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June 21, 1932. R. A. FESSENDEN 1863,841 METHOD and APPARATUS for COORDINATING RADIO and PHONOGRAPH REPRODUCTION Original Filled May 2, 1924 Fg-1- to TELEPHONE LINE

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June 21, 1932. R. A. FESSENDEN 1863,841 METHOD and APPARATUS for COORDINATING RADIO and PHONOGRAPH REPRODUCTION Original Filled May 2, 1924 Fg-1- to TELEPHONE LINE June 21, 1932. R. A. FESSENDEN 1863,841 METHOD AND APPARATUS FOR COORDINATING RADIO AND PHONOGRAPH REPRODUCTION Original Filled May 2, 1924 fg-1- to TELEPHONE LINE 20 PHONELETRL GENERATOR To traNg Mirr Er DR REEver VDLIN fa Patented June 21, 1932 1,863,841 UNITED STATES PATENT OFFICE REGINALD A. FESSENDEN, OF CHESTNUT HILL, MASSACHUSETTS, ASSIGNOR TO SUB MARINE SIGNAL COMPANY, OF PORTLAND, MAINE, A CORPORATION OF MAINE METHOD AND APPARATUS FOR COORDINATING RADIO AND PHONOGRAPB REPRODUCTION Original application filed May 21, 1924, serial No. 714,899. Divided and this application filed September 13, 1927. serial No. 219,351. the adjustable resistance 37, or other suitable My invention relates to improving the ef means. 37' is an adjustable impedance for ficiency of radio and wire telephone and pho regulating the strength of the electric im nograph reproduction, and more especially to pulses in the circuit, and hence the strength co-ordinating these methods of reproduction, of the reproduction in the piano-speaker 39. as 5 (and similar means, as reproduction from 30 is the circuit of the wireless or wire tele different radio stations), and still more espe phone line; 33 is an amplifier operating the cially to convenience in said co-operation and piano speaker 39, described below. 34 and 30' to the production of new effects and results are transformers for putting the phono thereby. electric generator and the telephone circuits 80 10 The object of my invention is to accom in operative relation to the amplifier. plish said increase in efficiency and said co 32 is a switch. When it is thrown to the ordination, and said convenience in co right, on to the contact 32, the wireless tele ordination and operation, and said new effects phone is cut out, and only the phonograph and results. record is heard. When it is thrown to the 85 3 The accompanying drawing shows, partly left, to contact with 33, the phonograph is diagrammatically, means, adapted for the cut out and at the same time, by reason of the carrying out of my invention. insertion in the circuit thereby of the com Figure 1 shows the arrangement of appara pensating coil 33, or other suitable means, tus and circuits. the tuning of the wireless circuit is main 23 Figure 2 a type of electric generator tained unchanged. When the switch is in the apted for use with my electro-phonograph intermediate position, as shown, both wire 8. - less and phonograph act conjointly and a Figure 3 shows the application of the in soloist on the wireless may be accompanied vention to a violin in detachable form in its by a full orchestra on the phonograph, or is £3 relation to a violin bridge. vice versa, speed being regulated by 37 and This application is a division of U.S. ap relative intensity by 37'. 45 is a switch whose lication Serial No. 714,899, filed May 21, 1924. function is described below. In Fig. 1 is shown a novel system in which Fig. 2 shows a suitable form of phono a radio or wire telephone and a phonograph electric generator more in detail. Here a so 30 act individually or in conjunction, and with coil 210 of light weight is fastened to the out any necessary mechanical connection be phonograph needle, as shown, and being. tween the phonograph record and the de moved back and forth in the field of the vice emitting the sound, i. e. the reproducer; magnet 190 by the motion of 8, pivoted at here shown as a piano 39. Here 20 is the 27 and actuated by the revolving phonograph 85 35 phono-electric generator, whereby the mi disc 28, generates currents which are carried nute electric impulses are produced in the to the reproducer 18, as shown. circuit 37, 34, by the relative motion of By this invention a number of entirely new the record 28, either optically as shown in and very useful results are obtained, e. g. U. S. applications Serial No. 685,699, filed It enables one to accompany a broadcast 90 March 23rd, 1912, and Serial No. 42,856, solo by McCormack, “That Old Refrain' for filed July 29th, 1915, and Serial No. 635,362, example, by a phonograph record of Kreis phonograph-kinetoscope, filed July 26th, ler's (the composer's) rendition on the violin 1911, and Serial No. 423,186, filed Nov. 10th, of the same composition, and to modulate the 1920, (but which optical methods and appa strength of the accompaniment at every in- 05 