The talking machine world (July-Dec 1924)

216 THE TALKING MACHINE WORLD November 15, 1924 LATEST PATENTS RELATING Washington, D. C, November 8. — Collapsible Horn. Frank Minutillo, New York. Patent No. 1,509,763. This invention relates more especially to collapsible horns and the object is to afford a ,means for extending and opening the horn or collapsing and storing the same within a box or cabinet, and in connection with a graphophone, so that when the containing box is closed and the device is inoperative the horn, made of telescoping sections, is collapsed. But as the lid of said box is raised certain novel mechanism automatically connects the sections and elongates the horn for the amplification of the sound. Figure 1 is a side view of the improved horn and its operating mechanism. Fig. 2 is a front view of the same. Fig. 3 is a fragmentary sectional view. Fig. 4 is a side view of the cabinet open with modified mechanism. Fig. 5 is a similar view with the cabinet closed and partly in section. Fig. 6 is a detailed sectional view. Amplifier. Henry K. Sandell, Chicago, 111. Patent No. 1,509,567. The present invention relates to improvements in amplifying devices and more particularly in amplifiers intended for use in connection with vibrating diaphragms, such as those of phonograph sound boxes, etc. Figure 1 is a vertical section view through an amplifier embodying the invention. Fig. 2 is a horizontal view on the line 2—2 of Fig. 1. In accordance with the present invention, the amplifier is constructed in such a manner as to substantially eliminate resonance and prevent the production of vibration of the amplifier itself and resultant interference with the amplification and propagation of the sound waves which it is desired to amplify. Turn-table for Phonographs. Ray B. Whitman, Bridgeport, Conn., assignor to the Columbia Phonograph Co., Inc., same place. Patent No 1,508,632. This invention has for an object to provide a turn-table for phonographs which may be made from sheet metal, and which may be conveniently pressed to shape and formed by a minimum of simple manufacturing operations. Another object is to provide a turn-table, which will possess the combined characteristics of lightness, strength, and rigidity, and in which all tendency to warp or bend, due to strains, atmospheric conditions, or other causes, is entirely eliminated. Still another object is to so strengthen and reinforce the turn-table by means of ribs formed integral with the sheet metal structure as to re LESLEY'S PATCHING VARNISH DrlM In 10 arcondi: Howl without ihowlng ■ lip: miking ■ n Invliiblc and prrmanrnt repair SF.NII $2. HO V. 8. A. tor tur No. 24 Tourh Up Outfit, comlitlng of I pint varnlih act of ttalm. pollih and instruction!. Parcel Poit Prrpald to Any Country I.ealry'a Chemical Co. Indianapolis, Ind. sist strains along all diameters and chords of the turn-table. A further object is to provide improved means for securely attaching the fabric covering to the upper surface by efficient manufacturing methods, and to enclose the edge of the covering, so that it will be protected against wear and detachment due to rough handling. To this end, an improved form of flanged strengtheningrim is provided, which, in addition to its function of strengthening the turn-table and maintaining its flat disc-form, encloses and protects the edge of the fabric covering. A still further object is to prevent the transmission through the turn-table of sound generated at the record, and to eliminate all extraneous vibrations; this, in order that proper sound reproduction may obtain. In the drawings — Figure 1 is a plan view of a turn-table, according to one embodiment of the invention, a portion of the fabric covering being removed to clearly illustrate the body of the turn-table; Fig 2 is a vertical sectional view of same, taken along the irregular line 2—2 of Fig. 1; Fig. 3 is an enlarged detail sectional view of the rim portion of the turn-table, and showing the same partially bent to shape, this being the first formative step; Fig. 4 is a similar view, and showing the rim-flange completed, or after the final formative step; Fig. 5 is a similar view, showing the fabric covering finally positioned within the rim-flange; Fig. 6 is a fragmentary plan view, showing the first formative step in constructing the turn-table plate-portion; Fig. 7 is a sectional view thereof, taken along the diameter 7 — T of Fig. 6; Fig. 8 is a fragmentary plan view, showing the second formative step; Fig. 9 is a sectional view thereof, taken along the irregular line 9—9 of Fig. 8; Fig. 10 is a fragmentary plan view, showing the third formative step, in which the center-bearing, for engaging the turn-table spindle, is attached; Fig. 11 is a sectional view thereof, taken along the irregular line 11—11 of Fig. 10; Fig. 12 is a plan view of the completed turntable with the fabric covering attached; Fig. 13 is a sectional view along the line 13 — 13 of Fig. 1 ; and Fig 14 is a sectional view along the line 14—14 of Fig. 1. Phonograph Attachment. Thomas H. Campbell, Temple, Texas. Patent No. 1,509,540. This invention relates to an attachment for phonographs and more particularly to a tone modifier to be secured to the needle bar of a phonograph sound box or reproducer whereby the transmitted vibrations are affected and the tone produced modified. It is the general object of the invention to provide a simple and serviceable tone modifier for a phonograph. In the preferred form of the invention the tone modifier is formed of a block, preferably of metal. One or more grooves arc formed in the block, which grooves are adapted to fit over and engage the needle bar of an ordinary reproducer or sound box. Each groove in the tone modifier block is of irregular shape, preferably curved, so that when the groove is fitted over the needle bar the latter will be slightly deflected and the tone modifier will be frictionally held thereon. Figure 1 is a front elevation of a sound box or reproducer having a tone modifier applied to the needle bar. Fig. 2 is a side elevation of the parts shown in Fig. 1, a part being broken away to show the diaphragm and adjacent end of the needle bar. Fig. 3 is a perspective view s%2 of a tone modifier showing somewhat diagrammatically a fragment of a needle bar in place. Phonograph. George B. Burch, New York; assignor to Leslie Stevens, Glen Ridge, N. J. Patent No. 1,506,160. This invention relates to a new and useful improvement in phonographs and the object is to provide a simple device of this class which will be simple in construction and accurate and reliable in operation. Figure 1 is a sectional view of a structure embodying the invention; Fig. 2 is a sectional view of a diaphragm; Fig. 3 is a view, partially in section, showing the needle and some attached and connected parts. Repeating Device for Phonographs. Robert W. Nicholls, Palisades Park, N. J., assignor to the Gold Seal Co., same place. Patent No. 1,510,241. This invention relates to repeating devices for phonographs. The object of the invention is 5f& "V^ to provide a self-contained device of this class which can be used on a phonograph with certainty and convenience and without any change or modification in the phonograph. Figure 1 is a perspective view of one embodiment of the invention, a portion of a phonograph of the disc type, being shown in dotted lines. Fig. 2 is an enlarged detailed view of a portion of the apparatus. Fig. 3 is a sectional view, taken on the line 3 — 3 of Fig. 2, looking in the direction of the arrows. REPAIRS All Makes of Talking Machine* Repaired Promptly and Efficiently REPAIR PARTS FOR ALL MACHINES ANDREW H. DODIN 28 Sixth Avenue New York TELEPHONE. SPRING 1194