IMPROVEMENTS IN WRAPPERS OR ENVELOPES USED IN OIL CAKE MAKING. AND FOR EXTRACTING OIL FROM OLEAGINOUS SEEDS
Year: 1874

page_text: LETTERS PATENT to Henry Searle, of Hull, in the County of York,
for the Invention of "IMPROVEMENTS IN WRAPPERS OR ENVELOPES USED
IN OIL CAKE MAKING. AND FOR EXTRACTING OIL FROM OLEAGINOUS SEEDS."
PROVISIONAL SPECIFICATION left by the said Henry Searle at the
Office of the Commissioners of Patents, with his Petition, on the
8th May 1874.
I, HENRY SEARLE, of Hull, in the County of York, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN WRAPPERS OR
ENVELOPES USED IN OIL CAKE MAKING, AND FOR EXTRACTING OIL FROM OLEAGINOUS
SEEDS," to be as follows:-
My Invention relates to improvements in the manufacture of wrappers
or envelopes used in expressing oil from seeds, and in oil cake making.
The wrappers or envelopes heretofore employed have been constructed
of iron, wood, and paper, which materials are costly to make, or are
wanting in durability, and consequently expensive, owing to the frequent
repairs which they require.

page_text: By my Invention I am enabled to produce a less expensive and more
durable appliance, with which object I make such wrappers of a com-
position of vulcanized india-rubber and gutta percha (or india-rubber
alone), with wire gauze or canvas embedded therein to prevent
elongation.
I manufacture these wrappers by casting the composition in a mould
in which one or more layers of wire gauze or canvas are inserted while
the wrapper is being cast.
The envelope or wrapper is made in two halves or plates hinged
together by flexible couplings or straps, and the inner surfaces of the
wrapper will be corrugated, the corrugations being cast from the mould.
A raised edge may be cast along each side of the plate, or the ordinary.
edges may be employed, as preferred.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henry Searle in the Great Seal Patent Office
on the 5th November 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
Searle, of Hull, in the County of York, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing. date the Eighth day of May, in the year
of our Lord. One thousand eight hundred. and seventy-four, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Henry Searle, Her special
licence that I, the said Henry Searle, my executors, administrators,
and assigns, or such others as I, the said Henry Searle, 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 make, 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
WRAPPERS OR ENVELOPES USED IN OIL CAKE MAKING, AND FOR EXTRACTING OIL
FROM OLEAGINOUS SEEDS," upon the condition (amongst others) that I, the
said Henry Searle, my executors or administrators, by an instrument in

page_text: writing under my, or their, or one of their hands and seals, should par-
ticularly describe and ascertain the nature of the said Invention, and in
what manner the same was to be performed, 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 Henry Searle, 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, that is to say :-
1
My Invention relates to improvements in the manufacture of wrappers
or envelopes used in expressing oil from seeds, and in oil cake making.
The wrappers or envelopes heretofore employed have been constructed
of iron, wood, and paper, with which materials they are costly to make,
or are wanting in durability, and consequently expensive, owing to the
frequent repairs which they require.
My Invention, whereby I am enabled to produce a less expensive and
more durable article, consists in making such wrappers of ordinary
vulcanized india-rubber, or of the composition of india-rubber with other
ingredients known as ebonite or vulcanite, wire gauze or canvas being
imbedded in the thickness of the plates composing the wrapper, if
necessary, to prevent elongation.
The envelope or wrapper is made in two halves or plates, which are
afterwards hinged together by flexible couplings or straps in the ordinary
way, each half being cast in a mould in which one or more layers of
wire gauze and canvas are inserted while the composition is being cast,
so as to be imbedded about midway in the thickness of the cast plate.
The inner surfaces of the wrapper are corrugated, the corrugations being
cast from the mould which is suitably formed for the purpose.
A raised edge may be cast along each side of the plates, or the ordinary
hair edges may be employed, as preferred.
Having described the nature of the Invention, and the manner of
performing the same, I declare that what I claim as my Invention to be
protected by the herein-before in part recited Letters Patent is, manu-
facturing the wrappers or envelopes used in expressing oil from seeds
and in oil cake making of vulcanized india-rubber, or of the material or

page_text: composition known as ebonite or vulcanite, with or without one or more
layers of wire gauze or canvas embedded therein, as herein described.
In witness whereof, I, the said Henry Searle, have hereunto set my
hand and seal, this Fourth day of November, in the year of our
Lord One thousand eight hundred and seventy-four.