A Portable Microphone for the Improvement of Hearing in Deaf Persons, and Adapted both for Individual and General Conversation.
Year: 1892

page_text: Date of Application; 7th Nov., 1892
Complete Specification Left, 16th Jan.; 1893-Accepted, 18th Feb., 1893
PROVISIONAL SPECIFICATION.
A Portable Microphone for the Improvement of Hearing in
Deaf Persons, and Adapted both for Individual and General
Conversation.
FRANK SHAPLEY M.R.C.S. L.S.A. Surgeon Dunedin Sidcup S.E. I do hereby
declare the nature of this invention to be as follows:-
A portable microphone consisting of a transmitter & receiver both of which
communicate with a portable dry battery. The transmitters & receivers so made
as to screw together & contain the necessary wire. The transmitters & receivers
to be attached to moveable handles; & the receivers to be attached, if preferred,
to the car by a clip (vulcanite or otherwise); or by a spring passing over the bead
with a pad at the other end; or another receiver for the other ear.
An apparatus for general conversation consisting of a centre ornament for table
or room in shape like a salad bowl which contains a complete microphone apparatus
with connecting wire to the patients receiver. Same apparatus can be fixed in a
convenient position in a theatre, lecture hall, or church or other public building to
convey sounds to the deaf person.
Dated this 5th day of November 1892,
FRANK SHAPLEY, M.R.C.S.
COMPLETE SPECIFICATION.
A Portable Microphone for the Improvement of Hearing in
Deaf Persons, and Adapted both for Individual and General
Conversation.
1, FRANK SHAPLEY M.R.C.S., L.S.A., Surgeon, Dunedin, Sidcup, S.E. 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 this invention is to provide a portable microphone for the improve-
ment of hearing in deaf persons and adapted both for individual and general
conversation.
The apparatus consists of a transmitter, a receiver and a portable battery which
by flexible covered wires is connected to both, a switch being provided for making
and breaking the circuit. The transmitter, the receiver and the battery may be of
any suitable or known construction, and are adapted for the object in view. The
receiver may be single, for one ear, or double for both ears of the deaf person, and
clip or clips or spring and pad appliances may be provided for attaching the
receiver or receivers to the head or ear or ears. Both receiver and transmitter
may be fitted with a handle for holding the same by.
In the accompanying drawing
Figure 1 shews an apparatus constructed according to my invention;
Figure 2 is a plan view of the dry battery the cover being removed to shew the
electrical connections; and
Figure 3 illustrates the action of the switch.
The transmitter A, say a Hunning's patent one or of any other suitable form
and the receiver B, say a Cox-Walker patent one or of any suitable form, are con-
nected to a battery G by preference a dry battery and to each other by flexible
connections for instance in the manner shewn in Figures 2 and 3; the zinc Z of
the battery is by the switch S connectable with the wire D leading to one pole of
Price dl

page_text: the transmitter A whose other pole by the wire E connects to one pole of the
receiver B, the other wire F leading to the carbon C of the battery. The switch $
makes contact at Z. The covered wires D E and Fare adapted to be coiled
round the transmitter A. and receiver B respectively and held there when not in
use by clips H, say two on each instrument.
Both instruments may be fitted with a handle I to hold them by, or the receiver
fitted with handle or not may be attached or suspended to the ear by a clip or kept
in position by a spring with a pad on the opposite side of the head. Both receiver
and transmitter should be made as small as possible and the parts A' and B₁ may
suitably be reduced in height to save room in the pocket.
It
The dry battery should also be reduced to the smallest possible dimensions.
will be noticed that the poles of the battery are all arranged within the enclosing
box but can be got at by removal of the lid G', in this way both wires coiled
together pass out through one hole in the lid. In order to enable a deaf person to
converse conveniently with more than one person two or more transmitters may be
connected to the battery and receiver but the apparatus is then more suitable for
being placed on a table than for being carried in the pocket; the battery might
then be fixed in a bowl or stand placed on the table and the several transmitters
and the receiver connected thereto.
Figure 4 illustrates the electrical connections for an instrument consisting of one
receiver B, three transmitters A', A', A³ with a switch S and a battery, the parts
being constructed as above described.
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 :-
1. A portable microphone for deaf persons consisting of a transmitter, a receiver
and a portable battery with suitable connections and switch.
2. A portable microphone for deaf persons consisting of a transmitter A, a
receiver B and a portable battery G which is connected to them and has a switch
with internal pole wire connections, all constructed and arranged as described and
shewn.
3. A portable microphone for general conversation with a deaf person consisting
of a receiver two or more transmitters and a battery with suitable connections and
switch.
Dated this 16th day of January 1893.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.