Year: 1888

page_text: Date of Application, 12th Jan., 1888
Complete Specification Left, 11th Oct., 1888
Complete Specification Accepted, 16th Nov., 1888
We STANLEY COOPER, Engineer and THOMAS COOPER junior Flax Merchant both
of Brookfield Heaton near Bolton in the County of Lancaster do hereby declare the
nature of this invention to be as follows:-
"
23
This invention relates principally to the employment in the manufacture of roofing
felt of a material known as "wood wool or wood straw" and more especially such
"wood wool " or wood straw as is manufactured or produced by means of a
machine or apparatus for which we have filed an application for Letters patent bearing
even date herewith.
For the purposes of this invention we arrange the knives in the machine in such a
way as to cut the wood into shavings or strips of a much finer or narrower width than
when the wool or straw is to be used for packing or analogous purposes.
We then take the fine "wood wool" or straw thus produced and by means of
carding or other analogous process we reduce the length of the staple in a similar
manner so as to bring the whole substance to a state of carded fibre or wool.
The material thus produced we then use as a substitute for the flax usually employed
in combination with tar in the manufacture of roofing felt. The "wood wool"
produced and treated in the above manner may be either used alone with the tar or
in combination with other fibrous materials usually employed for the manufacture of
roofing felt and the product of this combination will be found to be much more
economical in manufacture than, and quite as effective as, roofing felt made in the
ordinary manner and of the materials hitherto employed.
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.

page_text: We STANLEY COOPER Engineer and THOMAS COOPER junior Flax Merchant both of
Brookfield, Heaton near Bolton in the County of Lancaster 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 the employment in the manufacture of roofing felt of a
material known as "wood-wool" or wood-straw," which is made by cutting wood
into the form of narrow strips or shavings.
For the purposes of our invention we preferably arrange the knives in the machine
in such a way as to cut the shavings or strips of a much finer or narrower width than
when the wool, or straw is intended to be used for packing or analogous purposes.
We then take the fine "wood wool" or "straw" thus produced and by means of
carding or other analogous process we reduce or crush the staple to a suitable state
for use.
The material thus produced we then use as a substitute for the flax waste usually
employed (in combination with tar or other similar waterproofing material or
composition) in the manufacture of roofing felt.
The "wood-wool" produced and treated in the above manner may be either used
alone with the tar (or other similar waterproofing material or composition) or in
combination with the other fibrous materials usually employed for the manufacture of
roofing felt, and the product of this combination will be found to be much more
economical in the manufacture, and more effective in use than, roofing felt made in
the ordinary manner, and of the materials hitherto employed.
or
The "wood-wool" "wood-straw" being more absorbent than the fibrous
material, or materials ordinarily employed will take up a larger quantity of the tar &c.
and roofing felt made according to our invention will consequently be more water
repellant and more durable than that ordinarily produced.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim is :-
First. The improvement in the manufacture of roofing felt consisting in the
employment (substantially in the manner herein before described) of "wood wool" or
"wood-straw in substitution for, or in addition to, the fibrous materials hitherto
employed, in combination with coal tar or other similar waterproofing material or
composition.
Secondly we claim as a new manufacture roofing felt made by the combination
(substantially in the manner described) of "wood-wool" or "wood-straw" with coal
tar or other similar waterproofing material or composition.
Dated this 10th day of Ostaban 1000