US1221003A - Sound-reproducing machine. - Google Patents

Description

R. G. BROWN.

SOUND REPRODUCING MACHINE; APPLICATION FILED JAN.18, 1915.

Patented. Mar. 27, 1917;

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R. 6. BROWN.

SOUND REPRODUCING MACHINE. APPLICATION FILED JAN- IB. I915.

Patented Mar. 27, 1917.

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CINCINNATI, OHIO.

SOUND-REPRODUCING MACHINE.

Specification of Letters Patent.

Patented Mar. 2'7, 191?.

Application filed January 18, 1915. Serial No. 2,834.

To all whom it may concern:

Be it known that I, Ronnn'r G. BROWN, a citizen of the United States, and residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in Sound-Reproducing Machines, of whichthe following specification is a full disclosure.

This invention relates to mechanisms for automatically re-playing any given record on a phonograph and it more particularly attempts to reduce such mechanisms to a high state of mechanical simplicity; especially to an extent such that they may be em bodied in the form of an attachment easily applied to a conventional phonograph.

-The object of this invention is to provide a mechanism adapted first to be set in operation by being connected with the motor and then after a. predetermined time interval to in turn automatically withdraw from the same.

The primary object is to provide a mechanism that will very effectively enable a given record to be automatically replayed as many times as desired and then to automatically disconnect the machine from the source of power. I

Another object is to provide a unitary self-contained mechanism which can be easily applied to a conventional type of phonograph and which will render the same automatic to the extent of enabling itto replay a record'any predetermined number of times and then automatically discontinue the operationof the machine after normalizing its parts.

An object of the herein illustrated specific embodiment of this invention is to provide a mechanism that will normally be entirely free from the turn-table, but which by an appropriate electrical or mechanical latch will be throw-n into engagement with said turn-table so as to derive motion therefrom and to utilize this motion for resetting the tone-arm and finally for automatically again disconnecting from the turn-table.

Another object is to utilize a lever fulcrumed at two or more points and constructed to swing about its one fulcrum to effect a re-latching of the-trip-mechanism, and

then to utilize its other fulcrum in disconnecting the transmission mechanism.

A further object of this invention is to provide an attachment embodying an electrlcal'or mechanical trip effective at the conclusion of a record to throw a certain operating-mechanism into action, preferably by turn-table power, so as to lift the stylus and replace it at the beginningof the record, and to combine said mechanism with means for automatically effecting a disconnection from the'turn-table, and also with an adjusting' instrumentality capable of determining the number of such re-playing operations.

Other objects will be in part obvious from the annexed drawings and in part indicated in connection therewith by the following analysis of this invention.

This invention accordingly consists in the features of construction, combination of parts and in the unique relations of the members and in the relative proportioning and disposition thereof; all as more completely outlined herein.

To enable others skilled in the art so fully to comprehend the underlying features thereof that they may embody the same by the numerous modifications in structure and relation contemplated by this invention, drawings depicting a preferred form have been annexed as a part of this disclosure, and in such drawings, like characters of reference denote corresponding parts throughout all the iews, of which Figure 1 is a plan view diagrammatically illustrating a conventional sound-arm, record andturn-ta-ble with my invention as an attachment applied thereto. Fig. 2 is an enlarged plan of a mechanism embodying my improvement. Fig. 3 is a front elevation thereof. Fig. 4 is a left-end elevation with the casing in section. Fig. 5 is a plan, similar to Fig. 2, showing the transmission unit in its tripped motion-receiving position, and showing some of the parts broken away to more clearly show the details of the escapeinent device. Fig. 6 is a right end elevation, with the casing in section. Fig. 7 is a front elevation, with the casing in section to more fully show the brake mechanism. Fig; 8 is a detailed elevation of the counting wheel showing its beveled ratchet-releasing nose. Fig. 9 is a plan of the soundconveying arm and of a modified construction of stop-mechanism therefor.

