Improvements in and connected with Linings for Wood Pulp Digesters.
Year: 1894

page_text: Date of Application, 8th Feb., 1894
Complete Specification Left, 8th Nov., 1894-Accepted, 8th Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in and connected with Linings for Wood Pulp
Digesters.
We, RICHARD PRESTON of Bury Ground, Manufacturing Chemist, and THOMAS
THORNLEY of Manchester Road, Paper Manufacturer, both of Bury in the
County of Lancaster, do hereby declare the nature of this invention to be as
follows:-
:-
"
This invention relates to tile linings for wood pulp digesters and its object is to
secure the tiles in position inside the digesters or boilers without the use of cement
lead and other similar devices at present commonly used.
For the purpose of our invention we employ a paste or plastic mass composed of
asbestos and a solution of silicate of soda or silicate of potash or both of them, but
preferably of the silicate of soda alone. This mass or paste is used for the purpose
of embedding the tiles or the like upon the shell of the digester, and it may also be
used for the purposes of pointing the tiles and making joints.
Dated this 7th day of February A.D. 1894.
WILLIAM E. HEYS,
Agent for the Applicants.
Improvements in and connected with Linings for Wood Pulp
Digesters.
We, RICHARD PRESTON, of Bury Ground, Manufacturing Chemist, and THOMAS
THORNLEY of Manchester Road, Paper Manufacturer, both of Bury in the
County of Lancaster, 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 tile linings for wood-pulp digesters and its object is to
enable the tiles to be secured in position inside the digesters or boilers without the
use of cement, lead, and other similar materials at present commonly employed.
For the purpose of our invention, we employ a plastic mass or paste composed of
asbestos and a solution of silicate of soda or silicate of potash or of a mixture of
them, but preferably a solution of silicate of soda..
We do not limit ourselves to any particular proportions or strength of solution;
but in ordinary practice we find it convenient to use the asbestos of commerce, and
make it into a paste or plastic mass with a sufficiency of a solution of silicate of
soda of a strength of about 100 Tw.
This mass or paste is used for embedding the tiles upon the walls of the digester
or boiler, for pointing between the tiles, and for making joints.
After as many of the tiles have been bedded, or as much of the pointing or joint
making has been completed as can conveniently and satisfactorily be accomplished,
without drying the work, heat may be applied to effect the drying, or, if time
permit, the work may be allowed to dry naturally.
We prefer, as the most economical course, to dry the work by means of dry heat
locally applied by means of steam pipes, gas, or other convenient devices applied by
internally or externally with respect to the digester, care being taken that the
drying is not attempted to be effected too rapidly.

page_text: After one stage of the work has been dried, another may in turn be completed
and dried until the whole is finished.
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:-
1. The hereinbefore described method of and means for embedding tiles upon
the walls of wood-pulp digesters and boilers, for pointing and for making joints
therein, substantially as set forth.
2. As a means for embedding tiles, pointing, and making joints in wood-pulp
digesters, a composition consisting of asbestos made into a plastic mass or paste
with a solution of silicate of soda or of silicate of potash or a mixture of them and
employed substantially as hereinbefore described.
Dated this 6th day of November A.D. 1894.
WILLIAM E. HEYS,
Agent for the Applicants.