US711974A - Sound-concentrator. - Google Patents

Description

N0. 7|I,974. Patented Oct. 28, I902.

C. L. HYDE.

SOUND CONCENTRATOR.

(Application filed Doc. 19. 1901.

UNITED STATES PATENT OFFICE.

CHARLES LIVINGSTON IIYDE, OF TUXEDO PARK, NEW YORK, ASSIGNOR, BY

MESNE ASSIGNMENTS, TO IIUTCHISON ACOUSTIC COMPANY, A CORPORA- TION OF NEW JERSEY.

SOUND-CONCENTRATOR.

SPECIFICATION forming part of Letters Patent No. 711,974, dated October 28, 1902.

Application filed December 12, 1901. Serial No. 85,625. (No model.)

To all whom, it may concern: degrees, and thus form a right angle with Be it known that I, CHARLES LIVINGSTON each other. Likewise in the form shown in HYDE, a citizen of the United States, residing Fig 2 the semicircle formed by the curve of at Tuxedo Park, in the county of Orange and the sides and cone have chords forming a 5 State of New York, haveinvented certain new right angle between them. Still further and 55 and useful Improvements in Sound-Concenobvious modifications of the two forms shown trators, of which the following is a full, clear, would be elongations of the straight cone and and exact description. sides of Fig. 1 until they met and the inter- This invention pertains to sound concenruption of the middle portion of the semicirtrating and focusing apparatus designed to cle of Fig. 2 bya plane surface at right angles 60 direct sound-waves to the most sensitive area to the axis, the general object being to proof a diaphragm capable of being vibrated vide surfaces which will deflect sound from thereby. the outer corners of the concentrator radially The essential feature of my invention is a inward and thence outward or backward subsubstantially cup-shaped body, into the open stantially parallel to the axis. 65 end of which the sound-waves are adapted to The frame or case B isin the form of a thick enter, the bottom or inner end of such body disk of less diameter than the internal diamebeing shaped to reflect and concentrate the ter of the concentrator and mounted concensound-waves and finally direct them backtrically within the walls of the latter. As a ward along the axis of the cup-shaped body means of support in this position a number 70 until they strike the center of a vibrating diaof lugsb are used, into which screws 1), engagphragm mounted in the cup at right angles ing the walls of the concentrator, pass. The to its axis. Certain other advantages flow front of thecasehasacentralopeningb facing from the relative arrangement of the on p and the cone a, and im mediately back of the opendiaphragm, which will be referred to in the ing is a diaphragm b, the center of which is 75 more detailed description following. thus exposed to the sound-waves reflected In the accompanying drawings, Figures 1 backward from the cone. The partB may bea and 2 show in section alternative forms of mechanical or an electrical telephone-transmy invention, and Figs. 3 and 4 plans of the mitter which itis desired sound coming from same, respectively. a distance will actuate with the greatest force, to

The apparatus consists in general of two and in case the sound is produced by speech parts, A the reflecting, concentrating, and with the greatestclearness. Thetransmitteris focusing body, which may be referred to as placed inside of the concentrator for various the concentrator, and B the frame or casein reasons. It thereby restricts the entrance of which the diaphragm is supported. The 0011- sound to the annular passage C, which con- 85 centrator is a cup-shaped structure having, veys it to the inclined surfaces a and a, and

preferably, a cylindrical exterior and interior finally to the diaphragm. If sounds entered and whose depth is not of prime importance, along the axis of the concentrator, they would although a depth of about one-half its diabe deflected outward by the cone and inter- 0 meter is found to give good results. The infere with those entering at the side. Hence 9o ner end or bottom of the cup is provided with by closing the middle portion of the concenannular walls a, inclining inward and cutting trator these interfering portions of the sound oflf what would otherwise be a square corner are excluded. Again, by housing the teleat the base of the cup. At the center of the phone inside of the concentrator a compact bottom of the cup a cone a is formed, with single structure is obtained. It is not essen- 5 its apex lying in the axis of the cup and tial, however, that the telephone be located about in the same plane with the beginning inside of the concentrator, since it might be of the inclined Walls a. When the incline of placed outside and the sound conveyed to it the wall 6L and that of the cone are straight, from the cone by means of a tube; but it as in Fig. 1, they are preferably at forty-five would then be preferable to close the middle portion of the concentrator by a disk or block of some character.

In using this apparatus the open end is to be presented to the source of sound, so that the Waves will enter as near direct as possible but by properly proportioning the width of the passages through which the sound travels the instrument will be efficient through a range of about forty-five degrees.

Having described my invention, I claim- 1. A sound-concentrator, consisting of a cup-shaped body having an axial projection with inclined sides on its bottom and an inclined surface around the edge of its bottom and means whereby sound is first directed against the inclined sides.

2. A sound-concentrator, consisting of a cup shaped body having internal inclined walls around its bottom, and a conical projection at the center of its bottom and a shield forming an annular opening at the mouth of the cup, for the purpose set forth.

3. A sound-concentrator, consisting of a hollow cylinder, having one end closed, an annular internal inclined surface around the edge ofthe closed end and adapted to deflect sound toward the center along substantially radial lines, an internal projecting cone at the center of said closed end and a disk of less diameter than the cylinder-and supported in the open end thereof, for the purpose set forth.

4. A sound-concentrator, consisting of a cup-shaped body having an axial projection with inclined sides on its bottom, and an inclined surface around the edge of its bottom, in combination with a shield closing the middle'portion of the mouth of the cup-shaped body and forming an annular opening for the entrance of sound.

5. A sound-concentrator, consisting of a cup-shaped body having an axial projection with inclined sides on its bottom, and an inclined surface around the edge of its bottom, in combination with a shield closing the middle portion of the mouth of the cup-shaped body and forming an annular opening for the entrance of sound and a telephone-transmitter contained in said shield.

6. A sound-concentrator, consisting of a cup-shaped body having an axial projection with inclined sides on its bottom, and an inclined surface around the edge of its bottom, in combination with a shield closing the middle portion of the mouth of the cup-shaped body and forming an annular opening for entrance of sound, a telephone-transmitter contained in said shield and facing said projection.

7. An apparatus for concentrating and focusing sound,consisting of a cup-shaped body having internal deflecting surfaces at its closed end tending to direct the incoming sounds first in a substantially radial direction and then in an outward or backward direction.

8. The combination with a telephone-transmitter, of a sound-deflector consisting of a conical projection pointing toward the diaphragm of the transmitter and means for directing sound laterally against the sides of the projection, substantially as described.

9. The combination with a telephone-transmitter, of a conical projection pointing toward the diaphragm of the transmitter and an annular inclined surface surrounding the projection whereby sound proceeding from a source behind the transmitter will be concentrated, and directed toward the front of the transmitter.

10. The combination with a sound-concentrator, in the form of -a cup, and having a central projection with inclined sides on itsbottom and annular inclined sides around the bottom adapted to deflect sound toward said central projection, of a telephone-transmitter located in the cup with its diaphragm exposed to sounds deflected by the central projection, substantially as described.

11. A sound-concentrator, consisting of a cylinder having one end closed and the other end provided with an annular opening near the edge, deflecting internal surfaces adapted to direct the sound enteringthe annular opening backward along the axis, in combination with a telephone-transmitter located inside of the cylinder, substantially as described.

In witness whereof I subscribe my signature in presence of two witnesses.

CHARLES LIVINGSTON HYDE.

Witnesses:

FRANK S. OBER, WALDO M. OHAPIN.

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