US806806A - Phonograph. - Google Patents

Description

No. 806,806. PATENTED DEC. 12, 1905. W. HAVERMAN.

PHONOGRAPH. APPLICATION FILED MAY 15. 1905.

UNITED STATES PATENT OFFICE WILLIAM HAVERMAN, OF CLEVELAND, OHIO.

PHONOGRA PH.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed May 15, 1905. Serial No. 260.390.

T aZZ whom it may concern.-

Be it known that I, WILLIAM HAVERMAN, a citizen of the United States, residing at Cleveland, in the county of Ouyahoga and State of Ohio, have invented a certain new and useful Improvement in Phonographs, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

The object of this invention is to provide a phonograph which shall give a very large volume of sound and shall direct the sound to dilferent parts of the room, so that the phonograph may better serve, for example, to entertain an audience or furnish music for dancing.

To this end I have devised a phonograph having a plurality of reproducers associated with a plurality of horns and all operating from a single stylus. By this means the volume of sound is very greatly increased and it may be directed to several points, as desired. The drawings clearly illustrate my invention.

Figure 1 is a perspective view of the phonograph complete. Fig. 2 is a side elevation of the reproducer, together with a horn and its support. Fig. 3 is a side elevation, partly cross-sectional, of my reproducer, having two reproducing-disks. Fig. 4 is a bottom view of the same. Fig. 5 is a view showing the attachment of the reproducer to the supporting-arm.

In the drawings, A represents the box of an ordinary-phonograph, on the top of which is rotatably mounted the record, which may be a disk B. The usual crank O and other usual appurtenances may be mounted on the box. Carried by the box also is a supportingbracket E. At the outer end of this bracket is pivoted an arm F,- which at its inner end carries the reproducer. The arm F is pivoted in a clip or clevis which is swiveled in the support E.

The reproducer shown comprises a multiple sound-box H, carrying two diaphragms J and two exit-tubes it near the centers of these dia-' phragms. Two horns .K rest near their outer ends on a yoke-piece L, carried by the arm F. The inner ends of these horns are connected with the tubes it by means of flexible elbows P.

Between the tubes it of the reproducer is a shank portion h of the sound-box H, which may be movably held to the arm F by a thumbnut Q, which clamps it into a fork carried by the arm. On the under side of this shank 7b is a recess in which is set and held a light bar N. This bar is of light enough construction to be bent out of its position slightly; but it is preferably not light enough to constitute a flexible leaf-spring in the ordinary sense. The bar N, as shown, is round where it is clamped in the opening, and beneath this it is flattened at n. Beneath the flattened portion the bar carries a head 02, .into which is set the stylus-pointn The point is clamped in place by a set-screw n Extending from the head n to the centers of thetwo diaphragms J are pieces of metal n which may be of steel about the size of No. 16 or No. 18 Wire. As shown, these two pieces of metal 12 after leaving the head pass outwardly a short distance and then are bent toward the disks and then are turned across them and finally near their ends are turned upward to the diaphragms and suitably secured thereto. This course of these connecting-rods o has been found in practice to be very efficient; but some other shape may answer as well.

By means of two disks the vibration of the stylus-point is caused to produce twice as much sound, and by having two horns this sound is employed to better advantage, since it is directed over a greater area. I do not intend to limit myself herein to the employment of just two reproducers and horns or the exact arrangement of parts shown, for it is evident that by a simple extension of my mechanism the single stylus could be made to vibrate more than two diaphragms, the sound of which could be carried by a corresponding number of horns. Changes in construction and mechanical modifications will also occur to those skilled in this art, and these are included within my invention.

Having thus described my invention, I claim.

1. In a phonograph, the combination, with means for rotating the record, of a pair of resecured, a support on said arm for horns, and a connection leading from such support to the a plurality of horns resting on said support center of each diaphragm, and a stylus carand connected at their small ends with the ried by the support. tubular extensions of the sound-box. In testimony whereof I hereunto afiix my 5 In a phonolgraph, in combination, a pifsignature in the presence of two witnesses. 5

ote arm. a mu tiple sound-box removab y clamped to the forward end of the arm, a plu- WILLIAM HAVERMAN' rality of diaphragms for said sound-box, a I/Vitnesses: stylus-support projecting downward from the ALBERT H. BATES,

IO sound-box between the diaphragms thereof, N. L. BRESNAU.

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