IMPROVEMENTS COVERINGS FOR PIPES, BOILERS AND OTHER VESSELS FOR PREVENTING CONDUCTION OF HEAT
Year: 1882

page_text: LETTERS PATENT to Edward Kendall Leadbetter of St Leonard's Terrace
Upton Park in the County of Essex for an Invention of IMPROVEMENTS
COVERINGS FOR PIPES, BOILERS AND OTHER VESSELS FOR PREVENTING
CONDUCTION OF HEAT.
IN
PROVISIONAL SPECIFICATION left by the said Edward Kendall Leadbetter
at the Office of the Commissioners of Patents on the 17th July 1882.
EDWARD KENDALL LEADBETTER of St Leonard's Terrace Upton Park in the
County of Essex "IMPROVEMENTS IN COVERINGS FOR PIPES, BOILERS AND OTHER
VESSELS FOR PREVENTING CONDUCTION OF HEAT "
My invention relates to coverings for pipes boilers and other vessels for
preventing conduction of heat from their contents. For this purpose I make a
mixture of Plaster of Paris with animal or vegetable fibre such as cuttings of hair
saw dust or cork dust spent hops or bark, chopped jute, coesa, straw or other
fibre and having reduced this by addition of water to a semifluid condition I pour
it into moulds made to the shapes of the surfaces to be covered thus producing
covering pieces in halves or in such other divisions as can be conveniently applied
to the object to be covered. When for example, the covering is intended for a pipe,
I cast the coverings in the form of semicylindrical pieces which can readily be put
on in halves, the halves being secured together by wrapping cord or fabric round
the coverings or simply by covering their junctions with fabric glued or cemented
on the pieces. The two halves may be hinge-jointed together by a strip of canvas
or other fabric joining their edges and can then be put on the pipe and secured at
their other edges. In moulding the pieces I find it convenient to make their
internal surfaces with ribs slightly projecting as chipping pieces portions of which
can be scraped away so as to make the pieces fit irregularities of the surfaces to be
covered. Such ribs may be made of some depth so as to enclose air spaces
between the outer surface of the pipe or vessel and the inner surface of the
covering.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Edward Kendall Leadbetter in the Great Seal Patent Office on the
17th January 1883.
EDWARD KENDALL LEADBETTER of St Leonard's Terrace, Upton Park in the
County of Middlesex [sic] "IMPROVEMENTS IN COVERINGS FOR PIPES, BOILERS
AND OTHER VESSELS FOR PREVENTING CONDUCTION OF HEAT
My invention relates to coverings for pipes, boilers and other vessels for
preventing conduction of heat from their contents. For this purpose, I make a
mixture of about 2 parts Plaster of Paris with about 3 parts animal or vegetable
fibre, such as cuttings of hair, saw dust or cork dust, spent hops or bark, chopped
jute, cocoa straw or other fibre, taking care that some of the fibres are long, and
having reduced this by addition of water to a semi fluid condition, I pour it into
moulds made to the shapes of the surfaces to be covered thus producing covering
pieces in halves or in such other divisions as can be conveniently applied to the
object to be covered. When, for example, the covering is intended for a pipe, I
cast the coverings in the form of semicylindrical pieces, which can readily be put
on in halves, the halves being secured together by wrapping cord or fabric around
the coverings, or simply by covering their junctions with fabric glued or cemented
on the pieces. The two halves may be hinge-jointed together by a strip of
canvas or other fabric joining their edges and can then be put on the pipe and
secured at their other edges. In moulding the pieces, I find it convenient to make
their internal surfaces with ribs slightly projecting as chipping pieces, portions of
which can be scraped away so as to make the pieces fit irregularities of the
surfaces to be covered. Such ribs may be made of some depth so as to enclose air
spaces between the outer surface of the pipe or vessel and the inner surface of the
covering.
Instead of moulding a paste of the material as above described, it may be applied
to the surface to be covered in the following manner. The dry mixture is put into
a tube of porous fabric which can be coiled around a pipe or other vessel and water
being then poured over the coiled tube, the material in it sets.
Having thus described the nature of my invention and in what manner the same
is to be performed, I claim :-
The manufacture of coverings for pipes, boilers and other vessels for preventing
conduction of heat, substantially as herein described.
In witness whereof I the said Edward Kendall Leadbetter have hereunto set
my hand and seal this Seventeenth day of January in the year of our Lord
One thousand eight hundred and eighty-three.
EDWARD KENDALL LEADBETTER (L.S.)