Improvements in the Manufacture of Fibrous Bituminous Felt.
Year: 1895

page_text: Date of Application, 2nd Sept, 1895
Complete Specification Left, 2nd Mar., 1896-Accepted, 4th Apr., 1896
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Fibrous Bituminous Felt.
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 to be as
follows:-
This invention relates to improvements in the manufacture of fibrous bituminous
felt applicable for roofing purposes or as a damp course material for use in the
foundations of buildings.
The fibrous bituminous felt which forms the subject of this invention is composed
of two layers of fibrous felt with a central layer of sheet metal. The sheet metal
is first treated with pitch, tar or other bituminous material on both sides, and is
then placed. between two layers of fibrous bituminous felt and put into a press, or
passed between rollers, where it is subjected to the pressure requisite to cause the
felt layers to adhere to the sheet metal and form a homogeneous sheet or slab of
great tenacity.
The metal used should be sufficiently ductile to allow of the slight flexibility
required in roofing felts or, in damp course materials, to allow of the settling of
the foundations.
The metal being between the fibrous bituminous felt is protected from oxidation
and therefore when used for roofing it is practically imperishable. When used as
a damp course material the central layer of metal affords a sure preventative
against the passage of damp from the foundation to the superimposed building.
Sheets or slabs of fibrous bituminous felt made in accordance with this invention
are very tenacious and practically indestructible, are easily packed and ready for
immediate use, and may be placed in position by ordinary labourers, and when laid
as damp course the building may be immediately proceeded with.
Dated this 2nd of September 1895.
F. W. GOLBY,
36 Chancery Lane, London, W.C., Patent Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Fibrous Bituminous Felt.
I, EDWARD NELSON, trading under the name of F. McNeill and Co. of
Bunhill Row, in the County of Middlesex, Patent 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 :-
This invention relates to improvements in the manufacture of fibrous bituminous
felt applicable for roofing purposes, as a damp course material for use in the
foundations of buildings, or for other purposes.
The fibrous bituminous felt which forms the subject of this invention is composed
of two layers of fibrous felt with a central layer of sheet metal. The sheet metal
.

page_text: is first coated with a thin coat of pitch, tar, or other bituminous material on both
sides, or it may be heated or warmed, and is then placed between two layers of
fibrous bituminous felt and put into a press, or passed between rollers, where it is
subjected to the pressure requisite to cause the felt layers to adhere to the sheet
metal and form a homogeneous sheet or slab of great tenacity. Or the metal may
be put between the layers of felt during the manufacture of the latter when it is
in a more or less warm, and sticky or viscous condition, the whole being
subsequently pressed or rolled. The metal used should be sufficiently ductile to
allow of slight flexibility such as is required in roofing felts, or in damp course
materials to allow the settling of the foundations.
The metal being between the fibrous bituminous felt is protected from oxidation
and therefore when used for roofing is practically imperishable. When used as a
damp course material the central layer of metal affords a sure preventative against
the passage of damp from the foundation to the superimposed building.
If found desirable I may make the material from one layer of fibrous felt and
one layer of sheet metal, or from two layers of cach, or may otherwise vary the
number of felt and of metal layers according to the uses to which the finished
product is to be applied. But in all cases I arrange the metal and felt layers
alternately and cause them to adhere to each other by the means and in the manner
herein before described.
Sheets or slabs of bituminous felt made in accordance with this invention are
very tenacious and practically indestructible, are easily packed and ready for
immediate use, and may be placed in position by ordinary labourers and when laid
as damp course the building may be immediately proceeded with. The sheets or
slabs may
be cut up into various shapes and can be used for a number of useful
purposes where a ductile and damp proof felt is required such for example as
insoles for boots and shoes, as a damp proof covering for walls, a damp course
material for the foundations of buildings, for roofing and for other purposes.
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 ;-
1. Fibrous bituminous felt composed of a layer or layers of fibrous felt, and a
layer or layers of ductile sheet metal coated on one or on both sides as required
with pitch, tar or other bituminous material, the layers being arranged alternately
and the whole formed into a homogeneous sheet or slab by pressure sufficient to
cause the layers to adhere to each other, substantially as described.
2. Fibrous bituminous felt composed of a layer or layers of fibrous felt and a
layer or layers of ductile sheet metal, the layers being arranged alternately and
the whole formed into a homogeneous sheet or slab by heat and pressure sufficient
to cause the layers to adhere to each other, substantially as described.
Dated this 2nd day of March 1896.
F. W. GOLBY,
36 Chancery Lane, London, W.C., Patent Agent for the Applicant.