Ejector Dredger.
Year: 1889

page_text: Date of Application, 23rd Dec., 1889
Complete Specification Left, 23rd Sept., 189C-Accepted, 13th Dec., 1890
PROVISIONAL SPECIFICATION.
.
Ejector Dredger.
I, CHARLES JULIUS BALL, of 37 Lombard Street, City of London, Civil Engineer,
do hereby declare the nature of this invention to be as follows :-
This invention has for its object to tear up and carry away loose material by means
of an induced current of water which is caused, either by gravitation steam jet, or
more preferably and usually by a high pressure pump, specially by a rotary or
centrifugal pump.
To obtain this result, I use a combination of pipes generally in one casting,
connected on one side with the jet of the pump and at the other with the delivery of
the apparatus, a third branch connects it with a suction pipe which is carried to the
material under water to be raised or dredged up.
The injector pipe is generally able to move forward and backwards in the casting
by means of a double gland, one on the pump delivery, one on the general delivery,
a moveable tube made of thin metal and with a ring in its middle. As the material
dredged in coming up the suction pipe, which is generally long, divides itself in
dredged material at the bottom of the pipe and nearly pure water, or water without
stones or grit at the top of the same pipe, I sometimes cause the injecting pump to be
supplied from the top of the said suction pipe before it bends to receive the injector,
and in such cases I interpose in most cases, a vessel of a V or pyramidal, or other
form, point downwards, so that the heavy material dredged gravitates to the bottom of
this or pyramid while the higher parts of the pyramid or V box supply the
injecting pump. A grating may be interposed in this box above the entrance of the
suction pipe into it, so as to prevent effectually any stones etc. from passing into
the injecting pump. The bottom of the said V box opens into the ejector, so that the
dredger material falls into the current of water from the pump, and is thus
expelled.
In some cases I make use of the tendency of a rotary movement to collect such
materials as dredgings and employ a double cone box, like a buoy, receiving the
suction pipe at its widest part or equator, the lower point opening into the ejector and
the upper point, the apparatus standing vertically, communicating with the injecting
pump. The ejector is provided with two large trap doors, the one opposite the branch
by which the dredgings arrive into it, the other opposite the ejector itself from the
pump and by means of these openings it is always easy to remove or dissipate any
casual obstruction. The nozzle at the end of the suction pipe has the form of a
lengthened narrow rectangle where it touches the ground and has the section of the
suction piping where it joins the latter. I sometimes take the high pressure jet of
water down to the nozzle and eject it there.
As these machines are used from board ship or barges and in rough weather it is
necessary to provide for taking up the rolling and pitching of the ship, to do this I
employ the following:
The suction pipe overboard instead of being hard attached to the boat is connected
to the system on board by means of a pipe of a reasonable length connected by a ball
joint or by a short length of india rubber hose.
Dated this 23rd day of December 1889.

page_text: Ejector Dredger.
I CHARLES JULIUS BALL of 37 Lombard Street, City of London, Civil Engineer,
do hereby declare the nature of my said 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 has for its object to tear up and carry away loose material by means
of an induced current of water which is caused either by gravitation steam jet, or
more preferably and usually by a high pressure piston pump, or more specially by a
rotary or centrifugal pump.
To obtain this result I use a combination of pipes A, B, C, generally in one casting
as at Figure 1, connected on one side B with the jet D of the pump E and at the
other C with the delivery pipe F of the apparatus, a third brancb A connects it with
a suction pipe G which is carried to the material under water to be raised or
dredged up.
The ejector pipe is movable forward and backward in the casting B by means of a
double gland, one I on the pump delivery, one J on the general delivery and
containing a tube D of thin metal with a ring K in its middle. As the material is
dredged in coming up the suction pipe G it passes into the pipe C and nearly pure
water, or water without stones or grit from the pump E forces the debris out at the
top of the same pipe at F. I sometimes cause the ejecting pump to be supplied from
the top of the said suction pipe as at Figure 2, before it bends to receive the ejector and
in such cases I interpose in most cases a vessel L of a V or pyramidal, or other form,
point downwards, so that the heavy material dredged gravitates to the bottom of
this ✓ or pyramid while the higher parts of the pyramid or V box supply the
pump E.
A grating M may be interposed in this box above the entrance of the suction pipe G
into it so as to prevent effectually any stones etc. from passing into the ejecting
pump E. The bottom of the said V box opens into the ejector so that the dredged
material falls into the current of water from the pump and is thus expelled
through F.
In some cases I make use of the tendency of a rotary movement to collect such
materials as dredgings and employ a receiver, preferably a double cone box N,
Figures 3 and 4 like a buoy or cylinder receiving tangentially the suction pipe Gat
its widest part or equator, the lower point opening into the ejector. This apparatus
stands vertically, communicating with the ejecting pump. The ejector is provided
with two large trap doors P, P, the one opposite the branch by which the dredgings
arrive into it, the other opposite the ejector itself from the pump and by means of
these openings it is always easy to remove or dissipate any casual obstruction. The
nozzle at the end of the suction pipe G has the form of a lengthened narrow
rectangle (see Figure 1) where it touches the ground and has the section of the suction
piping where it joins the latter.
I sometimes take the high pressure jet of water down to the nozzle, and eject it
there, see Figure 5.
As these machines are used from board ship or barges and in rough weather it is
necessary to provide for taking up the rolling and pitching of the ship; to do this I
employ the following
The suction pipe overboard instead of being fixedly attached to the boat is
connected to the system on board by means of a pipe of a reasonable length connected
by a ball joint R, Figure 2, or by a short length of telescopic tubing S, of india rubber
hose, or other flexible connection. S' is a spring cushion to prevent injury to the
pipe G during rough weather and serving also as a flexible support thereto.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and the manner in which the same is to be performed, I declare that what I
claim is :-
1. The apparatus shown on the annexed drawings as an ejector dredger, acting in
the manner described.
2. The arrangement of apparatus sbown at Figure 1, and also that shown at
Figure 4, as and for the purpose explained.
3. The apparatus shown at Figure 2 for the purpose described.
4. The apparatus referred to with reference to Figure 3 of the annexed
drawings.
5. The means for breaking up concussions and thereby prevent injury to the
apparatus during rough weather, as described.
This 23rd day of September 1890.
H. GARDNER,
Patent Agent, 166, Fleet Street, London, Agent for the said C. J. Ball.