US1486958A - Phonograph - Google Patents

Description

March 18, 1924. Y 1,486,958

l W. E. GIBBS PHONOGRAPH Filed May 1, 1920 s sheets-sheet 2 March 18 1924 W. E. GIBBS PHONOGRAYH Filed May 1, 1920 5 Sheets$heet 5 Patented ar.. ld, i924.,

WILLEM E. GIBBS, OF EAST ORANGE, NEVI JERSEY,

PATENT COMPANY, OF Elf JERSEY.

ASSIGNOR T NEW JERSEY ORANGE, NEW JERSEY, A CORPORATION OF NEW rnonoeaaris.

Application led May 1J To @ZZ 'whom t lmay concern:

Be it known that l, WILLIAM E. Gines, a citizen of the United States, and a resident of East Orange, in the county of Es, sex and State of New Jersey, have'inade certain new and useful improvements in' Phonographs, of which the following is a description.

My inventionrelates to phonographs, and more particularly though not exclusively to disc phonographs of the Edison typerEhe principal object of my invention is to provide an improved governor for a motor-driven device or mechanism such as a phonograph, whereby it is insured that such device willbedrivcn at the .constant and uniform speed desired 'throughout the operation of the motor regardless of variations in theA power or torque exerted by such motor in driving said device, and the construction of which is such that the action thereof in maintaining the speed at which said device is d iven, is preferably not dependent on fluctuations or variations in such speed, as is usually the case in such governors, especially. those of the centrifugal typ-e.

My invention also contemplates a governor of .this character which is extremely efficient and simple in construction, which lis unlikely to get out of order or function improperly and which is adapted whenused for a phonograph, to be Yactuated directly bythe comparatively slow-rotatingshaft on which the record support or turntablepis mounted. Y

Another object of my invention resides in the provision in phonograph, especially a disc phonograph of the Edison type, of improved means for automatically effecting the stopping of the phonograph at a predetermined point in the operation thereof and preferably comprisinga brake coacting with a part of the governor; the construction and arrangement preferably being such that the turntable or record support may be removed from. the phonograph without releasing such braking means.

A further object of my invention resides in an improved construction and arrangement of a phonograph mechanism within a cabinet whereby theparts of such mechanism are rendered readily-.accessible for cleaning, adjustment or other purposes.

Other objects and features of my in- 1920. Serial No. 378,182.v

vention will be hereinafter more specifically described and claimed.

In o-rder that my invention may be more clearly understood, attention is directed to thedrawings accompanying and forming a part of this specification and in which:

Figure l is a plan view, partly in section, of a phonograph having my invention applied thereto, the phonograph mechanism eing shown in operation with the brake mechanism held inoperative, the motor being omitted and the turntable being shown in dotted lines;

Fig. 2 is a view similar to Fig. l showing the phonograph held inoperative by the brake mechanism which has been released by movement of the sound conveyer transversely of the record supportl to the position shown;

Fig. 3 is a fragmental sectional view taken on line 3-3 of Fig. l, parts being omitted;

Fig. 4 is a sectional view taken on line 4 4 of F ig. 2, parts being shown in elevation and parts being omitted;

Fig. 5 is an enlarged detailed sectional view, partly in elevation, of the upper end portion of the turntable shaft and parts associated therewith and Fig. 6v is an enlarged view inside elevation ofA adetail of construction.

Referring to Athe drawings, reference character l represents the casing or cabinet of the phonograph and A a supporting frame which is mounted in the upper end portion ofthe cabinet. The frame A comprises a rectangular top plate 3 provided on its Vunder side and adjacent its rear edge with Va pair of spaced apertured lugs 4, L through which a cylindrical rod 5 extends, this rod being suitably secured to the top-plate, as by means of set screws (not shown) threaded into the lugs'd, 4. The ends of th-e rod 5 are respectively piv- Votally mounted in horizontally aligned cylindrical sockets 6, 6 provided in brackets 7, 7 which are suitablysecured, as bymeans of screws, to the opposite side walls of the cabinet l. The top' `plate 3 is also provided on its underside adjacent its front edge, with a downwardly extending lug 8 whiclrnormally engages a horizontal rod 9 which extends across the cabinet l parallel to and substantially at the same height as the rod 5 and which is mounted at its ends in opposed brackets l0, lOxsecured, as

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the opposite side rlhe sockets 6, 6

preferably open upwardly to permit the rod 5to be litted therefrom. lt will thus be seen that the top plate 3 oi the support A is normally maintained in a horizontal position in the cabinet 1 and that the support and parts carried thereby may be swung upwardly about the axis of the sockets 6, 6 and il desired may be lifted out el" the cabinet, providing the sound conveyor and parts carried by the latter, which will hereinafter be described, are properly positioned.V

The support A is provided with a pair ot depending brackets in which any suitable motor, such as the spring motor 11, tor driving the phonographl mechanism is mounted, only one 'of these brackets 12 being shown. Reference vcharacters 13, i3 represent winding gears for the motor 11, and 'lll a'braclet dependingfrom the support A and provided with a hub 15 having a cylindrical recess for the reception ot the winding crank, `(not shown). The motor l1 is provided with the usual worm wheel 16 which is in driving engagement with a worm U' cut on the vertical turntable shaft 18. The turntable shaft 18 is supported at its lower end on a ball step bearing 19 carried by the lower end of a downwardly extending arm 2O oit bracket 21 comprising a part oic the Supporting trame A. The bracket 21 is secured, as by means of one or more screws 22, to the underside of a central circular depressed portion 23 ot the top plate 3, and has a horizontal arm 24 engaging the lower surface ot Vsuch portion 23 and provided with an upstanding cylindrical lug or boss 25 which extends into and tits closely a central opening 26 extending through the portion 23'. The portion of arm 24 or bracket provided with the lug 2 5, as an opening through which the turntable shait 18 er;- tends and in which it is journalled. The shaft 18 extends a considerable distance above the centrally depressed portion 23 oi. the top plate and has a cylindrical. enlarged upperend portion 27 which is provided with an axial tapered or conical recess 28 adapted to receive a tapered or conical pin 29 extending irom and suitably secured to the underside 'of the rotatable record support or turntable 30 at the'center thereof. HetV erence character 31 represents the reproducer which is connectedto and supported 4torinov'ement transversely of the record support :or turntable 30 by the tapering sound conveyor or amplier 32, the latter entendinc' rearwardly from the reproducer, then-:fe downwardly `in the cabinet past the top plate 3"Y and thence'forwardlytoward the front of the cabinet beneath the supporting jiframe A andthe motor 11, and other parte carried'therebyg The large horizontally ex- Vord on the turntable 30.

tending exit portion 33 of the sound conveyor or amplifier 32 terminates in the rear of the tro-nt ot the cabinet l adjacent an opening 341 therein.V rlhe so nd conveyer is suitably secured adjacent its as by means a pair or brackets 35 (only the upper one o which is shown) to vertical rod 36 which is pivotally and slidably mounted in a pair or" vertically aligned bearings 3'?" formed in suitable bracfets 38 secured to the cabinet 1, only the upper bearing 8? aud bracket 38 being shown. A horizontally extending arm 559 is pivotally mounted adjacent one end in a pair of spaced lugs ll() provided on the upper bracket 35, extends rearwardly :from said lugs and is provided at its rear end with a segmental rack el. The rack l1 is adapted to engage with and be driven by a worm l2 mounted on a horizontal shaft 43 adjacent one end thereof, the said shaft t8 being supported and ournalled in a pair ol' spaced brackets (only one et which is shown) depending trein the top plate 3 andV comprising a part of the supporting traine Secured to the sliait 43 adire nt its other end is a worin wheel l5 which e y ages and is driven from a worm i6 on a boss or sleeve provided on the turntable shaft 18 ust above the worm. 1.7. lllhen the phonograph is in operation, the shaft i8 and thereby the worm 12 are rotated by reason oi" the driving eugageinent ot the worin d6 worin wheel l5, and the worm l2 reacting with the mental raclr Ll1 causes the sound conveyer or ampliiier 3Q to swing about the axis oi rodV b6 so as to impart to the reproducer 31 a feeding movement transversely ot the record on the turntable 30.` Tle rod 36 e2;- tends a slight distance above the upper bearing 37, and a member having a handle l? is pivotally secured at Il@ to the tippt-zr end portion of said rod. Below the pivot +8 this member is provided with pair et similar spaced cams 4:9 engaging the upper suriace ot the upper bearing 3? whereby the letter serves to support the. sound Vconveyor and the parte carried thereby The construction is such that when the handle i157 is in a vertical position, as shown in g. 3, the sound renvoyer or amplifier 32 will be supported troni the bearing 37 in its lowerinost .and operating position with the reproducer 3l in operative relation to the ref:- ord on the turntable 30 and with the segmental fceding rack el in engagement with its driving worm 4t2. Upon turning the handle 47' to the right from the position shown in 3, however, the cams coact with the upper bearing 37 so as to effect upward movement of the rod 36 in the bea-rings 37 and thereby the raising of the sound conyeyer 32 so as to nieve the re'iiropuicer to inoperative position with respect to a rec- 'llie arm 39 ex- SFS Uri

