Improvements in Telephone Receivers.
Year: 1892

page_text: Date of Application, 19th Apr., 1892-Accepted, 21st May, 1892
Improvements in Telephone Receivers.
I, EDWIN CHARLES HESS, of 718 Clinton Street, in the City of Camden,
County of Camden, and State of New Jersey, one of the United States of
America, Electrician, 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 :-
The object of my invention is to so construct a telephone receiver that it can be
applied to both cars of the person using the receiver at one and the same time, and
to so construct the receiver that the car pieces will fit tightly to the cars; my
improvements being readily attachable to the ordinary "bell" receiver.
In the accompanying drawing :-
Fig. 1, is a side view partly in section of my improved telephone receiver;
Fig. 2. is an enlarged face view looking in the direction of the arrow, Fig. 1;
Fig. 3, is a section on the line 1-2, Fig. 2;
Fig. 4, is a perspective view of the yokes of the connecting arm ;
Fig. 5, is a inodification of the universal joint;
Figs. 6 and 7 are views of modifications of the joint between the primary
receiver and the connecting arm; and
Fig. 8, is a view of a modification.
A, is the receiver of an ordinary "bell" telephone instrument having the usual
binding screws a, the usual car-piece has been removed, and my improved ear-
piece B, substituted therefor; in the present instance this ear-piece is screwed
upon the instrument and holds the diaphragm a', in place, but it will be under-
stood that the ear-piece can be attached to the instrument in any suitable manner,
and in fact in some instances may be applied directly to the car-piece of the
instrument, where circumstances prevent the removal of the original car-piece.
The ear-piece B, has a central projection, which is adapted to enter the ear,
and in this projection is the opening c. Around the ear-piece is a cushion C,
made in the present instance of a thin rubber tube which will yield and
accommodate itself to the car so that when a person is receiving a message the
car is shut off entirely from outside noises.
Pivoted to the ear-piece is an arm D. This arm D, as shown in Fig. 1, is yoked
and pivoted at d, on each side of the receiver, the arm is sprung in place in the
present instance but screws or pins may be used as pivots when necessary.
The arm D, is so bent as to pass over or back of the head of the person
using the instrument, and has at its opposite end, a receiver E, provided with
an ear-piece F, similar in form to the car-piece B, having the cushion C, and a
projecting portion . The receiver is connected to the arm by a universal
oint e, and as shown in Fig. 1, this joint is made of a flexible tube, preferably
of rubber secured to the end of the arm and to a projection on the receiver, but
the joint may be made as shown in Fig. 5, which illustrates a ball and socket
oint.
The receiver E, is provided with a diaphragm f, and internal mechanism
ecessary for the transmission of speech.
The arm D, and its yoke section are hollow, and in this hollow arm are the
vires a, a, which make a circuit including the receiver E, the wires passing to
he binding posts e', on the receiver E, and their opposite ends pass out
rifices g, y, and along each side of the receiver A, to their binding posts a², as
LD

page_text: clearly shown in Figs. 1, and 2, the wires being so arranged that both receivers
are in the same circuit.
The tubular arm D. may connect with the space in front of the diaphragm
of the receiver A, through hollow pivots as shown by dotted lines in Fig. 2,
and also may connect with the space in front of the diaphragm f, Fig. 1. Thus
in the event of the magnetic portion of the receiver E, not working satisfactorily,
the message may be carried through the tube.
In Figs. 6 and 7, I have shown the joint between the car-piece and the arm D,
in a slightly different manner from that shown in Fig. 1, the yoke-section being
dispensed with, and the arm coupled to a bearing B, having two projections which
enter openings in the arm, the bearing being hollow for the passage of the wires
from the arm, as clearly shown in said figures.
In Fig. 8, I have shown a modification in which the magnetic portion of the
receiver E, is removed, and connection is made between the space and front of the
diaphragm of the receiver A, through the medium of a hollow tube b, the wires a, x¹,
in this case being dispensed with.
It will thus be seen that when my instrument is used, both ears are sealed
against outside noises, the projections, entering the ear and the cushions C,
fitting snugly against the outer portions of the car.
The arm D, carrying the receiver E, can be thrown back over the head and
the instrument readily removed.
The universal joint between the arm D, and receiver E, allows the instrument
to accommodate itself to the head of the user.
I have made the instrument so that it can be applied to the receivers now in
common use, but a receiver embodying my invention may be made, in which a
special construction or arrangement of the portion A, may be advisable.
It will be understood that the cushion C, may be made of other material than
rubber and may be made of different shape in cross section.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. The combination in a telephone receiver, of the main standard receiver to
which the main wires are attached, an arm pivoted to said main receiver, a second
receiver carried at the opposite end of said arm, with wires passing through the
arm from the main wires, and attached to the opposite receiver so that both
instruments will be in circuit without disturbing the general arrangement of the
standard receiver, substantially as described.
2. The combination of the standard receiver as a main receiver, the car-piece B.
secured thereto, a liollow arm D, pivoted to the ear piece B, with a receiver E, a
universal joint connecting the receiver E, with the hollow arm, an car-piece F, on
the receiver E, with wires X, X, passing from the standard receiver through the
arm D, to the receiver E, substantially as described.
3. The combination of the main receiver A, with an car-piece B, having a
central projection b, adapted to enter the car, a passage in said projection com-
municating with the space in front of the diaphragm of the main receiver, a hollow
arm D, pivoted to said car-piece and communicating with a space in front of the
diaphragm A, with a receiver E, a hollow projection b, thereon adapted to the ear,
said receiver being connected to the tubular arm D, thus forming communication
between the two receivers, substantially as described.
4. The combination of the receiver A, the yoked hollow arm D, an ear-piece B,
to which the yoke is pivoted, a receiver E, having an ear-piece F, wires X, X',
extending along the receiver A, into openings g, g', at the rear of the yoke sections
of the arm and passing through the arm to the receiver E, the whole arranged
substantially as described.
5. The combination of the receiver, the car-piece B, the central projection b

page_text: with passage therein communicating with the space in front of the diaphragm of
the receiver, a hollow annular cushion C, secured to the car-piece and extending
beyond the central projection b, substantially as described.
Dated this 6th day of April 1892.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C., Agents for the Applicant.