IMPROVEMENTS IN THE MANU- PROVISIONAL SPECIFICATION
Year: 1865

page_text: LETTERS PATENT to William Ambler, of Keighley, in the County of York,
Paper Merchant, for the Invention of "IMPROVEMENTS IN THE MANU-
PROVISIONAL SPECIFICATION left by the said William Ambler at the
Office of the Commissioners of Patents, with his Petition, on the
26th September 1865.
I, WILLIAM AMBLER, of Keighley, in the County of York, Paper Merchant,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN-
THE MANUFACTURE OF KNICKERBOCKERS, AND SUCH LIKE COVERINGS FOR THE LEGS,"
to be as follows:-
The object of the improvements is to obtain a cheap waterproof covering
for the legs by the use for the purpose of a material having the appearance
of leather, but of considerably less cost, and the improvements consist in
combining what is commonly called American cloth and paper pulp, or paper ·
to the thickness desired, and in waterproofing the paper surface thereof
if desired.
In using paper pulp, the American cloth will be passed on to and with the
back side thereof towards the pulp until the desired thickness or quantity has
been obtained. When sheet paper is employed, the paper of the thickness.
desired may be conducted on to the web of fabric, and both united together
by the aid of paste or other cement. In either.case the perfect adhesion and

page_text: drying may be effected by passing through heated press rollers. The material
thus obtained will be cut into the forms desired and stitched. To the paper
side may be applied a solution of india-rubber or other waterproof material,
and the lower edge may also be lined with a thin piece of leather to increase
the durability thereof.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Ambler in the Great Seal Patent Office on the
24th March 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
AMBLER, of Keighley, in the County of York, Paper Merchant, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of September, in the year of our
Lord One thousand eight hundred and sixty-five, in the twenty-ninth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said William Ambler, Her special licence that I, the said William Ambler,
my executors, administrators, and assigns, or such others as I, the said William
Ambler, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might niake, use, 'exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention, for "IMPROVEMENTS IN
THE MANUFACTURE OF KNICKERBOCKERS, AND BUCH LIKE COVERINGS. FOR THE LEGS,'
upon the condition (amongst others.) that L, the said William-Ambler, my
executors or administrators, by an instrument in writing under my, or their,
or one of their bands and seals, should particularly describe and ascertain the
nature of the said Invention, and in, what manner the same was to be per-
formed, and cause the same to be filed in the Great Seal Patent Office within
six calendar months next and immediately after the date of the said Letters
Patent.
"
NOW KNOW YE, that I, the said William Ambler, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:
The object of the improvements is to obtain a cheap. waterproof covering
fur the legs by the use. for the, purpose of a material having the appearance of

page_text: leather, but of considerably less cost, and the improvements consist in com-
bining for this purpose what is commonly called American cloth and paper
pulp, or paper to the thickness desired. The paper surface may be rendered
waterproof by being saturated with india-rubber or other waterproofing
solution.
In using paper pulp the American cloth will be passed out with the back
side thereof towards the pulp until the desired thickness or quantity thereof
bas been obtained. When sheet paper is employed, the paper of the thick-
ness desired, or of several thicknesses may be conducted on to the web of
fabric, and both united together by the aid of paste, or other cement. In
either case the perfect adhesion and drying of the combined materials may be
effected by passing them between heated press rollers, or by hanging them in
a loft or hot room. The material or combined fabric thus obtained will be
cut into the forms desired and stitched. To the paper side may be applied a
solution of india-rubber or other waterproof material, and the lower edge
may also be lined with a thin piece of leather to increase the durability
thereof.
Having thus described my Invention, and means which I adopt in carrying.
the same into effect, I would have it understood that what I claim is, the
manufacture of knickerbockers and such like coverings for the legs, by the
use for the purpose of fabric or material prepared substantially as explained.
In witness whereof, I, the said William Ambler, have hereunto set my
hand and seal, this Twenty-second day of March, in the year of our
Lord One thousand eight hundred and sixty-six.
WILLIAM AMBLER. (L.S.)