Continuing by way of a more detailed analysis, it may be noted that this invention comprehends a trip or contact system which may operate either electrically or mechanically, but which preferably operates through a contact element secured directly to each record, thereby avoiding the necessity of adjusting the mechanism whenever the records are changed.

Preferably, the lifting mechanism is normally disconnected from the source of power so as to avoid wear of constantly running wheels, and, to that end, the attachment is provided with a wheel which is normally out of action but which can be shifted to engage the periphery of the turn-table and act to transmit power to the mechanism during theworking periods.

Referring to the drawings, 1 indicates an element which is driven ultimately by the conventional phonograph motor and in this embodiment it is convenient to utilize the turn-table itself as the source of motion and throw a frictional clutch to connect and disconnect the stylus-lifting mechanism therewith. A great advantage of this lies in the facility with which this instrumentcan be attached by any ordinary user to any conventional phonograph. Such phonograph will also conveniently embody a suitable tone-arm 4 adapted to swing over the record 5 and carrying a sound-box 3 having the usual stylus 2; the whole being so arranged that the stylus can remain in the groove or be uplifted therefrom, this being here accomplished by having the tone-arm 4* adapted to swing about a pivot 4' providing a hori zontal axis as well as the ordinary vertical axis 1. This invention embodies means which will lift the tone-arm 4:" about its horizontal axis in combination with means for swinging it also aboutits vertical axis-4 back to the initial or starting point.

This invention contemplates a general mechanism adapted to enter into combination with the above-named conventional elements to function as above stated, and specifically it embraces all or many coordinated subcombinations including (A) a sound-box lifter, which at appropriate intervals lifts and lowers the stylus; (B) a tone-arm shifter which carries the stylus from the end to the beginning of the record; (C) a motion transmission which furnishes the necessary gears and shifts resulting in an actuation of the lifter and shifter; (D) a power-connector which isin the nature of a clutch-mechanism and which at appropriate intervals connects the transmission with 'the primary source of power, which may preferably be the turntableitself but which may be any motordriven element; (E) a trip-system which is effective automatically to throw the powerconnector into action at the appropriate station in the record; (F) a. control-lever which automatically effects a disconnection of the power-connector and normalizes the relation of the trip to the mechanism; (Gr) an adjuster which predetermines the number of times the mechanism operates to replay the record; and (H) a brake which is conveniently caused to operate to conclude the performance.

These will be described in order.

The sound-box lifter, as shown by Fig. 1, consists of a davit 11 which is formed of tubing bent L-shape'd and having its lower end journaled in a bearing 9 formed by a boss projecting from the base-plate 15. This base-plate is mounted adjacent the base of the tone-arm 4 so that the horizontal upper end of the davit may extend toward the tone-arm and terminate over the same in a relation which will presently be more fully explained. A tension element such as the cord 12 (containing leading-in and out wires for the electric current) is anchored to the extremity of the davit 11 and also to an appropriate part of the sound-box 3, such as the upper side thereof, and the extremity of the davit 11 is sufficiently higher than the axis 4: so that a pull on the cord 12 will lift the arm 4 about its horizontal axis, thus elevating thestylus. This davit has an arm 16 whereby it may be oscillated by the motion transmitting mechanism.

The tone-arm shifter, is for the purpose of causing the tone-arm to swing back to its starting position and, to avoid scratching the recor by the stylus, this movement should not begin until the stylus has been raised clear of the record. This invention contemplates a means that will come effectively into been raised and in this particular embodiment great simplicity has been attained by intimately incorporating this means with the stylus lifter, and this has been done by a peculiar relation between the axes 11 and 4 of the davit and tone-arm, respectively, and the arc of swing of the point 11. That is to say, in its normal or stylus-lowering position, the davit 11 is in such a position that the straight line from the point 11" to the point 12 is in substantially dead center relation with the axis 4, but when the davit 11 swings into position shown by Fig. 1, this straight line becomes in off-set relation with the axis 4. with the result that a pull on the cord 12 not only tends to lift the stylus but also imposes a turning movement on the tone-arm and urges it gently yet sufficiently toward its initial position.

