IMPROVED MEANS FOR GENERATING STEAM BY CHEMICAL AGENTS
Year: 1884

page_text: I, HENRY HARRIS LAKE, of the Firm of Haseltine Lake & Co., Patent Agents,
Southampton Buildings, London, in the County of Middlesex do hereby declare the
nature of said Invention for "IMPROVED MEANS FOR GENERATING STEAM BY
CHEMICAL AGENTS " 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 the generation of steam by means of chemical agents.
Exhaust steam has heretofore been utilized for generating steam by causing the
said exhaust steam to pass into a solution of caustic potash or caustic soda. The
absorption of steam, in this case develops a certain amount of caloric which can be
used for producing steam, by means of suitable apparatus.
According to the present Invention, the above object (generation of steam,) that
is to say, the treatment of water or steam by chemicals, and the formation of
hydrates can be effected more advantageously than by potash or soda, by means of
the following substances, viz:-Highly concentrated sulphuric acid and burnt lime,
which are particularly appropriate for this purpose.
In the treatment of water by sulphuric acid, as also in the above mentioned
treatment of water by potash and soda, it is necessary, after a certain amount of
water has been absorbed by these chemical agents, that this water should be
removed by being converted into steam.
Such operation is not necessary when using burnt lime, as the latter, by absorbing
water or steam is converted into slacked lime which can be directly used as such,
and consequently the cost of the operation is saved.
The slacked lime used in the development of caloric is converted again into burnt
lime; the value of such lime is therefore not diminished.
The immense advantage derived from using lime instead of potash and soda,
independently of the greater cost of the latter, is that the same are dangerous to
use by reason of their causticity when regenerated, and they may easily cause
considerable injury to the operatives who have to handle them.
When making use of lime a double boiler is required, one boiler containing
water from which steam is generated and the other containing the burnt lime.

page_text: . 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:-
The generation of steam by means of caloric produced by the conversion of burnt
lime into slacked lime, or the combination of sulphuric acid with water, and utilized
in suitable apparatus.

page_text: I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co, Patent Agents,
Southampton Buildings, London in the County of Middlesex, seek leave to amena
the specification of Letters Patent, No. 4295 of 1884, as shown in red ink in the
copy of the original specification hereunto annexed, that is to say :-
°
On page 1, line 14 erase the words "the following substances, viz :-Highly
concentrated sulphuric acid and".
On line 15 of the same page substitute the word "is" for the word "are".
On line 16 of the same page erase the words "the treatment of water by
sulphuric acid, as also in ".
On line 23 of the same page substitute the word "burnt" for "slacked" and the
word "slacked" for "burnt
"
•
On page 2 line 5 erase the words "or the combination of sulphuric acid with
water" and the comma preceding the same, and substitute therefor the words
by exhaust-steam ".
"
My reasons for making this amendment are as follows:-I have now reason to
believe that the parts desired to be struck out did not constitute a new and original
invention at the date of the Letters patent.

page_text: In the matter of the opposition thereto by Christian Heinzerling,
I determine, subject to appeal to, the Law Officer, that the amendments ought
not to be allowed in the manner proposed. I will allow the 'lines 14, 15 & 16 of
page 1 of the printed copy of the Specification to be amended as proposed; but
I cannot allow the transposition at line 23..
The amendment of the Claim must be limited to the substitution of the words
"by steam" for the words "or the combination of Sulphuric Acid with water."

page_text: I, HENRY HARRIS LAKE, of the Firm of Haseltine Lake & Co., Patent Agents,
Southampton Buildings, London, in the County of Middlesex do hereby declare the
nature of said Invention for "IMPROVED MEANS FOR GENERATING STEAM BY
CHEMICAL AGENTS and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
33
This Invention relates to the generation of steam by means of chemical agents.
Exhaust steam has heretofore been utilized for generating steam by causing the
said exhaust steam to pass into a solution of caustic potash or caustic soda. The
absorption of steam, in this case develops a certain amount of caloric which can be
used for producing steam, by means of suitable apparatus.
According to the present Invention, the above object (generation of steam,) that
is to say, the treatment of water or steam by chemicals and the formation of
hydrates can be effected more advantageously than by potash or soda, by means of
the following-substances, vis:-Highly-concentrated-sulphurie-acid-and burnt lime,
which are is particularly appropriate for this purpose.
In the treatment of water by sulphuric acid, as also in the above mentioned
treatment of water by potash and soda, it is necessary, after a certain amount of
water has been absorbed by these chemical agents, that this water should.be
removed by being converted into steam.
Such operation is not necessary when using burnt lime, as the latter, by absorbing
water or steam is converted into slacked lime which can be directly used as such,
and consequently the cost of the operation is saved.
..
The slacked lime used in the development of caloric is converted again into burnt
lime; the value of such lime is therefore not diminished.
The immense advantage derived from using lime instead of potash and soda,
independently of, the greater cost of the latter, is that the same are dangerous to
use by reason of their causticity when regenerated, and they may easily cause
considerable injury to the operatives who have to handle them.
When making use of lime a double boiler is required, one boiler containing
water from which steam is generated and the other containing the burnt lime.
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:
The generation of steam by means of caloric produced by the conversion of burnt
lime into slacked lime, or the combination of sulphuric acid-with-water, by steam
and utilized in suitable apparatus.
HASELTINE, LAKE & Co.,
For the Applicant.