US1477614A

US1477614A - Amplifying device

Info

Publication number: US1477614A
Application number: US409136A
Authority: US
Inventors: Jacob H Weber
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-09-09
Filing date: 1920-09-09
Publication date: 1923-12-18
Anticipated expiration: 1940-12-18

Description

Dec. 18,1923.

J. H. WEBER AMPLIFYING nzvzcz I v Original Filed Sept; 9. 1920 I N VEN TOR.

W ATTORNEYJ Patented Dec. 18, 1923.

1 UNITED STATES JACOB H. WEBER, OF NEW YORK, N. Y.

AMPLIFYING DEVICE.

Application filed September 9, 1920. Serial No. 409,136.

To all whom it may concern.

Be it known that I, JACOB H. VVnnnn, a citizen of the United States, residing at city of New York, borough of Manhattan,

in the county and State of New York, have invented certain new and useful. Im proveinents in Amplifying Devices, of which the following is a full, clear, and exact description.

This invention relates to amplifying devices and particularly to those employed in sound reproducing machines wherein the sound waves set up by a vibrating medium are amplified before being discharged from the instrument. In talking machines, various sound boxes of the same type and man ufacture often produce effects on the same talking machine which are very noticeably different and are believed to be due to the particular overtones imparted to the sound waves by the sound box and the amplifier.

Thus if the overtones of both sound box and amplifier are the same or in harmony the effect will be highly pleasing but if not i in harmony the effect will be displeasing.

Sound boxes which have been made as nearly alike as human skill can make them, will vary in the tonal effect which they will impart to the sound waves set up therein.

Therefore the amplifier for a selected sound box should be able to impart to the sound waves tones in harmony with those produced by the sound box so as to provide comparatively strong resultant tones which add fullness and richness to the sound waves emitted by the instrument.

An object of my invention is to provide an amplifier device which can be constructed to emit desired tones in harmony with those of a given sound box. A further object is to provide an amplifying device in which the quality of sound is improved and capable of variation to accord with changes in sound boxes. A further object is to provide means for accomplishing the above objects and at the same time form eflicient supporting means for the amplifier horn. Other objects and advantages will be apparent from the following description and the novel features of my invention will be particularly pointed out in claims.

My invention contemplates the provision of musical instrument strings connected between the cabinet or other support and the amplifier horn to act as a support for the latter and impart to the sound emitted by the amplifier horn the desired tones. The invention further comprises certain details of construction which will be hereinafter more fully described in connection with the accompanying drawings in which:

Fig. 1 is a sectional elevation of a talking machine in which my invention is embodied.

Fig. 2 is a perspective of the amplifier horn and supporting frame, and

Fig. 3 is a front elevation of the amplifier-horn and frame.

In the illustrated embodiment of my invention I provide a cabinet 1 having in the front wall thereof a sound emitting aperture 2, and in the upper portion of the cabinet I provide the usual motor board 3. A motor at of suitable construction is suspended from the underside of the motor board and is adapted to rotate a turn table 5 and record 6 thereon when the table is released in the usual manner. A sound box 7 is mounted upon the end of a tone arm 8 also supported upon the motor board to permit movement of the sound box toward and from the record and also radially thereof. Anamplifier horn 9 is supported at its small end from the motor board co-axially with the emitting end of the tone arm and has its large or discharge end in alignment with the aperture 2 of the cabinet. A frame 10 is secured. to the interior of the cabinet behind and inalignment with the aperture 2, and is adapted to receive and support the discharge end of the amplifier. Between the frame 10 and the walls of the amplifier horn at the discharge end I connect musical instrument strings 11 which are preferably woven back and forth between the frame and the walls of the amplifier horn so as to support the large end of the horn in spaced relation to the frame on all sides and in proper alignment with the sound emitting opening 2 of the cabinet.

I have found that these. musical instrument strings will impart tothe sound waves emitted from the amplifier horn certain tones which vary with the character of the string employed. For example, a G string will impart certain tones to the emitted sound, and an A string will impart certain other tones, etc. The tones imparted to reproduced sound waves in different sound boxes of the same make vary considerably, and I therefore select the particula t g as the supporting means for the amplifier horn which will impart to the emitted sound Waves those tones which will be in harmony with those produced by the sound box to be employed with the machine. Where the tones imparted to the sound Waves by the sound box and amplifier horn arein harmony, the resultant tones will be strong and I have found that this adds considerable fullness and richness to the resultant sound Waves or tones. T he strings not only have their effect upon the sound Waves emitted from the instrument but they serve as Well as a very desirable means of supporting the amplifier at its discharge end from the cabinet, and thus have a double function. As many of these musical instrument strings may be usedas necessary to'firmly support thelarge end otthe amplifier or to intensify the tones which they impart to the sound Waves.

It Will be obvious that various changes in the detailsherein described'and illustrated may be made Within the principle and scope of my invention.

1 claim:

1. A. sound amplifying device comprising a support, an amplifier horn arranged in spaces relation to the support, and musical instrument strings connected between the support and amplifier horn for supporting the latter from the support.

2. A sound amplifying device comprising a support, an amplifier horn, and musical instrument strings Woven between the sup port and amplifier horn for supporting the latter from the support and in spaced relation thereto.

3. A sound amplifying device comprising a cabinet having an aperture, an amplifier horn Within the cabinet with its discharge end adjacent the aperture and musical instrument strings connected between the Walls of the amplifier horn and the cabinet for supporting the discharge end at the amplifier horn in spaced relation to the cabinet.

4:. A sound amplifying device comprising a cabinet having an aperture, an anpliiier horn Within the cabinet With its discharge end acent the aperture, and musical instrument strings WOVGII back and forth between the Walls of the amplifier horn and the cabinet for supporting the discharge end of the amplifier horn in spaced relation to the cabinet.

in Witness whereof, I scribe my signature.

JACOB H. WEBER.

hereunto sub-