Year: 1886

page_text: Date of Application, 8th Dec., 1886
Complete Left, 7th Oct., 1887
Complete Accepted, 8th Nov., 1887
RESERV
7
We, HUGO WALDEMAR LANGBECK, of No. 127 Leman Street, Goodman's Fields in
the County of Middlesex, Analytical Chemist, and OTTO DAMM, of No. 43 Leman
Street aforesaid, Gentleman, do hereby declare the nature of this invention to be as
follows:
:-
Our invention relates to the construction of apparatus for signalling by sound
wherein liquefied or highly compressed gases are employed for the production of
signals.
For this purpose we construct a strong closed receptacle by preference of spherical
or cylindro spherical shape and made of steel or phosphor bronze, so as to withstand
considerable pressures, which receptacle has an inlet opening connected by a tube,
provided with a safety valve and pressure gauge, with a strong vessel charged with
a gas compressed to a liquid or highly compressed condition similar to the vessels or
bottles charged with liquefied or compressed gases now commonly used for experi-
mental and other purposes. The vessel is connected to the tube by a screw or other
connection allowing of its ready attachment or detachment, and is provided with a
cock or valve by which the communication between the two vessels can be established
from time to time so as to allow a portion of the liquefied or compressed gas to expand
into gaseous form and to pass into the larger receptacle, charging this with gas at any
desired pressure as indicated by the pressure gauge.
This receptacle also has a discharge orifice connected by a pipe with a casing or box
on which are one or more sound signalling instruments such as whistles, trumpets,
sirens, or reed instruments, each such instrument being provided with a cock or valve
by means of which the gaseous pressure can be admitted thereto, while the connecting
pipe is also provided with a cock or valve by means of which the communication with
the sounding instruments can be entirely cut off.
Thus by charging the main receptacle from time to time with gas from the liquefied
or compressed gas receptacle, so as to maintain the requisite pressure in the former,
any required signals can be given by opening and closing the cocks or valves of the
sounding instruments or the cock or valve of the communicating pipe.

page_text: In some cases two receptacles or bottles containing the liquefied or compressed gas
may be connected to the charging tube of the main receptacle, so that when the one
bottle becomes more or less exhausted, there may be no interruption of the supply,
the second bottle being then used while the empty one is removed and replaced by a
charged one.
Instead of fixing the sounding instruments on a separate box as described, they may
be fixed directly on the main receptacle, but we prefer the former arrangement as being
more convenient and as avoiding the weakening of the vessel by forming a number of
apertures therein.
The liquefied gas we employ by preference for the purposes of our invention is
carbonic acid, but oxygen, hydrogen, or other condensible gases may be used.
Dated thie 8th day of December 1886
ABEL & IMRAY,
Agents for the Applicants.

page_text: Improvements in Apparatus for Signalling by Sound.
We, HUGO WALDEMAR LANGBECK of No. 127 Leman Street, Goodmans Fields in
the County of Middlesex, Analytical Chemist and OTTO DAMM of No. 43 Leman
Street aforesaid, Gentleman 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:-
Our invention relates to the construction of apparatus for signalling by sound
wherein liquefied or highly compressed gases are employed for the production of
signals.
For this purpose we construct a strong closed receptacle by preference of spherical
or cylindro-spherical shape and made of steel or phosphor bronze, so as to withstand
considerable pressures, which receptacle has an inlet opening connected by a tube
provided with a safety valve and pressure gauge, with a strong vessel charged with
a gas compressed to a liquid or highly compressed condition similar to the vessels or
bottles charged with liquefied or compressed gases now commonly used for experi-
mental and other purposes.
The vessel is connected to the tube by a screw or other
connection allowing of its ready attachment or detachment, and is provided with a
cock or valve by which the communication between the two vessels can be established
from time to time so as to allow a portion of the liquefied or compressed gas to expand
into gaseous form and to pass into the larger receptacle, charging this with gas at any
desired pressure as indicated by the pressure gauge.
This receptacle also has a discharge orifice connected by a pipe with a casing or box
on which are one or more sound signalling instruments, such as whistles, trumpets,
sirens or reed instruments, each such instrument being provided with a cock or valve
by means of which the gaseous pressure can be admitted thereto, while the connecting
pipe is also provided with a cock or valve by means of which the communication with
the sounding instruments can be entirely cut off.
Thus by charging the main receptacle from time to time with gas from the liquefied
or compressed gas receptacle, so as to maintain the requisite pressure in the former,
any required signals can be given by opening and closing the cocks or valves of the
sounding instruments or the cock or valve of the communicating pipe.
In some cases two receptacles or bottles containing the liquefied or compressed gas
may be connected to the charging tube of the main receptacle, so that when the one
bottle becomes more or less exhausted, there may be no interruption of the supply,
the second bottle being then used while the empty one is removed and replaced by a
charged one.
Instead of fixing the sounding instruments on a separate box as described, they
may be fixed directly on the main receptacle, but we prefer the former arrangement,
as being more convenient and as avoiding the weakening of the vessel by forming a
number of apertures therein.