The motion-transmission is the mechanism or train of elements that results in the actuating of the stylus replacing means by power action only after the stylus has derived from some motor-driven part, such as the turn-table 1; andwhich preferably embodies reduction gears so that the ultimate motion will be slow and deliberate and the styluswill be handled gently and without jerks and save the record from scratches. In this embodiment, this transmission is in part stationary-and in part is bodily shift-- The able for power-connecting purposes.

comprises a shaft 19 pivoted stationary part at its lower end in the base of the main frame or casting 15 and at its upper end to the cover-plate 20 which is also fixed to said frame by means of the posts 21 and 22. The upper end of this shaft 19 is provided with an eccentric pin 19 which is connected with the end of the arm 16 by means of the link l7 whereby the davit 11 may be rocked 29 may rotate slowly. This shaft 19 derives motion from the clutch element or wheel 29 through a train of reduction the shafts of which are all pivoted to the side plates 23 of .a rocking-frame. Both gear-sets 2125 and 26-27 have a. pronounced reduction efiect with the consequence that the crank-pin 19 is but very slowly turned, although the friction wheel several times during each revolution of the turn-table.

he power-connector is an arrangement in the nature of a clutch and it enables'the turn-table to operate during the normal playing of a record without any concomitant operation of the return mechanism. Preferably this means is located so as to disconnect as many parts as possible from the source of motion, to avoid needless wear or noise, and preferably the wheel 29 is therefore entirely withdrawn from the turntable. This is conveniently done by pivoting the plates 23 of the sub-frame tothe shaft 19 so that the shaft 28 of the friction wheel will be carried by the remote free-swinging portion of the subframe.

The position of this sub-frame is in turn determined by the following arrangement The lever control for the swinging powerconnector functions first to unlatoh and resiliently swing the sub-frame to bring the friction-wheel 29 into engagement with the periphery of the turn-table and to mainat 30 to the plate 23 of the swinging subframe and which, in the position shown by Fig. 2 can (when unlatched) be turned about the stationary fulcrum point 18 formed by a flat edge of the cam plate 18.

gears 24, 25, 26, and 27,

lever-system compris-- of the parts ,That-is to say,

entered a right-angle notch 32 in the camplate 18 so that it mayrest against the edge 18 thereof which constitutes a stationary fulcrum enabling the lever 31 at the point 30 to pry the plate 23 around the axis 19. N ormallv the lever is held against this movement by means of a pin 33 whichengages with a notch 34 of a latch 35 pivoted at 36 to a frame-element and spring-pressed into of the spring 38 on the end of the arm 37. The rotation of the cam 18 begins the moment the wheel 29 startsto actuate the davit 11 and the rotation is anticlockwise and immediately brings the raised portion 18 against the edge of the lever 31 so as to force its end away from the shaft 19 and swing the lever about the pivot 30 (the .sub-frame remaining still) until the latch pin 33 has passed the notch 34 in the latch 35. This condition remains unchanged while the periphery of the; cam-plate 18 rides against the-edge of the lever 31 and until the point 18 passes the end of the lever 31,

whereupon the fulcrum provided by the cam 18 will have disappeared and immediately its place is taken by the pin 33 so that the spring 38 now tends to turn the lever 31 around the pin 33 as a fulcrum and this tends to throw the pivotal connection 30 in the opposite direction and, of course, withdraws the sub-frame and the friction Wheel 29 so that all motion ceases in the entire attachment. The sub-frame continues to withdraw until the end of the lever abuts the part 18 again, when the position of Fig. 2 is attained. This action has resulted in an elevation of the stylus, a swinging of the tone-arm, and'a replacement of the stylus. Now, the stylus is in a position to replay the record and will continue to do sountil a trip system comes into effect to release the latch 35, and cause the attachment to refunction in restoring the stylus to its initial position.

