The talking machine world (Jan-Dec 1914)

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52 THE TALKING MACHINE WORLD. LATEST PATENTS RELATING TO TALKING MACHINES AND RECORDS (Special to The Talking Machine World.) Washington, D. C, February 8. — Phonograph Reproducer. — Achille Luciano, Bloomfield, N. J., assignor to the Nightingale Reproducer Co., Newark, N. J. PatenS No. 1,080,839. This invention relates to an improved gramophone reproducer and is of the type that is arranged with the. sound box vertical to the record and is adapted for use with its stylus projecting in substantially the same plane as the diaphragm and having its stylus adapted to be moved transversely by the groove so as to transmit its vibrations directely to the diaphragm. The reproducer comprises a sound box in which the diaphragm is mounted in any usual manner, the stylus rod being pivoted by means of a pivotal connection that permits a limited transverse movement at the pivotal point, the stylus rod thus rocking normally at its pivotal point, but yielding to an extent under undue strain in T a transvere direction. The invention also resides, in the stylus, which is mounted on the end of the rod, and which submits successive portions of its periphery to the groove whereby the groove is not subjected to undue wear and the friction is minimized, while the sound reproduction is not impaired. Fig. 1 is a front view of the improved stylus, and Fig. 2 is a vertical section of the same through the center, the pivotal post being shown in elevation. Disc Talking Machine. — Rezso Preszter, Budapest, Austria-Hungary. Patent No. 1,076,643. The object of this invention is to obviate the necessity of employing a trumpet with disc talking machines. It is well known that sound trumpets generally used affect the purity of the sound and make the machine more difficult to handle and to transport. It was already proposed to cover the trumpet of talking machines or to conduct it through the casing of the machine.. Thereby the trumpet was only disguised, but substantially maintained so that the sound effect was not improved by this way. As on the other hand the dimensions of the casing should not be increased too far, the dimensions of the trumpet were reduced, whereby the sound strength was decreased. But as the dimensions of the trumpet could not be decreased too far, the dimensions of the casing resulted larger than the usual casings of talking machines. This invention does away completely with the usual trumpets without increasing the usual dimensions of the casing. According to the disclosed embodiments of this invention the free space of the casing containing the gear is subdivided by means of resonance boards in a way to form laterally from the gear a sound chamber of substantially the shape of pyramid and to form adjacent resonance boxes. The annexed drawing shows as examples two embodiments of the invention. Fig. 1 is a diagrammatical vertical section of the machine according to line C — C of Fig. 2. Fig. 2 is a horizontal section according to -line E— F of Fig. 1 and Fig. 3 is a similar section of a modified form. Soundbox for Talking Machines. — Wilburn N. Dennison, Merchantville, N. J., assignor to the Victor Talking Machine Co., Camden, N. J. Patent No 1,084,319. This invention relates more particularly to pneumatic soundboxes for talking machines and includes improvements in which a valve is provided, the movable member of which is positioned within and very close to the soundbox casing so that the air passing through the valve is caught oi trapped between the movable member and the casing to cushion or balance the movable member. The main objects of this invention are : to provide in a pneumatic soundbox a valve having a movable member of delicate construction which will respond readily to the vibrations of the stylus bar and which will be cushioned or balanced by the air passing through the valve; to provide an improved mounting for the stylus bar and the movable member of the valve, whereby the valve may be adjusted with great accuracy and whereby the balancing effect of the air after it has passed through the valve will not be impaired ; to provide adjustable means for holding and tensioning the movable member upon its mounting ; to provide an improved form of opening through the valve to permit the air to pass freely therethrough. In the accompanying drawings, Figure 1 is a fragmentary front end view of a soundbox constructed in accordance with' this invention; Fig. ijw w -ft 2 a longitudinal section on line 2 — 2 of Fig. 1 ; Fig. 3 an enlargement of a portion of Fig. 2 ; Fig. 4 an enlarged fragmentary sectional view on line 1 — t of Fig. 1 ; Fig. 5 a fragmentary sectional view on line 5 — 5 of Fig. 3; Fig. 6 a fragmentary sectional view corresponding to Fig. 3 showing a modification