Патент USA US2070392код для вставки
Feb-'9, 1937- ' 2,070,392 J. B. BROWNING RECORDING AND REPRODUCING SYSTEM Filed July 1, 1931 . .mu 6J4 “ x ! 6 J /. dt4.27/ ,0F.r/Jli1 Kg“/_ fm1%/éwf. Z L2” 2/ W.2Q 73//y v$3544. 0.» : , . ll.7 6 . John B B?owm'ny Mwé $002142, Attorneys. 2,070,392 Patented Feb. 9, 1937 UNITED STATES PATENT OFFICE 2,070,392 RECORDING AND REPRODUCING SYSTEM John Bailey Browning, Camden, N. J. Application July 1, 1931, Serial No. 548,143 9 Claims. (01. 274-—46) One object of this invention is to provide an improved method for recording the vibrations corresponding to sound and/or light impulses separately or simultaneously. Vibrations corre 5 sponding to sound and light impulses may be pro duced in the manner disclosed in Patent No. 1,770,205 to Goldsmith dated July 8, 1930 or in my prior application Serial No. 419,350 ?led Jan uary 8, 1930. ' 10 Another object is to provide an improved press ing system or method of stamper production for vibrations corresponding to light and/or sound impulses. Reference is hereby made to “Record ed Programs” by A. J. Kendrick on pages 108, 109, 15 110 and 170 of the August, 1930 issue of Radio News, from which article it appears that a stamp er is the negative record or die from which com mercial records are duplicated. Further objects as well as details of construc 20 tion and operation will be hereinafter brought out in the following description and accompany ing drawing, in which - ' Figure 12 is a side view of an alternative form of recording stylus. Figure 13 is a side view of still another form of recording stylus. The method of my invention consists broadly 5 in chasing, chiseling, ironing, or otherwise form ing undulations corresponding to sound and/or light impulses or vibrations upon one or both edges of a thin ?exible band of malleable material such as metal. The metal tape after it isrecord- 10 ed upon may be wound upon a roll or spool and reproduced whenever desired by means of a suit able reproducing device as it is rewound upon an other roll or spool. A preferable procedure is .to wind the tape upon a suitable core to form a 15 Stamper, thus eliminating all the intermediate steps previously thought necessary in the record ing art. Referring to Figures 1 and 2 wherein is illus trated rather diagrammatically the embodiment 20 of my invention wherein is recorded upon each edge of a metal tape a series of undulations cor Figure 1 is a plan view illustrating rather di agrammatically one embodiment of my process responding to sound and/or’ light impulses, the tape is greatly exaggerated. cording devices I2 and "I3. As clearly shown in Figure 2 each series of undulations is in a plane which is perpendicular to that of the metal tape. tape I is shown being unwound from a roll or 25 of recording. ' . a spool 2 and passed between forming rolls 3 and 4 25 Figure 2 is a side view showing the process of to form the middle portion 5 and the thinner edge Figure 1. ' portions 6 and ‘I. The edge portions 6 and ‘I Figure 3 is a cross-section taken along line 3-3 _ are each chased, chiseled, ironed, or otherwise of Figure 2 and showing one form of recording provided with a series of undulations 8 and 9 30 tape prior to its being chased, ironed, chiseled or by means of the styli I0 and I I actuated by the 30 otherwise recorded upon. The thickness of the diagrammatically illustrated electrodynamic re Figure 4 is a cross~section taken along line‘ 4-4 of Figure'2 and showing the recording tape 35 at the moment it is being recorded upon. I The elastic or rubber-covered roller I4 is shown 35 Figure 5 illustrates cross-sections of two alter native forms of recording tape. . cording devices. _ The recorded tape is then Figure 6 is a fragmental, diagrammatical il lustration of a second ‘embodiment of my new 40 process. . Figure '7 is a cross-section taken along line 'l~;-~'I of Figure 6. Figure 7a is a view showing a series of undula 45 tions being impressed in. one edge of a tape (greatly exaggerated) by the drawing action of a stylus, which is shown in cross-section. Figure 8 is a vertical cross-section through a stamper made by my process. 50 Figure 9 is a front view clone form of record ing stylus._ _ . ‘ ' ‘ Figure 10 is a cross-section taken on line I?-IO of Figure 9. 5 Cl ‘ Figure 11,is a cross-section taken on line I I--I I of Figure 9. ' supporting the tape as it passes through the re- 0 passed through a suitable apparatus I5 for set ting the undulations in the metal and ?nally wound upon a roll or spool IS. The undulations 40 in‘ the tape may be set in the metal in a manner [similar to that in which steel springs are hard; ‘ “ened and tempered. ' Figure 5 showsv two possible alternative cross sections of tapes that may be used in my process, 45 the one indicated by H having tapered edges and the one-indicated by I8 having rounded edges, instead of the thinned edges as illustrated in Figures-3 and 4.‘ ~ ' Figures 6, '7 and ‘7a illustrate two alternative 50 forms of my improved method. In both of these methods, the thinned edge of the tape as it is fed from one spool to the other is straddled by one or the other forked ends 25 or 26 of the stylus 20._ In the ?rst method the stylus is given a vertical 2,070,392 2 vibratory movement by means of a suitable Thus it will be seen that I have provided a method electro-dynamic recorder of sound and/or light‘ for directly making the stamper of the recording process with the consequent elimination of the usual intermediate steps previously considered impulses and thus its forked end 25 produces the series of undulations i9 along the edge 6a of the tape Ia. In the second of these methods, the ‘ stylus 20 has imparted thereto a vibratory move ment perpendicular to the plane of the tape lb and thus its end 26 produces the series of hill and dale undulations Na in the edge 61) by a combined 10 twisting