Improvements in Non-conducting Coverings for Boilers, Pipes, and for other purposes.
Year: 1891

page_text: Date of Application, 1st Dec., 1891
Complete Specification Left, 1st Sept., 1892-Accepted, 1st Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Non-conducting Coverings for Boilers, Pipes, and
for other purposes.
1 EDWARD NELSON, trading under the name and style of F. McNeill & Co., of
The Patent Felt Works, Bunhill Row, in the City and County of London, Felt
Manufacturer, do hereby declare the nature of this invention to be as follows :-
The object of this invention is to produce a non-conducting covering for boilers,
pipes, and for other purposes which is practically indestructible by fire.
The radiation of heat from steam boilers, pipes and the like has hitherto been
prevented by the use principally of coverings of hair felt, silicate cotton and
asbestos. Hair felt however, although well adapted as a non-conducting covering
for steam boilers and pipes, is not so well suited as a covering for pipes containing
superheated steam. Asbestos and silicate cotton are both practically indestructible
by fire, and both are bad conductors of heat, but the former is too costly to be used
for ordinary commercial purposes as a boiler covering. Silicate cotton, on account
of the non-cohesion of its particles, can only be kept together by compressing it
between two layers of some rigid material such as wire gauze. It is therefore
unsuitable for boiler coverings wherein a certain amount of flexibility is required.
According to this invention I propose to produce an indestructible non-conducting
covering for boilers, pipes and the like by fastening in any suitable manner a layer
of silicate cotton to a layer of the untearable and unbreakable hair felt made in
accordance with the invention described in my Specification for Letters Patent
No. 13468 of 1891. On the silicate cotton side of the covering so produced, I
fasten a strip of wire gauze or netting to keep the silicate cotton sufficiently rigid
and to form a backing for the covering. This side is placed towards the boiler,
pipe, or the like, when the covering is laid on.
2
100
F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Non-conducting Coverings for Boilers, Pipes, and
for other purposes.
I EDWARD NELSON, trading under the name and style of F. McNeill & Co. of
The Patent Felt Works, Bunhill Row, in the City and County of London, Felt
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 :-
The object of this invention is to produce a non-conducting covering for boilers,
pipes and for other purposes, which is practically indestructible by fire.
The radiation of heat from steam boilers, pipes, and the like has hitherto been
prevented by the use principally of coverings of hair felt, silicate cotton, and
asbestos. Hair felt however, although well adapted as a non-conducting covering
for steam boilers and pipes, is not so well suited as a covering for pipes containing
superheated steam. Asbestos and silicate cotton are both practically indestructible
by fire, and both are bad conductors of heat, but the former is too costly for
ordinary commercial purposes to be used alone as a boiler covering. Silicate
cotton on account of the non-cohesion of its particles, can only be kept together
by compressing it between two layers of some rigid material such as wire gauze.
0 ....כד

page_text: It is therefore unsuitable for boiler coverings wherein a certain amount of flexibility
is required.
According to this invention I propose to produce an indestructible non-conducting
covering for boilers, pipes and the like by fastening in any suitable manner a layer
of silicate cotton or of asbestos or a mixture of both to a layer of the untearable
and unbreakable hair felt made in accordance with the invention described in my.
Specification for Letters Patent No. 13468 of 1891. On the silicate cotton or
asbestos side of the covering so produced, I fasten a strip of wire gauze or netting
or other open wire or lattice work to keep the silicate cotton or asbestos sufficiently
rigid and to form a backing for the covering. This side is placed towards the
boiler, pipe, or the like when the covering is laid on.
The non-conducting boiler covering herein described can be made in lengths,
or strips of any desired size which may be wired or otherwise fastened together.
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 combination with a sheet of hair felt having a central layer of woven or
other wire work, of a sheet of silicate cotton or asbestos or a mixture of both
having a backing of wire gauze or other wire work, substantially as and for the
purpose described.
WATCH DEs ist way of September 1992.
F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicant.