Improvements in the Manufacture of Earthenware for Chemical, Metallurgical, and other Purposes.
Year: 1897

page_text: Date of Application, 16th Dec., 1897
11th Cont
1000
Accanted 10th Doc
1808
Date of Application, 16th Dec., 1897
Complete Specification Left, 14th Sept.
1000
Accepted, 10th Dec 1808
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Earthenware for Chemical,
Metallurgical, and other Purposes.
We, ANDREW MATTHEWS, of Normans Pottery, Widnes, in the County of
Lancaster, and WILLIAM MATTHEWS, of 6, Brackley Street, Runcorn, in the
County of Chester, Potters, do hereby declare the nature of this invention to be
as follows;―
.
This invention has for its object a kind of pottery for sanitary, electrical,
chemical, and other purposes formed largely of carbon. It has long been a
desideratum to get a material of this nature, but hitherto it has been accomplished
by mixing the carbon in the form of graphite with the earthenware.
Now our invention consists in depositing carbon on and in the earthenware
during its manufacture. We bake or burn the earthenware in a muffle or air-
tight furnace surrounded by flues, and when the material is at a high heat we
pass into the chamber carbonaceous gases such for instance as coal gas, oil, tar,
or the like. The earthenware at a bright yellow or white heat at once decom-
poses these gases or vapours and the carbon is deposited in the pores and on the
surface of the earthenware. We may however burn the earthenware in ordinary'
kilns in which however all ingress and egress of air or products of combustion
can be shut out when desired by damper or otherwise and then when the earthen-
ware is at the required heat pass in the carbonaceous gases or vapours. Earthen-
ware of this nature permeated with and coated with carbon will probably be
found admirable for sanitary, chemical, or metallurgical purposes.
71
111
£ Doomhon 1807
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicants.
Improvements in the Manufacture of Earthenware for Chemical,
Metallurgical, and other Purposes.
ANDREW MATTHEWS, Potter, Norman's Pottery, Widnes, Lancashire, WILLIAM
MATTHEWS, Potter, 6, Brackley Street, Runcorn, Cheshire, 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 has for its object a kind of pottery for sanitary, electrical,
chemical, metallurgical and other purposes, formed largely of carbon.

page_text: It has long been a desideratum to get a material of this nature, but hitherto it
has been accomplished by mixing the carbon in the form of graphite with the
earthenware.
Now, our invention consists in depositing carbon on, and in the earthenware,
after the burning or baking process, and whilst the ware is still hot.
We bake, or burn the earthenware in a muffle, or air-tight kiln, surrounded by
flues, and whilst the material is at a high heat, we pass into the chamber car-
bonaceous fumes, such, for instance as coal gas oil, tar, pitch, or the like, the
earthenware at a bright yellow, or white heat, at once decompose these gases,
or vapours, and the carbon is deposited in the pores and on the surface of the
earthenware.
We may, however, burn or bake the earthenware in an ordinary kiln, in which
however, all ingress of air can be shut out by damper, or otherwise, and closing
the fireplaces, there must however, be a vent left open at the top of the kiln, to
allow of the free escape of superfluous gases, it may either be allowed to escape
entirely or, it may be conducted from kiln to kiln until it is entirely consumed.
The carbon, in the form of coal gas, tar, oil, pitch or the like is passed into
the kiln by means of a lute, or, it may be put into the ordinary fireplace, which
must however, be immediately closed to prevent the ingress of air.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
That the part claimed as the patent lies in the process of depositing the
carbon on and in the earthenware, by means of carbonaceous fumes, whilst the
earthenware is in a hot state, as described in the foregoing specification.
Dated this
Or Septemt 1898.
A. MATTHEWS.
WM. MATTHEWS.
All communications respecting the foregoing to be addressed to 6, Brackley
Street, Runcorn, Cheshire."