US1320732A - brown and j - Google Patents

Description

. R. 6. BROWN AND J. E. STRIE TELMEIER.

SHEET METAL REPLAYER. APPLICATION FILED SEPT. 15. 19I6.

Patented Nov.- 4, 1919.

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H 6. BROWN AND J. E. STRiETELMEJER.

SHEET METALREPLAYER.

APPLICATION FILED SEPT 15, E916.

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ing the attachment. Thus, it is first pressed against the edge of the turntable, the screws are inserted in the far ends of the slots, and, before the are tightened down finally, the

device is time!) pulled as far away from the turn-table as the length of the slots will permit; and then when the screws are tightened down, the device will be 'lccurately located. The base also provides an ear 9' which is H? bent inward and has a hole registering with a hole in the part of said base forming a cover, and said holes are adapted to re eeive a hollow tube or post 9 which supports the davit 11. The tongue or extension E 15 has an upstanding ear P having an arc-slot 0 to receive the clamping screw of a stop element M used to determine the initial starting point of the tone-arm. A part termedthe guide member shown in Fig. 15 is secured to the side of the base-frame by screws 20 and has two ears 20 extending therefrom which serve to position and act as a bearing for a shaft which is the axis of swing of the sub-frame used for/shifting the power off and on. An upward extension 21 of this uide memberand the opening 22 in the end of the base-frame act as guides and bearings for the shiftable brake element shown in Fig. 12.

In general, this invention contemplates a low,'compact self-contained device adapted ..to enterinto combination with the conventional elements of a standard phonograph to function as above-named, and specifically it embraces all or many coordinated sub-com binations including (A) a soundbox lifter, which at appropriate intervals 'lifts and lowers the stylus; (B) a tone-arm shifter .which carries the stylus from the end to the 40 beginning of the record; (C) a motiontransmission which furnishes the necessary gears and shifts resulting in an actuation of the lifter and shifter; (D) a power connector which is in the nature of a clutch-mecha- 15 nism and which at appropriate intervals connects the transmission with the primary source of power, which may preferably be the turn-table itself but which may be any easily accessible motor-driven element; (E) mi a trip-system which is effective automatically to throw the power connector into action at the appropriate station in the record; (F) a control-lever which automatically effects a disconnection of the power-connectorand normalizes the relation of the trip to the mechanism; (G) an adjuster which predetermines the number of times the mechanism opefates to. replay the record; and (H) a brake which is conveniently caused to operate to conclude the performance.

The sound-box lifter and tone-arm shifter in this embodiment is compacted and condensed into a single sub-mechanism embodying a tone-arm 4 to which is pivotally mounted a reproducer carrying a stylus 3; the whole being to all intents and purposes a single unit providing fora horizontal swing at the vertical central axis l and also a vertical about the horizontal axis 4. This provides all means necessary fora normal playing of the stylus as well as lifting, returning and lowering. it. It may be explained that when the stylus-holder 4 is lifted to raise the stylus, it must not begin the swing back until the stylus has entirely cle'aredthe record, otherwise it would be scratched. The lifting and shifting means embodies a davit' 11 which has its lower end journaled in a hollow post 9 projecting from the base-frame 15 and the upper ent of this davit is in the form of an arm 11 having an eye 11 at its extremity to which is attached the cord 12. This arm extends through a hole in the upper end of the post i 8.3 and a screw-11 serves to lock it in any desired position. This hole is sutiiciently high to locate the arm 11 above the tone-arm so that a pull on the cord 12 will lift the tonearm about its horizontal axis 4' thus clevating the stylus. V I

This invention contemplates a means that will come effectively into action only after the stylus has been raised and in this particular embodiment great simplicity has been attained by intimately incorporating this means with the stylus-liften 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 ii is in a position, such as shown by Fig. l., that the straight line from the point 11, to the point 12 is not sufficiently off a dead center relation with the axis 4" to cause the tonearm to swing, but when the davit ll swings into its uplifting position, this straight'line' becomes in a pronounced off-set. relation with the axis 4" with the result that a pull on the 0rd 12 not only tends to lift the stylus but also imposesa sufficient turning movement of the tonearm to urge it gently, yet sutthiicntly, toward its initial position. It will be observed that the relation of the point 11 to the two axes 4 and 11 is such that when the arm lli rotatcs in one direction about its own axis, the tone-a m 4 will swing in the opposite direction about its own axis, and this peculiar relation of parts carries 12a the advantage that a single means is enabled to perform the two-fold function of lifting and shifting the stylus in a manner so graduated as not to scratch the recordv The motion transmission is 1 or tram of elements that rcsu tion of the Htylus icplacing nu derived from some motor i'lrivei pa as the turn-table l; and which pro embodies reduction gears so that the bodily shiftable' for power connecting purposes. The stationary part comprises a shaft 19 ivoted at its lower end in the cars of gu1de member.M.' 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 17 whereby.