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ifi-gs tends forwardly a slight distance from its pivotalmounting, and a vertical headed member 56 secured to the upper bracket 35 extends loosely `through the forwardlyextending' portion of the arm and through a coil spring 51 disposed between the arm and the braclret 35. The spring 51 constantly tends to move the arm 39 to the right about .its pivotal axis (referring to Fig. and maintain the rack l1 in engagement with the worin e2. Theheaded member 50, however, so limits this movement of the arm that the Vraclr 41 will be disengaged from the worm 42 when the sound conveyer 32 is raised by turning` the handle Li7 from the vertical positionL shown in Fig. 3 to a hori- Zontal position. l/Vhen the raclr 41 is thus disengaged from'the worm 42, the sound conveyer or. amplifier 32 and the parts carri-ed thereby may be freelyv swung about the axis of the ro`d36. lf the conveyor 32 is then swung to the position shown in dotted lines in 1, the .rack el will be so positioned as not to be engageable with the worm 12, and accordingly the support A and parts carried thereby mayeither be swung upwardly about the axis of rod 5er be lifted entirely out of the cabinet 1 forinspection,

cleaninoor re airin lof the arts carried' by the support A, orlfor any other purpose.

The central circular depressed portion 23 ofthe` top plate 3 is provided with an upstanding` annular rim 52 having an` inner annular braking surface concentric with the shaft 18, and comprising a part of my improved governor.` rl"he central portion 23 of the top plate andthe lower 'portion of 4the rim 52 are provided with a largeopen- ,ing or cut-out O through'which the upper portion of the motor 11 projects.` The shaft 18 i5 provided just below its upper enlarged end portion 27 with a pair of collars or annular flanges 53 and 54, the upper collar 53 preferably being of Vgreater diameter than the lower collar 5e. A horizontal .circular disc 55 having an upstanding annular rim or flange 56Ais rigidly secured to the lower collar li of the turntable shaft 18, such disc preferably being provided with a `central circular opening in which the collar 5dhas al tightfit; and a straight arm 57 loosely mounted midway between its ends on the enlarged upper end portion 27 of shaft V i8, is supported on the upper collar or flange 53 by means of a'ball-bearing 58. ""Two weights 59, 59 are respectively"'piv'otally mounted at 60, 66 on the ends of arm 57 and entend from such arm in opposite direc` tions within the casing formed by the annular rim 52 and the centralportion 23 of the top plate-3. ,These weights are respectively provi led with brake pads 61, 61 which extend therefrom at' their outer edges, lugs 62, 62 at their inner ends adapted to cooperate with the arm 57 for limitng the movement of the weights inwardly, and lugs 63, 63 at their outer ends which are respectively connected by means of springs 64, 6e to lugs 65, 65 provided on the rim 56 of disc 55 at diametrically opposite points. A gear 66 in the form of an'annulus, is rotatably mounted on the collar 53 of shaft 18 and engages a small @ear 67 fixed on the reduced end portion 68 of a vertical rod 69. Above the gear 67 the reduced portion 68 of rod 69 is rotatably mounted in a segmental plate 70; and a spring washer 71 disposed between the plate 70 and a shoulder 72 on the rod 69 normally frictionally holds the rod 69 and thereby the gear 67 against rotary movement with respect to the plate 70. Below the gear 67 the reduced end portion 68 of rod 69, taires loosely into an opening provided in the disc 55. The segmental plate 70 is suitably secured tothe disc 55 as by means of screws 7 3 and is provided with a depending flange 7d at its periphery which serves to space the main portion of the plate 70 from the disc 55 a distance slightly in eX- ces's of the thickness of gear 67. lt will thus be seen that the gear 67 and thereby the gear 66 will vnormally be held against rotary movement with respect to the disc 55 and the shaft 18. The rod 69 is provided at its upper end with a slotted head 75 which when the turntable 30 is mounted on the shaft 18 in proper position, is received ina circular opening76 in the turntable. The gear 66 has suitably secured thereto at diametrically opposite points on its upper surface, two

