Improvements in Actuating Acoustic Signalling Apparatus and in Means therefor.
Year: 1888

page_text: COMPLETE SPECIFICATION.
Improvements in Actuating Acoustic Signalling Apparatus and in
Means therefor.
I, CAESAR BADE of Graskeller Hamburg in the Empire of Germany Engineer 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:
This invention relates to the actuating of acoustic signals for instance fog horns
syrens whistles and the like employed on vessels, lighthouses seacoasts, or for military
signalling or other purpose, and the invention consists in certain means hereinafter
described whereby carbonic acid gas may be utilized for the sounding of said signals,
such gas being formed from liquid carbonic acid.
The object of the improvement is to render manual labour unnecessary for sounding
such signals, and also to obviate the inconveniences of the use of steam, namely deposit
of sediment in the foghorn or the like or of condensed water therein whereby the tone
or quality of tone is impaired and the instrument is subject to great wear.
generally the purpose of the invention is to increase the audibility quality of tone
and durability of such signalling apparatus and to render the same always ready
for use.
And
To these ends the invention consists in combining with the foghorn or other signalling
device, a reservoir adapted to receive and hold gaseous carbonic acid, and a receptacle or
receptacles in communication with said reservoirs for containing liquid or solid
carbonic acid and allowing same to vaporize and pass to the reservoir when desired.
Reference being made to the annexed drawing-Fig. 1 is an elevation of the
reservoir and other parts as applied to a foghorn. Fig. 2 is a plan view thereof.
The apparatus consists of a reservoir A preferably of iron or steel and capable of
withstanding considerable pressure R is a foghorn preferably secured by brackets to
said reservoir and in communication therewith through pipe e provided with cock h-
Or in place of said foghorn, or together with the same, a whistle R¹ may be connected
to the reservoir and communicate therewith in a similar manner. The reservoir A
should be provided with a safety valve and a pressure gauge. P are metal cylinders
adapted to contain liquid or solid carbonic acid. There may be but one cylinder or
any number of them, but preferably there are two so that one may be removed and
Price Ed

page_text: refilled while the other is left to operate the signal, the cylinders being alternately
used The cylinders P are provided with valves v preferably screw down valves and
they are connected by pipe unions with the reservoir A. The reservoirs are connected
to the reservoir A so that they may be easily removable, for instance they may be
supported on trays d fixed to the wall of the reservoir A and also connected thereto
by bows b.
To set the apparatus in action, one of the valve vis opened and the carbonic acid
being released from pressure becomes gaseous flowing into the reservoir A until a
desired pressure is attained therein. The valve v is then closed by hand-By opening
the cock the compressed gas escapes and sounds the horn, whistle or other
signal.
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) The combination with a foghorn or other acoustic signalling device, of a
reservoir A adapted to be placed in communication therewith, and a receptacle or
receptacles adapted to contain liquid or solid carbonic acid and be placed in com-
munication with said reservoir.
2) The combination with a reservoir A, having safety valve and pressure gauge
pipe e having cock h, an acoustic signalling device R in connection with said pipe,
trays d and bows b, cylinders P adapted to be supported by said trays and bows,
valves and pipe unions n substantially as and for the purpose set forth.
Dated this 25th day of March 1000.
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C.,
Agents to Applicant.