The trip system contemplates a. means for causing the latch 35 to swing aside and release the pin 33 and this movement of the latch 35 may be effected either mechanically or electrically, the latter possessing the advantage of making it unnecessary to reset the trip adjustment when a new record disk is played in the machine. In this embodiment, a thin brass washer 14 is affixed to each particular record at a proper point so that it will close the circuit between the twospring fingers 13 when the stylus 3 reaches the end of the sound groove. The current passes through the conductor which leads upwardly as indicated by 12 and is secured at 11 to the hollow arm of the davit 11 and it passes down this davit through the hollow post 9 (Fig. 6) and thence through the opening 9 and the end 12 is fast to the one binding post an of the electro-magnets 39. The other binding post a the end of the lever 31 has wire '10, be grounded to the arm 15 to complete the circuit. Thus, whenever the contact 14 functions, the.electro-magnets will retract the latch 35 and the resetting of the stylus will take place.

The adjuster operates to determine the number of times the record is to be replayed; this number ranging from one to eight, or more, according to the construction. So far as has been explained, the above described apparatus would perform repeatedly an indefinite number of times, but this invention proposes a very simple arrangement for limiting the operation of the instrument. That is to say, a brake is caused automatically to stop the turn-table; preferably just after the stylus has been uplifted and the tone arm-returned. This brake consists of a rod 40 journaled to slide in the posts 41 and 22' and normally urged in the direction of the turn-table by the spring 46 so that, if otherwise free, it will advance to project its end 42 (carrying a friction surface) through the opening 21 in a post 21 and directly against the periphery of the turn-table, thereby stopping it. This move-' ment is restrained, however, by means of a controller 48 having a number of teeth 44 which can cooperate with the periphery 45 of a spiral track 45. This frame 43 can be adjusted, with the brake-rod 40, by grasping the nob 43 and it is provided with a pointer 50 cooperating with indication marks 51. Now, during each revolution of the track 45, the end 47 will receive and pass one tooth, and if there be three teeth to pass then the instrument will operate three times before the brake is released by the sharp nose 47 which rides under and lifts up the smooth portion 48. The releasing point depends upon the location of the end 47 of the track and this will preferably be such that the davit will be moved to its uplift position.

For the purpose of limiting the swing of the sound conveying arm, I provide a stop member 52 journaled on an upright stud 53, which also serves as a securing member for the shelf 20. L-shaped head 54, having a arm, and it may be turned to bring either into the path of movement of the sound conveying arm, alternately servingv for relatively different standard sizes of records. While this stop is only adapted for use with records of two different diameters it may be interchanged with a stop member having stop arms of different lengths to accommodate records of any size. In Fig. 9, I have shown a modified form of stop provided with a spring retaining clip engaging with a series of notches in the supporting upright. A rotation of the stop arm in a clockwise direction will engage the spring clip in either of the notches, while the shape of the clip and notches will preshort and long This stop.member has anon the upright abutment.

Without further analysis, the foregoing will so fully reveal the gist of this invention that others can by applying current knowlf edge readily adapt it for various applica tions without omitting certain features that, from the standpoint of the prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention, and therefore such adaptations should and are intended to be comprehended within the meaning and range of equivalency of the following claims.

Having thus revealed this invention, I claim as new and desire to secure the following combinations of steps and elements, or equivalents thereof, by Letters Patent of the United States 1. A replaying phonograph combining a stylus-supporting sound-box; an elevator therefor; a laterally-shiftable tone-arm carrying said sound-box; a slow-motion transmission involving reduction-gearing adapted to derive motion from the motor of the phonograph; and positive means actuated by said transmission for slowly operating said elevator to raise and then lower said sound box, and to cause said elevator meanwhile to restore said tone-arm to its initial position.

