US1753986A - Combined electrical phonograph and radiocarinet - Google Patents

Description

April 8', 1930.` H. l.. GRIGGS 1,753,986

COMBINED ELECTRICAL PHONGRAPH A ND RADIO CABINET ATTQRNEY INVENTOR my. fzygs ATTORNEY April 8, 1930. ,\H. L.. GRIG'GS" I i COMBINED ELECTRICAL PHONOGRAPH AND RADIO CABINET' Filed June 13, 1925 2 sheets-sheet 2 Patentedlpr. 8, 1930` UNI'IED STATES PATENT oFF-ice HENRY I.. GRIGGS, F PELHAM,INEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

WM. H. y:BRISTOL TALKING-'PICTURE CORPORATION, 0F WATERBURY., CONNECTICUT,

.A CORPORATION 02|?v CONNECTICUT commun ELECTRICAL `riaorfroGRAPH AND RAnIocABINET Application led June 13, 1925. Serial No. 36,854.-

The invention ,relates to cabinets for sound reproducing apparatus, more particularly'a A phonographic unit and a radio receiving unit, which are housed thereby.

The invention has for its object, in a cabinet of this character, the provision of a sound y emitting member or electrical loud speakin .receiver suitably Vhoused therein and lwhic receiver shall be common to both of the units,

the phonographic reproducing unit to this I 'dio receiving unit 'and is designed to accom- `modate any standard or special type thereof; and is of such proportions that the cabinet is not restricted to one particular make or style of radio' apparatus. A further object ofthe invention consists in means forautomatically disconnecting one of said units from the loud speaking receiver when it is desired to operate the other. The invention has for a still further object to increase, if desired, the volume of the sound from the phonograph apparatus.

The nature of the invention, however, will best be understood when described in connection with the accompanying drawings, in whichy Fig. 1 is a frontelevation of the novel cabinet of the upright style, with portion broken away. A

Fig. 2 is a vertical transverse section therethru Fi. 3 is a front elevationof a console type Fig- 4 is a detail fragmentary view illustrating the operation of the switching mechanism. l

Fig. 5 is a wiring diagram of the electrical connections involved.

Referring to the drawings, more particularly to Fi s.'1 and 2 thereof, 10 designates al suitable ca inet for housing the various instrumentalities hereinafter set forth and may be supported upon legs 11, the cabinet .shown in said figures being of the upright type. As

shown, the particular cabinet is provided withfour portionsseparated by suitable dividing walls, the uppermost portion containing a .loud speaker compartment 12 and the front of which is "closed over in the usual manner bygrill Work, and thru which the sound emitted by, a loud speaker 13 is projected. Upon either side of said compartment 12 may .be provided record compartments 14 for storing phonographic records in manner well understood.'

Immediately -beneath the vaforesaid compartments is located the phonograph portion comprising a compartment 15 in which is mounted a rotatable turn-table l'operated from an electric motor 1.7 under the control of a switch member 18. Associated with this turntable .is a microphonic transmitter 19 carrying a Astylus 20 adapted to operate in the grooves, of a record 21' carried by saidv turn table, as is well understood. lUpon ,either side of the compartment 15 are located further compartments 22 and 23 for volume control apparatus for the phonograph device, the control being eifected thru rotating suitable knobs 24 and 25 respectively andlaccessible when the drop front 26 is lowered.

Beneath the said phonograph and control compartments is located a compartment 30 With drop front 31, said compartmentbeing `of sucient capacity to receive and house a radio cabinet 32 whichA may be of-any Wellknown or special design, suitable connections (not shown) being provided within the cabinet as for` antenna and ground and the usual A and B-batteries. The latter may behoused in a further compartment 35 located beneath the radio compartment 30 and closed by a the uppermost portion and the loud speaker compartment being closed by a door 43 and.` the phonographic and volume control coal partments by. a door 43. In order to affo `l convenient access to the turntable for renlan` .diately beneath the same the battery com-V partment 46, as in the previously described embodiment.

electrical receiver common to both the phonograph unit hereinbefore described and the radio unit; and to this end, provision is made for cutting eff automatically the one Aunit from'the speaker when the other is put into u se` Any suitable means for accomplishing this control ofthe circuit may be provi ed. For example, a spring urged plunger type of switch 50, as shown more particularly in Fig. 4, may be secured to a wall of one of the compartments, for example the radio compartment, the plunge" 51 thereof being adapted to cooperate with the door thereof so that when the latter is in the lowered-posi- .25 tion shown in-Fig. 2, or the dotted osition,