vmembers 77 77 `com risinc vertical )ortions '81 suitablysecured to the upper end of the hub of arm57, as by means of a screw 81', extends inwardly of the hub into an annular groove 83 provided in the upper end portion of the enlargement 27 of shaft 18 and serves to prevent displacement of arm 57 and the parts carried thereby longitudinally of the shaft 18.

The operation of my improved governor is'as follows: When the phonograph is in operation the motor 11 drives the shaft 18 and thereby effects rotation of the turntable 30, the'disc 55 and gears 67 and 66 about the axis of said shaft. The arm 57 and the weights 59, 59 mounted thereon will then be dragged or rotated about the axis of shaft 18 by means of the springs 79, 79 connectingthe arm 57 with the members 77, 77 secured to the gear 66, and suchweights will movev outwardly about the pivots 69 under cent-rif- 64, 6e and bring the brake pads 61, 61 into lil) llo

friotional engagement with the inner annular braking surface of the rim 52. The shaft 18, the dise and the gear 66 will have an angular advance with respect to the arm 57 dependent on the power or torque exerted by the motor at any time in rotating said shaft, and the springs 79, 79 will be extended or lengthened and the springs 64 contracted or shortened, that is, the effective tension of springs 79, 79 will be increased and that of springs 64, 64 decreased. If the power or torque which the motor exerts in rotating shaft 18 now increases or is increased, the angular advance of shaft 18, disc 55 and gear G6 and the tension of springs 79, 79 will be automatically further increased while the tension of springs 64, 64 will simultaneously be automatically further decreased. @n the other hand, if the power or torque exerted by the .motor in driving shaft 18 decreases, the angular advance of shaft 18, disc 55 and gear 86 with respect to arm 57 and the effective tension of springs 79, 7 9 will automatically decrease and the tension of springs 64, 64 will automatically increase. Where a spring `motor is employed such as the motor 11 shown, the power or torque which the motor tends to exert to drive shaft 18 will be at a maximum when the spring is fully wound. if the phonograph is then operated the shaft 18, disc 55 and gear 66 will assume a position of maximum angular advance with respect to arm 57 and the effective tension of springs 79, 79 will be at the maximum and that of springs 64, 64 at the minimum. Accordingly, the brake pads 61, 61 of weights 59, 59 will Vengage the annular braking surface of rim 52 with a maximum pressure by reason of the action of centrifugal force on the weights. As the spring of the motor unwinds, that is, as the power or torque exerted by the mot-or in driving shaft 18 decreases, the angular advance of the shaft 18, disc 55 and gear 66 and the tension of springs 79, 79 will decrease and the tension of springs G4, 64 will increase. Consequently, the pressure with which the pads 61 engage the inner surface of the annular rim 52, and therefore the retarding friction or braking action exerted by the governor will gradually decrease as the power or torque exerted by the spring motor in driving shaft 18 decreases. The springs 64, 64 and 79, 79 and the other parts of the Agovernor are so designed and arranged that the braking action or retard ing friction will vary directly in accordance with variations in the power or torque exerted by the motor in driving shaft 18V and, consequently, a uniform speed of the shaft 18 and therefore of the turntable 30, is obtained throughout the operation of the motor. lt will be apparent that the action of the governor in maintaining the speed of rotation of the shaft 18 and turntable 39 constant is not dependent in its action upon variations ork fluctuations in such speed. lll/'ith my improved governor it is possible to maintain a uniform speed of rotation of the turntable shaftsubstantially throughout the unwinding of the spring motor 11. 1n case it is desired to adjust the uniform speed at which the phonograph is to be driven, it is merely necessary to turn the rod 69, as by means of a screw-driver, to thereby turn the gear 66 on the collar 53 of shaft 18. rlhis adjustment will effect a. change in the normal tension of springs 64, 64 and 79, 7 9 and accordingly a change in the action of the governor which will result in a variation in the uniform speed at which theshaft 18 and y turntable 8O will be maintained when the phonograph is in operation.

