An Improved Method of Preparing a Powder applicable for Use in the Manufacture of Detergents and Dentifrices and for other purposes.
Year: 1896

page_text: Date of Application, 24th Jan., 1896
Complete Specification Left, 20th July, 1896-Accepted, 3rd Oct., 1896
PROVISIONAL SPECIFICATION.
An Improved Method of Preparing a Powder applicable for Use in
the Manufacture of Detergents and Dentifrices and for other
purposes.
I EDWARD JOHN THEODORE DIGBY of No. 110 Queen Victoria Street
London in the County of Middlesex Gentleman, do hereby declare the nature of
this invention to be as follows:-
This invention relates to an improved method of preparing oyster shells into
such a form as to produce a preparation which will be most valuable as a detergent
for use in the manufacture of various articles of commerce such for example as for
wool washing, type cleansing, wine and beer refining, boiler fluid, (anti-corrosive)
a dentifrice, plate powder or composition used by gold and silver metal workers,
and for other such like purposes.
I carry my invention into effect in the following manner.
. I take a given quantity of oyster shells which I place in a suitable vessel and
cover the same with a solution of hot water and caustic alkali in the proportion of
about six pounds of caustic alkali to about one ton of oyster shells.
The oyster shells are allowed to remain in the above mentioned fluid until the
dark covering or outer part of the shell can be easily removed by scrubbing the
same with a brush. Or the dark covering can be automatically removed by a
suitable machine.
The shells are afterwards placed in a drying room at about 200 degrees F. till
the sap or moisture contained in the shells is evaporapted. The shells are then
placed in a suitable apparatus and reduced to an impalable powder by means of
percussion.
Dated this 20th day of January 1896
WILLIAM HENRY BARACLOUGH,
36 Temple Street, Birmingham, Agent for the Applicant.
An Improved Method of Preparing a Powder applicable for Use in
the Manufacture of Detergents and Dentifrices and for other
purposes.
I, EDWARD JOHN THEODORE DIGBY, of No. 110 Queen Victoria Street,
London, in the County of Middlesex 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 :-
This invention relates to an improved method of preparing oyster shells into
such a form as to produce a preparation which will be most valuable as a detergent
for use in the manufacture of various articles of commerce, such for example as for
wool-washing, type cleansing, wine and beer refining, boiler fluid anti-corrosive,
a dentifrice, plate powder, or other composition used by gold and silver metal
workers, and for other such like purposes.

page_text: I carry my invention into effect in the following manner :-
I take a given quantity of oyster shells which I place in a suitable vessel and
cover the same with a solution of hot water and caustic alkali in the proportion of
about 6 pounds of caustic alkali to about 1 ton of oyster shells.
The oyster shells are allowed to remain in the above mentioned fluid until the
dark covering or outer part of the shell can be easily removed by scrubbing the
same with a brush. Or the dark covering can be automatically removed by a
suitable machine. The shells are afterwards placed in a drying room at about
200 degrees F. till the sap or moisture contained in the shells is evaporated. The
shells are then placed in a suitable apparatus and reduced to an impalpable powder
by means of percussion.
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 is :--
The improved method of preparing a powder from the oyster shells applicable
for use in the manufacture of detergents and dentifries and for other purposes
substantially as and in the manner herein before described and treated as herein-
before set forth.
Dated this 1st day of July 1896.
WILLIAM HENRY BARACLOUGH,
36, Temple Street, Birmingham, Agent for the Applicant.