Improvements in Apparatus for Ejecting Ashes and other Refuse and Water from the Holds of Ships, and from other Places.
Year: 1894

page_text: Date of Application, 30th June, 1894
Complete Specification Left, 1st Apr., 1895-Accepted, 8th June, 1895
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Ejecting Ashes and other Refuse
and Water from the Holds of Ships, and from other Places.
I, FRANCIS JAMES TREWENT of 43 Billiter Buildings, Billiter Street, in the
City of London, Naval Architect, do hereby declare the nature of this invention
to be as follows:-
My invention has reference to apparatus of the character of that described in
Specification No. 7080 of 1892 for ejecting ashes and other refuse and water from
the holds of ships.
The said Specification describes an apparatus consisting of a receptacle for ashes
or refuse, a jet pipe fitted with a valve or cock located in close proximity to the
jet nozzle of the pipe, and a discharge pipe connected to the bottom of the
receptacle for discharging the ashes or refuse and water overboard; the operation
being that the ejector pipe is first charged with water by means of a pump, the
valve or cock being kept closed until a high pressure has been created; then the
cock is opened so that the high pressure or full head of water impinges upon
the mass of ashes or refuse which being thrown into the receptacle fall through the
same to the base of the discharge pipe, the result being that the ashes encounter
the current or jet of water from the ejector nozzle and by the force of this jet
assisted by the rush of air into the receptacle are carried with the water up the
discharge pipe and discharged overboard.
The chief objects of the present improvements are to better insure the discharge
of the ashes or other refuse and water, to lessen the friction of the ashes on the
discharge pipe and to construct and fit the apparatus so that it will effect the
discharge through a ship's bottom or below the water line instead of above
the water line as hitherto.
For the purpose of better ensuring the discharge of the ashes or refuse and
water, I provide at various parts of the discharge pipe, between the receptacle
and the final outlet, one or more nozzles connected to a jet pipe which is supplied
with water under pressure from a pump the amount of water ejected being
regulated by a cock or valve on the pipe in close proximity to the nozzle or
nozzles. Preferably one of these nozzles or sets of nozzles is situated at or near
the usual bend of the discharge pipe so that by reducing the friction of the ashes
against the upper side of the bend it will prevent the rapid wear that has hitherto
taken place at that part.
By means of these nozzles at various parts of the discharge pipe and supplied
with water under pressure the discharge of ashes or other refuse and water from
the vessel is greatly assisted. The nozzles may be used independently of each
other and in connection or not with the usual nozzle at the base of the discharge:
pipe. If only light refuse or water has to be discharged the nozzle or nozzles at
the bend of the discharge pipe will be sufficient, when supplied with water under
pressure, to effect the discharge.
Another part of my invention consists in a special construction of the jet nozzles
whether used at the base of the discharge pipe or at other parts thereof. I form
these nozzles with two or more jets or outlets; the water under high pressure is
thus better able to eject the ashes or other refuse and water than when the nozzles
have only one jet as hitherto, .while less pump power is required to eject the same

page_text: amount. Preferably I make this nozzle with a central jet or opening surrounded
by three or more other jets or openings of any suitable form.
In order to effect the discharge of the ashes or refuse and water below the
water line, I lead the upper end of the discharge pipe to an opening in the ship's
side, say a few feet below the water line, and fit this end of the pipe with a valve
or cock. At a convenient part of the pipe below the usual bend I provide a clack
or other valve having a lever or device for working it. An air inlet valve is also
preferably fitted to the outlet pipe, between the clack or other valve and the valve
or cock on the ship's side. The discharge pipe has one or more jet nozzles at or
near the bend, and if necessary other nozzles at the base and other parts of same.
To put the apparatus into operation, the cock or valve at the upper end of the
pipe is opened, the clack valve at first remaining closed. Water under pressure is
then forced through the nozzle or nozzles in the bend, the clack valve is next
opened and the other nozzle or nozzles put into operation. The ashes or refuse
supplied to the receptacle are thus ejected from the vessel through the discharge
pipe below the water line.
In cases where it is desired to eject the ashes and refuse through the ship's bottom
in line with or below the level of the bottom of the receptacle, I carry the
discharge pipe through the ship's bottom and fit it with a valve or cock, and 1 fit
a clack or other valve to the bottom of the receptacle. One or more nozzles for
admitting water under pressure to the discharge pipe are provided. An air inlet
valve is also preferably provided on the outlet pipe between the valve or clack at
the bottom of the receptacle and the cock or valve on the ship's side. The
operation is substantially the saine as is hereinbefore described with reference to
discharging the ashes through the ship's side below the water line.
In all cases the apparatus may be provided with a branch pipe or by-pass, as
described in the Specification herein before referred to, to enable the discharge
pipe to be used for the discharge of bilge water when the apparatus is not in use
for ejecting ashes or refuse.
Although I have only described the apparatus as applicable to ejecting ashes
and other refuse and water from the holds of ships it is also applicable to
discharging ashes or refuse from other places where a sufficient supply of water is
available as for instance from buildings such as mills where the furnaces and
boilers are below the ground level.
Dated this 30th day of June 1894.
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London, Patent Agents.
Improvements in Apparatus for Ejecting Ashes and other Refuse
and Water from the Holds of Ships, and from other Places.
1, FRANCIS JAMES TREWENT of 43 Billiter Buildings, Billiter Street in the
City of London, Naval Architect, 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 invention has reference to apparatus of the character of that described in
Specification No. 7080 of 1892 for ejecting ashes and other refuse and water from
the holds of ships.
The said Specification described an apparatus consisting of a receptacle for ashes
or refuse, a jet pipe fitted with a valve or cock located in close proximity to
the jet nozzle of the pipe, and a discharge pipe connected to the bottom of the
receptacle for discharging the ashes or refuse and water overboard, the operation

