IMPROVEMENTS IN MAKING SEWAGE PIPES, GLAZED BRICKS, AND OTHER EARTHENWARE ARTICLES
Year: 1885

page_text: other Earthenware Articles.
I, ALEXANDER PATRICK, of Blochairn, Glasgow, in the County of Lanark, North
Britain, Fireclay Manufacturer, do hereby declare the nature of my said inven-
tion for IMPROVEMENTS IN MAKING SEWAGE PIPES, GLAZED BRICKS, AND OTHER
EARTHENWARE ARTICLES," to be as follows, that is to say :-
16
My said Invention has for its object to make sewage pipes, glazed bricks, and
other earthenware articles, of superior quality at a low cost, by employing the
argillaceous earth known as blue-till."
Heretofore no one has, I believe, succeeded in satisfactorily employing this very
abundant earth for manufacturing earthenware, whereas by an improved but
simple process I am enabled not only to overcome difficulties hitherto experienced
but also to make a superior article.
In carrying out my Invention I take the till in the moist condition in which it
is ordinarily found, and first, calcine or thoroughly dry it. I next reduce it by
grinding to a very fine powder, by which process its various constituents become
thoroughly and uniformly mixed. For some purposes the ground material may be
sifted to separate the coarser particles. The ground material is next brought into
a plastic condition with the aid of water and is moulded into the various articles.
The moulded articles are dipped into a suitable glazing mixture, and after drying
are fired like ordinary earthenware goods.
Drain pipes and other articles made by this Invention possess considerable
strength and do not require to be made so thick as when made of inferior earths.
The till prepared as herein before described, may be used alone or combined with
other argillaceous earths.

page_text: other Earthenware Articles.
I, ALEXANDER PATRICK, of Blochairn, Glasgow, in the County of Lanark, North
Britain, Fireclay 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, that is to say:-
My said Invention has for its object to make sewage pipes, glazed bricks, and
other earthenware articles, of superior quality at a low cost, by employing the
argillaceous earth known as "blue-till."
Heretofore, no one has, I believe, succeeded in satisfactorily employing this very
abundant earth for manufacturing earthenware, whereas by an improved but
simple process I am enabled not only to overcome difficulties hitherto experienced,
but also to make a superior article.
In carrying out my Invention I take the till in the moist condition in which it
is ordinarily found, and first calcine or thoroughly dry it. I next reduce it by
grinding to a very fine powder, by which process its various constituents become
thoroughly and uniformly mixed. For some purposes the ground material may be
sifted to separate the coarser particles. The ground material is next brought into
a plastic condition with the aid of water or other suitable liquid or steam and is
moulded into the various articles. The moulded articles are dipped into a suitable
glazing mixture, and after drying are fired like ordinary earthenware goods.
Drain pipes and other articles made by this Invention possess considerable
strength and do not require to be made so thick as when made of inferior earths.
The till prepared as hereinbefore described, may be used alone or combined with
other argillaceous earths.
The glazing may be omitted in the case of some articles.
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 making of sewage pipes, glazed bricks, and other earthenware articles
wholly or partly of "blue till" in the improved manner substantially as herein-
before described.
this fourth dow of March 1886.