IMPROVEMENTS IN TELEPHONES
Year: 1884

page_text: PROVISIONAL SECIFICATION,
"
I, CHARLES AUBREY DAY, of 321, High Holborn, in the County of Middlesex,
Fellow of the Institute of Patent Agents, do hereby declare the nature of the
Invention for "IMPROVEMENTS IN TELEPHONES (a communication to me from
abroad by James Lowth, Inventor, of Walnut Street, and William Dana Ewart,
Manufacturer, of South Jefferson Street, both in Chicago, State of Illinois, in the
United States of America,) to be as follows:-
:-
The present Invention relates to certain new and useful improvements in the
construction of telephones.
In the Provisional Specifications of other applications made by me for Letters
Patent in number immediately preceding that of the present Application are
described telephones of both the magnets and electro type, adapted to work
according to the mode of operation peculiar to the kind of telephonic apparatus
made the subject of this Application; but the said other cases or some of them
more particularly relate to the novel mode of operation, or to the new and
improved method of operating a telephone, while in the present application the
Invention consists in the novel features of construction and in the combinations of
devices which will be hereinafter more fully described.
The apparatus is constructed with a small box having a cap or lid applied
thereto, and with a magnet located within the box and having a surrounding helix
the ends of which are carried to binding-posts, the binding posts being applied to
the said box, and the helix being also applied in the usual manner.
A vibrating diaphragm is located within the box just out of contact with the
magnet, and a tubular extension enters the cap, and has a vibrating rod passing
freely through both it and the cap.-The inner end of the vibrating rod is pointed,
and this small point enters either a depression, or a puncture in the diaphragm.
By this means the inner end of the vibrating rod is retained in place relatively to
the said diaphragm, as will hereinafter more fully appear. A small strap, or band
of rubber, or other sufficiently flexible material, extends across the outer end of
the said tube, and through which the vibrating rod passes and by which it is
retained, yieldingly, and out of contact with said tube. The outer end of the said
vibrating rod is formed with a button or head.

page_text: A metallic circuit between the transmitter and receiver is formed by wires
connected to binding posts on such parts.
To use the improved novel device for the purpose for which it is intended, viz.,
to transmit articulate speech by the action on the diaphragm of the transmitter, of
the vibrations of exterior parts of the body, the speaker holds it in his hand and
places the said button or head lightly against his throat, and the person to whom
the words are spoken holds the ordinary receiver (at the other end of the line)
to the ear in the usual manner. The spoken words or message will thus be very
clearly and distinctly transmitted or repeated to another at a great distance from
the speaker. It is to be understood that both a transmitter and a receiver may be
employed at each end of the circuit; that the circuit either may or may not operate
in connection with a battery, and that other mere modifications may be made
according to circumstances.
The transmitter box and its said cap or lid so enclose the diaphragm as to
prevent it from being disturbed otherwise than by the vibrations imparted to it by
the vibrating rod, and hence the latter vibrations will be received and repeated
, distinctly and without that confusion of sounds which might or would occur were
the diaphragm not enclosed. The tubular device or extension while it serves to
surround and protect the vibrating rod and to support the strap or other means
for holding this rod in place, also answers the purpose of a handle by means of
which the person using the contrivance may most conveniently hold against the
proper part of the body, in an operative manner, the said head of the vibrating rod.
It being understood that the following summary is not intended by me as a
statement of claim or as expressly defining or limiting the scope of the Claims
I may hereafter make, but merely for the purpose of pointing out the especial
features of novelty characteristic of the present Invention, I would mention that
such features of novelty consist. In combination with a telephonic transmitter, a
vibratory rod, arranged substantially as described in operative contact at one end
with the vibratory element or elements of the telephone; and projecting at its
'other end from the latter to receive the muscular vibrations of exterior portions of
the speaker's body. In the combination with the diaphragm, magnet, helix, and
other necessary parts of a transmitter, of a vibrating rod arranged and operating to
move said diaphragm, and a cover to protect the said diaphragm against any
material influence upon it by sound waves that might otherwise act perceptibly on
it through the medium of the atmosphere.-And in the combination with the case
and other usually necessary parts of the transmitter, of a vibrating rod which bears
directly on the diaphragm as described, and a tubular extension which serves the
double purpose of a surrounding protection of and support to the said rod and
which also answers as a handle for the convenient use of the transmitter whenever
said rod is to be placed in contact with the body of the speaker.
Dated this 26th day of November 1884.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C.,
Agents for the Applicant.