page_text: being that the ejector pipe is first charged with water by means of a pump, the
valve or cock being kept closed until a high pressure has been created; then the
cock is opened so that the high pressure or full head of water impinges upon
the mass of ashes or refuse which being thrown into the receptacle fall through the
same to the base of the discharge pipe, the result being that the ashes encounter
the current or jet of water from the ejector nozzle and by the force of this jet
assisted by the rush of air into the receptacle are carried with the water up the
discharge pipe and discharged overboard.
The chief objects of the present improvements are to better ensure the discharge
of the ashes or other refuse and water, to lessen the friction of the ashes on the
discharge pipe and to construct and fit the apparatus so that it will effect the
discharge through a ship's bottom or below the water line instead of above
the water line as with the apparatus described in the said Specification No. 7080
of 1892.
For the purpose of better ensuring the discharge of the ashes or refuse and
water I provide at various parts of the discharge pipe between the receptacle and
the final outlet one or more nozzles or sets of nozzles connected to pipes which are
supplied with water under pressure from a pump the amount of water ejected being
regulated by a cock or valve on the pipe in close proximity to the nozzle. Preferably
one or more of these nozzles or sets of nozzles are situated at or near the usual
bend or bends of the discharge pipe so that the water discharged at this point will
reduce the friction of the ashes against the upper side of the bend and therefore
prevent the rapid wear that has hitherto taken place at that part.
Figure 1 of the accompanying drawings is a side elevation of an ash or refuse
ejecting apparatus of the character of that described in the said former
Specification No. 7080 of 1892 but provided according to the present invention
with nozzles at various parts of the discharge pipe between the ash receptacle and
the final outlet as hereinbefore described. A is the ash receptacle and B is the
discharge pipe to the lower part of which the lower part of the receptacle A is
connected. C is the jet nozzle at the bottom of the discharge pipe B, and D is the
jet pipe to which the nozzle C is fitted. E is a valve or cock on the pipe D.
F is a drain cock and G an air inlet valve to the pipe B. The parts marked A
to G inclusive are the same or practically so as the corresponding parts of the
apparatus described in the said former Specification. H₁ H2 H3 are nozzles which
I provide at various parts of the discharge pipe B. Each of these nozzles is
connected to a pipe 1' 12 13 supplied with water under pressure and each of these
pipes has a cock or valve J1 J2 J3 in close proximity to the nozzle to allow of the
amount of water ejected being regulated. It will be seen that the nozzles H²
and H are situated at or near the bend of the discharge pipe B, so that the water
discharged from these nozzles will reduce the friction of the ashes against the
upper side of the bend and therefore prevent the rapid wear that has hitherto
taken place at this part.
and
By means of the Bozzles H H H³ at various parts of the discharge pipe
supplied with water under pressure the discharge of the ashes or other refuse and
water from the vessel is greatly assisted. The nozzles may be used independently
of each other and in connection or not with the usual nozzle C at the base of the
discharge pipe. If only light refuse has to be discharged the nozzle or nozzles at
the bend of the discharge pipe will be sufficient, when supplied with water under
pressure, to effect the discharge.
Another part of my invention consists in a special construction of the jet nozzles
whether used at the base of the discharge pipe or at other parts thereof. I form
the nozzles with two or more jets or outlets; the water under high pressure is thus
better able to eject the ashes or other refuse and water than when the nozzles
have only one jet as hitherto. Preferably I make this nozzle with a central
jet or opening surrounded by three or more other jets or openings of any suitable
form.
Figure 2 is a longitudinal section showing a jet nozzle constructed according to

