Improvements in Non-conducting Coverings for Pipes, Boilers, and other Vessels and Receptacles.
Year: 1890

page_text: Date of Application, 15th July, 1890-Accepted, 16th Aug., 1890
COMPLETE SPECIFICATION.
Improvements in Non-conducting Coverings for Pipes, Boilers, and
other Vessels and Receptacles.
I, HIRAM MONTGOMERY HANMORE, of Terrace Place, Santa Cruz, in the State of
California, United States of America, Manufacturer's Agent, 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 :-
My improvement relates to coverings which are to be employed as non-conductors
of heat on pipes, boilers, and other vessels and receptacles.
The improvement consists in a non-conducting covering composed of fossil-meal,
carbonate of magnesia, and vegetable, animal, or mineral fibre. This composition
may be applied to the exteriors of pipes, boilers, and other articles, in any convenient
manner, but I prefer generally to apply it as shown in the accompanying drawings,
in sections which have been previously moulded to the form of the surface to which it
is to be applied.
Fig. 1 in the drawings is a perspective view of a section of my covering adapted
for application to a pipe.
Fig. 2 is a similar view shewing the method of applying the covering to a pipe.
Similar letters of reference designate corresponding parts in all the Figures.
In making my covering, 1 take so-called "fossil-meal," which consists principally of
silicate skeletons of the peat plant and chalk, and I preferably wash it to remove the
chalk or a large portion thereof. With the fossil-meal I mix carbonate of magnesia
and water, thoroughly stirring the same, and adding a fibre which may be of any
suitable kind, either mineral, animal, or vegetable, such, for instance, as cotton, jute,
hair, or asbestos. When the fibre has been thoroughly mixed with the fossil-meal
and carbonate of magnesia, I mould the mass into suitable forms for the purpose
required. The forms are then dried. After being dried, they are smoothed down by
any convenient means, so as to present even and true edges and surfaces.
In the example of my improvement shown, the covering is formed into semi-
cylindrical sections A, of which one end of each is provided with an angularly extend-
ing or bevel portion a, while the other end is provided with undercut bevelled surfaces a¹.
When the sections of the covering are placed together about a pipe B, the bevel
portion a upon one section will extend into the undercut or bevel surface a¹ проп the
next adjacent section. When the sections have been placed about a pipe, they may
be secured in position by means of straps or bands C, of any suitable material, passing
about their exteriors, or otherwise, as desired.
A pipe or boiler covering made according to my improvement, is hard and firm,
and presents sharp edges, which admit of the sections being fitted tightly together,
thus preventing loss of heat between the joints. It may be sawed or cut in any
desired manner, and possesses non-heat-conducting properties to a high degree. I
have found that a good proportion of the parts, by weight, for the mixture, is about
seventy (70) parts fossil meal, twenty (20) parts carbonate of magnesia, and ten (10)
parts of fibre, with a suitable quantity of water to make a pasty mixture.
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:
A covering for pipes, boilers, and similar articles, consisting of fossil-meal, carbonate
of magnesia, and fibre, substantially as specified.