The talking machine world (Jan-June 1919)

June 15, 1919 THE TALKING MACHINE WORLD 153 LATEST PATENTS RELATING TO TALKING MACHINES AND RECORDS Washington, D. C, June 8.— Needle Arm for Talking Machines. — Walter L. Eckhardt, Philadelphia, Pa. Patent No. 1,296,638. This invention has for its object to provide an improved construction of needle arm (stylus or needle support) for sound reproducing machines, including means for adjusting the stylus or needle with respect to said arm or support. A further object of the invention is to provide an improved construction of needle arm arid stylus or needle by the use of which a single stylus or needle of attenuated wire may be used a great many times for the reproduction of sounds for sound records without injury to said records and also by the use of which the sounds reproduced shall be more nearly like the original sounds impressed upon the record than heret6fore has been practicable. A still further object of the invention is to provide a needle arm or support by means of which an attenuated or fine wire employed as a stylus or needle may be rigidly and firmly held so as to prevent a vibration of the same independently of said needle arm or support. It is also an object of the invention to provide a needle arm having a fine or attenuated point adapted to enter the sound grooves upon a sound record whereby, if occasion should arise, the needle arm itself may be employed to co-operate directly with a sound record without or independently of the stylus or needle for the reproduction of sounds from said record. In the drawings Figure 1 is a side elevation of a sound box having secured thereon and in operative relation thereto a needle arm and stylus or needle embodying the invention, the said figure also showing a portion of a record in transverse section with which the end of the stylus or needle is in contact; Fig. 2 is a view in front elevation of said needle arm and stylus or needle separate from the sound box and enlarged; Fig. 3 is a view in side elevation of the same; Fig. 4 is a view showing a portion of said needle arm in longitudinal, section on the. line 4 — 4 of Fig. 2; Fig. 5 is a transverse sectional view taken on the line 5 — 5 of Fig. 2; Fig. 6 is a transverse sectional view taken on the line 6 — 6 of Fig. 2; and Fig. 7 is a longitudinal sectional view taken on the line 7 — 7 of Fig. 3 in a plant at right angles to that on which Fig. 4 is taken. Phonograph Reproducer. — Carl N. Moller, New York. Patent No. 1,296,833. This invention is a phonograph reproducer, and the object of the invention is to amplify the vibrations of the stylus bar in their transmission to the diaphragm. A further object of the invention is to provide a phonograph reproducer adapted to operate on records either of the hill and dale or lateral cut type. Speaking generally, the salient feature of the invention consists in an amplifier co-operating with the diaphragm and stylus bar, whereby the movements of the stylus bar are materially amplified prior to their transmission to the diaphragm, thereby increasing the degree of vibration of said diaphragm. From a. more specific standpoint, the invention may be said to consist in an amplifying connection intermediate the diaphragm operating end of the stylus bar and the diaphragm, whereby a relatively short travel of said end of the stylus bar is translated into a relatively greater movement of the diaphragm. In other words, the present invention embodies means, positioned intermediate the diaphragm operating end of the stylus bar and the diaphragm, whereby the vibrations received at said end of the stylus bar are transmitted to the diaphragm through said means which amplifies such vibrations and delivers them to the diaphragm in their thus amplified condition. A further feature of the invention resides in the mounting of the stylus bar for universal pivotal movement whereby the vibration of said stylus bar under the influence of either lateral cut or hill and dale records is automatically provided for, said universal connection performing the further function of compensating for the movements of the amplifying means. Figure 1 is a plan view of a reproducer embodying the present invention. Fig. 2 is a side elevation thereof, and Fig. 3 is a transverse section taken on line 3 — 3 of Fig. 1, Recorder and Reproducer for Talking Machines.