Improvements in the Manufacture of Pottery or like Ware.
Year: 1894

page_text: Date of Application, 22nd Oct., 1894
Complete Specification Left, 20th July, 1895-Accepted, 24th Aug., 1895
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Pottery or like Ware.
I, EDWARD ARTHUR SHAW of Buglawton near Congleton, in the County of
Chester, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the manufacture of pottery or like ware, the object being
to dispense with the first or "biscuit" firing which is generally employed in order
to harden by firing the green ware which is subsequently to be glazed and passed
through a second firing" glossed."
The invention consists in so treating the green ware without "biscuit" firing
that it will become sufficiently tough and hard to enable it to be handled and
printed and of such a nature to take the glaze, and finally glazed and fired in one
firing.
This end may be secured by treating the clay or bodies with a solution of
silicate of soda which may either be mixed with the clay prior to moulding, or the
moulded body may be dipped in such solution or sponged over with same. Articles
so treated commence to harden almost immediately and in the open air will usually
be sufficiently hard in twenty-four hours to enable them to be printed and glazed
in the usual way.
From experiments it is judged that in the firing of such articles an increase of
the ordinary temperature will hasten the vitrefaction.
Dated this 22nd day of October 1894.
PHILIP M. JUSTICE,
55 & 56 Chancery Lane, London, Chartered Patent Agent,
For the Applicant.
Improvements in the Manufacture of Pottery or like Ware.
I, EDWARD ARTHUR SHAW of Buglawton, near Congleton; in the County of
Chester, Manufacturer, 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 the manufacture of pottery, tile or like ware, the object
being to effect such manufacture and produce the finished ware with but a single
firing, thus dispensing with the first or "biscuit" firing which is generally employed
for the purpose of hardening the " green ware which is subsequently to be glazed
and passed through a second or "glossing" firing.
"
The invention consists in so treating the green ware without "biscuit" firing
that it will become sufficiently tough and hard to enable it to be handled, printed,
painted, or otherwise decorated, and will also take the requisite glaze in a single
firing, and this end is secured by dipping, coating or partially impregnating the
green ware with a solution of soluble glass, silicate of soda, or like compound.
I judge by experiment that good results will be obtained by dipping into or
66
"
Price R71

page_text: و"
coating the "green ware with a solution composed of 10 parts by measure of
water, to 1 part by measure of soluble glass of 66 per cent. strength, and then
drying said ware. Such drying will be hastened by placing the ware in a room in
which the temperature is maintained at about 100° to 200° F., when in an hour or
more depending somewhat upon the article, the ware will be found to be sufficiently
hard to be handled, printed, painted, or otherwise decorated, after which the
article may be glazed and fired in the usual way, although an increase of the
ordinary temperature will probably hasten vitrifaction.
I do not desire to confine myself to the exact proportions of water and soluble
glass stated, although I believe successful results will in all ordinary cases be
secured where such proportions are followed.
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 :-
:-
1. The manufacture of glazed pottery, tile, and the like ware, with a single firing,
substantially as set forth.
"
2. The manufacture of glazed pottery, tile,, and the like ware, consisting in
coating or impregnating the "green" ware with a solution of soluble glass or
silicate of soda, and then drying and glazing, and firing same, substantially as set
forth.
3. The manufacture of glazed pottery, tile, and like ware consisting in coating
or impregnating the "
green ware with a solution of soluble glass or silicate of
soda, then drying same, then printing, painting or decorating the hardened ware,
and finally glazing and firing same, substantially as set forth.
4. As an article of manufacture the improved pottery, tile, or like ware,
hardened by a solution of soluble glass or silicate of soda, and submitted to a
single firing, as set forth.
Dated the 19th day of July 1895.
PHILIP M. JUSTICE,
55 & 56 Chancery Lane, London, Chartered Patent Agent,
For the Applicant.