US2416583A - Record player - Google Patents

Description

Pelz.v 25, 1947.v A. B. HARTLEY ET AL 2,416,583.

' RECORD PLAYER Filed March 1o, 1944 INVENTORS ARNO/ B. HAQTL EY H/LL/,S W. HOLT BY v TTOQNEY Patented Feb. 25, 1947 RECORD PLAYER Arnold` B. Hartley and Hillis Holt,

New York, N. Y.v

lApplication March 10, 1944, SeriaINo. 525.906v

s anims. (c1. 274-49.)

This4 invention relates to record players'.

Records' used in radio broadcasting stations are mostly of or 12 diameter to beplayed at'l8 revolutions per minute and of 16" diameter to be. played at' 331/3 revolutions per minute'. The presentv record players used in broadcasting stations` can be operated either at '78- R. P. M. or 33% R. P. M. Sometimes a mistake is made'k and a record isset to'play atthe Wrong speed, making it necessary' to change the speed-'of the machiney or record playery sometimeswhiie the broadcast is-on. It isthereforean objectv of the present4v invention to provide a device of the Vcharacter describedA in which it is not possible to pl'ay a record at the wrong speed.

A further object of" this'inventi'on is` to provide a recordf'player of the character described comprising' anouter turn table for receiving" 16l records andT rotating at 331/9,l R. P. andan innerfturn table within the larger turn table, for

yreceiving I0." lor 12"" records and rotating at '78 R2 P'; M?. The smallerI turn1 table is at al lower level thanthe outer turntable. Both'turn tables rotatef concurrently, but at different speeds. 4Ii

the larger record is set on the turn Atable it will rotate at the correct speed sinceit does not contact the smaller turn table, and if the smaller record isf placed on the inner turn table it will rotate" at the correctspeed without touching theouter turn table. y

A very small percentage of small records (1'0" or 12`") are made to be played at 331/3l Rv. P`.`M. Itis therefore a further object of this invention to: provide a machine of'thecharacter described having manually settabl'e means to additionally permit playing of a smallV record at 331/3 R. P. M.L

Still another object of this' invention 4is to pro-V vide a durable' and'compact machine ofthe character described' which shall be relativelyY inexpensive to manufacture, which shall Abe: smooth and positive operation, and yet practical and eiilcient to a high degreevfin use.

Other objects of this'rinvention ywill in part be obviousr and in partl hereinafter pointed out.L

'I'hef-v invention accordingly consists i'n the fea tures of construction; combinationsofv elements, and arrangement of partsv which will be exeme plifl'ed in the constructionY hereinafter described,

and of which the scope*y of application will be indicated in the followingl claims.

In; the.; agcc'ornpanyiv g drawing;r in' which is shown oneof the various'po'ssible illustrant/eem# bodiinents-=` of. this: invention,

Fig. 1 'is amelevational cross'sectional@ViewA of 5&5y

arecordy player' embodying: theu invention-;.. i

y ing on: the inner race and a reduced portion 22=^ Referring now' in detail to the provided with a hub Il2.k Above the frame isla table Ila formed with a hole II'b. Within the hubIZ is a speed reducingbal'l bearing planetary transmissionV transmission comprises anv outer' race llt' fixed: within the hub I2 and' an inner rotary race Iii-L Between the inner race I5 and the outer race I4" are spaced balls I6 frictiona-lly engaging grooves'V in said inner and outerraces |34', |25. Eiirteri'ding'I through the inner race l5 is av vertical" shat 2llf` passing upwardly through .holeI'Ibintable II'a. Said shaft' comprises an enlarged:portionv 2I restprojectingl through the inner race, and a still fur--v ther reduced screw threaded portion 23 below saidinner racej.

the innerrace for rotationvtherewith. Extending downwardly from the screw thread-- ed portion 23 is aV shaft portionfZS on which isy The speed reducing ball a speed ofV 331/3 R; P'.' MQ f y Extending'upwardlyrfrom shaft portion'ZI 1s a reduced shaft portion on the upper endof which isK4 mounted-a turn table 36 a little over* 12 in diameter, for receiving and' playing 10'. or 12"" records. Extending upwardly from the` turntable is a central pin'31 to engage within* the' central openings of' the records. The turn' table 36 may be provided witha felt pad covering 38. On the turn table is shown arecord 46.

It will now be understood that 101" or' 12f"'rec ords may be placed on'turn table 36 and' played at '78' R'. P; M. Most 10" or 12 records' are so made that they must be played"r at 'T8 R. P'. ML

Means isl provided to play the. large' lffrecft ords at 33% R. P.-M. To this endthereismountn ed von shaft portion 2l and, surrounding"shaft!V portion: 35; a sleeve-5ll passing Y'i'.hrough'hole IfI'bl and vfbrmedwith'aniannular fiat -fl'ang-e 51V at'its drawing, Ill'A designates a record player embodying the invern-fA tion. The same comprises a horizontal frame: II?