"the davit 11 may be rocked slowly. Thls shaft 19 derives motion from the clutch element or wheel 29 through a train of reduction gears 24, 25, 26 and 27, the shafts of which are all pivoted to the side plates 23' i of a'rocking-frame. This rocking-frame is in the nature of a sub-frame composedof sheet'metal, stampings. Thus, the upper plate, as'shown best by Fig. 9, has 1: a, and '71 which receive tongues provided by the upstanding portions f and g of the lower plate. Suitab e posts bmdthese plates to' gather. Both gear-sets 24-25,,26-27 havea pronounced reduction efl'ectwith the consequence-that the crank in "19 is but very slowly turned, although .t e friction wheel 29 may rotate several times duringcach revolution of the turn-table. The power connector is an'arrangement turn-table w. operate-"during the normal playing of airecord witboutanyconcpmitant ,0, ration of the return mechanism. Prefers ly this means is.-located soar! to disconnect as many parts as. possible from the source of motion, to avoid needless wear or noise, and efcrably the wheel 29 18 therefore entire y withdrawn from the turntable. This is conveniently done by pivoting the plates 23j'of the sub-frame'to the shaft .19 so that the shaft 28 of the friction wheel will be carried by'the remote free-' swinging ptmaion of the sub-frame. The

' connector'functioo first to unlatch and resiliently swing the sub-frame to bring the friction wheel 29 into engagement with th riphery of the turn-table and to maintain t is engagement until the tone-arm has been shifted to its initial int, and in the meanwhile to effect a relate ing of the control-lever, and then through the same lever to withdraw the friction-wheel and permit the record to be played without interference. This triple action is very easily effected by the multiplefulcrum lever-system comprising a sheetmetal lever 31 which is permanently pivoted at 36 to the plate 23 of the swinging suhframe and w ich (in the position of the parts shown by Fig. 3) can through the pull of the spring 38 (when nnlatched) be turned about the stationary fulcrum point I9 ;by

acting through the flat edge'18 of the camplate 18. When this movement takes place underthese circumstances, thelever' 31 and the sub-frame 23 act as a unit and s'wingas a unit about the pivot 19, since the lever 31 does not turn on the pivot 30 which attaches "in to'the sub-frame. That is to say, the

hook-like end of the lever 31 has entered a right-angle notch '32 in the cam-plate 18 so that it mayrest against the edge 18 thereof fulciplin enablin the lever 31st the pol which,:in a sense, constitutes a stationary. t 9.

30 to pry the p ate 23 around the axis Normally, the spring 38 is precluded from swinging the lever 31 by means. of a pin or detent 33 which enigages with the notch 34 of a latch 35 pivote at 36 to a' frame-element -and spring-pressed into its obstructin' posi- 4 the davit I11 and this rotation is anti-clockwise and moves the cam 18 so as to brin the raised-portion 18 underneath. the end of the lever 31 so asto force said end away from theshaft 19 into the position shown by F the nature of a clutch and it enables sla 15o the sub-frame'rema'ining-stillyuntll the 1g. 5 and swing the lever about the pivot 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. The cam has now ceased to 0 pose the spring which't he'reu n imme i-. ately moves the pin 33 t e stationary fulcrum provided by t e notch 34- of the latch 35, so that the stpxring now tends to turn the lever 81 around ep ln 33 as a fulcrum 30in the opposite direction and, of course,

J riphe'ry. I of the oam-plate 18-rides against t e end of and this acts to throw the pivotal connection causesthe sub-frame toswing back about the pivot 19 into the position shown by F g 3, thereby withdrawing the friction wheel 29 so that all motion ceases in the entime attachment. The sub-frame continues tofwithdraw untilthe end'of the'lever abuts the part .18 again, when the position of Fig. 8' iiattained. TlllS action has resulted iii an elevation of the stylus, a'swin 'ng of the tone-arm, and a replacement 0 the stylus. Now the stylus is in a position to replay the 'rd and will continue to do so until a trip-system comes into effect to release the,

latch'85 and cause the attachment'to refunction in restoring the stylusto its initial position. y

The trip system is entirely mechanical'in.

