An Improved Apparatus for Receiving and Transmitting Sounds.
Year: 1895

page_text: Date of Application, 27th June, 1895
Complete Specification Left. 27th Mar., 1896-Accepted, 2nd May, 1896
PROVISIONAL SPECIFICATION.
An Improved Apparatus for Receiving and Transmitting Sounds.
I, CÉSAIRE VILLARD of 4 Rue de Tilsitt Marseilles, France, Manufacturer,.
do hereby declare the nature of this invention to be as follows :-
Instead of the usual trumpet-mouth at each end of the acoustic tube, I employ a
special terminal having a bell mouth for receiving sounds conveniently placed for
the ear, and a branch tube curved downwards with the end bent forward so as to be.
convenient for the mouth when speaking...
=
At the point where the speaking tube branches off from the main acoustic tube
I fix a light diaphragm which prevents the circulation of air, but is too thin to
stop the waves of sound which strike full upon it from the speaking mouthpiece..
The speaking tube has a hole to allow the speakers breath to escape.
Near the bell-mouth for the ear I place a whistling arrangement composed of
two discs with apertures in the centre fixed at a short distance apart, or any suitable
contrivance of this nature.
This serves as a
A similar arrangement is placed at the other end of the tube.
call to an interlocuter at the far end of the tube.
My apparatus allows the parties using the apparatus to keep the ear at the upper
orifice while the mouth is in proximity to the lower aperture.
Dated this 27th day of June 1895.
S. S. BROMHEAD,
97 Newgate Street, London, Agent for Applicant.
COMPLETE SPECIFICATION.
An Improved Apparatus for Receiving and Transmitting Sounds.
I, CÉSAIRE VILLARD of 4, Rue de Tilsitt, Marseilles, France, Manufacturer,.
do hereby declare the nature of this invention and in what manner the same is
to be performed, to be particularly described and ascertained in and by the-
following statement :=
Instead of the usual trumpet-mouth at each end of the acoustic tube, I employ a
special terminal having a bell mouth for receiving sounds, conveniently placed for-
the ear, and a branch tube curved downwards with the end bent forward so as to be-
convenient for the mouth when speaking.
At the point where the speaking tube branches off from the main acoustic tube
I fix a light diaphragm which prevents the circulation of air, but is too thin to stop.
the waves of sound which strike full upon it from the speaking mouth-piece.
Near the bell mouth for the ear I place a whistling arrangement composed of two.
discs with apertures in the centre fixed at a short distance apart, or any suitable
contrivance of this nature. A similar arrangement is placed at the other end of
the tube. This serves as a call to an interlocutor at the far end of the tube.
My apparatus allows the parties using the apparatus to keep the ear at the upper-
orifice while the mouth is in proximity to the lower aperture.

page_text: will now describe my invention with reference to the accompanying drawings
in which:
Fig. 1 shows an end elevation of my invention.
Fig. 2 shows a sectional side elevation of Fig. 1.
Fig. 3 shows a section of a handle piece on the line G H, Fig. 2.
A is the telephone tube.
B is a thin diaphragm to prevent the circulation of air.
C is the ordinary whistle.
E is the mouth-piece.
F is the bell-shaped ear piece for hearing.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
An acoustic apparatus for hearing and transmission of sound consisting of
a tube A furnished with a whistle C, and a bell mouth F, to be applied to the ear
of the speaker and a second tube branching from the former and terminating in a
mouth-piece E, this tube being furnished at its upper part with a diaphragm B for
preventing the circulation of the breath of one speaker to the mouth of the other
as herein described and set forth.
Dated this 27th day of March 1896.
is the bell-shaped ear piece for nearing.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what 1
claim is:
Au acoustic apparatus for hearing and transmission of sound consisting of
a tube A furnished with a whistle C, and a bell mouth F, to be applied to the ear
of the speaker and a second tube branching from the former and terminating in a
mouth-piece E, this tube being furnished at its upper part with a diaphragm B for
preventing the circulation of the breath of one speaker to the mouth of the other
as herein described and set forth.
Dated this 27th day of March 1896.
S. S. BROMHEAD,
97 Newgate Street, London, Patent Agent.