45 ratus are not claimed herein); or as shown, and more fully and in detail in Fig. 2, me stant, and instantaneously, to suit the mo chanically by the action of the phonograph mentarily varying strength of the broadcast needle 8; or in any other suitable manner. of the soloist; the tempo being similarly The disc 28 is driven by the electric motor varied to coincide with that of the broad 60 36, whose speed is regulated as desired by cast; or to supplement the rendition by Dam- % 2 1,868,841 rosch and his orchestra of "Evening Star in the same part of the room is obviated. from Tannhauser over the radio by Caruso's The wireless apparatus is often best located voice from a phonograph record; or to hear in one part of the room, near a window, while Caruso and McCormack sing together the the phonograph discs may be more conven- . 5 same famous song, a possibility of great value iently located near a fire place or electric in the study of singing. reading lamp. Or one member of the house 70 Since the same loudspeaker is used, e. g. hold who may prefer to sit in one place, may applicant's piano loud speaker, and actuated prefer the radio and another, who may pre in the same way, i.e. by the same loudspeak fer to sit in another, may prefer the phong er mechanism, and all scratching and static and other abrupt disturbing impulses are E.oth reproductions With the area equally source, well, both no will matter hear s eliminated accurate and satisfactory compar where they may sit. ison and accompaniment is rendered possi By the use of the piano as loud speaker, 5 ble, which is of course not possible where the absolutely correct reproduction is obtained loud speakers are of different types, or op and static and scratching is cut out. 80 erated by different types of mechanism, e.g. By this system the power required for one by a mechanically acting lever and the other by an electromagnetic mechanism, or driving the phonograph discs is much re there are disturbing impulses. duced and the whole outfit may be driven 20 from dry cells; a matter of importance where The listener may himself accompany the no electric power circuits are available. 85 radio or phonograph by playing on the piano, It is preferred that the thrust of the mov and the effect is much more natural and agree ing part of the electromagnetic or other able, as both sounds come from the same lo mechanism which operates the loud speaker 25 cation in the room. The desired changes in against the diaphragm or its equivalent modulation may be made instantly and by should be opposed, not by a spring or other 90 one seated at a distance, in place of one stand device having a natural i. but as shown ing beside the phonograph loudspeaker; and in Fig. 5 of the parent application, by in without danger of injuring the record, by ertia, and that the only substantial restor 30. merely shifting the element 37 . ing forces should be those inherent in the Another advantage is in shifting phono diaphragm or its equivalent. This has been 95 graph records at a distance from the loud found to give, for reasons not here disclosed, speaker without the necessity of employing much better results. special mechanism. One may be seated in a When the switch 45 is thrown, and the chair on the opposite side of the room from piano is played upon, the loudspeaker mech P the piano loudspeaker, and listening to the anism acts as a generator and the music 103 radio. Abroadcast may come in which might played is transmitted through the circuit 46 be accompanied by a phonograph record. If to any place desired, for example to another the phonograph motor and disc table is at room in the house. 40 the elbow, all that is necessary to place the This reverse action of electromagnetic desired disc on the rotating table, and ad , mechanism is well known. An example is 105 just the speed and then the modulation by the telephone receiver which may be used to moving 37, 37. And the modulation may transmit electric waves as well as to produce be made such that the phonograph record is sound waves. When acting as a producer reproduced many times louder than any of electric waves, all that is necessary is to 45 standard type of phonograph could do, or have an initial magnetization of the wire, 43. 10 adjusted more delicately and softly, or loud If it is not desired to do this by permanent ly and softly on the same record, to accom magnetization, it may be done by passing a pany the radio, without moving from the slight direct current in the coil 50. The wire seat. And if the micro-photo-phonographic 43 having its magnetization or permeability 50 records are used, described and claimed in changed by the action of the acoustic waves Serial No.
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