US1230509A - Gramophone and the like. - Google Patents

Description

N. PEMBERTWQ Iy -BILLINGE:

GRAMOPHONE AND THE LIKE.

V PPLICATIDN FILED JAN-V4, l917- V PatentedJ11ne19,1917. j r

' UNITED STATES PATENT oFFIcE.

YNOEIJ PEHBEBTON-BILLING, OF COUNTY OF HEItTFORD, ENGLAND.

To all who're it concern: ously Be it known t at I, NOEL PEMBERTON- BILLING, a sub'ect of the King of England, residin in; ertfordshire, England, have inven certain new and useful Improvements in Gramophones and the like, of

which the following is a specification.

This invention relates to improvements in gramophone's or the like,

It ,is often desirable that a gramophone shall caplable, when occasion'requires, of repeatlng t e reproduction of the whole or :dpart-of la record without necessitating reustment of the reproducer 'by the operator, or sto age of the motion of the record. The 0 ]ect of the present invention one id e.

is to provide a simple repeating mechanism by w ich such repetition may be efl'ected,

preferably automatically. I According to this invention there are provided two reproducer-s to be used alternately,

' which are so linked together that as the operative reproducer of the pair moves across the record the idle one is carried back over the record to the starting point, combined with automatic or other means to render the idle re reducer operativeand the operative Thus when the 1 one reproducer has completed the reproduction of the record the other has been carried back to the starting oint and when rendered operative immediately recommences the reproduction.

When fiat. records are employed on the gramophone, the two repro ucers may be rigidly connected together; thus they may be linked together by a sound-tube wlnch they have in common. In one construction this sound-tube may be mounted to slide endwise through a support by which it is connected to the horn, by which sliding mounting the movement of the reproducers across the record is permitted. In order to enable the apparatus to suit various records, the reproducer-s should be adjustable as to their distance apart, to

' which end the sound-tube may be made tele- 500 ic. 11 order to render one of the reproducers operative and the other idle, they may both be mounted on an angularly movable su port, angular movement of WhlOh raises t e record-engaging stylus "of the operative re: 'p oducer from the record and simultane- Specification of Letters Patent.

permits the soun GRAMQPHONE AND THE LIKE.

Patented J unef19, 1917.

Application filed January 4, 1911. Serial No. 140,639;

lowers the stylus of the idle reproducer into contact with the record and means (preferably automatic) may be pro- (led to move the said member angularly when the reproducers reach the end of their travel in one direction orthe other across the record. V

In the accompanying drawings- Figure 1 is a plan partly in section of such partsof the gramophone as are necessary to illustrate the present invention;

Fig. 2 is a side elevation ofFig. 1;'

Fig. 3 is a fronfi view of Fig. 1;

Fig. 4 is a plan of an alternative construction.

Like reference characters denote like parts throughout the drawings.

indicated atflA. A hollow arm B extends from the'base B of the horn toward the center of the record, this armbeing similar ,to the usual swinging hollow arm upon which the reproducer is mounted. In this construction, however,.the arm B is fixed and it is provided, at its outer end, with a transverse socket or tube C. The interior of this tube C is" in communication with the interior of'the tube B.

Within this socket there slides a sound-- tube D, Which. carries a reproducer E E at each end. An 0 eni ng D inthe tube D d to pass from the tube D to the fixed arm B" and thence to the horn. The disposition of the parts is such that the sound-tube D lies approximately on a diameter of the disk and it is mater such length that when one reproducer E'is hearing on the record at its'outer margin, the

other reproducer E is ready. to bear on the record at its inner margin; In order to'provide for the use, of records of different sizes, the t e D may bemade telescopic, a suitable c amp bein provided to fix it after it has been adjuste .to the required length.

