Improvements in the Production of Glass-making Material.
Year: 1891

page_text: Date of Application, 25th Mar., 1891
Complete Specification Left, 24th Dec., 1891-Accepted, 30th Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Production of Glass-making Material.
I, WALTER Walker, of 132 Adelaide Road, London, Engineer, do hereby
declare the nature of this invention to be as follows:-
The present invention has reference to the process described by me in my
Complete Specification No. 2019 dated 4th February 1891, for the production of
silicates for making glass, wherein I described the use of a mixture consisting of the
following ingredients: common sand, chloride of calcium, and chloride of sodium
(common salt).
This mixture gives exceedingly good results, but I have since discovered, owing
to further experiments instituted, that I can carry out the above mentioned process
when so desired, or, in cases where I cannot procure the chloride of calcium easily
or cheaply, by substituting for it lime, which can always be readily and cheaply
obtained.
Now, according to my present process I heat together and treat, in the manner
already described in my former Specification referred to above, common sand (which
has been thoroughly pulverised and washed with hydrochloric acid produced in the
process), chloride of sodium (common salt), and lime, this latter being employed in
substitution for the chloride of calcium, and producing an equally good result.
Dated this 25th day of March 1891.
ERNEST DE PASS,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Production of Glass-making Material.
1, WALTER WALKER, of 132 Adelaide Road, London, Engineer, 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, that is to say :-
The present invention has reference to the process described in the Specification
of my British Letters Patent, No. 2019, dated 4th February 1891, for the pro-
duction of silicates for making glass, and in which Specification I mentioned the
use of a mixture consisting of the following ingredients viz.: common sand, chloride
of calcium, and chloride of sodium (common salt).
This mixture gives exceedingly good results but I have since discovered, owing
to further experiments instituted, that I can carry out the above mentioned process
when so desired, or in cases where I cannot procure the chloride of calcium easily
or cheaply, by substituting for it lime, which can always be readily and cheaply
obtained.
Now, according to my present process, I heat together and treat in the manner
already described in my former Specification referred to above, common sand
(which has been thoroughly pulverized and washed with hydrochloric acid produced
in the process) chloride of sodium (common salt) and lime, this latter being
employed in substitution for the chloride of calcium, and producing an equally good
result.
The following proportions may be advantageously combined, but I do not limit
myself thereto, viz.: 60 parts sand, 32 parts chloride of sodium, 15 parts lime,
powdered dry and well mixed together.

page_text: Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In my process described in the Letters Patent No. 2019, of 1891, for the
production of silicates for making glass; the employment of lime in substitution
for the chloride of calcium, therein mentioned, and in or about the proportions
herein specified.
2. The herein described glass making material, consisting of a mixture of common
sand (which has been previously pulverized and washed with hydrochloric acid
produced in the process); chloride of sodium (common salt); and lime; and in or
about the proportions mentioned.
ERNEST DE PASS,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicant.