US1432927A - Tomlibtson - Google Patents

Description

E. J. T'O'MLINSQN.

PHONOGRAPH. APPUCATION EILED APR. 1 919.

I Patented Oct. 24,1922.

SHEE'I I.

5 sHEEIs' ay/f 1 E. J. mmuwsom.

PHONOGRAPH.

APPLICATION FILED APR. 7. 1910.

l/VVE/l/ TOR EDWHRD J EMu/vsm/ ATTORNEY v Patented Oct. 24, 1922.

5 SHEETSSHEET 2.

E. J. TOMLINSON.

PHONOGRAPH. 9 APPLICATION FILED APR. 7., I919.

Patented Oct. 24

I INVENTOR I EDNHRD J 7T7ML/N5E7A/ er W212 A TTORA/EY E. J. TOMLINSON.

PHONOGRAPH.

APPLICATION FILED APR. I, 1919.

Patented Oct. 24, 1922 5 SHEETS-SHEET 4.

M0 0 M 00 000 0 0 0 0 0 0 0 0 0 0 .0 0 0 0 0 0 .0000 M0? 000 aw/W144 l/VVE/VTOR E R .J TUML/NEUN BY I ATTORNEY E. J. TOMLIN'SON.

PHONOGRAPH.

APPLICATION FILED APR. 7, 1919.

Patented 001;. 24, 1922.

INVEA/Tbfl EDWFIED J EML/NSUN aziimafw ATTORNEY Patented cod; 24,1 1922 I j rmMED;

FATE-N EDWARD J. rommnsonbr EAST ORANGE, rN' EW J IERSEY, ,AssrGNoR-ro suntan,

ELECTRICAL fi P N or NEWARK NEW JERSEY.

PII-IONOGEAPHQ Applicatioii fiied'Aprfl 7, ie1 9. "'seri 1 No. 238,386."

To QZZ whom earl 300mm:

Be known that I, EDNVARD J. 'TOMLIN some citizen o l thellnited States, residing at East Orange inthe county of'Essex and starter "New ersey, have; invented certain new and use fulj Improvements in Phonographs, of whic-hjthe following is a specif matr n. I

' (Thisi particularly adapted for playing a record in the form ofa fiat disk or plate *It is the principal object of my invention to provide aphonograph in which the sound record body isca'rried on a'support electrically driven in such a ma'nner to insurea constant speed andquietness of opera-tion ,lncertain't'ypes of motors now in use more or less noise'isproduced bythem' which is a detriment toc the production of theybest results from thejpleying ofthe,

record. 7

Another objector m3? invention is to se;

cure the above results with a motorm'echanism. that'isvery simple in construction and highly efficient in its" operation,' consuming a small am'ountfdf current, Heretoforeit has been customarytoiuse one or more pairs operation of the same sUbstantially'jautoin attic during the playing of a record.

v,Another object of my invention is to pro vide both a timer and governor simple in constructionbut highly effective in their opveration and disposing these devices so that they may be readily observed for the' pu'rpose of inspection and rep'airs.

.Other. andfufther objects will b'e apparem to one skilledv in the art after-a study oft-he" specification and drawings annexed thereto, wherein fFigu -e1 is a top plan'view on a reduced scale of a phonograph without the record tone arm brokenaway. r

disk 1 and with the reproducer'part ofthe- Figure 2is a partial View ,ofFigure 1, on

Ivention relates to eaean1 *or erated "phonographs'and as illustrated 1s tlon;

the same "scale; but showing the tone arm at the 'end of the playing position and'the stoppingmechanism in a position similar to that shown in Figure 1. I '1 1 Figure is a bottom view,fon the same 1: but with the timer "parts removed. 5

scale; of the motor frame Shawn in'Figure but on an enlarged scale to illustrate them more' clearly. This figure also shows the d agrammatic wiring' of the motor. v

Figure '6 is a part elevation ofithe phonograph motor.

is a sectional view; through the Figure? operating "electromagnet and ore,

'FignreS is a'plan view'of the governor device shown in Figure Grand FigureQ is a side/elevation of a niodified governor" device somewhat "similar to that shown in Figures '6 and 8.

' Figure 10 isja plan view ofthestationary the scale, but fwithjlthe starting and I stopping mechanism in x the v runningFposL Figure-'3 is a"view' similar to Fig i-g o Figure '5 is view "of the timer parts: ,andmechan1sm not shown lI1"Flgl1I"6 14.

base member showing "thejpole" pieces j'a' bracket member and, bearing for the: rota table support which is shown'in Figure 11. Figure 11 is a bottom view ofth'e rotatable I Figure 12' is a fragmentary section on the line 10 l0 'offlligurelll.

Figure 13 shows analt'ernative form of that shown in Fi ure 12.

; pole piece "which vmaybe, used in 'place'of Figure 141- is, a fragmentarybottom view I Figiire 16 i'llust'ratesthe type-ofjoint used between the two portionsjof the compound lever shownfinFigure 15,jwhilef J t s l Figure 17 shows. a deteil of one of, the

members of the other compound'le'ver shown Referring now to they details, wherein like numbers refer to corresponding parts in'the various views, 1 is] a mounting plate having a centrallopeninglfi w thin which is ,posi;

tioned abasemmber 3,"the s ame being fas tenedto the plate 1 through the mediu 'nor' armsl: adapted to have screwsjor. bolts'pass through the ;holes, 5' the armsJL Qn one side of the plate or base 3 is disposed a .se-

ries of pole pieces 6 which preferably correspond in number and shape to pole pieces 7 that are carried on the rotatable support member'S." Assho'wn in Figure 1-2, the pole pieces 6 and 7 are elongated as'indicated at 9, in order to present a larger surface for the magnetic flux lines. The type of pole pieces used on the base 3hr as armature.

bodies 7 on the rotatable support 8, may be of the laminated type as shown in Fio ure 13 wherein the laminationslO are are welded as at 11 to either the baseB or the support 8."

There thebase 3 is made of a casting, a cen- H tral hublQ is [preferably cast integral there- 15 a condenser 17, which will be hereinafter re ferred to. A sound record support plate is carried onthe hub 18 beingfastened thereto by any suitable means such as screw 19, a

V dhi'i elpin 20 being used to prevent the sound record support plate from slipping out of position while "the record is being played. Asshown in Figure '6, the armature bodies Tand the pole pieces 6 extend toward each other to a point where a -si'na ll air gap 21 is ohta'ined. I preferably taper off one corner ofthe pole pieces (5 as indicated at 22 as I have foundin some cases lhat this assists in quieting the operation'of the motor as the flux lines pass through from the ,pole pieces 6tothe'arinature bodies 7 01' vicerersa in a more gradual manner.

Mounted on the bottom of the base 3 is a plate 23 having slots 24 therein through which screws 25 pa'ss {for the, purpose of holding the plate '23 'to the base 3. By means of the s lots'24 and screws 25, theplate 2S niay'beadju'sted'on the base 3 for the purpose of shifting the position oi themovable timer n1einber'26 and the stationary adjustable contact 27. The movable me 'n'ber 26 carries a Contact 28'thalt cooperates withcontact 2?, the other end being turned over as at29 'which turned over portion is engaged by cam BOhaving the same number of indentations therein as there; are armature bodieS onthe rotatable support 8, Thecam 30 is held on to an'operatingf'shaft in-any suitable manner such as screw 31 and dowel pin (not shown) The operating shaft, it'will be understood is attachedtolthe su -mes and passes through the hole '32 injthe hub or core 12 and through the 'base 3, a bushing 33"beingprelerably used at the timer end to guide the'shaft injits operation;

' jritt'ached to the base a lu'g'34 carrying a pivotal bra-Chet by mea -elf a suitable pivot pin held in the lug-34 in "any suitable mannensuch as a cotter pin 36.. The bracket 35 carries a sleeve 37 within which a shaft is journalled. One end of the shaft carries a friction wheel 38 th'atis adaptedto run on i the periphery of the support 8, being'held in engagement therewith, in any suitable man ner, such as a spring 39 carried by the base 3. To the other end of the operating shaft is fastened a member 40 which has fingers 41'bent over forming a slot within which the resilient member 42 is seated. On both endsof the member 42are fastened weights 43 and it will be noted that there is a slight clearance 44 between the weights and the lingers 41 so that the member 42 has a slight longitudinal "motion. A contact 45 is carried by the spring member 42 and a cooperating contact 46 carriedon an adjustable screw 47 which in turn is supported on an arni48 that is, fastened to the base 3, in any suitable manner, such as a bracket 49. The outer end ofthe arm 48 is attached to an adjusting screw 50 carried by the arm 48. v An adjusting thumb nut 51 is fastened to' the outer end of the screw 50 and a spring 52 is adapted to hold-the arm 48 in any position to which it is moved by the thumb nut 51. andscrew' 50. It is seen thatthe movement 51 the thumb nut 51 moves the arm 48 to alter the position of contact 46 with reference to the position of contact 45 and it will be further seen that the opening and closingrof the contacts 45 and 46 is controlled by the rotation ofthe governor parts. just describedpias shown in Figure 9, one set of weights 43 is riveted directly to the members 40 and 42'jalnd only one set 01 fingers 41 is required'on the member 40. This construction is somewhat simpler than that shown in Figures 6 and 8 and functions in substantially the same Way.

l/[o'nnted on he plate 1 but insulated therefrom is a switch blade 53 connected to a terminal stud 54 also a secondswitch blade 55 in electrical contactwith the terminal stud 56. The switch blades and 55 are mounted such a-manner as to be connected togethejrby a switch blade 57 carried on b'u'tinsulated from one arm 7 0 of a co1npound lever the other 111'1110f WlilCli-lSilP dicated by 159, this lever being pivoted to the plate 1 byjpivot screw 60. lit will be observed by reference to Figures and (S that the arm has a slot 61 therein through which a stud 62; fastened to the arm 58, passes. A. lng'avffi'tui' n'ed upward on the end of the arm .58 operates in the slot 61 while a second lug6'4 of the arm 58. serves :asa stop for the lugon the arm From the above description, it will be seen-that the arm 59 may be a'c histed longitudinally on'th'e arm f5'8jby'loosening the nut 66 and sliding the arm59tothe desired point where it i l engage with pin 67 on the tone-arm V 68 of the phonograph. The arm 58 has a medium of lug ,69 the'a11n70is carried -counter clockwiseagainst the tension of the" spring 7 3 and, due to the frictional engage-- ment at the point '76 oil, the friction block spring being conn'ected-tothe stud 62 under the nut 66. From this construction, it will be seen that; that part of the compound lever consisting of the arms'58'and 59 is capable r 55, 57fand 53 back to the battery B or other Due to the starting 'im-Ti/ pulse'given to the rotating support, as above of being turned in a clockwise direction about the pivot- 60 without moving the arm for a purpose which will be hereinafter explained. A spring 73, having one end fastened to the stud 74-. on the plate 1 and.

the other end to the arm 70, serves to hold the arm 70 in the position shown in Figure 1, wherein the switclrblades 53 and are left in open circuit position and aifriction block 75, such asa piece of felt, carried on the end or the arm 7 O engages the outer periphery of the" movable support member 8,

as indicated at 76, thereby acting'as a brakeand stoppii'ig thejrotation. of the memberIS.

A second compound lever made up {or the members 7 7 and is used for a purpose which will be here nafter described. The j member 77 is pivotedto theLpl'ate l'by means of a pivot screw 7 9 passing through the bushing 80. The member 77 is made'up of" two parts 81 and82 which are frictionally held in normal working position by the construction of the bushing but on the exercise of considerableforce on the member 81., its position with referenceto the member 82 may be shifted for a purpose hereinafter pointed out. The end of member 82 is slotted at 83 to receive ,a lug St thrown upward on the end of the member 78; The member 78 ispivoted to the plate 1 by means of a slotted pivot 85 through which a spring 86 passes. The'ends of the spring -86 are fasened to 'lugs 87 thrown up from the body of the member 785 Theouter end the member78 has a notch 88 out therein and a projection 89 tliatis adapted to engage cam surface-9O oi. the member 58,

thatit is desired to start'the hono 'ra 3h.-j'

the starting mechanisa-z being in theposi: tion shown in Figure 1. .Movem'ent of the tone arm-68 carries the pin 67 against the arm 59 oi: a compound lever and through the 5., :therotating support and record disk are g en astarti'ngimpulse'in the proper direction; at the same timefth'elever 703srnrried to the position shown inFigure 2,

at which timethe lug 91 on'the arm 70 drops into the notch 88 in the member 78 p thereby locking the arm 70 in theposition I showii m" Figure 2, 111 "WlllCll position the switch blades 53- and 55 are electrically bridged as shown in Figure 6. This allows current to flow from the battery B to bindg p 92 thence hrough the'electromag netic' winding '13 to the contacts 27 aud28to s the frame or. ground G, thence through the contacts 45 and 46 of the governor ,to the described, is brought into operation and opens and closes the circuit through the electromagnet 13-intermittently at the proper 5*; intervals-Ito send'the magnetic flux through the armature bodies"? and pole pieces 6 in, such a way that torque is produced which rotates thesupport and the soundrecord body, thespeed ofwhich is controlled by the ':5:.-"

governor mechanism hereinbefore described and illustrated in Figures'G, 8 and 9. It will be understood that a suitable dust prom" cover'lsused in practice over the timer mechanism butfor the sake of clearness it is not shown in the drawings. 1

