IMPROVEMENTS IN MEANS OR APPARATUS TO BE EMPLOYED IN AND FOR EFFECTING THE CULTIVATION OF OYSTERS
Year: 1884

page_text: I ASTLEY PASTON PRICE of 47 Lincolns Inn Fields in the County of Middlesex
Gentleman do hereby declare the nature of said Invention for "IMPROVEMENTS
IN MEANS OR APPARATUS TO BE EMPLOYED IN AND FOR EFFECTING THE CULTIVATION
OF OYSTERS" to be as follows:-
Hitherto the cultivation of Oysters has been effected either by the employment
as spat arresting or collecting media of what is known as Cultch vizt Oyster
Shells or Cockle shells or of tiles or other similar materials placed on the bed of the
Oyster ground or upon the bed and foreshore of such ground or instead of
employing the above materials Hurdles or other devices have been placed at or
near the surface of the water covering the Oyster ground and upon such before
mentioned arrangement or arrangements the Oyster Spat is arrested and become
permanently attached thereto.
Now this Invention has for its object effecting the arresting and collecting of the
Oyster Spat which may exist in a floating condition in the body of the water that
is to say in that position which does not necessary come in contact with either the
Cultch or the tiles or the Hurdles or the before mentioned inedia and it consists in
the employment of Nets or netting constructed of vegetable fibre or material or of
metallic wire or other materials such net or netting being impregnated and coated
with an Hydraulic Cement or with other water resisting material such for example
as pitch tar bitumen or other similar substances the surface or surfaces of which
may be rendered uneven or rough by the application superficially of any rough or
coarse material such for example as burnt clay or hydraulic Cement or other water
resisting substance or material in a state of division. Nets or netting thus or
similarly prepared are placed either in a vertical oblique or horizontal position and
so buoyed and attached that they may move or swing with the tide or current in
order that the stream may pass or flow through the meshes or interstices of the net
or netting and thus bring the floating Oyster Spat in contact with the arresting
and collecting area or surface By the employment of such or similar arrangement
a greatly increased arresting area and collecting surface is presented whereby the
floating Oyster Spat is more advantageously and efficiently collected--The Oyster
spat thus collected when sufficiently matured may be removed or culled as is well
understood.
Dated this 1st day of Tonuori
J. HENRY JOHNSON,
Agent for the said Astley Paston Price,
47, Lincoln's Inn Fields,
London, W.C.

page_text: I ASTLEY PASTON PRICE of 47 Lincolns Inn Fields in the County of Middlesex,
Gentleman, do hereby declare the nature of said invention for IMPROVEMENTS IN
MEANS OR APPARATUS TO BE EMPLOYED IN AND FOR EFFECTING THE CULTIVATION
OF OYSTERS and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
Hitherto the cultivation of Oysters has been effected either by the employment
as spat arresting or collecting media of what is known as Cultch videlicet Oyster
shells or Cockle shells or of tiles or other similar materials placed on the bed of the
Oyster ground or upon the bed and foreshore of such ground or instead of
employing the above materials Hurdles or other devices have been placed in and at
or near the surface of the water covering the Oyster ground in order that the
Oyster spat may be arrested and become permanently attached thereto.
Now this Invention has for its object effecting the arresting and collecting of the
Oyster spat which may exist in the body of the water that is to say in that portion
which does not necessarily come in contact with either the cultch or the tiles hurdles
or other devices placed as before mentioned and it consists in the employment of
Nets or netting or their equivalent composed or constructed of vegetable fibre or
material or of metallic wire or other material netted interwoven or interlaced such
net or netting or. interwoven or interlaced material or device being coated with
hydraulic cement or with other water resisting material such for example as an
insoluble Silicate of Lime or coated with other water resisting material such for
example as pitch tar bitumen or other similar substances The surface or surfaces of
the coated materials are preferably rendered uneven or rough by the application
superficially of any rough or coarse water resisting material such for example as
burnt clay or hydraulic cement or other water resisting substance or material in a
state of division Nets or netting or interwoven or interlaced device or devices
thus prepared are placed in the water either in a vertical oblique or horizontal
position and so buoyed and held that they may move or swing with the tide or
current in order that the stream may pass or flow through the meshes or interstices
of the net or netting or their equivalent and thus bring the Oyster spat in contact
with the arresting and collecting area or surface or the nets netting or their
equivalents may be otherwise fixed in position By the employment of such
arrangements a greatly improved arresting area and collecting surface is presented
whereby the oyster spat is more advantageously and efficiently collected in a
manner and to an extent not previously attained.
My Invention may be carried out in the following manner.
I cause the nets or netting or their equivalents composed or constructed as
herein before described to be coated with either Hydraulic Cement or with other
water resisting material or compound and I prefer when employing Hydraulic
Cement or similar water resisting material or compound to cover the Hydraulic
Cement or other water resisting material or compound before setting with
Hydraulic Cement or with other water resisting substance or material in a state of
division such for example as Burnt Clay sand or other similar or equivalent
material my object being to obtain a roughened surface so as to more effectually
arrest and collect the oyster spat. When the hydraulic cement or other water
resisting material has become set the nets netting or their equivalents so prepared
may be placed in the water in any desired position.
Or instead of employing Hydraulic Cement as before mentioned I impregnate
the net or netting or their equivalent when of a vegetable substance or material

page_text: with a solution of a soluble salt of lime or of the alkaline earths or metals such for
example as Chloride of Calcium and subsequently bring the same in contact with a
solution of a soluble silicate such for example as silicate of soda in order that an
insoluble silicate of lime or of other base may be formed in and upon the surface or
surfaces of the material operated upon.
It will be understood that a solution of the soluble silicate of soda may be firstly
used and the solution of the soluble lime salt or of the soluble alkaline earths or
metals be subsequently employed.
Instead of employing Hydraulic Cement or other water resisting materials the
nets or netting or their equivalents may be coated with either Tar Bitumen or
other similar water resisting substances and the surfaces of the coated materials be
rendered rough and uneven by applying thereto water resisting materials in a state
of division such for example as Hydraulic Cement Burnt Clay Sand or other
equivalent material.
The Nets or Netting or their equivalents as before mentioned so constructed and
prepared may then be placed at or before the period of the year when oysters emit
their spat in the water either in a vertical horizontal or oblique position the same
being buoyed or held in such a manner as that they shall be immersed or
intermittently immersed in and be subjected to the action of the Tide or Current
or they may be permanently held in such a manner as to be constantly immersed.
By the employment of my Invention a greatly increased arresting and collecting
area or surface is presented and the Oyster Spat is more effectually arrested and
obtained.
The Oyster Spat thus collected when sufficiently matured is removed or culled
froin the nets or netting or their equivalent as is well understood.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is.
First. The manufacture and preparation of materials as hereinbefore mentioned
so as to render them suitable for arresting and collecting oyster spat by coating the
same with hydraulic cement or with other similar water resisting material or
materials so as to render the surface or surfaces thereof capable of arresting and
collecting oyster spat substantially in the manner hereinbefore described.
Second. The preparation of Vegetable Fibre or Materials by the employment of
soluble Salts or compounds of the metals or of the Alkaline earths in conjunction
with a soluble silicate so as to form an insoluble silicate in and upon the Vegetable
Fibre or materials hereinbefore mentioned and for the purposes hereinbefore
described.
Third. The manufacture and preparation of Materials as herein before mentioned
by coating the same either with Tar Bitumen or other equivalent water resisting
material and the rendering the surface or surfaces of the same rough and uneven so
as to be capable of arresting and collecting oyster spat substantially in the manner
hereinbefore described.
Dotad bin 20th day of Sontember 1901