US838297A - Sound-modifier. - Google Patents

Description

PATENTED DEG. 11, 1906.

C. R. BREEN. SOUND MODIFIER.

APPLICATION FILED MAY 25, 1906.

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UNITED %ATE% FATE FhLGE.

CHARLES R. BREEN, OF NEW YORK, N. Y.

SOUND-MQDEFlER.

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To all whom, it may concern;

Be it known that 1, GnAnLEs R. BREEN, a citizen of the United States, residing in the borough of Manhattan, city of New York, in the county of New York and State of New York, have'invented certain new and pseful Improvements inSound-Modifiers, of which the following is a specification, reference bei g had therein to the accompanying drawings, forming a part'thereof.

in the use of talking-machines, phonographs, graphophones, and other soundemitting apparatus it is irequently desirable Iwill now describe the device embodying my invention illustrated in the accompanying drawings, and will thereafter point out my invention in claims.

Figure 1 is an elevation, partly in section, of ahorn with the sound-modifier therein and of the. upper part ofthe' talliing-machine Fig. a i'ront elevation of the sound-mod fier f Fig. 3 isa central lon'gitudinalsection of the same. I

The drawings illustrate parts of an ordi- I .iiar y'. talkingmachinaincluding a disk or record 1, a needle 2, a sound-conveying arm 3, and a horn 4. The horn has a projecting thimble 9 at its small end secured thereto or forming part thereof and fitting into the end of the sound-conveying arm My improved sound-modifier shown in Fig. l in its operative posit on in the horn and is separately shown in Figs. 2 and 3. It comprises a hollow box having an outer frusto-c onical wall 5, which fits the inner surface of the horn or the thlmhle 9 thereoit near the small end of the horn, and having an in-' nor irusto-conical wall 6. inclosing a restricted aperture extending from end to end of the boX, these two irusto-conical walls having a common axis coincident with the axis of the Specification of Letters Patent. I

Application filed May 25, 1906, Serial No. 318.628.

1 and scope of my invention.

Patented Dec. 11, 1900'.

horn. This hollow box alschas a front annular'end Wall 7 and a rear annular end wall 8, these annular end -walls being arranged right angularly to the common axis of the finsto-conical walls. The four walls of the box constituting the sound-modifier are shown as made of separate pieces secured together, as by glue applied at, their abuttingportions. The material employed is preferably a fibrous hard material--such, for example, as a heavy paper or cardboard known as pressed board.

The sound-modifier fits tightly into the horn and restricts the opening or passage theretlirough to the aperture through the sound-modifier and also provides a sounddampening chamber surrounding this restricted orifice, so that it'not only reduces the volume of the sound emitted by the horn but modifies and softens its quality, produc-- ing a pleasing modulation of the tone of the instrument. The sound-modifier may be readily inserted and removed, so that the instrument may be quickly changed from the condition of loudest tones to the condition in which its softened and modified tones are emitted.

It is obvious that modifications maybemade in tne construction shown and above particularly described within the principle What I claim, and desire ters Patent, is-

1. The combination, with a sound-emit ting horn, of a sound-modifier adapted to fit therein and provided with an opening therethrough and with walls inclosing a hollow sound-dampening chamber.

2. The combination, with a SOUIld-Gilfi'ir ting horn, of a sound-modifier adapted to fit to secure by Lettherein and comprising an outerirusto-con ical wall, an inner frusto conical wall forming an opening extending through the soundmodifier, the two frusto-conical walls having a common axis, and annular end wallsarranged right-angularlv to such axis and inclosin a chamber between the husto-conical wa substantially as set iorth.

- in testimony whereof I have afiixed my signature in presence of two witnesses.

CHARLES R. BREEN.

Witnesses: T'lENRY D. WILLIAMS, BERNARD Cownn."

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