2. An instrumentality aflixable to render a phonograph automatically replayable and combining a frame attachable near the turntable; a wheel adapted to be driven by the turn-table; means carried by said frame for raising and lowering the stylus of the phonograph; latch-mechanism adapted to be tripped at a predetermined station of the stylus to utilize said wheel in transmitting power to said means raise and lower said stylus; and means for automatically normalizing said latch mechanism and concluding the operative relation between said turn-table, said wheel and said means.

' 3. A tone-arm returner combining a horizontally extending tone-arm mounted to swin about a vertical axis; a pull-member attac ed thereto at a point remote from said axis; an actuating element having a connection with said pull-member, and normally positioned to aline said axis, point and connection; and means for automatically shiftil'lfig the position of said actuating-element to 0 -set said connection and create a turningmoment for said tone-arm.

4. A combined stylus lifter and tone-arm shifter comprising a tone-arm swingable about a vertical axis; a stylus-support pivoted about a horizontalaxis to the free end of the tone-arm; an elongated element attached to said stylus support; an actuating member having a connectionwith said elongated element and adapted to move it lengthto enable it slowly to.-

wise and being normally positioned to aline said vertical axis with the two points of attachment of said elongated element to per mit it initially to uplift said stylus-support without swinging said tone-arm and means for offsetting said connection with relation to said vertical axis to create a turning moment for swinging said tonearm.

5. A stylus-lifter combining a sound-box movable to raise its stylus; an insulated conductor attached to said sound-box to raise its stylus when pulled; a contact electrically connected with said conductor and adapted to close a circuit with a contact lnounted on a record; mechanism for pulling said conductor; and magnetic means adapted to be energized through said conductor to render said mechanism operative.

6. A re-playing phonograph combining a stylus-supporting sound-box; an elevator therefor; a laterally shiftable tone-arm carrying said sound-box; a slow motion transmission involving reduction-gearing; latchoperated means for establishing a propelling relation between said transmission and a motor driven part of the phonograph and positive means actuated by said transmission, for slowly operating said elevator to ralse and then lower said sound-box, and for meanwhile restoring said tone-arm to its initial position.

7. An instrumentality afiixable to render a phonograph automatically replayable and combining a frame attachable near the turn table; a wheel shiftable into engagement with the turn-table; means actuated by said wheel for raising and lowering the stylus'of the phonograph; latch-mechanism adapted to be tripped at a predetermined station of the stylus to permit shifting of said wheel to render means operative slowly to raise and lower said stylus; means for automatically' normalizing said latch mechanism and restoring said wheel to its inoperative position.

8. A tone-arm returner combining a horizontally extending tone-arm mounted to swing about a vertical axis; a pull-member attached thereto at a point remote from said axis; an actuating element pivoted at one side of said vertical axis and provided with an extension toward said tone-arm having a connection with said pull-member normally so positioned as to aline said axis, pointandconnection; and means for automatically turning said actuating-element to off-set said connection and create a turning. moment for said tone-arm.

9. A combined stylus-lifter and to ne-arm shifter comprising a tone-arm 'sw'ingable about a vertical axis; a stylus "support pivoted about a horizontal axlsto the free end of the tone-arm; an elongated element attached to said stylus-support; an actuating member providing an extenslon havlng a -con'nection with said elongated element to 1 nection with relation to said vertical axis to create a turning-momentfor swinging said tone-arm.

10. A replaying phonograph combining a stylus-supporting sound-box; an elevator therefor; a laterally-shiftable tone-arm cars rying said sound-box; a slow-motion transmission involving reduction-gearing adapted to derive motion from the turn-table of the phonograph; a device adapted to be tripped to cause an element of said transmission to be moved into power-receiving position, and positive means actuated by said transmission for slowly operating said elevator to raise and then lower said soundbox, and for meanwhile restoring said tonearm to its initial position.

