Feb. 1, 1927. 1,616,416. R. A. FESSENDEN METHOD AND APPARATUS FOR COORDINATING RADIO AND PHONOGRAPH REPRODUCTION Original Filled May 21, 1924 72 7azAA/OAa a/ava Ayovo aaa.c777C eafavataa 762 Z27, 2 Patented Feb. 1, 1927. 1,616,416 UNITED STATES PATENT OFFICE. REGINALDA, FESSENDEN, OF CHESTNUTHILL, MAssACHUSETTS, METHOD AND APPARATUS FOR COORDINATING RADIO AND PHONOGRAPHREPRO DUCTION. Original application fled May 21, 1924, Serial No. 714,889. Divided and this application fled January 35, 1926, Serial No. 83,499. My invention relates to improving the ef piano speaker 39, described below. 34 and 55 ficiency of radio and wire telephone and 80' are transformers for putting the phono phonograph reproduction, and more espe electric generator and the telephone circuits cially to co-ordinating these methods of re in operative relation to the amplifier. 5 production, (and similar means, as repro 32 is a switch. When it is thrown to the duction from different radio stations), and right, on to the contact 32', the wireless tele 60 still more especially to convenience in said phone is cut out, and only the phonograph co-operation and to the production of new record is heard. When it is thrown to the effects and results thereby. left, to contact with 33, the phonograph is O The object of my invention. is to accom cut out and at the same time, by reason of the plish said increase in efficiency and said co insertion in the circuit thereby of the com 65 ordination, and said convenience in co-ordi pensating coil 33, or other suitable means, nation and operation, and said new effects the tuning of the wireless circuit is main and results. tained unchanged. When the switch is in 5 The accompanying drawings show, partly the intermediate position, as shown, both diagrammatically, means adapted for the wireless and phonograph act conjointly and 70 carrying out of my invention. a soloist on the wireless may be accompanied Figure 1 shows the arrangement of appa by a full orchestra on the phonograph, or ratus and circuits and vice versa, speed being regulated by 37 and 20 Figure 2 a type of electric generator relative intensity by 37. 45 is a switch adapted for use with my electro-phonograph. whose function is described below, 5 This application is a division of U.S. ap Fig.2 shows a suitable form of phono-elec plication Serial No. 714,899, filed May 21, tric generator more in detail. Here a light 1924. coil 210 is fastened to the phonograph nee 25 In Fig. 1 is shown a novel system in which dle, as shown, and being moved back and a radio or wire telephone and a phonograph forth in the field of the magnet 190 by the SO act individually or in conjunction, and with motion of 8, pivoted at 27 and actuated by out any necessary mechanical connection be the revolving phonograph disc 28, generates tween the phonograph record and the de currents which are carried to the reproducer 30 vice emitting the sound, i.e. the reproducer; 18, as shown. here shown as a piano, 39. Here 20 is the By this invention a number of entirely 85 phono-electric generator, whereby the mi new and very useful results are obtained, nute electric impulses are produced in the e.g. circuit 37, 34, by the relative motion of the It enables one to accompany a broadcast 35 record 28, either optically as shown in U. S solo by McCormack, “That Old Refrain' applications Serial No. 685,699, filed March for example, by a phonograph record of 23rd, 1912 and 42,856, filed July 29th, 1915, Kriesler's (the composer's) rendition on the and Serial No. 635,362, phonograph-kineto violin of the same composition, and to modu scope, filed July 26th, 1911 and Serial No. late the strength of the accompaniment at ev 40 423,186, filed Nov. 10th, 1920, (but which op ery instant, and instantaneously, to suit the tical methods and apparatus are not claimed momentarily varying strength of the broad 95 herein); or as shown, and more fully and in cast of the soloist; the tempo being simi detail in Fig. 2, mechanically by the action larly varied to coincide with that of the of the phonograph needle 8; or in any other broadcast; or to supplement the rendition by 45 suitable manner. Damrosch and his orchestra of “Evening The disc 28 is driven by the electric motor Star” from Tannhauser over the radio by 00 36, whose speed is regulated as desired by the Caruso's voice from a phonograph record; adjustable resistance 37, or other suitable or to hear Caruso and McCormack sing to means. 