AN IMPROVED METHOD OF PREVENTING AND RE- MOVING THE DEPOSIT OF SAND, MUD, OR SILT IN TIDAL RIVERS IN CERTAIN CASES, AND ALSO IN HARBOURS, DOCKS, BASINS, GUTS, OR OTHER CHANNELS COMMUNICATING WITH THE SEA THROUGH TIDAL RIVERS OR OTHERWISE, THE SAME BEING APPLICABLE
Year: 1852

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
COLE, of Birkenhead, in the County of Chester, Architect, and ALFRED
HOLT, of Liverpool, in the County of Lancaster, Civil Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent under the Great Seal of the United Kingdom of Great Britain and
Ireland, bearing date at Westminster, the Twenty-fourth day of March,
in the year of our Lord One thousand eight hundred and fifty-two, did give
and grant unto us, the said William Cole and Alfred Holt, our exors,
admors, and assigns, Her especial license, full power, sole privilege and
authority, that we, the said William Cole and Alfred Holt, our exors,
admors, and assigns, and every of us, by ourselves, or by our deputy or
deputies, servants or agents, or such others as we, the said William Cole
and Alfred Holt, our exors, adiñors, or assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during
the term of years therein expressed, should and lawfully might make, use,
exercise, and vend, within that part of Her United Kingdom of Great
Britain and Ireland called England, Her Dominion of Wales, and Town
of Berwick-upon-Tweed, and in the Islands of Jersey, Guernsey, Alderney,
Sark and Man, and also in all Her Majesty's Colonies and Plantations
abroad, our Invention of "AN IMPROVED METHOD OF PREVENTING AND RE-
MOVING THE DEPOSIT OF SAND, MUD, OR SILT IN TIDAL RIVERS IN CERTAIN CASES,
AND ALSO IN HARBOURS, DOCKS, BASINS, GUTS, OR OTHER CHANNELS COMMUNICATING
WITH THE SEA THROUGH TIDAL RIVERS OR OTHERWISE, THE SAME BEING APPLICABLE

page_text: IN CERTAIN CASES TO OTHER RIVERS OR MOVING WATERS;" in which said Letters
Patent there is contained a proviso that if we, the said William Cole and
Alfred Holt, should not particularly describe and ascertain the nature of the
said Invention, and in what manner the same was to be performed, by an
instrument in writing under our hands and seals, or under the hand and
seal of one of us, and cause the same to be inrolled in Her Majesty's High
Court of Chancery within six calendar months next and immediately after
the date of the said Letters Patent, then the said Letters Patent, and all
liberties and advantages whatsoever thereby granted, should utterly cease,
determine, and become void, anything therein-before contained to the contrary
thereof in anywise notwithstanding.
:
NOW KNOW YE, that we, the said William Cole and Alfred Holt,
in compliance with the said proviso in the said Letters Patent contained,
do hereby declare the nature of our Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in
and by the following statement thereof, that is to say :-
Our method of preventing and removing the deposit of sand, mud, and
silt, consists in subjecting such deposit, or the water containing it, to the
action or agitation of water forced or injected into it from below, so that the
sand, mud, and silt shall be broken up or put into commotion, and held in
suspense and carried off by the receding tide, or by an artificial stream or
current, or by additional water acting so as to assist the momentum of the
deposit or water so acted on at the particular place. The water to be
employed for this purpose may, where the locality will permit, be derived
from a reservoir at as great an elevation above the bed of the harbour, dock,
dock gut, or other basin intended to be cleared, as the circumstances of each
particular case may admit of or require; or it may be supplied under pressure
by artificial means, as is well understood. At or below or near to the bed or
bottom of the harbour, dock, dock gut, or channel, which is liable to be silted up,
we place pipes, channels, or conduits of any suitable material, perforated in such
manner as to allow of the water being applied in jets or streams in all directions
to the deposit, or to the water containing the deposit, according to the locality
at which the action is required. By connecting mains between the head of
water and the before-mentioned pipes, channels, or conduits, water may be
applied at such time or state of the tide as the particular locality may admit of or
require. In ordinary tidal waters it will be found desirable to lay on the head
of water at half ebb tide, and to keep it on until low water or after low water,
in cases in which additional water for carrying away the deposit so disturbed
is available. If there be no existing head of water available for the purposes

page_text: above described, or artificial reservoir available for such purposes, the same
object may be effected by a forcing pump, or by retaining water under
pressure, as is well understood. Where inland rivers meet at or nearly at
right angles, a delta of sand, mud, or silt is usually formed at a short distance
below the junction; such delta may be removed and prevented from forming
by means of water conveyed to or against it, as above described.
Having now described the nature of our Invention, and in what manner
the same is to be performed, we wish it to be understood that we make no
claim to the exclusive use of any of the apparatus herein-before referred to,
except where the same is adapted and applied for the purposes above mentioned.
And we hereby declare that what we claim is the preventing and removing
deposit of silt, sand, and mud, by means of numerous shoots or jets of water
issuing under pressure into such deposit, or the water containing such deposit
in suspension, as above described.
In witness whereof, we, the said William Cole and Alfred Holt, have
hereunto set our hands and seals, the Eighteenth day of September,
in the year of our Lord One thousand eight hundred and fifty-two.
Signed, sealed, and delivered, by the
said William Cole and Alfred Holt,
in the presence of
WILLIAM (L.S.) COLE.
ALFRED (L.S.) HOLT.
Solicitors, Liverpool.
AND BE IT REMEMBERED, that on the Eighteenth day of September,
in the year of our Lord 1852, the aforesaid William Cole and Alfred Holt
came before our said Lady the Queen in Her Chancery, and acknowledged
the Specification aforesaid, and all and every thing therein contained and
specified, in form above written. And also the Specification aforesaid was
stamped according to the tenor of the Statute made for that purpose.
Enrolled the Twenty-third day of September, in the year of our Lord
One thousand eight hundred and fifty-two.