The talking machine world (Jan-Dec 1906)

04 THE TALKING MACHINE WORLD. and polished appearance and which will be free from depressions, elevations, discolorations and all forms of roughness or irregularity. With this end in view a large number of experiments have been made to obtain a mold-cap which when placed upon a tubular coreless mold will be capable of molding the upper end of the sound record in the manner referred to for an indefinite number of operations. From these experiments it has been determined that the mold-cap should have a concave surface, the outer edge of which during the molding operation adjoins and forms a continuation of the bore of the fold. Preferably the body of the mold should extend above at least the lower part of said concave surface, so that when the cap is removed from the mold the molded end of the record or that portion which forms the end after the reaming operation will be protected by the mold against accidental injury during the handling ft'i 2. of the same prior to the removal of the finished article from the mold. It has also been determined that the said concave . surface may be of such form as to entrap a portion of the air contained in the bore of the mold as the same descends into the molten material, in which case the air is permitted to escape through airholes extending through the body of the mold-cap. It has also obtained good results by providing a second groove concentric with the first groove and separated therefrom by a partition which tapers to a comparatively sharp edge. I have a^so discovered that the concave surface should be perfectly smooth and highly polished and preferably nickel-plated, and also that the moldcap should be kept cool during the molding operation, as by providing the same with a water jacket. Reference is hereby made to the accompanying drawings, in which Fig. 1 is a vertical section showing a mold supported in a mold carrier and surrounded by a water jacket in the usual manner and provided with a cap constructed in accordance with the invention. Fig. 2 is an elevation, on an enlarged scale, of the mold-cap shown in Fig. 1. Fig. 3 is a bottom plan view of Fig. 2, and F'ig. 4 is a top plan view of the same. Speed Indicator. Edmond Hugh Riordan, Idaho City, Idaho. Patent No. 834,079. , The invention relates to talking machines, and its object is to provide a new and improved speed indicator arranged to enable the user of the machine to quickly and conveniently adjust the speed of the motor and consequently that of the record, to insure playing of the record piece in proper time. A practical embodiment of the invention is represented in the acompanying drawings. Fig. 1 is a perspective view of the improvement as applied to a Victor talking machine, and Fig. 2 is a sectional side elevation of the same. Gka3iopho?;e. Joseph Sanders, Washington. D. C. Patent No. 834,326. This invention has reference to improvements in gramophones of the type wherein a tapering amplifying horn or a section thereof is mounted to swing over a record tablet only in a plane parallel thereto, and the object of the invention is to produce a means for mounting the soundbox whereby it may be carried by said tapering horn or horn section and have freedom of movement in a plane at right angles to the plane of movement of the said horn. The invention consists in providing a quadrantal neck for the sound-box, which neck is pivotally yoked to the taper section, so as to move in a curved path past the smaller or free end of said horn section to bring the stylus of the sound-box in engagement with a sound record groove or to bring the sound-box over onto the horn section in position for the insertion or removal of a stylus. To insure a sound-proof joint between the quadrantal neck or sound-box carrier and the tapering horn section, the meeting faces are curved on an arc the center of The following are some of the dealers handling the "Mira" Music Boxes: — LYON & HEALY, Chicago, III. SHERHTiAN, CLAY & CO., San Fran., Cal. SKERiVUnN, CLAY ,7, CO., Oakland, Cal. SHERnnaN, CLBY & CO., Seattle, Wash. OL!VER DITSON CC, Boston, IWass. .1. E. DITSOH & CO., Phiiadelphia, Pa. C. H. DITSON ? CO., New York. JOHN WaHnninKER, New York. JOHN WRNQWAK^R. Philadelphia, Pa. IVSACKIE e>i$\NO & ORGAN CO., Rochester, N. Y. DENTOH, COTTIER & DANIELS, Buffalo, N. S. HarvllLTON, Pittsburg, Pa. KRELL PIANO CO., Cincinnati. O. CCR^IK & ILEN*?OX, Indianapolis, Ind. FINZER & HAiyiMEL, Louisville, Kentucky. O. K. HOUCK PISNO CO., St. Louis, Mo. a. KOSPE. Jr.. Omaha, Neb. S. KSNN SONS & CO., Washington, D. C. Write for Catalogue and Prices J A C O T Music Box Co. 39 Union Sq., New York which is the pivot of the yoke joining the soundbox carrier to the horn section. Fig. 1 is a side elevation of a portion of a taper horn section and the quadrantal neck or sound-box carrier with the sound-box and a disc record tablet shown in dotted lines. Fig. 2 is a plan view of the structure shown in Fig. 1 with the sound-box shown in full lines .and the record disc omitted. Fig. 3 is a section on the line x x of Fig. 1, and Fig. 4 is a section on the line y y of Fig. 2. Phonograph. Ernst Sollors, Cologne, Germany. Patent No. 832,703. The present invention relates to an adjusting device for phonographs. In phonographs, especially such as are employed for purposes of dictation, a great drawback is found to be in that when the phonograph is started or stopped the machine is not immediately connected or disconnected. The phonograph will, moreover, invariably at the moment of the disconnecting make a little further forward motion, and in like manner when it is started again there will be necessary a certain movement of the phonograph before it again possesses the speed at which the sounds through the trumpet are clearly audible. Obviously this is a very disagreeable occurrence in the reproduction of dictated matter, because by stopping and starting some words are invariably lost. By means of the stopping and starting device forming the subject of this application this drawback is overcome, inasmuch as the phonograph, when the machine is stopped, automatically moves a little backward, so that when it is started again the sounds which would otherwise be lost become audible, and under certain circumstances also the last words previously heard are repeated. The device is preferably so arranged that the controHing lever of the driving motor of the phonograph at the moment of stoppage releases a catch acting upon the controlling device, whereupon this latter starts the second motor or reverses the original driving motor. Moreover, the stopping of the controlling device is effected either by the automatic engagement of the catch or by the ruunning down of the controlling device itself. Any suitable mechanism may be employed as a controMing device, and as the simplest thereof may be mentioned a clockwork mechanism which puts the second motor in operation during the working period or reverses the driving motor or drives itself directly by mechanical means. The clockwork must be arranged automatically to put itself out of gear after a given time and to stop the second motor or the reversed motor. Reference is had to the accompanying drawings, in which a suitable device of this kind is illustrated, by way of example, in Fig. 1 in front elevation, and in Figs. 2 and 3 in side elevatioji. DiAPHRAGjr FOR Tr.\NSMITTING SoUIv^D WEAVES.