page_text: this part of my invention and fitted to the bottom of the discharge pipe B but
any of the jet nozzles employed in my apparatus can be similarly constructed.
Figure 3 is a face view of the nozzle. It will be seen that this nozzle has a
central circular jet or opening surrounded by four other equidistant circular jets or
openings. Figures 4 and 5 are similar views to Figures 2 and 3 and show a nozzle
with a central circular jet or opening surrounded by four oblong jets or openings.
The jets or openings may be of any other suitable form. Figure 6 shows one of
these nozzles in position together with the receptacle A, valves E and G, drain
cock F and parts of the discharge pipe B and ejector pipe D.
In order to effect the discharge of the ashes or refuse and water below the water
line I lead the upper end of the discharge pipe B to an opening in the ship's side
as shown at K Figure 7 say a few feet below the water line and I fit this end of
the pipe with a valve or cock L. At a convenient part of the pipe B between the
valve L and the receptacle A, I provide a clack or other valve M having a lever
or device N for working it. An air inlet valve P is also preferably fitted to the
pipe B between the valve M and the valve L, the valve P being a non return valve.
The discharge pipe B has one or more jet nozzles H2 H3 at or near the bend and
in addition to the nozzle C at the base it may have other nozzles at other parts of
same such as at H. To put the apparatus into operation, the cock or valve Lat
the upper end of the pipe is opened, the clack valve M at first remaining closed.
Water under pressure is then forced through the nozzle or nozzles H² H³ at the
bend, the clack valve M is next opened and the other nozzle or nozzles C and H!
put into operation. The ashes or refuse supplied to the receptacle are thus ejected
from the vessel through the discharge pipe below the water line.
In cases where it is desired to eject the ashes or refuse through the ship's bottom
in line with or below the level of the bottom of the receptacle, I carry the discharge
pipe. B through the ship's bottom as shown in Figure 8 and fit it with a valve or.
cock L and I fit a clack or other valve M to the bottom of the receptacle. One
or more nozzles C for admitting water under pressure to the discharge pipe are
provided: A non-return air inlet valve P is also preferably provided on the outlet.
pipe between the valve or clack M and the valve L. The operation is substantially.
the same as is herein before described with.reference to Figure 7.
In all cases the apparatus may be provided with a branch pipe or by-pass as
described in the Specification No. 7080 of 1892 hereinbefore referred to to enable
the discharge pipe B to be used for the discharge of bilge water when the apparatus
is not in use for ejecting ashes or refuse.
Although I have only described the apparatus as applicable to ejecting ashes
and other refuse and water from the holds of ships it is also applicable to discharging
ashes or refuse from other places where a sufficient supply of water is available as
for instance from buildings such as mills where the furnaces and boilers are below
the ground level..
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 in respect of apparatus of the character herein referred to for ejecting
ashes and other refuse and. water from the holds of ships and from other
places is :-
1. Fitting the discharge pipe of the apparatus with one or more jet nozzles or
sets of jet nozzles between the bottom of the said pipe and the final outlet
substantially as and for the purpose herein before described and represented in
Figure 1.
2. Fitting the discharge pipe of the apparatus with one or more jet nozzles or
sets of jet nozzles at or near the usual bend of the said pipe substantially as
and for the purpose herein before described and represented in Figure 1.
3. Constructing the jet nozzles of the apparatus with compound jets or outlets
substantially as and for the purpose herein before described with reference to
Figures 2 to 6.

page_text: 4. The construction or arrangement of apparatus substantially as hereinbefore
described and represented in Figure 7 whereby the ashes or refuse can be discharged
below the water line of a ship.
5. The construction or arrangement of apparatus substantially as hereinbefore
described and represented in Figure 8 whereby the ashes or refuse can be discharged
through a ship's bottom below the level of or in line with the bottom of the ash
or refuse receptacle.
Dated this 20th day of March 1895.
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London, Chartered Patent Agents.