and drawing action. The requisite vibratory movement can be produced by means indispensible in the art. The disk stamper made by the method of Figures 1 to 4 results in a lateral cut record while those of Figures 6 and '7 will produce one of ‘the vertical-cut or “hill and dale” type, and that of Figure = 7a. will produce a “lateral”-cut record. of a suitable form electro-dynamic recording de vice. . While only oneedge is shown in Figures 6, '7 and 7a. as being recorded upon, either process may well be applied to both edges of the tape. One edge of the ,tape may be provided with un dulations corresponding to sound impulses and the other with undulations corresponding to light impulses, or one or both edges may be impressed with undulations corresponding to both sound and light impulses, i. e. one series of undulations may represent a talking moving picture. In the first embodiment of my invention, I may use either of the styli shown in Figures 12 and 13. That of Figure 12 is formed with a pointed edge 2| at one end while that of Figure 13 is provided with a pointed end 22 and a button or ball end 23, either one of which may be used for recording. As has been stated, the stylus 20 shown in Figures 9, 10 and 11 may be used in the second and third embodiments of my method. This stylus has two forked ends 25 and 26, the ?rst of which is used when the undulations are pro 35 duced in the edge of the tape by a vibratory movement of the stylus in the plane of the tape and the second of which is used when the stylus is vibrated perpendicular to the plane of the tape to produce a series of undulations by a twisting 40 and drawing action on the tape as it is fed through the forked end. The recorded tape made by any of the above 30 described processes may be reproduced by passing it through a suitable reproducing device while 45 being rewound from one spool onto another. If the tape is to be reproduced in this manner, the step of forming the thinned edge portion shown in Figures 1 and ZImay be omitted. Duplicate records of this type may be made by passing the 50 recorded tape through a suitable pressing device in face-to-face contact with a second blank tape. This latter method of making duplicate records may be used to provide a sound track along the edge .of a moving picture ?lm. 55 ' My preferred method is to wind the recorded tape about the pin 21 and core 21a .to form the stamper shown in Figure 8. The wound tape may be maintained in its spirally wound form in any suitable manner, as by means of a clamp ing ring 29. The thinned portions 6 and ‘I thus form the walls of the grooves 28 of the stamper. In‘ the ?nished record, the thinned portions 6 and ‘I will form the grooves and the grooves 28 of the stamper will form the walls. 65 ' An alternative method of forming a stamper is to wind the tape I after it is provided with .70 By my improved methods, I am enabled to produce a record of either the lateral-cut or “vertical-cut” type which can play for relatively long periods of time. In the case of the "vertical cut" type, the grooves can be spaced as close as ?ve hundred (500) to the inch and the record made of su?icient diameter to play for as long as seven hours. Since my records are capable of containing a large amount‘ of program material, it is possible a to record several selections on each side. The foregoing constitutes the essential and distinctive thought of my invention, but it is to be understood that the same may be combined with various other steps and details without a?ecting the peculiar results obtained. I claim:— 1. A method of recording which consists in chasing or engraving a continuous series of lateral undulations in the plane of the edge of a thin 30 tape corresponding to the impulses to be recorded. 2. A method of directly making a stamper which consists in producing an oiT-set edge in a ’ thin strip of material, forming a continuous series of undulations in the off-set edge corresponding I to the impulses to be recorded, treating said strip to set the undulations and winding about a core. 3. A record consisting of a metallic strip, in the plane of whose edge is chased or engraved a continuous series of lateral undulations corre 40 sponding to the impulses recorded. 4. A stamperfor sound records consisting of a tempered strip of flexible metal provided along one or both edges with a series of undulations corresponding to the impulses recorded and permanently wound into disk form, the windings being in direct contact. ' 5. A stamper blank for sound records consisting of a strip of malleable metal permanently wound into disk form, the windings being in direct con tact. . - 6. A stamper blank for sound records consist ing of a strip of malleable metal having a thinned edge portion permanently wound into disk form. said thinned edge serving to form a spiral groove . in said disk. , '7. A method of recording on the edge of a moving picture ?lm which consists in passing the unheated ?lm through a pressing device in face to-face contact with a metallic strip having im pressed therein undulations corresponding to the vibrations to be recorded. 8. A method of recording which consists in straddling a thin tape with a bifurcated record ing tool and moving said tape as the tool-is vibrated in accordance with the impulses to be the thinned edge portions 6 and 1 into a blank and record thereupon by means of a suitable stylus mounted in a suitable recording device (not recorded. shown). perpendicular to that of the-tape and vibrating . Commercial records may be made in the usual ways known to the art from the stamper made in any of the previously described methods. 9. A method of recording which consists in moving a thin tape with its edge in contact with a recording tool which is maintained in a plane ' said tool in accordance with the impulses to be recorded. _ - JOHN BAILEY BROWNING.