page_text: "
I, CHARLES AUBREY DAY, of 321, High Holborn, in the County of Middlesex,
Fellow of the Institute of Patent Agents, do hereby declare the nature of the
Invention for "IMPROVEMENTS IN TELEPHONES (a communication to me from
abroad by James Lowth, Inventor, of Walnut Street, and William Dana Ewart,
Manufacturer, of South Jefferson Street, both in Chicago, State of Illinois, in the
United States of America), and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement :-
The present Invention relates to certain new and useful improvements in the
construction of telephones.
In the Specifications of other applications made by me for Letters Patent in
number immediately preceding that of the present application are described
telephones of both the magnets and electro type, adapted to work according to the
mode of operation peculiar to the kind of telephonic apparatus made the subject of
this application; but the said other cases or some of them more particularly relate
to the novel mode of operation, or to the new and improved method of operating a
telephone, while in the present application the Invention consists in the novel
features of construction and in the combinations of devices which will be herein-
after more fully described.
To enable those skilled in the art to which the present Invention relates to fully
understand the present improvements I will now proceed to describe the latter
referring by letters of reference to the accompanying drawings in which I have
illustrated the Invention carried out in that form in which it has so far been
successfully practiced.
In the drawings, Figure 1, represents a side view of the improved telephone;
and Figure, 2, represents a vertical, longitudinal, central section through that part
of the apparatus wherein the present Invention more particularly lies, and showing
well the relative positions of the diaphragm and the magnet connected there with.
The same reference letters indicate the same or like parts in the different views.
The apparatus is constructed with a small box, A, having a cap or lid B, applied
thereto. C is a magnet located within the box, A, and having a surrounding
helix, D, the ends of which are carried to binding posts, a, a¹, the binding posts
being applied to the said box, and the helix being also applied in the usual
manner.
A vibrating diaphragm, D¹, is located within the box, A, just out of contact
with the magnet, and a tubular extension, E, enters the cap, B, and has a vibrating
rod, F, passing freely through both it and the cap, B. The inner end of the
vibrating rod, F, is pointed and this small point enters either a depression, or a
puncture in the diaphragm, D¹. By this means the inner end of the vibrating
rod, F, is retained in place relatively to the said diaphragm, D¹, as will hereinafter
more fully appear. A small strap, G, or band of rubber, or other sufficiently
flexible material extends across the outer end of the tube; E, and through which
passes and by which is retained, yieldingly, and out of contact with said tube, the
vibrating rod, F, the outer end of which is formed with a button or head, H.
A metallic circuit between the transmitter and receiver is formed by wires, I,
connected to the binding posts, a, a¹, and to other binding posts on the receiver, J,
as indicated in Fig; 1.
To use the improved novel device for the purpose for which it is intended, viz.,
to transmit articulate speech by the action on the diaphragm of the transmitter, of

page_text: the vibrations of exterior parts of the body, the speaker holds it in his hand and
places the said button or head, H, lightly against his throat, and the person to
whom the words are spoken holds the ordinary receiver, (at the other end of the
line) to the ear in the usual manner. The spoken words or message will thus be
very clearly and distinctly transmitted or repeated to another at a great distance
from the speaker. It is to be understood that both a transmitter and a receiver
may be employed at each end of the circuit; that the circuit either may or may
not operate in connection with a battery, and that other mere modifications may
be made according to circumstances.
The transmitter box, A, and its said cap or lid, B, so enclose the diaphragm, D¹,
as to prevent it from being disturbed otherwise than by the vibrations imparted to
it by the vibrating rod, F, and hence the latter vibrations will be received and
repeated distinctly and without that confusion of sounds which might or would
occur were the diaphragm D¹, not enclosed as shown. The tubular device or
extension, E, while it serves to surround and protect the vibrating rod, F, and to
support the strap, G, or other means for holding the rod, F, in place, also answers
the purpose of a handle by means of which the person using the contrivance may,
most conveniently, hold against the proper part of the body in an operative
manner, the head, H, of the vibrating rod.
Having now particularly described and ascertained the nature of the said
Invention and in what manner the same is to be performed I declare that what
I claim is
First. In combination with a telephonic transmitter, a vibratory rod, arranged
substantially as described and illustrated, in operative contact at one end with the
vibratory element or elements of the telephone, and projecting at its other end
from the latter to receive the muscular vibrations of exterior portions of the
speaker's body, as hereinbefore set forth with reference to the accompanying
drawings.
Second. The combination with the diaphragm, magnet, helix, and other necessary
parts of a transmitter, of a vibrating rod arranged and operating to move said
diaphragm, and a cover, B, to protect the said diaphragm against any material
influence upon it by sound waves that might otherwise act perceptibly on it
through the medium of the atmosphere, substantially as hereinbefore described
with reference to the accompanying drawings.
Third. The combination with the case and other usually necessary parts of the
transmitter, of a vibrating rod which bears directly on the diaphragm as described,
and a tubular extension, E, which serves the double purpose of a surrounding
protection of and support to the said rod and which also answers as a handle, for
the convenient use of the transmitter whenever said rod is to be placed in contact
with the body of the speaker, substantially as hercinbefore described with
reference to the accompanying drawings.
Dated this 6th day of January 1005
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C.,
Agents for the Applicant.