Improvements in Lining Boilers or Digesters used in the Manufacture of Paper Pulp and for other similar purposes.
Year: 1890

page_text: Date of Application, 8th Oct., 1890
Complete Specification Left, 8th July, 1891-Accepted, 8th Aug., 1891
PROVISIONAL SPECIFICATION.
Improvements in Lining Boilers or Digesters used in the Manufacture
of Paper Pulp and for other similar purposes.
I CARL KELLNER of 8 Bartensteingasse Vienna in the Empire of Austria
Chemist do hereby declare the nature of this invention to be as follows:-
:―
The object of this invention is to facilitate the lining of such boilers or digesters
with an acid resisting medium, and the invention relates principally to the use for
this purpose of blocks slabs or tiles in combination with a preparatory cement or
composition.
The first coating of preparatory cement or composition I make as described in
the Specification filed with an application for Letters Patent No. 6951 dated
May 6th 1890 which consists of a cement formed as therein stated from ground
slate mixed into a paste with silicate of soda or water glass.
Upon this cement as a foundation I apply (whilst it is in an adhesive state)
blocks or slabs formed by preference of the following mixture.
About One part of ground slate,
Two parts of ground glass, and
One part of Portland cement
mixed into a paste with a weak solution of water glass.
The blocks or slabs after being moulded are allowed to become dry and are then
placed in position upon the coating of preparatory cement and the interstices filled
in with the same mixture of which the blocks or slabs are composed.
Instead of using blocks or slabs composed as above I also propose to use in
combination with the aforesaid preparatory cement blocks or tiles made from
toughened glass or from other compositions or materials which possess the requisite
acid resisting qualities.
Dated this 7th day of October 1890.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Lining Boilers or Digesters used in the Manufacture
of Paper Pulp and for other similar purposes.
I CARL KELLNER of 8 Bartensteingasse Vienna in the Empire of Austria
Chemist 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 :-
The object of this invention is to facilitate the lining of such boilers or digesters
with an acid resisting medium, and the invention relates principally to the use for
this purpose of blocks, slabs or tiles in combination with a preparatory cement or
composition.
The first coating of preparatory cement or composition I make as described in
the Specification filed with an application for Letters Patent No. 6951 dated
May 6th 1890, which consists of a cement formed as therein stated from ground
slate mixed into a paste with silicate of soda or water glass.
Or I vary the same with the addition to the ground slate of burnt clay ware such
as broken tiles, bricks &c. ground to a powder and mixed into a paste with silicate
of soda or water glass.

page_text: Upon this cement as a foundation I apply (whilst it is in an adhesive state) blocks
or slabs formed by preference of the following mixture:
About One part of ground slate,
Two parts of ground glass, and
One part of Portland cement
mixed into a paste with a weak solution of water glass.
The blocks or slabs after being moulded' are allowed to become dry and are then
placed in position upon the coating of preparatory cement and the interstices filled
in with the same mixture of which the blocks or slabs are composed.
5
Instead of using blocks or slabs composed as above I also propose to use in 1
combination with the aforesaid preparatory cement blocks or tiles made from
toughened glass or from burnt clay or other compositions or materials which possess
the requisite acid resisting qualities.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
The improvements in lining boilers or digesters used in the manufacture of paper
pulp and for other similar purposes consisting in the combination with a preparatory
layer formed principally of silicate of alumina (preferably ground slate mixed with
silicate of soda) of blocks or slabs of acid resisting material substantially as and
for the purposes specified.
Dated this 7th day of July 1891.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.