11. An instrumentality aflixable to render a phonograph automatically replayable and combining a frame attachable near the turntable; a wheel shiftable to be driven by the turn-table; wheel-actuated means for raising and lowering the stylus of the phonograph; latch-mechanism adapted to be tripped at a predetermined station of the stylus to permit said wheel to shift into engagement with said turn-table so as to be driven thereby and thereupon cause said means slowly to raise and lower said stylus; and means for automatically shifting said wheel back into its inoperative position.

12. A tone-arm returner combining a horizontally extending tone-arm mounted to swing about a vertical axis; a pull member attached thereto at a point remote from said axis; an actuating-element pivoted near said axis at one side thereof and having an extension terminating over said tone-arm, and at its end, having a connection with said pull-member normally alining said axis, point and connection; and means for slowly and automatically oscillating 'said actuating element to periodically off-set said connection and create a turning moment causing said arm to return to its initial position.

13. A combined stylus-lifter and tonearm shifter comprising a tone-arm swingable about a vertical axis; a stylus support pivoted about a horizontal axis to the free end of the'tone-arm; an elongated element attached to said stylus-support; a davit piv- Qted at one side of said vertical pivot and having an extension over said tone-arm having at its extremity a connection with said elongated element and adapted to move 1t sound-box into engagement lengthwise, said extremity being normally positioned to aline the axis of the tone-arm when at the end of its swing with the two points of attachment of said elongated-element to permit it initially to uplift said stylus-support without swinging said tonearm; and means for shifting the position of said extremity to oft-set said connection with relation to said vertical axis to create a turning-moment for swinging said tonecombining a soundits stylus; an insulated conductor attached to said sound-box to raise its stylus when pulled; a contact electrically connected with said conductor and adapted to close a circuit with a contact mounted .onra record; mechanism for pulling said conductor; and magnetio means adapted tobe energized through said conductor to render said mechanism operative b mechanically connecting it to be propelled by the turn-table. t

15. A sound reproducmg instrument comprising a rotating turn-table, a llOI'lzontally-swinging sound-conveying arm, a vertically-swingingsound-box carried thereby; an oscillatory arm operatively connected to the sound-box, and in one of its swinging motions adapted to elevate the sound-box and to shift said sound-box and its supporting sound-conveying arm; a drive-unit movable to connect with and receive motion from the turn-table for operating the oscillatory-arm, and an electric control for the drive-unit.

16. A sound-reproducing instrument comprising a rotating turn-table; a horlzontally-swinging sound-conveying arm; a verarm.

14. A stylus-lifter box movable to raise tieally-swinging sound-box carried thereby;

an oscillatory arm operatively connectedto the sound-box adapted to elevate and shift said sound-boxa drive-unit for the oscillatory-arm operated by the turn-table; means for latching said unit in a nonfunctioning position; and an electric device controlled by the translation of the soundbox'for tripping said means to operate the drive unit;

17. A device of the class described comprising a propelled record-supporting memher; an arm provided with a stylus-carrying swingingly supported transversely movable under the influence of the stylus and record-groove engagement; transmission devices fulcrumed to swing with said record supporting member to receive motion therefrom;

an oscillating member operated by said transmission devices and moving in an arc eccentric to the axis of said arm, and a connector-element uniting said arm and oscillating member for positioning said arm and its stylus at a starting station after a predetermined traverse across a record.

18. A device of the class described comprising a propelled record-supportingmemher; an arm provided with a stylus-carrying sound-box swingingly supported transversely movable under the influence of the stylus and record-groove engagement; transmission devices fulcrumed to swing into engagement with said record supporting member to receive motion therefrom; an oscillating-member operated by said transmission-devices and in an arc eccentric to the axis of said arm; a connector-element uniting said arm and oscillating-member for positioning said arm and its stylus at a starting-station after a predetermined traverse across a record; and electrically controlled tripping devices for predeterminately rendering said transmission devices operative.

19. A device of the class described comprising a propelled record-supporting memher; a stylus-supporting member pivoted to swing across the face of a record upon said record-supporting member; and an inextensible cord having one end connecting with said stylus-supporting member and its other end anchored remotely therefrom to extend in a line oit-set to the axis of said pivoted member, whereby a pulling strain upon said cord will move said member to a starting station.

