Waterproof Material is Required
Year: 1888

page_text: Waterproof Material is Required.
Partly a communication from abroad by CHARLES RAVE, of Malines, in the Kingdom
of Belgium, Inventor..
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both in
the County of Lancaster, and 323, High Holborn in the County of Middlesex, Civil
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has for its object the utilization of bituminous matter more especially
the peculiar bitumen now being manufactured by the Societe Oléo Graisse in Belgium
from the acid tar residues of petroleum manufacture. This bitumen is exceedingly
tough resembling gutta percha very closely in appearance.
In order to make floor-cloths of the same it is rolled in sheets and preferably
two of these sheets are combined with a layer of canvas between, or one sheet is rolled
on one layer of canvas so as to form a thick, tough waterproof floor covering.
The material in order to make it less liable to break in very cold weather can
also be pulped up with fibrous matter and the whole used as a composition for various
purposes.
For wall covering, paper or canvas can be coated with a layer of this material and
passed between engraved or embossed rollers whereby a pattern in relief is formed
thereon, which can be painted or colored in any desired way.
By mixing the material with lampblack or other pigment, a black or other
tinted composition can be made.
The combined bitumen and fibrous material can be used for many purposes for
which leather is applicable, such as for bookbinding.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool,
Patent Agents for the Applicant.

page_text: I, WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors 6, Lord Street, Liverpool & 6, Bank Street Manchester both in the
County of Lancaster & 323 High Holborn in the County of Middlesex Civil Engineer
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 has for its object the utilisation of certain tough bituminous matters
not tacky at ordinary temperature of the atmosphere.
I prefer for this purpose, that manufactured by the Society Oléo Graisse or their
successors at Malines, Belgium from the acid tar residues of petroleum manufacture.
This material is described in patent specification No. 607 of 1888.
The principle of the invention consists in combining this or like bituminous non-
tacky, tough material with strong fibrous matter. For this purpose the bitumen is
mixed in any convenient manner with about its own weight or a lesser quantity of
the fibre, the fibre being preferably formed into a web or felt and united with one
or more parallel layers of the bitumen by heat and pressure, or a web can be dipped
into the melted bitumen or alternate layers of fibrous matter and bitumen rolled
together.
For wall paper or covering for a smooth surface, the felt or calico, coated or
impregnated with the bitumen is passed under heavy pressure between rollers
preferably engraved or embossed with a suitable pattern.
If the surface be required to be very uneven the hard bitumen is softened by the
addition of benzine or other very volatile solvent and laid on like cement prior to
rolling or stamping.
Floorcloth is preferably formed of canvas coated with a thick layer of the bitumen,
either pure or preferably mixed with short fibre, sawdust, or the like, and the whole
rolled between two weighted rollers, the weight being adjusted so as not to squeeze
the bitumen away from the canvas but only to spread it evenly, and consolidate it.
For sole leather and belting several thicknesses of canvas alternating with about
sixteenth to a sixty fourth of an inch layers of bitumen are used. These are rolled
to an even thickness and uniform surface. For uppers, or bookbinders' leather
substitute, a single layer of canvas and a single layer of bitumen from to 3 of
an inch thick rolled together cold or but slightly warmed till they firmly adhere.
The exterior of the bitumen layer or the whole is preferably blackened or coloured by
the, addition of a small amount of pigment preferably lamp black and this is of course
the outside.

page_text: For tarpaulins a layer of canvas is saturated or coated on each side with the
bitumen and the latter thoroughly incorporated with the canvas by heat and pressure,
or by the aid of a volatile solvent, care being taken that only sufficient bitumen be
used to well saturate the canvas and make it waterproof without increasing its weight
and bulk so much as to make it inapplicable for the purpose required. Exact
quantities cannot be given as they vary with the bitumen employed the use to which
the tarpaulin is to be put and the character of the fibrous base used, but the operator
can judge very well by eye and still more by practice the best quantity to use in
each case.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed as communicated to me
by my foreign correspondent, I declaro that what I claim is :-
The manufacture of flourcloths, wall coverings, tarpaulins, roofing folt, or other
objects where a tough non-decomposable or waterproof and elastic material is required,
from non-tacky bituminous material and fibrous matter substantially as described.
Dated this 13th day of February 1889.
WM. P. THOMPSON & Co.,
Agents for the Applicant.