Improvements in connection with Speaking Tubes.
Year: 1893

page_text: Date of Application, 2nd June, 1893
Complete Specification Left, 15th Sept., 1893-Accepted, 21st Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in connection with Speaking Tubes.
I HENRY BINKO of 34 Leadenhall Street in the County of Middlesex
Electrical Engineer do hereby declare the nature of this invention for IMPROVE-
MENTS IN CONNECTION WITII SPEAKING TUBES, to be as follows:-
The object of my invention is to provide speaking tubes with an automatic
whistle fixed to a receiver, and by means of which receiver, the whistle can be
removed when not required.
For this purpose I construct a combination speaking tube fitting, consisting of a
transmitting mouth-piece, a receiving ear-piece, and whistle combined.
The whistle is attached internally to the receiver.
Such whistle in its normal position closes internally the month-piece, allowing a
whistling signal only. On receiving such a signal, the receiver, the normal position
of which is vertical, is taken to the ear horizontally, and thereby automatically
removing the whistle from the internal opening of the mouthpiece, leaving the tube
free for speaking.
Dated this Second dow of T 1000
HENRY BINKO.
COMPLETE SPECIFICATION.
Improvements in connection with Speaking Tubes.
HENRY BINKO Electrical Engineer 34 Leadenhall Street London, E.C. do
hereby declare the nature of my invention for IMPROVEMENTS IN CONNECTION
WITH SPEAKING TUBES, 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 provide speaking tubes with an automatic
whistle fixed to a receiver & by means of which receiver the whistle can be removed
when not required.
For this purpose I construct a combination speaking tube fitting consisting of a
transmitting mouthpiece, a receiving earpiece & whistle combined.
The whistle is attached internally to the receiver.
Such whistle in its normal position closes internally the mouthpiece allowing a
whistling signal only. On receiving such a signal the receiver whose normal
position is vertical is taken to the ear horizontally & thereby automatically removes
the whistle from the internal opening of the mouthpiece leaving the tube free for
speaking.
I also construct for the use in noisy places instruments with 2 receivers & in order
to make same suitable for persons who are right or left-handed both receivers are so
arranged, that no matter if the right or left-handed receiver is handled, the whistle
places and replaces itself automatically as if only one receiver is employed.
And in order that my said invention may be more clearly understood and readily
carried into effect, I will proceed aided by the accompanying drawings more fully
to describe the same.
Fig. (1) shows a vertical section & in Fig. (2) the receiver is shown
horizontally.
Like letters indicate like parts in the drawings.
A is the body of the improved speaking tube mouthpiece which by means of the
screw B is attached to each end of the provided tubing M is the actual mouthpiece,
serving as transmitter. D is the hollow arm of the receiver R rigidly fixed to a
TD 037

page_text: flange Fig. 3 of proportional size to the diameter of the body of the
instrument A.
The flange O swings on a centre-piece Z on one side of the body where one
receiver only is used and on both sides when two receivers are required.
In the interior fixed to the centre-piece Z, I provide a small bar F forming one
piece with the whistle W.
The bar is slotted at H and set by means of the screw S, so as to allow the
adjustment of the whistle nearer or further to or from the inner aperture G of the
mouthpiece M.
On the side or sides of the body of the instrument I provide an opening C.
When the instrument is not used, the receiver is vertically suspended, as shown
in Fig. 1, the opening C is then closed by means of the flange O of arm D and
consequently the full force of air current must pass through the aperture G of the
whistle W.
But when the instrument is in use the receiver is raised horizontally as in Fig. 2,
the hollow of the receiver arm D comes direct over the opening C and so allows
the sound to pass freely through the arm D to receiver R.
Following the movement of flange O the whistle is automatically removed from
its normal position Fig. 1 out of the way in the recess of the body as shown in
Fig. 2, so as to have the passage clear for speaking from end to end.
Fig. 3 shows in section how the receiver arm flange O is constructed & fixed to
one or both sides of the instrument.
The stud I is provided with the object of being unscrewed & replaced when
required by an indicator V of usual construction as shown in Fig. 4.
I wish it to be understood that I do not restrict myself to the exact construc-
tion of parts shown in the various drawings but may vary the same, so as to
better carry out the principles of my invention without departing from the true
scope thereof, but what I claim is :-
Firstly. A speaking tube mouthpiece having an internal whistle in combination
with one or two receivers.
Secondly. The whistle to be in such manner attached internally to one or both
receivers so as to close the inner aperture of the actual mouthpiece when the
eceiver is not used, and so arranged that when one or both receivers are used
the whistle is automatically removed by means of the receiver.
Thirdly. And so arranged that when one or both receivers are dropped after
use, it replaces the whistle automatically to its normal position.
Fourthly. The improvements in the construction of speaking tube mouthpieces
with a combination whistle & one or two receivers whose parts are constructed
arranged and work substantially as herein discribed and set forth in the several
figures of the drawings.
Dated this Wifteanth dev of Santambar 1202