A plate or bracket C is suitably secured as by means of screws to the upper side of the central depressed portion 23 of the top plate 3, andpivotally mounted at l? on this bracket is a bra-ke lever B. One arm 82 of the lever B is provided with a brake pad 88 adapted to engage With the outer surface of theV annular rim 56 of disc 55, and a spring 85 secured at one end to the other arm 84 of the lever B and at its other end to a pin on the bracket CconstantlyV tends to move the lever B about its pivot P to operative position. A detent 86 is pivotally mounted intermediate its ends on an extension of the bracket C at 87, and isprovided at one end with a latch L adapted to coact with the end of the arm 84 of the brake le ver B to hold the latter in inoperative position as shown in Fig. 1. A coiled spring 88 surrounding the pivot 87 of detent 86 constantly tends to move the latter to operative position. The end of the detent 86'opposite the'end provided with the latch L, lies in the path of the segmental feeding rack 41, the arrangement being such that the feeding rack will engage the detent so as to release the brake lever B and effect the stopping of the phonograph when the reproducer has been fed inwardly to a predetermined point, preferably a point beyond that of the innermost groove of a record of maximum length. An angular start' and stop lever S is also mounted on the pivot lD between the brake lever B and the bracket C and comprises a short inner arm 89 and a long arm 9() extending outwardly through the opening or cut-out O andbeyond the turntable 39 to apoint adj acent the front of the rasante rangement of the parts is such that When the brake lever B is held in inoperative position by the detent 86 as shown in Fig. l, and the lever S is moved about its pivot in a clockwise direction and` relative to the brake lever B as is permitted bythe spaced lugs 92 and 93, the cam 94C thereof coacts with the latch L to move the detent 86 to Y 94C will pass the latch spring 88 to move the detent to operative po! `understood that V.use with other types oi motors, and l have found that it is especially adapted for use l claim as new and desire to inoperative position' and release the brake lever B and thereby effect the stopping of the phonograph; while wheny the brake lever B is in operative position as shown in Fig. 2, and the lever S is moved in an anticlockwise direction about the pivot P, the lug 92 engages the brake lever B and moves the same toward inoperative position, and the cam 94C first coacts With the latch L to move the detent 86 to inoperative position, and then, as the end ot arm 85 of lever B is moved past the latch L, the point or" cam L and permit the sition to thereby lock theV brake lever B in inoperative position, as shown in Fig. l. The extension of bracket C carrying the pivot 87 of detent 86, is provided with a pair of lugs for properly limiting pivotal movement of the det-ent in either direction. lt will be apparent that with the construction just described, the turntable 30 may readily be removed from the shaft 18 when the phonograph is not in operation Without releasing the brake mechanism and thereby eiecting operation of the phonograph and the unvvinding of the spring ot motor 11.

