US1557998A

US1557998A - Sound-reproducing instrument

Info

Publication number: US1557998A
Application number: US482902A
Authority: US
Inventors: Russell M Everett
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-07-07
Filing date: 1921-07-07
Publication date: 1925-10-20
Anticipated expiration: 1942-10-20

Description

Oct- 20,1925.

R. M. EVERETT SOUND REPRODUCING INSTRUMENT Filed July '7. 1921 4 Sheets-Sheet 1.

IN V EN TOR.

RUSSELL M. EVERETT A TTORNEYS.

Oct. 20,1925. 1,557,998

R. M. EVERETT S OUND REPRODUC ING I NSTRU HE NT Filed July 7. 1921 I 4 smu -sum 2 I O Q j l w 23' j '24 I INVENTOR RUSSELL MlNERE'YT A TTORNEY S Oct. 20, 1925. 1,557,998

R. M. EVERETT SOUND REPRODUCING INSTRUMENT Filed July 7. 1921 4 Sheets-Sheet 4 Russfiu. MEVBRE'H I M A TTORNEVS modified construction with Patented Oct. 20, 1925.

UNITED sT TEs RUSSELL M. EVERETT, or BLOOMIIELD, NEW JERSEY.

SOUND-REPRODUCING INSTRUMENT.

Applicationfilled July 7, 1921. Serial No. 482,902.

To all whom 2'25 may concern:

Be it known that I, RUSSELL M. EVERETT, a citizen of the United States, and a resident of Bloomfield, in the county of Essex and State of New Jersey, have inventednew and useful Improvements in Sound- Reprodu'cing Instruments, of which the following is a specification.

This invention relates to that class of sound reproducing instruments in which the sound is discharged annularly around the reproducing mechanism or in which said mechanism is located within the chamber or passage of the discharge means, and the objects of the present invention are to apply such improvements to a sound amplifying horn to obtain a maximum utilization of space for sound amplification and at the same time enable the instrument to be of small size; to mount the sound reproducing mechanism, including the motor. turntable, sound box and tone arm, inside of a horn; to space such mechanism from the walls of a horn other to facilitate access to the sound reproducing mechanism: to divide an amplifying horn into longitudinal sections so as to provide access to sound reproducing mechanism within the same; to divide such a horn axially of itself; to attach said movable part to the cover of the casing of the instrument so that it opens andcloses with said cover; to thus utilize to the maximum the space in the casing for the sound discharge or amplifying horn; to secure a large discharge or amplifying-horn with respect to the casing and thus obtain a more perfect reproduction of sound, and to secure other advantages and results as may be brought out by the following description.

Figure 1 is a central vertical section from front to rear of a sound reproducing instrument embodying my improvements, as on line 1--1 of Figure 2, part of the tone arm and all of the rest of the reproducing mech-. anism being shown in elevation;

Figure 2 is a plan of the instrument with the cover removed; I

Figure 3 is a sectional view. from the front, taken on line 3-3-of Figure 1;

Figureet is a front elevation; V x

- Figure 5 shows in plan aninstrument of the cover removed and the horn and its support shown in section on line 5-5 of Fi re 6;

Figure 6 is a diagonal vertical section on line 66 of Figure 5, the horn support, part of the tone arm and all the rest of the sound reproducing mechanism being shown in elevation;

Figure 7 is a vertical sectional view of a still further modified construction, in which a horn is utilized as a casing for the sound reproducing mechanism, and

Figure 8 shows the same in front elevation.

In the specific embodiment of the invention shown in Figures 1-4, the reference numeral 1 indicates the body of box part of a casing and 2 acover hinged thereto as at 3, said body portion 1 and cover 2 being shown of substantially equal dimensions or capacity, although they might difier. as desired to meet various conditions. Mounted in the casing thus formed is a horn 4 which has its mouth or bell 5 facing one vertical side, of the casing and its throat or small end 6 disposed at the middle of the opposite upright wall of the casing. This horn is divided into upper and lower sections, 7 and 8, the division being upon the plane of division between the box'and cover portions of the casing, so that the horn is divided along a plane of its longitudinal axial line. The two sections 7 and 8 are secured respectively to the cover and box of the casing,

as by means of supporting ribs 9, and 1t will'be understood that when closed they meet edge to edge so as toform a single horn with a smooth interior wall.

W'ithi'n the horn is mounted a motor 10 supported by legs 11 which are here shown as extending through the wall of the horn or lower section 8 thereof, and resting upon the floor of the casing, and a spindle or shaft 12 extends upward from the motor and supports the usual turntable 13 upom which a record 14'is shown. A known type of sound box or reproducer 15 is shown in engagement witlnsaid record, and from said sound box a tone-arm 16 extends rearward and opens into the throat or small end 6 of and in such relation thereto that the sound from the tone arm is deflected laterally in every direction and discharged by the horn Preferably the small end of the horn is closed and its inner surface and the adjacent end of the tone arm .are so shaped as to cooperate in the passage or sound from the tone arm to the horn and its discharge therefrom, as by forming an'inwardly projecting apex 18 on the horn and flaring the end of the tone arm passage as at 19. Any other means for conducting the sound from the tone arm to the horn can he used, however.