I3 of usual construction. fSaid-i On the screw threadedportion 23' is 3a lock nut and washer 2llA to flxshaft` 2l!v to such that the; shaftA 25 is-ro`V y, Y v

i I 3 is so" designed that? f the ballsV I6 rotate about the axis of shaft at Vof placing a large record on a at disci or plate of "about 14'. diameter and formed withya central openingmay be placed. onthe large'turn table, and the small record.

vfixedfto thek hub 18.

- rounding turn table 36 and having an outer diameter somewhat larger than 161. The upper surface of turntable portion 54 is preferably at a somewhat higher` level than the top surface of turn table portion 36. The outer turn table may also be provided with a felt pad covering 55. Y

The sleeve 50 is freely rotatable relative to shaft 20. Fixed to the lower end of sleeve 50.`

is a skirted annular portion 51 having a castellatat a speed of '78 R. P. M. The planetary system 80 is so designed that the balls 90 and hence sleeve 88 will rotate at a speed of 331/, R. P. M. Plate 88 has an annular ange 88a at its upper end. Fixed to flange 88a is an outer turn table 95. Said outer turn table comprises a bottom plate 96 mounted on said flange 88a. Extending upwardly from bottom plate 96 is a cylindrical wall 91 surrounding the inner turn table. At-

.tached to the'upper end of wall 91'is ai turn table top 99. The inner turn table 82 may be provided ed lower end forming'teeth or projections received between the balls IB. As the balls rotate about the axis of shaft they will cause rotation of member 51 y'and hence vouter turn table 52.

It will now be understood that both turn tables rotate .concurrently when the motor is on, the

innerturn table at '78 R. P. M. andthe outer Vturn-table at 331/3 R.`P. M. If a large record is placed on the outer table it will rotate at 33% RIP. M. because it will not touch the inner turn table which is set at a lower level. i

A small percentagef 10" or 12 records are made to beplayed ate33l; R. P. M. They can be played at that speed on the record player `I0 by rst placing a large record on said player 331/3` R. P. M., or a large record-at 78 R. P.M.

and then placing a small record on the large rec- Y ord and playing the small record. The small record .will thenrotate at 331/3 R. P. M. Instead the outer turn table,

to be played then placed on said plate or disc.

VInv Fig. 3 there is shown a record lplayer |0a whichgis provided with means for playing small records kat'78 R. P. M., large records at 331/3 R.. P.`M., and which is further provided withV is avertical sleeve`16. Onthe lower end of said Vsleeve is a worm gear 11 meshing V.with theworm 14; .Fixed on frame V12 is saidfsleeve 16 passes.' i

kInterposed between therhub 18 ,and sleeve 16 is a speed reducing ball bearing planetary a hub 18 through which transmission similar to the Vone shown in Fig. 1. f Vv.Fixed-to thevupper end -of sleeve v16 is a plate 8|.

Resting on plate 8| is an inner turn table 82.

It is formed at its outer hereinafter appearing.

ARotatably mounted. on

8| and hub 18, is' a sleeve 88 provided with downwardly I extending castellated teeth 09 1 received between the balls 90 ofthe planetary transmission 80.` Said transmission comprises an inner race S32-,fixed tothe s leeve'16 and an outer racev 93 The motor 13 and thev gearing'14,.11 is soset as to rotatesleeve 16.

-Extendin'g therethrough sleeve 16 between plate A60 Said inner turn table has a central opening 83. rimwith adownwardly extending cylinder portion 84 from which there 1 extends outwardlya flange 85 for the purpose'.-

at a" speed of 7 8 R.l PL M. The innerturnV table 82,'-2'when it rests.on plate al. .thus-'also rotates! with a felt pad 82a, and the turn table top 99 maybe provided with a felt pad 99a.

The outer turn table portion 99 is at a somewhat higher level than the inner turn table when the `"inner turn table rests on plate 8|. Thus, when the motor. is operating, the inner turn table rotates at '78 R. P. M. and the outer turn table rotates at 331/3 R. P. M. Should a small record be placed on the inner turn table it will rotate at the ,correct speed. Should a large record be placed on the turn table it will also rotate at the correct speed.

It will be understood that in both devices I0 and |0a, when the machine is operating normally, it is not possible to play a' small record at 'In device |0a however, normally settable means-A is provided to additionally permit playing of a.:

small recordat 331/3 R. P. M. To this endtherel is xed to the motor 13, -a bracket |00 provided with a pivot |0|. Pivoted thereto is Va lever |02 having one arm v|03 extending below thesleeve 16 and a second arm |04 extending in an oppositeA direction. 1

Slidably mounted within sleeve.V 16 is ajrod |05, t

thelower end of which contacts arm |03. At-` the upper end -of rod |0 5, is a reduced ,pin |01; passing throughthe central opening 83 ofthe-- 'Ifherodi |05 has a shoulderzi inner turn table. just below its pin |01 adapted toengagetheinner turn table |02 to lift the same off plate 8|V and to Vbring the ange 850i said inner Vturn"V table into contact with the turn table top 99.

