US1733446A - Sound-reproducing machine - Google Patents

Description

Oct. 29, 1929. w. A. CANDLISH ET AL SOUND-REPRODUCING MACHiNE Filed Jan. 22. 1926 FIG.3

2d EVENTORS W ATTORNIEY- Patented Oct. 29, 1929 UNITED STATES PATENT OFFICE WILLIAM ARTHUR CANDLISH AND ERNEST HENRY SCHLEIFFERS, OF MONTREAL,

QUEBEC, CANADA SOUND-REPRODUCING MACHINE Application filed January 22, 1926.

The invention relates to a sound reproducing machine, as described in the present specification and illustrated in the accompanying drawings that form part of the same.

The invention consists essentially of the novel features of construction pointed out broadly and specifically in the claims for novclty following a description containing an ex planation in detail of an acceptable formof the invention.

The objects of the invention are to soften and clarify the sounds reproduced from records through the instrumentality of a mechanical device designed for that purpose;

to direct the sound, so that the distribution of the same shall lose the projectile force that tends towards harshness and the addition of the noise of the mechanical forces used in the reproduction; to accomplish these purposes without unduly increasing the cost of the instrument; to eliminate as far as seems possible the grating effect of the reproducing needle; to distinguish sharply the shades of the tones and thereby insure a true rendering of the piece or other entertainment; and generally to provide an ellicient and reliable machine.

In the drawings, Figure 1 is a vertical sectional view of the machine disclosing the 30 sounding board.

Figure 2 is a vertical section of the upper portion of the cabinet at right angles to the section illustrated in Figure 1.

Figure 3 is an enlarged cross sectional View K through the sound chamber and board.

Figure 4 is a perspective view of the cabinet complete.

Figure 5 is a cross sectional view of the cabinet showing a top view of the sound cham ber.

Figure 6 is a perspective view of the sound chamber.

Figure 7 is a sectional plan view of the having the four walls 30, 31, 82 and 83 and the Serial No. 83,084.

. with said walls to the said outlets, the top 18 of said chamber being formed likewise and .60 having the central inlet 19 over the apex 16 to receive the tubular sound conveyor 20 from the tone arm 21, which carries the sound box 22 and needle 28 operating on the record sup ported by the turn table 24 driven by the'motor 25.

The sound deflecting chamber 11 is sup ported on the shelf 26 in the centre thereof and from each-of the angles formed by the converging walls 17 the partitions 27 extend to the corners of the shelf 26, each of said partitions rising in a gentle curve from the walls 17 to the outer ends 28, which is in close engagement with the corners of the cabinet 29 sound egress openings 34 in each of the four walls.

The sounding boards 35, 36, 37 and 38 form the top of the sound chamber 39 and flare outwardly from the angles of the top 18 and extend in gentle curves to the walls of the cabinet, being secured on their undersides to the partitions 27 and at their outer edges to the cabinet walls, while their inner portions cover the projecting outlet portions of the sound .85 deflecting chamber 11, thus dividing the sound chamber 39 into delivery compartments 40 having the bell eifect in swelling the sounds.

In Figure 8 hinged doors 41 are applied to the outlets 12, 13, 14 and 15 and these are operated by the light chains 42 and 48, connected to the buttons 44 and 45, which are pulled by hand'of a human being, the use of these doors being entirely optional.

In the operation of this machine, the sounds transmitted from the sound box through the tone arm and tubular sound conveyor impinge on the deflecting board 10 being distr uted by the shelving surfaces and contracted 100 by the narrowing outlets to swell out in the sound chamber divisions and find egress through the openings 34. The actual conveyance of the sound from the sound box at the needle end of the tone arm is done in a con ventional manner and this invention has to do with the directing, the distribution and the swelling of the sounds, emanating from the original contact of the needle with the record and the mellowing of the sounds by the avoidance of obstructions and consequent eddies and swirls and also by the elimination of a bursting force adapted to carry with it mechanical sounds produced in the Working of the machine, yet naturally accelerating the delivery by the contraction and concentration of the sound waves Within the bell mouthed delivery divisions.

WVhat We claim is:

1. In sound reproducing machines, a cabinet having a plurality of sides and discharge openings, a compartment Within said cabinet and having delivery passages to said discharge openings, said compartment forming a sound deflecting chamber centrally situated and having converging Walls and graduated inclined surfaces from a common apex constituting said passages, a plurality of partitions continuing said passages, and extending outwardly from said converging walls and terminating in the corners of the cabinet, and a sound conveyer leading into said compartment for delivering the sound Waves into said sound deflecting chamber.

2. In a sound reproducing machine, a sound director comprising a centre piece sloping downwardly in several directions from an apex and terminating at the floor of said director and contained in a deflecting chamber having a central opening directly above said apex and adapted to be connected to a sound conveyer and a plurality of discharge openin s corresponding in number to the number of said slopes, a plurality of partitions diagonally arranged from the Walls of said chamber and extending to the corners of said flooring, top boards closing in the director beyond said chamber and a cabinet adapted to contain said sound director and a phonograph and having outlets through its several sides corresponding in number to the number of slopes of said centre piece.

3. In a sound reproducing machine, a sound director having a rectangular flooring and a central rising from said flooring in four different paths converging into a common apex, a closure for said centre piece having an opening immediately above said apex and four side openings, top boards rising from said closure and terminating above the edges of said flooring, diagonal partitions between said top boards and said flooring forming four deflecting chambers and a rectangular form of cabinet receiving said deflecting

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