Non-conducting Coverings for Steam Pipes, Steam Boilers, and the like.
Year: 1896

page_text: Date of Application, 3rd July, 1896
Complete Specification Left, 19th Dec., 1896-Accepted, 23rd Jan., 1897
PROVISIONAL SPECIFICATION.
Non-conducting Coverings for Steam Pipes, Steam Boilers, and
the like.
We, JOHN WILSON SMITH and CHARLES HANNAY, 57 and 59 Montrose
Street, Glasgow Manufacturers of Coverings for Steam Pipes and Boilers, do
bereby declare the nature of this invention to be as follows:-
This invention relates to non-conducting coverings for steam pipes, steam
boilers and the like.
In accordance with our invention the covering for a steam pipe for example is
made in two semi-circular portions or halves so as to completely surround the
pipe. In lieu of the interior of the covering being circular it is made square
shaped but with the corners rounded and then between each corner of the same
side the covering projects inwards, the projections at the four sides fitting the
diameter of the pipe. There is thus an air space at each of the four corners
which spaces serve to retain the heated air. In the case of a large surface, such
as a boiler for example, there may be a number of alternate air spaces and
projections around the boiler instead of having four large air spaces as would be
the case if the same formation as used for a steam pipe were used for a boiler.
In lieu of dividing the covering into two parts, it may be divided into three, four
or more parts.
The invention further consists in making steam pipe and the like coverings of
a natural product known as Carib Silicate, which is a natural mineral or infusorial
earth and incorporated asbestos or other similar material with it as a binding.
Our particular construction or section of covering may however be made of
any of the ordinary non-conducting materials as well as our aforesaid particular
material.
Land den of Lal 1906
JOHNSONS,
115 St. Vincent Street, Glasgow, Applicants' Agents.
COMPLETE SPECIFICATION.
Non-conducting Coverings for Steam Pipes, Steam Boilers, and
the like.
We, JOHN WILSON SMITH and CHARLES HANNAY of 57 and 59 Montrose
Street, Glasgow, Manufacturers of Coverings for Steam Pipes and Boilers, 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 removable nonconducting coverings for steam pipes,
steam boilers and the like and has for its object to produce a light, strong and
fireproof nonconducting covering which can be easily applied and removed when

page_text: tests or examinations of the metal are required and this invention refers to the
material employed as well as to the form and construction of the covering.
In accordance with our invention, we construct the covering, for a steam pipe
for example, as shewn in the annexed drawing viz. in two semicircular portions or
halves so as to completely surround the pipe.
The interior of the covering A is made square shaped but with the corners
rounded as at a the covering at the sides and between the rounded corners
projecting inwardly as at 6, the said projections fitting the diameter of the pipe,
thereby forming an air space at each of the four corners a which spaces serve to
retain the heated air.
The said coverings may be made in any desired lengths and may also be
provided at their ends with flanges so as to confine the air.
In the case of a large surface, such as a boiler for example, there may be a
number of alternate air spaces and projections around the boiler instead of having
four large air spaces as would be the case if the same formation as used for a
steam pipe were used for a boiler.
The covering may be divided into three, four or more parts in lieu of two as
shewn.
The material of which the covering is composed is a natural mineral
diatomaceous earth called "Carib Silicate" of which the following is the chemical
analysis :-
Silica
Alumina
Iron peroxide
Lime
-
Volatile and organic matter
80.20
6.25
1.78
2.20
9.57
100.00
To 85% of this material is added 10% of asbestos fibre and 5% of adhesive
matter such as rice or flour sweepings.
This compound is then mixed into a plastic state and with the aid of dies
and moulds the mass is subjected to pressure to produce the formation before
referred to..
From the nature of the material used and the pressure applied the covering
becomes strong, rigid and firm and will resist blows and pressure, it is incom-
bustible and will not decompose by heat or moisture and is well suited for the
purposes intended.
The sections of the cylinders are held securely together by bands and the whole
can be varnished, painted or covered with canvas.
This covering is also applicable for use in insulating refrigerating chambers
and the like.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
A removable nonconducting covering for steam pipes, steam boilers and the
like in the form of cylinders or slabs, having the inside surface either plain or
corrugated, with or without air spaces continuous or confined, said covering being
composed of the mineral earth called "Carib Silicate" in combination with a
fibrous and adhesive substance, substantially as hereinbefore described and shewn
in the accompanying drawing.
JOHNSONS,
115 St. Vincent Street, Glasgow, Applicants' Agents.