The tone arm 16 is shown swiveled upon a pivot 20 substantially perpendicular to the plane of the turntable, so as to allow the tone arm to swing across the same as is usual,

from one of the horn supporting ribs 9 and extending through both walls of the outwardly flared end 19 of the tone arm. Thetone arm is also shown as inclined downwardly from "thesound box to its open end, in order to bring the sound reproducing mechanism nearer to the center of th casing vertically, although in some. construction such inclination is not necessary, as will be hereinafter more fully brought out.

The front upright wall of the casing, opposite the bell or mouth of the horn, is shown provided in the cover 2 with oppositely opening

doors

21 and 22 and in the box or body 1 of the casing with oppositely opening

doors

23 and 24, which may be used to vary the discharge of sound as desired, it being understood that the cover is opened to put on and take off records and is closed while the instrument is playing. I have shown hooks 25 for fastening the cover in closed position, so that the casing can be carried about or transported, but any other suitable fastening or locking means can be employed as desired.

In Figures 5 and 6 I have illustrated a construction in which a horn 26 is arrangeddiagonally of a casing 27, so as to better utilize the space therein and secure a. greater compactness. In this construction the sound is discharged through two adjacent upright side walls of the casing, and preferably doors 28, 29 are formed in the upper or cover section 32, and

similar doors

30, 31 in the lower or box portion 33 of the body. The horn 26 is shown short enough so that it provides access through its bell or mouth for putting records 34 on the turntable 35, and thus it can be in one piece instead of divided as described in connection with Figures 1-4 inclusive. The coyer 32 is thus free from the horn and yet enables the casing to enclose it when the instrument is not in use, and if desired said cover can be left open or raised while the instrument is being played. In fact, under some conditions the

doors

28, 29, or 30, 31,,or all of them, can be omitted and the sound reach the and I have shown said pivot as projecting listener from beneath the-raised cover 32 of the casing.

In these Figures 5 and 6 I have also showna tone arm 36 which is fixed with respect to the horn 26, the whole being pivoted at the small end of the horn, as by ears 37 receiving a pivot 38 substantially perpendicular to the turntable 35 and supported in any suitable manner, as by a post 39 on the bottom of the casing. The horn thus swings with the tone arm, and if necessary its wall can be slot-ted, as at 40, to clear the supports 41 of the motor 42, which supports are shown extending upward from the base of the casing. The tone arm 36 is shown oblique to the longitudinal axial line of the horn, in plan view, (see Fig. 5), and its end at the small end of the horn is shown flaring and secured to the horn 26in any suitable manner. as by the posts 43 which are shown extending to the walls 44 of the flaring portion of the tone arm.

In Figures 7 and 8, I have shown an amplifying member or horn 45 which itself serves as a casing for the sound reproducing mechanism, being closed at its small end 46 and provided at -its bell or mouth with doors 47, 48 which can be closed entirely or left open as desired to vary the loudness of the reproduced sound. The horn is mounted in any suitable manner, as by means of the base 49 shown. and the horn is shown with sufficiently thick and strong walls to serve as a casing and support the doors 47 48 at their points of hinging. Within the chamber of the horn a motor 50 is carried by supports 51 extending to the sides and bottom of the wall of the horn, said motor providing a shaft 52 which carries a turntable 53 for a record 54. I have shown a conventional sound box in engagement with said record. and from said sound box 55 a tone arm 56 extends rearward ,to the interior end of the horn where it is swiveled upon a pivot 57 substantially perpendicular to the plane ofthe turntable and having for its

opposite ends bearings

58, 59 mounted upon the wall of the horn.

It will be understood that many detail modifications may be made in the manufacture of my improvements. by those skilled in the art, without departing from the spirit and scope of the invention. Furthermore, the invention is susceptible for use with other. types of sound reproducing mechanism, for instance, radio receiving apparatus. Therefore I do not wish to be understood as limiting myself except as required by the following claims when construed in the light of the prior art.

Having thus described the invention what I claim is:

1. In a sound reproducing instrument, a casing formed of two hingedly connected sections one of which servesas a cover for the other and each of which includes a sound amplifying horn section whereb mechanism within said casing to direct v mechanism, said soun sound waves into the small end of said horn.

2. A sound reproduclng instrument, comprising a sound amplifying horn divided longitudinally into two complemental hing- .edly connected sections, and sound reproducing mechanism mounted within said horn so that the horn serves as a caslng for said mechanism and fine of said sections serves as a cover to ermit access to said re roducing mechanism being mounted to direct sound waves into the small end of said horn so that the sound is discharged by the horn annularly around said mechanism.

3. A sound reproducing instrument, including a sound amplifying horn, and a sound reproducing mechanism including a motor, turntable, sound reproducer and tone arm mounted within said horn with said turntable substantially parallel with an axial plane of said horn,said sound reproducer being arranged to discharge sound waves into the small end of-s'aid horn.

4.- A sound reproducing instrument, comprising a casing having a horn-like chamber open at its large or bell end, and sound reproducing mechanism mounted wholly within said horn-like chamber to direct sound wavesinto the small end thereof so that said chamber discharges the sound annularly around said mechanism through,

said open end of the chamber.

5. A sound reproducing instrument, co 1 prising a casing having a' horn-likechamb open at its large or hell end, and sound reproducing mechanism including a motor, turntable, sound reproducer and tone arm -mounted wholly within said chamber with said turntable substantially parallel to an axial plane of said horn-like chamber, said tone arm directing sound waves into the small end of said chamber so that said chamber discharges the sound annularly around said mechanism through said open end of the-chamber.

' RUSSELL M. EVERETT.