Improvements in the Manufacture of Glass.
Year: 1891

page_text: Date of Application, 9th May, 1891
Complete Specification Left, 9th Mar., 1892-Accepted, 9th Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Glass.
I, THOMAS COOPER JOHN THOMAS of 5 Carlton Road, Finsbury Park, in
the County of Middlesex, Engineer, do hereby declare the nature of this invention
to be as follows:-
My present invention has reference to improvements in the process of treating
frit or material of which glass is to be made forming the subject of a former Patent
granted to me and being No. 12076 dated 22nd September 1886 according to which
process in order to eliminate impurities and produce glass of improved quality the
said frit or material is subjected whilst in a molten state to the action of a blast of
oxygen.
Now according to my present invention the blast whether of pure oxygen or of
oxygen with other gas or gases (as for example if atmospheric air be used) is by
suitable means heated to a high temperature before being introduced into the
molten frit or material of which glass is to be made. This is effected by passing
it through any suitable form of heating device such as a hot blast stove, or an air
regenerator heated in any convenient manner, it may be by the hot gases and
products of combustion escaping from the glass furnace.
It is to be noted that when using oxygen in presence of other gas or gases as for
example when employing atmospheric air a larger proportionate quantity of the
mixed gases must be used in order that the requisite quantity of oxygen shall be
introduced into the molten material. By thus using atmospheric air considerable
economy may be effected in the carrying out of my said process.
ليم
L
M
1001
W. Lloyd Wise,
T. C. J. THOMAS.
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Glass.
I, THOMAS COOPER JOHN THOMAS of 5, Carlton Road, Finsbury Park, in
the County of Middlesex, Engineer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement:-
My present invention has reference to improvements in the process of treating
frit or material of which glass is to be made forming the subject of a former
Patent granted to me and being No. 12076 dated 22nd September 1886 according
to which process in order to eliminate impurities and produce glass of improved
quality the said frit or material is subjected whilst in a molten state to the action
of a blast of oxygen.
Now according to my present invention the blast whether of pure oxygen or of
oxygen with other gas or gases (as for example if atmospheric air be used), is by
suitable means heated to a high temperature say to about the same temperature as
that of the molten frit or material of which glass is to be made, hefore being
introduced into such molten frit or material. This is effected by passing it through
any suitable form of heating device external to the glass furnace such as a hot blast
stove, or an air regenerator heated in any convenient manner, it may be by the hot
gases and products of combustion escaping from the glass furnace.

page_text: By this means cooling of the frit or material and consequent prolonging of the
process, arising from the use of a cold or comparatively cold blast are obviated.
It is to be noted that when using oxygen in presence of other gas or gases, as
for example when employing atmospheric air, a larger proportionate quantity of
the mixed gases must be used in order that the requisite quantity of oxygen shall
be introduced into the molten material. By thus using atmospheric air considerable
economy may be effected in the carrying out of my said process.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The hereinabove described improvement in the manufacture of glass by the
process herein referred to, according to which the blast whether of pure oxygen or
of oxygen with other gas or gases, as for example if atmospheric air be used, is
heated to a high temperature and at a high temperature is introduced into the
imolten frit or material of which glass is to be made substantially as hereinbefore
described.
Dah M 1000
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.