AN IMPROVED METHOD OF AND APPARATUS FOR PREVENTING THE DEPOSIT OF SAND, MUD, OR THE LIKE IN RIVERS OR OTHER PLACES WHEREIN IT IS DESIRED TO MAINTAIN THE DEPTH OF WATER
Year: 1883

page_text: LETTERS PATENT to William Robert Lake, of the firm of Haseltine, Lake,
.
& C° Patent Agents, Southampton Buildings, London for an Invention of
"AN IMPROVED METHOD OF AND APPARATUS FOR PREVENTING THE DEPOSIT OF
SAND, MUD, OR THE LIKE IN RIVERS OR OTHER PLACES WHEREIN IT IS DESIRED
TO MAINTAIN THE DEPTH OF WATER communicated to him from abroad by
Henry Edward Hargreaves of Rio de Janeiro, Brazil, Civil Engineer
"
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 7th March 1883.
WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, and Co., Patent Agents,
Southampton Buildings, London, "AN IMPROVED METHOD OF, AND APPARATUS
FOR, PREVENTING THE DEPOSIT OF SAND, MUD, OR THE LIKE, IN RIVERS OR
OTHER PLACES WHEREIN IT IS DESIRED TO MAINTAIN THE DEPTH OF WATER
"
[A communication to him from abroad by Henry Edward Hargreaves of Rio de
Janeiro, Brazil, Civil Engineer]
This Invention relates to an improved method of and apparatus for preventing
the deposit of sand, mud or the like. in a channel across a bar or shoal at the.
mouth of a river, or in other places wherein it is desired to maintain a given depth
of water.
:
According to the said Invention one or more pipes or tubes are laid at the depth
required to be maintained. These tubes are perforated so that water can be caused
to issue therefrom in a number of jets the action of which will keep the sand or mud
from depositing within the range of action of the said jets.
These tubes are connected by a main pipe or pipes to suitable machinery or
apparatus for forcing water which will keep the jets at the required pressure.
}
In dealing with a bar, shoal or the like of sand, mud, or other loose soil the
section and depth required are first obtained by dredging or other means according
to circumstances, and the pipes are then laid with the apertures for the jets turned
upwards. These pipes are connected by a main pipe or pipes with an accumulator
pump or reservoir from which a suitable head of water may be obtained.
By the action of the aforesaid jets of water no sand, mud, or like material can
be deposited by any natural action therefore the application of water under pressure
in the manner above described at the required depth in any channel will keep it
always open for navigation.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Robert Lake in the Great Seal Patent Office on the
7th September 1883.
"
WILLIAM ROBERT. LAKE, of the firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London AN IMPROVED METHOD OF, AND APPARATUS
FOR, PREVENTING THE DEPOSIT OF SAND, MUD, OR THE LIKE IN RIVERS OR OTHER
PLACES WHEREIN IT IS DESIRED TO MAINTAIN THE DEPTH OF WATER"
A com-
munication to me from abroad by Henry Edward Hargreaves, of Rio de Janeiro,
Brazil, Civil Engineer,
This invention relates to an improved method of, and apparatus for, preventing
the deposit of sand, mud, or the like and the consequent diminution of the depth
of water in rivers or other places
I accomplish this result by causing water to constantly issue in a series of jets from
one or more perforated pipes or tubes at the bottom of the river or other channel.
For this purpose one or more pipes or tubes are laid in the river or other place
at the depth required to be maintained. These pipes or tubes are perforated so
that water can be caused to issue therefrom in a series of jets, which will prevent
the sand or mud from depositing within the range of their action; and the said
pipes or tubes are connected to suitable machinery or apparatus capable of
maintaining a sufficient pressure of water in the said pipes to cause the jets to
issue with the required force:
In applying the said invention, for example, to a channel through or across a
bar of sand, mud, or other loose soil, the desired sectional area and depth of the
channel are first obtained by dredges or other suitable means, and the perforated
pipes are then laid at the bottom of the channel with the apertures or perforations
in such a position that the jets of water will be directed upwards. These pipes are
connected by a main pipe or two or more main pipes with any suitable apparatus,
such as an accumulator, pump, or reservoir, whereby water may be caused to flow
constantly into the perforated pipes and to issue from the perforations thereof in
jets of sufficient force to prevent the sand, mud, or other material from being
deposited by any natural action or process.
It will therefore be seen that, by the application of water under pressure at the
required depth in the manner above described, I am enabled to keep a channel
always open for navigation, and I accomplish this result without otherwise altering
in any manner the natural character of the river or other place where the above
described method is employed.
In the accompanying drawing
Figure 1 is a transverse section of a channel through or across a bar, with
apparatus constructed according to this invention applied thereto, and
Figure 2 is a plan of the same
A represents the bar and B the channel through or across the same.
O Care
the pipes or tubes laid at the required depth and having the perforations c.
D is
the main pipe connecting the pipes C with an accumulator E which is arranged in
any suitable manner on the adjacent shore.
It is evident that, if a sufficient pressure of water be constantly maintained in 4
the pipes C; the mud, sand or other material will be prevented from depositing in,
and filling up, the channel B. The continuous tendency of the said material to
deposit is opposed by the continuous action of the jets of water.
Having thus fully described the said invention as communicated to me by my

page_text: foreign correspondent, and the manner of performing the same, I wish it understood
that I claim >
The above described improved method of preventing the deposit of sand, mud,
or other substances in a river or channel, by the employment of apparatus whereby
jets of water are discharged from one or more pipes or tubes laid along the bed or
bottom of the said river or channel, substantially as set forth.
In witness whereof I the said William Robert Lake have hereunto set my hand
and seal this seventh day of September in the year of our Lord One thousand
eight hundred and eighty three