.As the tone arm 68 moves from the beginning of theplayingposition to the end of the playing position the pin 67 engages the member 77which in turn operates the member 78 to pull the notch 88 out of en tone arm 68 is moved 'back'to the position shown'in Figure 1,1pin 67, will engage the I arm 59 but due to=the ability ofthis arm to move to the right'independentj'of any movegageinent with the lug 91, thereby releasing 1.00 5

all as hereinbefore'"described. When the I ment of theres'tof the compound lever the pin 67-will'finally pass to the position'shown in Figuredand the arm 59 will be thrown back to itsnorm'al position by the spring 2:"

Should, for any reason'at the beginning of the playingoperation and'after the tonearm and otherparts havebeen carried to aposition shown in Figure 2; it be desired to carry the tone armback thisimay be done and'the cam surface then engages the'pr ojeotion 89to move-the notch 88. out of engagement with the lug 91; thereby causing a break in theelectrical ,circuit and also applying a brake to the rotatable support; I

f From what. has been said concerning the member '77, itwill be understood that the operation of the friction joint/between the membersfiSl 1 and 82 is for the purpose of setting the'por'tion 81 in such a position that pin 67 willengage it at the end of any given record, as vrecordsidov not always terminate the'samedistance from the rotating center and =at the same place on the recorddisk.

fore. provides means for stopping the phonograph atthe end oi any record.

In the Wiring diagram, shown in Figure 5, it zvill be noted that the condenser 17 is across the timerpoints27 528 a non-inductive resistance is connected and that connected across the governor points loand .46, both, for the purposes well understood in the art. Y

l l hile I have shovvnand described: eertaindetails of one form ofmy invention, 1 do not Wish to be limited to the exact details herein illustrated, as it will-be apparent that numerous changes maybe made without :de-

iartinc' from the spirit of in T invention and the SCOPQ'OL the appended clalms.

Having thus described my invention What- I claim is '1. ln a phonograph, rotatable sound record body support, electro: magnetic motor means for driving: saidsup port, device controlled by the angular position of said support "forenergizingsaid motor means intermittently as the support operated by the phonograph tonearm and when moved to playing position for giving the rotating support a startingimpulse to insure the operation of aid derice in ienera gizing' the motor means intermittently,and for closing a break in the circuit through. said motor means. i

In a phonograph, the combination of a rotatal ile sound record bod-y support, electr'oria 'netic motorineans, for driving said support, a devicecon rolled by the angular position of said supp forenergizing-said motoinneans intermittently as the support rotates, means constructed and arranged to be operated by the phonograph toneiarm when moved to playing ipositionzytorjgir ingthe rotating'support avstarting impulse,

to insure the operation of said device inert ergizing the motor means intermittentlyiand :to'r closing a brea iziu the circuit through,

said motor means and further means operated by the tonearmat the end of the playing position for effecting a break in the motor circuit-and subsequentlyto apply a hralr to the rotatable support to stopwit;

3. In a phonograph, the combination a rotatable sound recordbod suanort elee tromagnetic motor means Ptor driving said support, .a. device controlled by the angul position of said support for energizing sal motor means intermittently asthe support rotates, meansconstructed and arranged to beoperatedby the phonographtone arm \vhen moved toplaying position for giving the rotating support a starting impulse to insure the operation or said device in energizing the motor means intermittently and for closing a break in. the circuit through said imotor means, and fL1itl1Gl-;H16it;IlS operthe combination of a rotates, means constructed and-arranged tobe',

ated 1y tone arm at the end or the play po vion for tripping the first mentioned means from its-positioniset by the tone arm to cause said means to effect a breakin the motor circuit and apply abrake to the rotating support, v