The twon'eedl'es F F on the reproducer-s are inclined in opposite directions since they bear on the record on opposite sides of its ceiiter and they are arranged to bebrought alternatiy el into contact with the record b Yin t a tube D, with the reprodu cers a slight rotativemotion about the axis of the t'ube. Thus, in Fig. 2, a slight clock- 70 Referring first to. the construction illus-.. trated 1n Figs. 1, 2" and 3, a disk-record is wise rotation of the tube D will lift the needle F from the record and bring the needle F intocontact with the record. Va-

rious means may be provided for effecting this .rotation and one is illustrated by wa of example. A rod G is fixed on the arm and provided with arms G G? extending over the tube D. Atjeach end of the tube there is mounted a finger H H which has a certain freedom of moveme t between two stops on the tube D. The isposition of these arms is such that when the tube D is moved across the disk to its limiting position, one of these arms comes into contact with the cooperating arm Gr or G and by further movement of the tube the arm H (or the arm H is swung across from one side of the vertical to the other; The arms H H are weighted so that as soon as they are Various other devices may be used for end of separate sound'tubes J J.

tilted past the vertical they fall, and by engaging one of the stops on the tube D, the latter is turned so as to reverse the needles in the manner above described. This weight also serves to insure that the needle is held in contact with the disk with the necessary pressure.

effecting the change-over of the needles. Thus, for example, the disk may be carried on a special tra which has a cam formed on its edge, an a projection on each end of the sound-tube may be arranged to be engaged by this cam as it approaches the edge of the tray so as to rock the tube D and reproducers E E A modified construction according to this invention is illustrated diagrammatically in F ig. 4. In this case the two reproducers E E instead of being mounted upon a common sound-tube, are each mounted on the Each of these tubes is in communication with the in terior of the horn-support by a swivel joint so that each of them can swing across the record in the ordinary way. The two tubes are adjusted in a definite angular relationship with one another by an adjustable tie rod K so that they can be set with the two needles F F spaced relatively to the record I. be pivotally connected to one tube J and secured'to the other tube J by two nuts K K engaging between them 9. lug on the tube J. r

The two reproducers E E are each mount ed on the end of its sound-tube so as to be capable of slight rotation thereon so that the needles F F can be alternately brought into operative contact with the record A. Any convenient mechanism lgay be used for effecting this shiftingof te reproducers and one arrangement has been shown by way of example. Bell-crank levers I1 I. are mounted on the sound-tubes J J and each j slide longitudinally, two reproducers mountthe record, the linkage provided. transmits the motion to the other reproduoer so as to bring its needle into contact with the record. The necessary movement is imparted to the system by providing a third arm on each of t e bell-crank levers and a central pin or lug M which is so positioned that when a re producer has traveled across the record to the desired extent, the, extra arm on one of the bell-crank levers engages withthis pin M. Various otherv forms of mechanism, however, may beused for efiecti the necessar simultaneous movement of t e needles} he special advan geof this arran 'e ment is that each reprodu r is directly connected to the horn and the sound-reproduction is improved as there are no pockets in the sound-passage which tend to localize the sound mstead of transmitting it to the horn.

It is to be understood that the precise details of construction which have hereinbe: fore been set forth are given by way of examide of the application of this invention, an the invention is not limited to these details except as set forth in the appended claims.

What I claim as m invention and desir to secure by Letters atent is:- a 1. In a repeating mechanism for a gramophone the combination of a sound-tube, a

; supporting member set diametrically to the record wherein said tube is free to slide longitudinally, two'reproducers mounted one at each end of said tube and angularly displaced from one another about the longitudinal axis of .the tube, said reproducers being spaced apart such a distance that when one is opposite the inner margin of the record the other is opposite the outer margin thereof, a pin projecting upwardly from each re reducer, two wedge-shaped members secure on said supporting member in such position as to engage respectively one of said pins at the end of the travel of the tube and rock the tube and reproducers about the longitudinal axis of the tube to render one reproducer operative and the other inoperaed one at each end of said tube and angularly displaced from one another about the longitudinal axis of the tube, said repro ducers being spaced apart such a distance that when one is opposite the inner margin of the record the other is opposite the outer about the'longitudinal axis of the tube to margin thereof, a pin projecting upwardly render one reproducer operative and the from each reproducer, two wegi ze-sha ed other inoperative. 10 members secured on said supporting mem er In testimony whereof I havesigned my 5 in such position as to engage respectively name to this specification.

one of saidfins at the end of the travel of the tube an rock the tube and reproducers NOEL PEMBERTON-BILLING.

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