` Fig. .4, the-.plunger will he-exte'nde as indicated in dotted sition Fig. 4,and the circuits thru the 'switches respectively closed and opened and vice versa That is tosay,

when the cover ofa radio compartment is lowered, electrical connection is made between the radio set therein and the loud speaker while simultaneously therewith the circuit between the microphone transmitter or ower ampliercircuit and the said loud spea er is opened. It will be appreciated that if desired provision ma .also be made in similar manner to cut olf t e loud speaker-from the phonograph portion when the door orlid for rangement there can betggno confusion of sounds thru simultaneousoperation of both j The general arrangement offthe circuits involve is indicated in Fig. 5 .of the drawings, tlie transmitter 19 beingof the diier- 'ential type and operated fromfthe' A-battery 37,"although it will be understood that lan independent battery ina .be'gjemployed for this purpose if desired. t ispreferred to include between said transmitter and theiloud s aking receiver aflteridevice for,"

`e iminating to a `;`extent extraneous noises, for example af evice of the character set forth in U. S. Letters Patent No. 1,490,764 to W. H. Bristol. A rheostat 56 also is ineluded in the battery ycircuit to the transmitter to lcontrol the volume, being operatedl its compartment is closed; but generally thiswill not be required. `By .the aforesaid armeans controlled there incasso to the lB-batter'y 37 and arranged to'be connected with the llt-batter j? 37 by further turning of the knob 25, the power ampli'er itself being controlled by, the knob 24. In order conveniently to connect the transmitter output to the said amplifier, a double-pole dou ble-throw switch 58 is included in the connec- 1 tion to the loud speaker- 1 3, and this switch I In accordance with the invention, the loud 'p lmfspeakerdevice 13 is intended to serve as an may be arranged either for independent manual control or be operated directly thru the rotation lof knob 25. The switch 50 with double contact is shown` connected in the loud speakerA circuit in manner to cut in one or. the other of the'two units, the phonographic nit being indicated as in circuit and with power amplifier disconnected.

By the contacts of the switch 50, therefore,

-a circuit may be established between the lower switch arm and the outer portion of the plunger element, that is to say the p'ortion to the let of the insulation at 50. This corresponds to the closed position indicated at the upper contact 50 of the wiring diagram. The other circuit is established when the plunger is projected outwardly, as in the dotted position Fig. 4, the conducting portion at 51 to the right of the insulation th'en having moved outwardly to a position beneath the upper of the contact arms and establishing the other circuit or at the lower of the contacts 50, Fig. 5. Normally, and when the door is in the closed position, the plunger is forced inwardly, as shown in-full lines in Fig. 4, so

that the said upper arm rests upon the insulation portion of the plunger and opens the circuit conforming to the showing at the lower contact 50, Fig. 5 of the drawings.

l claim 1. A musical cabinet embodying a casing providing a phono aph compartment, a turntable therein andr an electric reproducer unit associated therewith; a radio compartment, and a radio receiving unit therein; a

loud-speaking receiver common to both units, and circuits thereto from said units; a movable-cover member for one of the compartments to render its contained unit normally inaccessible; and switch mechanism o erable .providing a phonograph* compartment, a

turntable therein and an electricalreproducer unit associated therewith; a radio compartment, and a radio receiving unit therein; a loud-speaking receiver common to both units, and circuits thereto from said units' means to close there ective cabinets; and for controlling the circuits to the loud-spea g receiver to complete the one ,circuit thereto upon opening a by movement of the said cover mem r for correspondigcabinet and simultaneously 3. A musical cabinet embodying a casing Aproviding a sound compartment, and a loudspeaking receiver therein; a phonograph compartment, a turntable therein, and a microphone transmitter associated therewith; electrical connections from said transmitter tothe loud-'speaking receiver; a radio compartment, av radio receiving set therein, and electrical connections from same to said loud speaking' receiver; a movable cover for one of the compartments; and switch mechanism associated therewith for closing the electrical connection between the one of the said units and the loud-speaking receiver, and to open simultaneously the circuit between the other unit and the said loud-speaking receiver` 4. A. musical cabinet embodying a casing providing a sound compartment, and a loudspeaking receiver therein; a phonograph com artment, a turntable therein, and a microp one transmitter associated therewith; electrical connections from said transmitter to the loud-speaking receiver; and an inter- 4 mediate. volume control device included therein a radio compartment, a radio receiving' set therein, and electrical connections from same to said loud-speaking receiver; a movable cover for 'one ofthe compartments; and switch mechanism associatedltherewith for,

closing the electrical connection between one of said units and the loud-speaking receiver when said coveris opened and to open simul-v taneously the circuit between the other unit and the said loud speaking receiver,

5. A musical cabinet embodying a casing providing a sound compartment, and aloud- .ceive when said cover is speakmg receive'r 1therein; a phonograph compartment, a `turntable therein, and a microphone transmitter associated therewith;

electrical connections from said transmitter,

to loud-speaking receiver, and an intermediate volume control device included therein and comprising thegminic amplifier apparatus; a radio compartment, a radio receiving set therein, a delectrivcal connections from same to saidiolil'd-speaking receiver; a movable cover foone of the compartments;

and switchmehamsm associated therewith for closin ,the electrical connection between l' opened and to open one d? said units and the loud-speaking re-l slm ltaneously the circuit between the other unit and the said loud-speaking receiver,

ln testimony whereof I aix my signature,

n HENRY L. GRIGGS.

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