While l have described andV shown my improved governor in connection with a device driven by aspring motor, it is to be the same is applicable for withelectric motors in which the power or torque exerted vduring operation is subject to frequent and Wide, variations or 'fluctuations. lt is also to be understood that my invention Vis subject to `numerous other changes and modiiications without any departure from the spirit of the invention or the scope of the appended claims.

Having now described my invention, what protect by Letters Patent of the United States is as follows:

l. ln combination, a rotatable member adapted to be driven by a motor, a governing device for controlling and regulating the speed of rotation of said member, and means responsive to variations in the power exerted by the motor in driving said member and acting on said governing device to vary theV VrotationV of said member,

motor connected to drive said member, 'a governing device exerting a 'braking action to control the speed of said member, and means responsive to variations in the power exerted by the motor in driving said member and acting on said device to vary the braking action exerted thereby in accordance with said variations, substantially as described. l

8. In combination, a rotatable driven member, a motor connected to rotate said member, a governing device exerting a braking action to control 'the speed of rotation of said member, and means responsive to variations in the, torque exerted by said motor in rotating said driven member and acting on said device to vary the braking action exerted thereby in accordance with said variations, substantially as described.

4. In combination, a driven member, a spring motor connected to drive said member, a governing device exerting a braking action to control the speed at which said member is driven, and means responsive to variations in the power exerted by the spring of said motor indriving said member and acting on said device to vary the braking action exerted thereby in accordance with said variations, substantially as described.

5. In combination, a rotatable driven member, a spring motor connected to rotate said member, a governing device exerting a braking action to control the speed of and means responsive to variations in the power exerted by the spring of said motor in rotating said member and acting on said device to vary the braking action exerted thereby in accordance with said variations, substantially asdescribed.

6. In combination, a rotatable driven member, a motor connected to rotate said member, a governing device exerting a frictional braking action to control and regulate the speed of rotation of said member, and means responsive to variations in the torque exerted by said motor inv rotating said driven member and acting on said device vto vary the frictional braking action exerted thereby in accordance with said variations, substantially as described.

In combination, a rotatable driven member, a motor connected to rotate said member, a governing device exerting a braking actionV to control the speed of rotation of said member, means responsive to variations in the torque exerted by said motor in ro` tating said' member and acting on said device to vary the braking action exerted thereby in accordance with said variations, and means for adjusting said device to regulate the speed at which said member is rotated, substantially as described.

8. In combination, a rotatable driven member, a motor connected to rotate said said element under centrifugal action,

member, and a governing device for controlling and regulating the speed of rotation of said member, comprising means providing a fixed annular friction surface, a member loosely mounted for pivotal movement With respect ,to said rotatable member, resilient means connecting said members, a centrifugally Voperable element movably mounted on said loosely mounted member and having -a braking surface adapted to coact with said friction surface, and resilient means connecting said element and rotatable member opposing movement (gf su stantially ias described.

9. In combination a rotatable shaft, and a governing device for controlling and regulating the speed of rotation of said shaft, comprising means providing a fixed annular friction surface, a member loosely mounted on said shaft, resilient means connecting said member and shaft, a centrifugal Weight or Weights movably mounted on said member and each having a braking surface adapted to coact With said annular friction surface, and resilient means connecting said shaft and said Weight or Weights and opposing movement -of the latter under centrifugal action, substantially as described.

10. In a phonograph, the combination of a rotatable turntable shaft, a motor connected to rotate said shaft,'a stationary annular friction f`ring surrounding said shaft, a member -loosely mounted on said shaft and provided With one or `more centrifugal Weights movablyv mounted thereon and each having a braking surface Yadapted t'o coact With said friction ring, resilientmeans connecting said member and shaft, and resilient means connecting said shaft to each of said Weights and 'opposing movement of the latter toward said friction ring, substantially as described. y