of the invention; Fig. 7 a view corresponding to Fig. 1 of a modified form of this invention ; Fig. 8 a longitudinal section view taken on line 8 — 8 of Fig. 7, parts thereof being omitted; Fig. 9 an enlarged fragmentary longitudinal central sectional view of the soundbox shown in Figs. 7 and 8; Fig. 10 a transverse sectional view of the soundbox shown in Fig. 9; and Figs. 11 and 12 are enlarged fragmentary front and rear elevations respectively of the valve seat shown in Figs. 7 to 9. Soundbox and Reproduction Thereof. — Victor H: Emerson, New York, assignor to the American Graphophone Co., Bridgeport, Conn., Patent No. 1,084,415. This invention relates to sound record having laterally undulating record groove of substantially uniform depth, commonly known as "zigzag" records. The object of the invention is to produce a record of this type which will have improved acoustical qualities. Such "zigzag" records are commonly manufactured as discs with the record groove arranged spirally thereon, but they may also be made as cylinders carrying the record groove in a helical line around the cylinder: yet, for convenience of consideration, such record groove may be regarded as continuing in a straight line, with the lateral undulations on either side. The underlying thought of this invention is to provide a (zigzag) record groove of such character as to produce a duplication or immediate repetition of each impulse imparted to the reproducing stylus, so that theoretically there should be expected a sort of "echo" as it were; yet in actual practice no echo will be observed by the listener, but merelyincreased fulness or roundness of tone. This duplication or repetition is accomplished by making the original record by means of a recording stylus having its two oppositely extending recording edges disposed diagonally with respect to the direction of travel of the record groove (instead of transversely thereof as heretofore). As the result of this arrangement of one recording edge is slightly advanced in front of the other, and each concavity produced in one side wall of the record groove will have its complementary (and simultaneously produced ) convexity located diagonally therefrom in the opposite wall of the groove (instead of directly across therefrom). This invention, then, consists broadly in providing a diagonally disposed pair of oppositely facing recording edges for making the original sound groove; further, in the simultaneous production of diagonally disposed and complementary concavities and convexities corresponding to sound waves ; and also in a sound record having such diagonal arrangement of its complementary concavities and convexities. This invention will be best understood by reference to the annexed drawings, which are on a greatly exaggerated scale, to illustrate the same diagrammatically. In these drawings : Fig. 1 represents conventionally a plan of a portion of a flat record tablet having an ordinary zigzag record groove, and indicating in cross section an ordinary recording stylus. Fig. 2 is a similar view, indicating the new record groove, and indicating in cross-section the new recording stylus ; and Fig. 3 is a horizontal section, on a still larger scale, of the stylus. Clariifying Attachment for Talking Machines.— Walter J. Burchett, East Orange, N. J., assignor by mesne assignment to the Masterphone Corporation, New York. Patent No. 1,084,570. This invention relates to clarifying attachments for talking machines, and constitutes an improvement on the general type of 'apparatus illustrated in the pending application of Matthew B. Claussen, Serial No. 779,004, renewed July 14, 1913. This object is the provision of a simple, inexpensive and durable attachment which can be quickly and easily applied to or removed from the reproducer of a talking machine, particularly one of the disc type, which will increase the volume of sound, clarify the tone, and enable a needle of small diameter to be used in sound reproduction, thereby increasing the life of the record, and these objects are accomplished by substituting a less rigid connection between the needle of the standard talking machine reproducer, and trie thin, freely vibrating sound amplifying body or disc of the said Claussen application than is employed in the specific form of construction illustrated in said Claussen application, and supplementing the engagement between the needle and disc by a second, elastic connection between other parts of the reproducer and the disc, whereby the disc is held against the needle with sufficient firmness to absorb the vibrations thereof when the reproducer is in operation, but may yet be easily removed from contact with the needle (when the latter is to be removed from the reproducer), without entirely disconnecting the disc from the reproducer as a whole