Thus rod |05 can be caused torelease the inner turn table from platefl and engage the same-- with the outer turn table.V Thus uponlraising rod;v 05 the inner turn table is caused to rotate at 331/3 R.P. M. instead of 78 R. P. M.V AIf a small g record is on the raised inner turn table Vit will rotate at 33%; R.Y P. M..instead of 78 R. P. M."

VOnthe table 10 is a bell crank 0 provided with a handle The bell crank is pivoted to a bracket ||2 fixed to the table and provided with a pivot H3 for such purpose. Bell crank ||0 has an. arm' I4 for the purposehereinafter,appearg ing, :The table 10 is Lformed with a through opening l5. Extending through said opening isa-1' rod ||1 connectedat its lower end to arm |04.:

of lever |02.

lA spring |20 normally tends to rotate the bell- However', f

crank 0 ina clockwise direction. shouldthehandle lI|| be grasped and the bell crank 1| 0 rotated in a counterclockwise direc- Y tion, rod I1 would be depressed causing rotation of lever |02 and raising of the rod- |05 for the purpose aforesaid.

Any suitable catchmay be provided if desired, position for keeping.;

to retain the bell crank ina theinner turn table raised.V Y Itvwilltl'ius be seengthatfthere isv provided a device Vin which the severalobjects '.of Y' this Ainf is' wellzadapted vention are achieved, and which to meet the conditions of practical use.

various possible embodiments might be i is to be interpreted as illustrative and not in a v limiting sense.

Having thus described our invention, we claim as new and desire to secure by Letters Patent:

1. A record player comprising a shaft, a turn l table on said shaft, a `sleeveysurrounding said shaft, an outer turn table on said sleeve, said outer turn table having an annular table top surrounding said inner turn table, and at a higher level than said inner turn table, speed reducing means interconnecting said shaft with said sleeve, and means to rotate said shaft and means to center records on either the inner turn table or outer turn table.

2. An outer turn table having a central depressed portion and an outer portion adapted to support a record placed thereon, an inner turn table within said depressed portion adapted to support a record placed thereon, the upper surface of the outer portion of the outer turn table being at a higher level than the inner turn table, and means to rotate said turn tables concurrently in the same same direction at different speeds and means to center records on either the inner turn table or outer turn table.

3. A record playing device comprising a horizontal frame, a Vertical shaft rotatably mounted on said frame, a sleeve surrounding said shaft, a turn table of smaller diameter on said shaft, a turn table of larger diameter on said sleeve, said second turn table being formed with a recess receiving the smaller turn table, a speed reducing ball bearing planetary transmission between said shaft and sleeve, and means to rotate said shaft.

4. A record player comprising a sleeve, a rod passing through said sleeve, an inner turn table resting on said sleeve and disposed about said sleeve, a rotary hub surrounding said sleeve, speed reducing means interconnecting said sleeve with said hub, means to rotate said sleeve, an outer turn table on said hub concentric with said inner turn table, the upper surfaceof the outer turn table being normally at a higher level than the inner turn table, means for raising said rod to lift said inner turn table off said sleeve, and means on said inner turn table adapted to engage the outer turn table when said inner turn table israised by said rod. Y

5. A record player comprising a sleeve, a rod passing through 6 v said sleeve, an inner turn table resting on lsaid sleeve and disposed about said sleeve, a rotary hub surrounding saidsleeve, speed reducing means interconnecting said sleeve with said hub, means to rotate said sleeve, an outer turn table on said hub concentric With said inner turn table, the upper surface of the outer turn table being 'normally at a higher level than the inner turn table, means for raising said rod to lift said inner turn table off said sleeve, means on said inner turn table adapted to engage the outer turn table when said inner turn table is raised by said rod, and manually operated means to raise said rod.

6. In a record player, a turn table adapted to support a record placed thereon, a second turn table having a flat annular surface surrounding the first turn table and adapted to receive a relatively larger reoord placed thereon, means to r0- tate said turn tables concurrently at different speeds, a common means to center records placedy turn tables being so larger record may be on either turn table, said arranged that a relatively placed on the second turn smaller record on the first turn table while both turn tables are in normal position, said turn tables being at diierent levels so that a record placed on the second turn table will be in spaced overlying relation with respect to the first turn table.

ARNOLD B. HARTLEY. HILLIS W. HOLT.

Name Date I Keast et al Oct. 7, 1913 Number Carson et al Feb. 1, 1938 Capps et al May 15, 1934 Suomala Feb. 1, 1938 Barton Feb. 1, 1938 Clark Feb. 21, 1922 Richman Sept. 13, 1921 MacDonald Nov. 14, 1911 Fritz Apr. 5, 1932 FOREIGN PATENTS Country DateY Number British Jan. 8, 1931 table or a relatively y Myers Nov. 22, 1,938

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