Improvements relating to Ear Trumpets.
Year: 1894

page_text: Date of Application, 26th June, 1894-Accepted. 28th July, 1894
Improvements relating to Ear Trumpets.
I, JAMES BARK, of Bessingby Road, Bridlington Quay, Yorkshire, Retired
Plumber and Painter, 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 :-
My improvements have reference to that class of acoustic devices generally
known as car trumpets."
The object of my invention is to produce an ear trumpet of such a construction
and arrangement of the several parts of which it is made up or consists-all as
hereunder described-
-as will permit of its being utilised by those afHicted with
deafness whilst at same time allowing the hands and head of the user to be
at liberty. That is to say :-It is not necessary for the user to hold the appliance
when listening to conversation, delivery of speeches &c.
Said improved ear trumpet is suspended from the shoulder of the listener and
the funnel shaped mouth of the device, hereinafter termed the "sound receiver"
rests at the bottom edge thereof, upon the breast of the person using it.
In order that the nature and objects of my invention may the better be under-
stood, I will now proceed to describe same by the aid of the accompanying sheet
of drawings, referring to which, Figure 1 illustrates the device complete,
Figures 2, 3, 4, 5 detached, detail views to an enlarged scale of certain members
hereunder identified, of the device-which latter consists essentially of the following
parts, namely, the car piece, tip or nipple a, the articulated connecting india rubber
or other elastic tubing introduced between the extension portions d d' of the
sound receiver D into which the sound waves pass and are emitted through the ear
piece, tip, or nipple aforesaid a to the hearing organs of the listener, and the
resonant drum e e¹. I prefer to make said drum of ivory, bone, xylonite, vulcanite
or other suitable hard substance. The nipple a preferably of india rubber is
entered into the ear orifice and the outer end of the nipple is formed as shewn
at a to ensure its retention when introduced therein. The "sound receiver " D
or "trumpet" portion of the device, up to, and including the extension piece d
may be of any suitable sheet metal.
The device is suspended from the shoulder of the user the point of suspension
being indicated at f. The "sound receiver” D as before stated rests at its bottom
edge D' on the breast of the wearer.
The separate lengths of elastic tubing bc are articulated together by means of
connectors preferably metal, shewn in dotted lines at g (Figure 1). The upper
end of the length c is entered over and around a connector ferrule h, screw threaded
at top to allow of its being secured in the drume on to the extension piece e¹ of
which takes the indin rubber tip or nipple a. Referring to Figure 4 it will be seen
that to provide against the contingency of any particles or anything injurious
entering the ear, is a fine gauze diaphragm i at top of the connector ferrule h.
The device may be employed either for the right or left car. This is effected by
simply reversing position of tube d' when attaching to extension piece d of sound
receiver D. So also in reference to the tube c and drum e.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The imamaredd
d

page_text: described and shewn whereby same may be employed without necessitating the
device being held and allowing also of free movenient of the head of the user of
the device.
June 1901
1
V. LAZARUS,
1, Furnival Street, E.C., Agent for Applicant.