' 11. Incombination, arotatable shaft, and a governing device for controlling and regulating thespeedat Which said shaft is rotated, comprising a stationary friction ring surrounding said sha-ft, a member loosely mounted on said yshaft and provided V With one or more centrifugal Weights movably mounted thereon and each having a braking surface adapted lto coact with said ring, an element normally rotatable with said shaft but angularly adjustable With respect thereto, resilient means connecting said element andV member, and resilient means connecting said shaft and said Weights opposing movement of the latter toward said ring under centrifugal action, substantially as described. Y

12. In combination, a rotatable driven shaft, anda governor-for controlling and regulating `the speed of said shaft, comprising means having a fixed annular braking surface, surrounding said shaft, a centrifugally operable member adapted to cooperate With said braking surface, mounted for rotation about the axis of said shaft and adapted for movement towards said braking surface under centrifugal action, a connection comprising a resilient element between said shaft and. said member to effect rotation of the latter about the axis of the shaft When the shaft is rotated,and

resilient means opposing movement of sai member toward saidbraking surface under centrifugal action, the arrangement being such that when the energy of said motor decreases in the operation thereof, the tension of said resilientelement `and said resilient means Will automatically be respectively decreased and increased, substantially as described.

13. In combination, a rotatable 'driven shaft, a motor connected to rotate said shaft, and a governor for controlling and regulating the speed of said shaft, comprising means having a fined annular braking surface surrounding said shaft, a centrifugally operable member adapted to co-operate with said braking surface, mounted for rotation about the axis of said shaft and adapted for movement towards said braking surface under centrifugal action, a connection comprising a resilient element between. said shaft and said member to effect rotation of the latter about the axis of the shaft when the shaft is rotated, and resilient means opposing movement of said member toward said braking surface under centrifugal action, the arrangement being such that when the energy of said motor decreases inthe operation thereof, the tension of said resilient element and said resilient means will automatically be respectively decreased and increased,and when the energy of the motor is increased during operation thereof, the tension of said resilient element and said resilient means will automatically be jrespectively increased and decreased, substantially as described.

14. In a phonograph, the combination of a vrotatable record support, a shaft on which said supportis mounted, a sound conveyer mounted for 'movement transversely of said support, feeding means for en'ecting said movement of the sound conveyer comprising an element carried by said conveyer, a member provided with a braking surface and carried by said shaft, a brake adapted to co-operate With said braking surface, and means for holding said brake in inoperative position, said element being arranged to release said holding means at a predetermined point in said movement of the sound conveyer, substantially as described.

15. In a phonograph, the combination of a rotatable turntable, a shaft on Whichsaid turntable is mounted, a sound conveyer mounted for movement transversely of said Macnee Ha 'said movement of the sound conveyer, substantially as described.

16. ln a phonograph, the combination of a rotatable turntable, a shaft on which said turntable is mounted, a sound conveyer.

mounted for movement transversely of said turntable, feeding means for effecting such movement of the sound conveyer comprising an element carried by said conveyer, a governor for controlling and regulating the speed of rotation of said shaft, comprising a member rotatable with such shaft and having an annular braking surface, a pivfg oted brake adapted to co-operate with said braking surface and biased to operative psition, and a detent for holding said brake in inoperative position, said element being arranged to release said detent at a predetermined point in said movement of the sound conveyer, substantially as described.

17 .f In a phonograph, the combination of a cabinet, a support comprising a top plate normally occupying a substantially horizontal position in said cabinet, a turntable shaft rotatably mounted on said support and extending vertically through said top plate, a motor mounted on said support below the top plate and operably connected with said shaft, a sound conveyer mounted for movement transversely of said top plate, one end of said sound conveyer being disposed above said top plate, the sound conveyer extending rearwardly from said end above thetop plate, then downwardly and then forwardly below the top plate, and feeding means for effecting said movement of the sound conveyer comprising an element mounted on said support below the top plate and operatively connected with the motor and an element carried by the sound conveyer and normally operatively engaging said first element, said support being pivotally mounted in said cabinet on a substantially horizontal anis and said feeding elements being disengageable whereby the support may be swung upwardly in the cabinet about said axis so as to render accessible the parts carried thereby below said top plate, substantially as described.

This specification signed this 29th day of April, 1920.

WILLAM E. GIBBS.

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