bear up against the arm 37 extending from the latch 35 so as to swing the latch to release the pin 33, which is stamped up from the lever 31. This arm H is frictlonally clutched to a trip lever J which is extended to locate its free end in a position to be 'abutted and moved by the sound-box and consequentl causethe arm to operate the latch. As s own by Fig. 6, a spring-washer L is seatedin a circumferential slot near the end of the post I and compresses the arm J between the friction dish IV and shoulder arm J by the hand and 'et to transmit without slipping enough pressure to throw the latch. K represents a shoulder integral with the pin I for fixing it on the frame. The

arm H is rigidly secured to the pin I be-' tween the riveted or turned-over portlonof said pin and shoulder Y. In this way the latch may be caused to operate at any predetermined limiting of the stroke of thetone-arm 4, with the result that. the tone Y arm is uplifted and permitted to swing in an anti-clockwise direction This movement is-in turn limited by a stop consisting of a. part- M which can be clam ed in anyangular adjustment to the upstan ing part P by the. thumb screw 0. a V

The adjuster operates to determine-the number of times the record will automatically replay, and it comprises an escapementlike device. which, after a predetermined number of countings, is released to set a, brake against the turn-table. In this embodiment, the parts are composed mainly of sheet-metal and the whole sub-combination is subject to displacement as a unit. Thus, a brake proper consists of a flatstrip T. with both ends bent at about right angles slidahly supported in the opening 2:! of the frame and guided by the. bent up portion 21 of the guide member N which runs in a cutout part of the rear downward extension of-the brake.- and having its forward end whcel one notch for each stylus lifting cycle.

'lhc F:\i('ll(l'--\\'lll0l is also provided with a release in thc'naturc of a cut-away portion or slot ll. pin 5 normally bears against the wriphcry ol' the rzuclict-whedl and prevents the spring 46 from bodily shifting this edge readil v adapt 1t sub mechlmis'minto its braking position; but when this slot R coincides with the pin S, a release is effected and the brake -T acts effectively. v

Without further analysis, the foregoing will so fully reveal the gist of this invention that-others can by applying current knowlor various applications without omitting certain features that, from the standpoint of the prior artgf 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 followingclaims.

It will be seen. therefore,- that the mechanism will relxratedl-y go through its cycle .of replaymg a record unless the brake functions; but the brake cannot-be throwli in until theratchet-wheel has been moved (either manually or by the reciprocating Ii 45) until the slot R coincides with the pin The lip 45 can move the ratchet-wheel'only byperiodically acting against the shoulders successively presented by theratchet-teeth 6.

If the blank-region ofthe ratehet-wheelbe 45. and it.will engage'theshoulder of the single tooth remaining and advance the ratchet-wheel until the pin S registers with the slot R, as shown by Fig. 3,";lnd permits the brake to set and stop the phonogmph. If' the mtchet-whcel be set so. that six shoulders can be acted upon by the lip45, the machine will repeat six times. It is noted that eight shoulders are provided for i one of them being the edgeot the slot R), so..that eiglit replayings can behad if desired. 1 v c Q,

Having. thus revealed this invention, we claim as new and desire to secure the following comhinations of steps and'elements, or equivalents thereof by Letters Patent of the; United States:

, 1. A unitary self-contained attachment for a conventional phonograph combining means for raising, shifting and lowering the stylus to its starting station; mcchanism'driven by a motor-driven part of the phonograph for actuating said means repeatedly to auton'iatically replay theselcction; a mechanical trip actuated in consequence of (he movementof the stylus; a hand-adjustable ratchet wheel; means coi'iperatin therewith for causing said mechanism to iuuction only the predetermined mnnber of times, said means comprising a reciprocating dctent,

2. A phonograph re-player combining an automatic returning meehanism; a part reciproeated thereby; a braiw-elemeut normally urged into its arresting position; means adapted to restrain said brake and a. rotatable segment having teeth intermittently t'ed bysaid reriproeating part and constructed to be released when it aLLains a predetermined-position to permit the operation of said brake.

3. A rr-phrvei" ('ombining a bodily-shiftabie element: a notched disk pivoted thereto; a spring tending to shift. said element; a

part abutting said disk to restrain its displacement; and reeiproeating means for 15 turning said disk ste-p-lrv-step into a position free from said part.

In witness whereof we hereunto subscribe. our names. as attested by the two subscribing witnesses.

ROBERT G. BR()\VN. 'JOHX I). STRIE' ELMEIER.

Witnesses Fmmzxrr. E. Moons, Era K. ART?

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