— Loring L. Leeds, Short Hills, N. J., assignor to Frank M. Needham, Chicago, 111. Patent No. 1,296,975. This invention relates to the sound boxes of talking machines, and has for its object to improve the connection between the sound box and the bar or socket which supports the reproducing or recording stylus. The improved connection is of a very firm yet elastic character and insures a clear reproduction of sounds with a minimum of disturbing noises. A specific example of the invention is shown in the accompanying drawings, in which Figure 1 is a side elevation of a recorder or reproducer embodying the invention; Fig. 2 is a front view thereof; Fig. 3 is a partial vertical section on line 3 — 3 of Fig. 4; Fig. 4 is a partial vertical section on line 4 — 4 of Fig. 3; Fig. 5 is a front elevation and Fig. 6 is a side elevation of a block forming part of the invention; Fig. 7 is a face view, and Fig. 8 an edge view of a cup forming part of the invention. Turntable for Talking Machines.— John A. Davis, Boston, Mass. Patent No. 1,298,019. This invention has for its object a new and improved turntable for talking machines and particularly . for electrically operated machines, although it may be used with equal success on those which are mechanically operated. At the present time many talking machines are operated by electric motors the current for which is taken from the ordinary lighting circuit. This method of operation has certain obvious advantages, but serious difficulties have arisen, particularly as the result of the use of metallic turntables on which the records are placed. The noise of the driving mechanism is transmitted through the spindle to the metallic turntable, which being resonant tends to magnify it and distribute it, thus increasing the objectionable noise. The vibrations of the reso nant turntable are to some extent transmitted to the record and thus through the needle to the sound box, interfering with the production of the record and the purity of the tone therefrom and introducing extraneous noises into the sound reproduction. Furthermore, as electrically operated talking machines are arranged for connection with the ordinary lamp circuit which is commonly 110 or 220 volts and as there is always danger of a short circuit in the instrument, there is danger of an electric shock to any one touching a metallic turntable which is in electrical connection through the spindle with the other metallic parts of the instrument. There is also equal danger of fire from a short circuit. Accordingly the invention has for its object a new and improved turntable which overcomes tTie various objections previously mentioned. The turntable embodying the invention is miolded from a suitable insulating compound such, for instance, as one in which pulverized asbestos, mica, gum shellac, and asphaltum are ingredients. This material is plastic when heated and is capable of being molded under heavy pressure and on cooling is rigid, strong, hard and an insulator capable of withstanding a relatively high voltage. In the drawings Figure 1 is a top plan view of a turntable embodying the invention. Fig. 2 is a side elevation of the same; Fig. 3 is a section on line 3 — 3 of Fig. 1. Talking Machine.— Edward A. Eschinger, Philadelphia, Pa., assignor of one-half to J. C. Clemmer, same place. Patent No. 1,301,787. This invention relates to sound recording and reproducing machines, and particularly feed mechanism for sound boxes of such machines adjustable to automatically repeat their co-operation with a given sound record, at the will of the operator. In the drawings Figure 1 is a plan view of the Victor gramophone aforesaid having a convenient embodiment of the invention in connection therewith. Fig. 2 is a side elevation of said machine shown in Fig. 1. Fig. 3 is a full size plan view of the automatic feed mechanism indicated in Figs. 1 and 2, and Fig. 4 is a lefthand side elevation of said mechanism. Fig. 5 rjajir is a sectional view of said mechanism, taken on the line 5 in Fig. 3. Fig. 6 is a fragmentary sectional view, taken on the line 6 in Fig. 3. Talking Machine.— Edward A. Eschinger, Philadelphia, Pa., assignor of one-half to J. C. Clemmer, same place. Patent No. 1,301,786. This invention relates to sound recording and reproducing machines, and particularly feed mechanism for sound boxes of such machines adjustable to automatically repeat their co-operation with a given sound record, at the will of the operator. In the drawings Figure 1 is a plan view of the Victor gramophone aforesaid, having a convenient embodiment of the invention in connection therewith. Fig. 2 is a fragmentarj' ver{Continucd on page 154)