4.. In a phonograph, thecomhination of a rotatable sound record body support, electromagnetic motor means for driving said support, a device controlled by the angular p0 ition of said support for energizing said in .or means intermittently as the support rotatesnueans consisting of a compound lever, in i hich one part is capable oat movement in one direction independent or movement of the rest of the lever and which first mentioned, part is constructed and arranged with r; pect to the rest of the lever so that; when acted on by the phonograph tone arm when moveduto playing position it moves the .restct the lever to cause the same to givethe rotating support a starting impulse and tOxClOSQ a break inthe electrical circuit throughsaid motor means; and when acted .on by the tone arm in being moved to inoperative position it tips the rest of the lever to open said circuit and brake the rotatingsupport,

5. In a phonograph, the combination of a rotatable sound record body support, electromagnetic motor-means for driving said support, adevice controlled by the angular position ot' said support for energizing said motor means intermittently as the support rotates, means consisting of a compound lever having one portion constructed and arranged so that when acted on by the phonograph t ne arm, in being moved to playing position, the rest of the lever is caused to givethe rotating support a starting impulse and to close a break in thecircuit through the motor means;

, 6. In aphonograph, the combination of a rotatable sound record body support, electromagnetic rnotormeans for driving said. support, a device controlled by the angular positionotsaid support tor energizing said motor means intermittently as the support rotates, means consisting of a compound. lever having one portion constructed and arranged so that When acted on by the phonograph tonefarm, in being moved .to playing positiomthe rest of ti e lever is caused to give the rotating support a starting impulse and to close a break in the cir cuit through the motor means, and a second lever, constructed and arranged so as to be acted on by the tone arm when it reaches the end of the playing position for tripping the first lever so it will open the said circuit and brake the rotatable support.

:7. In a phonograph, the combinationiof a rotatable sound record body support, electromagnetic motor means "for driving said support, a device controlled by the angular positionof said supportfor energizing said motor means intermittently as the support rotates, means consisting of a compound lever having one portion constructed and arranged so that'when acted on by the phonegraphtone arm, in being moved to playing position, therestofthe lever is caused to j give the rotatingsupport a starting impulse and to close a break in the circuit through the motormeans, anda second compoundv lever having, one portion constructed and arranged tolock that part. of the first men- "tioned lever which closes the said circuit when said part has been moved to said closed position; and another portion constructed and arrangedto be acted on by the tone arm when it reaches the end of the playing p sition for operatingth'e first portion to trip fits lock with the first mentioned" lever Whereby the said lever moves to open said vcircuit and brakes the rotatable support.

8.In a phonograph, the combination of a rotatable sound record body support, electromagnetic motor means for driving, said support, a device controlled the'angular" posit on of sand support for-energlzing sa d motor means intermittently as'the support rotates, means conslst ng of a compound 1ever having one portion constructed and arrang-edso that when acted on by thephono graph tone arm, in bBlIlfZ. moved toplay ng position, the rest of the lever 1s caused to,

' give the rotating support a starting impulse and to close a break in the circuit through the motor means, and a second compound lever having, one portion constructed and arranged to lock that part of thefirst mentioned lever which closes thesaid circuit When said. part has been moved to closed position; and another portion having tvvo members capableoi relative adjustment for varying the time'of engagement by; the, phonograph tone arm whereby the action of port.

11. In aphonograph, the combination of the tone arm on" the member engaged b it" 1 v moves the otherfor. said tWomember-s so as to move the trip portion ofthe second compound lever so thatfthe said lever held in locked position is releasedand opera the circuit andbrakes therotatable support.

9. In a phonograliih the combination of? av rotatable sound record body supportelee tricmotor means for driving said support, a tone arm, a lever operated by thetone arm for giving an initial start to the said rotatable support and for closing the motor circuit and 'a second lever operated by the tone arm for tripping the first mentioned lever-to open the'motor'circuit and, apply a brake to the rotatable support.

tatable' support and for closing the motor circuit, a second lever for locking the first lever in circuit closing posltionand adapted to be actedon bythe tone arm to trip the v first mentioned levertor opening the circuit vand applying a brake to the" rotatable supa rotatable soundrecord'body support electric motor means for driving said support, 1 i

a tone arm, a lever operated by the tone arm euit, asecondflever for locking the first lever in circuitclosing position, said second lever having'a portion adiustable to suit the path, ci -travel Offiitld tone arm, said tone arm actingon the second lever to trip it from engagement with the first mentioned fa}; i I lever as and for the purpose described.

In Witness whereof- I atfix my signature. Y .J. TOlMILINSON, H

v 754 "for giving an initial start to the said rotatablesupport and for closing the motor cir

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