37 is an adjustable impedance for gether the same famous song, a possibility of 50 regulating the strength of the electric im great value in the study of singing. pulses in the circuit, and hence the strength Since the same loudspeaker is used, e. g. 105 of the reproduction in the piano-speaker 39. applicant's piano loudspeaker, and actu 30 is the circuit of the wireless or wire tele ated in the same way, i.e. by the same loud phone line; 36 is an amplifier operating the speaker mechanism, and all scratching and 1,616,416 static and other abrupt disturbing impulses will hear both reproductions equally well, are eliminated accurate and satisfactory com no matter where they may sit. parison and accompaniment is rendered pos ly the use of the piano as loud speaker, sible, which is of course not possible where absolutely correct reproduction is obtained the loud speakers are of different types, or and static and E. is cut out. operated by different types of mechanism, e. By this system the power required for O g one by a mechanically acting lever and driving the phonograph discs is much re the other by an electromagnetic mechanism, duced and the whole outfit may be driven or there are disturbing impulses. from dry cells; a matter of importance 0 The listener may himself accompany the radio or phonograph, by playing on the pi SeeOe. no electric power circuits are avail ano, and the effect is much more matural and agreeable, as both sounds come from the same It is preferred that the thrust of the mov location in the room. The desired changes ing part of the electromagnetic or other 5 mechanism which operates the loud speaker in modulation may be made instantly and by against the diaphragm or its equivalent 80 one seated at a distance, in place of one should be opposed, not by a spring or other standing beside the phonograph loudspeaker; device having a natural period, but as shown and without danger of injuring the record, in Fig. 5 of the parent application, by in by merely shifting the element 37. ertia, and that the only substantial restoring Another advantage is in shifting phono forces should be those inherent in the dia graph records at a distance from the loud phragm or its equivalent. This has been speaker without the necessity of employing found to give, for reasons not here disclosed, special mechanism. One may be seated in a much better results; but same is not herein chair on the opposite side of the room from claimed; being claimed in a companiol, ap the piano loud speaker, and listening to the plication, also a division of 714,899. 9) radio. A broadcast may come in which When the switch 45 is thrown, and the pi might be accompanied by a phonograph ano is played upon, the loud spaker mecha record. If the phonograph motor and disc nism acts as a generator and the music table is at the elbow, all that is necessary to played is transmitted through the circuit 46 St place the desired disc on the rotating table, to any place desired, for example to another and adjust the speed and then the modula room in the house. tion by moving 37, 37. And the modulation may be made such that the phonograph re By the term “electro-phonograph' is cord is reproduced many times louder than meant a phonograph in which the recorded s any standard type of phonograph could do, sounds are first transformed into electric im or adjusted more delicately and softly, or pulses before being reproduced; and includes 00 loudly and Softly on the same record, to ac the elements necessary for generating the company the radio, without moving from records.electric impulses from the phonograph the seat. And if the micro-photo-phono 40 graphic records are used, described and Applicant, in his investigations on cutting claimed in Serial No. 423,186, filed Nov. 10th, out scratching, static, and abrupt disturbing 1920, the storage and handling and cost of impulses generally, by the use of a plurality the records is much reduced. - of resonant elements, discovered that even a The type in which an independently play violin, with only four strings, though not 45 able musical instrument with strings such as cutting out static to any useful extent, when a piano is used, enables the listener to ac used as a loud speaker for electric-phono company either the radio or the phonograph graphs, cut out a part of the scratching from or both combined, himself. This is of great the phonograph discs. Applicant the discov value to students on these instruments. A ered (amongst other ways) that by adding ad 50 student can compare his own touch on the ditional resonant elements, for example, piano with that of the greatest living mas reeds attached to the violin bridge, substan ters of the art; or of those long dead.