page_text: The liquefied gas we employ by preference for the purposes of our invention is
carbonic acid, but oxygen, hydrogen, or other condensible gases may be used.
Fig. 1 of the accompanying drawing shews a perspective view of one arrangement
of our above described improved apparatus, Fig. 2 shews an enlarged sectional plan
of the connection with the vessels charged with compressed gas, and Fig. 3 shews an
enlarged plan of the part of the apparatus carrying the signalling instruments.
A is a strong metal vessel by preference of spherical or cylindro-spherical form,
from the centre of which rises a pipe B having a safety valve C, and to which is
attached a branch pipe D terminating in a head E.
This head contains a branched passage, on each part of which is a shut-off valve F F¹
and which terminates in two screw unions G G¹ by which it is attached to one of the
strong receptacles H H¹ containing compressed or liquefied gas, which are of well
known construction.
The vessel A has an aperture in which is fixed the branch I of a pipe J, adapted to
carry the signalling instruments, such as an ordinary steam whistle as shewn at K, or
a horn, siren, &c., the pipe J being provided with a number of stoppered openings L
to which such instruments may be attached. M is a shut off valve through which the
interior of the vessel A can be made to communicate with the signalling instruments
when it is forced open against the pressure by means of the long lever N. When two
or more instruments are attached to the pipe J, each one is provided with a valve and
lever such as M and N.
In operating with this apparatus, the vessel A is first charged with gas under
pressure from one or other of the receptacles H H the corresponding valves being
opened for this purpose until the pressure gauge O indicates that the desired pressure
has been reached in A.
The inlet valves are then shut off and the signalling is effected by opening the
escape valve M by the lever N at such intervals as may be required.
When the pressure in the vessel A has sunk to a certain degree indicated by the
pressure gauge, the inlet valves of the receptacles H or H' are again opened to admit
a fresh charge, and so on, until the one or the other receptacle H or His exhausted.
The shut off valve F or F' to this receptacle is then closed and the receptacle is
disconnected, to be replaced by a freshly charged one, the apparatus being in the
meantime worked by charges from the other receptacle.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed we declare that what we claim is :-
1. In apparatus for signalling by sound the combination of a strong vessel having
attached to it either directly or indirectly sounding instruments, with one or more
detachable receptacles charged with compressed or liquefied gases which are admitted
to the first named vessel through shut off valves, substantially as herein described.
2. In apparatus for signalling by sound, the combination of a strong vessel charged
with compressed gases, one or more sounding instruments communicating therewith
through shut off valves operated by levers, a branched pipe with shut off valves adapted
for connection with one or more receptacles charged with compressed or liquefied
gases, a safety valve for preventing excess of pressure in the first named vessel, and
a pressure gauge for indicating the pressure therein substantially as herein described.
L
1007
ABEL & IMRAY,
Agents for the Applicants.