‘is operated at the indicated speed. "an , automatic ‘phonograph for closing, the eleetrlcfcircuit, means,‘ in‘ the‘ electric circuit'and?energized therebyltfor directing a beam of item billet’ having a variable speed motortfor driving ‘ light ‘onto a portion of the ‘next record to be‘ played, said , 3t iwrvtatinsrmrds, a rhyme anothenof a‘plurality of rec‘ord‘po'rtion having re?ective, characteristic in speed staid'record is designed to ‘rotate ‘when toplay» ,15 dicating and mech béinrplay‘ed; a conlml'ffcircuit. means ‘responsive to th= amount of‘the reflected ‘light beam ‘for eifecting an elec tric current‘ i'n‘s‘aid‘cont‘rol circuit, and means responsive to the electric current‘ in‘ the control circuit for ‘adjusting ‘while, the ‘playing is moved‘ clear of‘ then back ‘into playing engagement there ‘ the 1 ‘n1 selector for‘ the motor driven turntable a speed controller'for, adjusting the turntable ‘ motomooperateljat ‘the speed of the turwntable ‘mptor‘whereby said turntable selected speeds, means direct-1 ‘of light‘ontoa‘portion of the ne‘xtrecord one; " " ‘ j “ m‘ l I 1 is operatf‘edat theindicated speed. mild l t players for‘regulatin‘g‘the speed of rotation of‘ a record indicating the speed said record is designed ‘ “ , vvlhen in accordance ‘with a speed indicia on the record com played, a control circuit,,means to‘ thefamount of the re?ected light‘beam r 25 c Ian‘ electric ‘current in the control circuit, aild A ‘ prisingarecord turntable; ‘means including ;an ‘electric 1 motor having speed, variations‘ ‘for rotatingthe‘ turntable at a speed corresponding'to‘the designed‘speeds ‘of the records, to be‘ played,v meansff‘or regulating?the speed ‘at which the motor rotates the‘turntable, an ‘electric eircdit, means in the electric, circuit responsive to‘ the movement of the playins arm from a: record xbeins, played‘ior ‘responsive to the electric‘ current in the circuit ‘ to ‘the :‘speed controller for, actuating thelspeed of the turntable motor whereby turntable is operated at the indicated speed: 30 ‘3.1 In? ‘combination with Jan ‘ automatic phonograph ‘ “ a 5. A speed selector forfautomatic phonograph‘record ‘c said ,rccord'portion having a light re?ection‘ ‘having a variablespeed ‘motor for driving in turntahletor rotating records, a playing arm and mech ' advancing another ofjalplurality of records to ‘ closing the electric circuit, means in the electric circuit ‘ and energized thereby for directing a beam of light onto ‘ tjahlelcnmpris'ingp means directing a beam; of lidtt onto 1a :of the next record to be played,1said,record of the ‘re?ectedlight beam for‘ elfecting an ‘electric cur ‘a portionnof the nextrecord to be played, said record mlition while'tthewplayingarm is moved clear 3‘35 , portion having a light re?ective characteristic‘ indicating the, speed said record is‘ ‘designed to rotate when being ‘of the ‘record and then back‘ into“ playing engagement played, ascon‘trol circuit, means responsive to ‘the amount “themwithta speedqselectorforthe motor driven turn portion having alight re?ection, characteristic indicating 40 ‘ lthespe‘ed‘ said ‘record is designed to rotate when being playerba control circuitpmeans responsive to the amount of the re?cctedlight beam for etfecting an electric cur rent in t the‘ control circuit, ‘ means responsive to the; elec current in thelcontrollcircuit for adjusting the speed ‘ ‘of, theturmahle motor whereby said turntable is operated ‘ the ‘ the. speed, and holding means ‘for retaining ‘ ‘of the turntable motoruntil a record having a “di?erentllight re?ection characteristic causes the re?ected , light beam responsive means to e?ect a different current 5O i in the control circuit ‘at time _‘of selecting the next record to be played. rentin said‘ control circuit, means responsive to energize: tion of thccontrol circuit for maintaining said circuit for a predetermined interval,‘ “and means, responsive to‘the electric current in ‘the ‘control circuit for adjusting the speed of the turntable motor whereby said turntable is operated at‘ the indicated speed. ‘ References in thej?le of‘ this patent UNITED PATENTS 2,027,427 ‘Hammond __________ __‘Ian. 14; i936 2,113,401 Goldsmith .......... _- Apr. 5, 1938 2,776,838 Mueller _-_“_ _________ -_ Jan.‘ 8, 1957