The talking machine world (Jan-Dec 1906)

58 THE TALKING MACHINE WORLD. jects are the provision of means simple in construction, durable, reliable and inexpensive in the manufacture. In the drawings, Fig. 1 is a front view of the speaking attachment, the cover being removed. Fig. 2 is a section on the line 2 2, Fig. 1. Fig. 3 is a longitudinal section, drawn to an enlarged scale, of the style guide or socket. Fig. 4 is a like view of a second form of guide having a conical interior. Fig. .5 is a like view of a third form of guide having an internally projecting top portion. Fig. 6 is a front view of a speaking attachment similar to that shown in Fig. 1. but having a magnet provided. Phonogeaph Record Cleanee. Henry A. Place, Providence. R. I., assignor to J. Newcomb Blackman, New York. Patent No. 831,987. This invention relates to improvements in brush attachments for cleaning phonograph records, and has for its object to simplify the construction of such brush attachments, so that Sound records of the kind to which the present invention relates are relatively simple in character, and the matter of duplicating thera ^2 they may be manufactured easily and economically. In the accompanying drawings, illustrating the invention. Fig. 1 is a vertical section, partly in elevation, showing a sound reproducing instrument constructed in accordance with the present invention. Fig. 2 is a similar view, showing a modified means of securing the brush in position. Fig. 3 is a detail plan view, showing part of the construction illttstrated in Fig. 2. Fig. 4 is a perspective view of the brush shown in Figs. 2 and 3. Figs. 5 and 6 are detail views of the brush shown in Fig. 1. SOI'>'D REPKODt'CING MACHINES. Curtis A. Smith, Elgin, 111. Patent No. 831,900. This invention relates to improvements in sound reproducing machines, and has special reference to the means for modifying the quality ooes not present the difficulties of duplicat'uj phonographic records. Prior to the invention in the making of sound records on a disc blank — for example, in the form of a sinuous groove of substantially uniform depth and width — a suitable plate or foundation was covered with a thin layer or film of wax-like material, which was engaged by a needle-like recording stylus connected to the diaphragm, the arrangement being such that in the absence of vibrations the stylus removed the film of wax-like material to its full depth to disclose the foundation and in the form of a spiral groove of uniform width. By vibrating the diaphragm the said groove was caused to partake of sinuosities and undulations corresponding graphically to the soundwaves. By suitable etching, electroplating, photographic or allied processes a matrix was secured from the master so formed and used for the production of duplicates by various methods. The processes used prior to this invention for the making of these records were objectionable for many reasons, and especially because the records produced are not accurately representative of the sound-vibrations, first, because the recording stylus, in order that it may certainly cut through the depth of the wax-like material, must be engaged with considerable friction against the foundation on which the wax is carried, thereby offering unnecessary resistance to the vibration of the stylus, and, second, because the stylus, being unprovided with cutting edges, in its vibrations merely displaced or compressed the waxlike material in the formation of the groove, instead of cleanly cutting it. The object of this invention is to provide improvements in the art of making records of this kind in the apparatus involved and by which the resulting records will be more perfect and capable of more accurate reproduction than records of the kind as heretofore made. The invention in its preferred form resides in the utilization of means co-operating with the recorder for causing the latter to always cut to the desired depth in the wax-like material irrespective of variations in the thickness of the blank or other eccentricities in the plane of the recording surface. This feature of the invention in carried into effect by engaging the recorder to the desired depth in the recording material by gravity and mounting the recorder so that it is free to rise and fall to accommodate itself to any changes in the plane of the recording surface. The accompanying drawings form a part of the specification. Fig. 1 is a plan view of the complete apparatus for operating on a disc-like blank, and showing the recording stylus as being mechanically adjustable with respect to the blank; Fig. 2, a side elevation of the same; Fig. 3, a section on the line 3 3 of Fig. 1; Fig. '4, a section on the line 4 4 of Fig. 3; Fig. 5, a bottom view of the recorder proper in its preferred form; Fig. 6. a longitudinal section on the line 6 6 of Fig. 5; Fig. 7, a longitudinal section through the swinging arm. Illustrating an of the sound issuing from the sound ducts to the audience. Fig. 1 is a rear elevation of a sound reproducing machine with the invention as applied thereto. Fig. 2 is a vertical sectional view of the invention. Fig. 3 is a detail view of a part of this invention, showing the position of parts when this invention is thrown out of operation. Fig. 4 is a detail sectional view of the extension piece with the mute or stop disc in position and the exteriorly located button for operating same. SorxD Recordixg Apparatus. Thomas A. Edison, Llewellyn Park, N. J., assignor to New Jersey Patent Co., West Orange, N. J. Patent No. S3J 606. This invention relates to improved sound recording apparatus of the type wherein a graphic sound record is produced on a disc-like or cylindrical blank and which is formed of a sinuous groove of substantially uniform depth and width as distinguished from the phonograph wherein these dimensions of the record groove are not r.nifoiin. You're Not the Only Dealer Who doesn't sell "S-in-One'' — but you will be, pretty soon, if you don't hurry. Are you sure you know just how good "3-in-One" is? If not, simply write us for FREE sample bottle — then try it. Then you'll know what "3-in-One" really is — the greatest oil on earth for talking machines. Then you'll sell it, as other smart dealers do — and net 50 and 100 per cent, profit — without bursting a blood vessel making sales. ■■3-in-One" sells itself. 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