20. In a device of the class described, a disk-record rotating member, an arm movable transversely of the record havin a sound-box movable to and from the record surface; mechanism adapted to return the arm to initial position after a sound reproduction, including transmission devices movable into and out of engagement with said rotating member; an electrical control for said means determining the point in sound reproduction at which said mechanism becomes operative, and means determining the limit of the return movement of the arm.

21. A device of the character described comprising a rotating turn-table; a horizontally-swinging sound-conveying arm; a

sound-box including a stylus-holder swiveling on said arm to move the stylus-holder toward and from the turn-table record-supporting surface; a swiveled member; means connecting the sound-box to a part of said member in off-set relation to the axis of said arm so as to raise the stylus-holder and also swing the arm to its starting location and then to. restore the sound-box'to its active position; transmission devices for turning said member; and controlling means for said transmission devices.

22. A device of the class described comprising a rotative record-supporting member; a sound-conveying arm moving" across the face of said member; a stylus-carrying sound-box swiveled upon said arm; an inextensible pull-memberhaving one end connecting with said sound-box and extending toward the axis of said arm, whereby a drawing motion of said member will swivel said sound-box and move said arm to a starting station, and means for operating said pull-member.

23. A device of the class described comprising a rotative record-supporting mem; her; a sound-conveying arm supported to swing across the face of said record-supporting member and including a stylus-carrying soundbox; an operating means; a pullmember having one end connected to the free end of said arm and its opposite end attached to said operating means at one side of the axis of said arm; and a slow motion mechanism for operating said means, whereby a drawing-motion of said pullmember will impart a swinging motion to said arm to move the same to a starting station.

24.. A device of the class described comprising a propelled record-supporting member; a stylus-supporting tone-arm fulcrumed to swing over the face of a record on said supporting member; a member extending approximately coincident with said arm with its forward end connecting with said arm, whereby a pulling strain upon said member will swing said arm to a starting point; and a slow motion means for periodically pulling said member with a slow deliberate motion.

25. A device of the class described comprising a swiveled tone-arm; an inextensible pull-member extended approximately radially with said arm having one end connected therewith and adapted to swing simultaneously with said arm; and a rocking member pivoted to the opposite end of said member for shifting the axis of said pullmember relatively to the axis of said arm, whereby said pull-member is adapted to swing said arm.

26. A device of the class described comprising a swiveled toneearm; a sound-box swiveled upon said arm; a swiveled member arranged to swing coordinately with said arm; a connection enabling said member to swing said tone-arm; and means for varying the relations between the axis of said arm and the operating end of said member, and reciprocate said member for swinging said box and arm upon their respective axes in one stroke and said sound-box independently in an alternate stroke.

A dex ice of the class described comlimits for alternating the operation of said arm, member and said box.

28. A device of the class described comprising a rotating record-supporting table; a swiveled tone-arm adapted to swing across said table; a sound-box swiveled upon said arm to swing to and from the table; a link member connecting with said sound-box and adapted to swing in a horizontal plane with said arm; devices connecting with said link member to reciprocate the same for swinging said sound-box and arm coordinately and independently to position said parts to a repeat position; and transmission devices predeterminately operative for functioning said first named devices.

29. A device of the class described comprising a rotating record-supporting table; a swiveled tone-arm adapted to swing across said table; a sound-box swiveled upon said arm to swing toward and from said table; a member connecting with said soundbox adapted to swing in a horizontal plane with said arm; crank devices connecting with said member for reciprocating the same to raise and lower the sound-box and swing the same to'a starting point; means for operating saidv crank devices; and tripping means for controlling said crank operating means.

In Witness whereof, I hereunto subscribe my name, as attested by the two subscribing witnesses.

ROBERT G. BROWN. Witnesses:

EMMA SPENER, L. A. BECK. I

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