US1437677A

US1437677A - Sound amplifier for talking machines

Info

Publication number: US1437677A
Application number: US525206A
Authority: US
Inventors: Prout Lena Belle
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-12-27
Filing date: 1921-12-27
Publication date: 1922-12-05
Anticipated expiration: 1939-12-05

Description

L. B. PROUT.

SOUND AMPLIFIER FOR TALKING MACHINES.

APPLICATION FILED DEC- 2?;1921- 1,437,677. Patented Dec. 5, 1922,

2 SHEETSSHEET l.

' L. B. PROUT.

SOUND AMPLIFIER FOR TALKING MACHINES.

APPLICATION FILED DEC. 27,1921. 1,437,677 Patented Dec. 5, 1922..

2 SHEETSSH EET 2.

1 Lazw! Baas Ema-r Patented Dec. 5, 1922.

LENA BELLE PROU'IL, OF MORLAND, KANSAS.

PATENT OFFICE.

SOUND AMPLIFIER FOR TALKING MACHINES.

Application filed December 27, .1921.

To all whom may concern Be it known that l, LENA BELLE PRoU'r (Mrs. James EAnNnsr Pnon'r), a citizen of the United States of America, residingat Morland, in the county of Graham and State of Kansas, have invented a new and useful Improvement in Sound Amplifiers for Talking Machines, of which the following is aspecification.

My invention is an improvement in those sound amplifiers for talking machines which are used in connection with sound recording and reproducing machines.

The object of my invention is to provide sound amplifiers for talking machines with an improved construction of lining which will eliminate all harsh, metallic and unnatural sounds which occur in existing types of sound amplifiersof sound recording and reproducing machines.

My invention consists in the novel features of construction of the lining of the sound amplifier for talking machines hereinafter described and claimed.

in order that my invention may be fully understood I will proceed to describe it in in which similar reference numerals indi- 'cate corresponding parts in the different views.

Figure l is a perspective view of a modern form of talking machine, the doors of the tone chamber being open and showing my improved sound amplifier located within the tone-chamber thereof;

Figure 2 is a vertical section taken on the line 2---@ of Figure 3 looking in the direction of the arrows.

Figure 3 is a horizontal section taken on the line 33 of Figure 2 looking in the direction of the arrows.

Figure 4 is a detail transverse section on a larger scale of my improved amplifier having layers of wood material arranged with the grain thereof crossed.

Figure 5 is a detail longitudinal section of the lining showing a modification in the construction of the extended covering for the solid layers.

1 represents a modern form of talking machine provided with a tone-chamber 2 within which is located my improved sound amplifier 3. This amplifier is of usual form having a neck 4, provided with a throat 5, leading to the body 6 having a fiaring mouth 7. It is to the construction of this ampli- Serial No. 525,206.

fier that my invention is directed arr plastic materials, or metal, or a combination of wood, plastic materials and metal, and layers of textile material, such as velvet or felt. 8 and 9 are layers of wood material arranged with the grain thereof crossed or other solid material, as above described and 10, 11 and 12 are layers of textile fahric which alternate with, are fitted closely to,

completely cover and separate the layersof solid material. One or more of these layers of solid material may be employed in making the structure. Two layers of solid material are shown in the present instance. 10 is the intermediate layer of textile fabric placed between the layers of solid material, and ll and 12 are respectively the inner and outer layers of textile fabric. 'The layers of solid material and the layers of textile fabric are secured together by suitable adhesive material. The outer layer 12' of textile fabric provides a textile surface to the amplifier between the amplifier and the tone-chamber.

The inner layer of textile fabric is extended beyond the forward end of the body of the amplifier and folded outwardly and then rearwardly to provide laps 13, which are turned back so as to occupy a position between the body of the amplifier and the tone chamber and spaced from the body so as to form pockets 14 for a padding 15, thus furnishing a padded cushion between the amplifier and the wall of the tone chamher. In a similar manner the rear end of the amplifier is cushioned by extending the inner layer of textile fabric upwardly through'the throat 5, above the neck 4 and folding it outwardly to provide laps 15 which are spaced from the top of the neck 4 and turned down so as to occupv a position over the neck 4 between the .neck 4 and the tone-'chamber'Q, and form pocket 16, for a padding 17 thus furnishing a cushion between the amplifier and the W ll f t tone-chamber at the top of the tone-chamber. In Fig. I have shown a modification in the form of the cushion lap 15 for the ends of the lining. The cushion-lap in this instance-is made of a separate piece of textile fabric folded into inverted U-shape in transverse section and thus provides a cap piece 18 forming a pocket 19 for apadding 20 to furnish a cushion between the neck of the amplifier and the top of the tone-chamber. 21 is an angular corner padding beneath and in rear of the inner end of the body of the amplifier and provides a supporting cushion and a spacing cushion at this lace and may be secured to the sound amp lfier by adhesive material so as to form a part of the amplifier. The inner layer 11 of textile fabric at the base of the throat of the neck of the amplifier is curved away from the cornerat the base of the neck to provide a triangular pocket 22 for a padding The direction of the sound currents 23. passingv through the throat and mouth of the amplifier are indicated by the large Winged arrows "shown in Figure, 2.- a

Having thus described my invention the following is What ll claim as new therein and desire to secure by Letters Patent:

1. A sound amplifier for talking machines comprising a layer of solid material, a layer of textile fabric fitting closely to and com letely covering the layer of solid material, extending around the forvgard end of the mea er"? of the amplifier and folded outwardly and rearWardly thereagainst so as to form a pocket and padding in said pocket providing a cushion for the amplifier.

3. A sound amplifier for talking machines comprising a layer of solid material forming the body, neck and throat of the amplifier, a layer of textile fabric, fitting closely so as to completely cover the laver of solid material extended beyond the upper end of" the neck of the amplifier so as to form a pocket and padding in said pocket providin a cushion on the top of the neck around the throat for the amplifier.

' 4. A sound amplifier for talking machines comprising a layer of solid material forming the body, neck'and throat of the amplifier,

a layer of textile fabric completely covering the layer of solid material, the layer of textile fabric beingcurved inwardly away from the corner of the throat forming a pocket, and adding located in said pocket.

LENA ELLE PROUT. (MRS. JAMES EARNEST PROUT).