IM- PROVEMENTS IN APPARATUS TO BE EMPLOYED IN EXPRESSING OILS AND FATTY MATTERS
Year: 1867

page_text: LETTERS PATENT to James Thom, of Hull, in the County of the Town or
Borough of Kingston-upon-Hull, Mechanic, for the Invention of " IM-
PROVEMENTS IN APPARATUS TO BE EMPLOYED IN EXPRESSING OILS AND FATTY
MATTERS."
Sealed the 10th December 1867, and dated the 11th June 1867.
PROVISIONAL SPECIFICATION left by the said James Thom at the
Office of the Commissioners of Patents, with his Petition, on the
11th June 1867.
I, JAMES THOM, of Hull, in the County of the Town or Borough of
Kingston-upon-Hull, Mechanic, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN APPARATUS TO BE EMPLOYED IN EXPRESSING...
OILS AND FATTY MATTERS," to be as follows:-
This Invention relates to certain improvements upon the Invention for
which Letters Patent were granted to me bearing date the 1st of December
1863, No. 3018, whereby a considerable saving in the wear and tear of bags
is effected, and a larger quantity of oil is expressed from the same amount of
oil-yielding substance.
According to my present Invention I propose to make the raised o
bevelled sides of my pressing plates or surfaces of such a width that when the..

page_text: bag is bulged outwards laterally by the pressure thereon the edges of the
plates will by reason of their increased width have no tendency whatever to
cut or injure the bags.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Thom in the Great Seal Patent Office on the
10th December 1867,
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES THOM,
of Hull; in the County of the Tawn or Borough of Kingston-upon-Hull,
Mechanic, send greeting.
WHEREAS Her mast Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh day of June, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirtieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said James Thom, Her special license that I, the said James Thom,
my executors, administrators, and assigns, or such others as I, the said James
Thom, my executors, administrators or 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 APPARATUS TO
BE EMPLOYED IN EXPRESSING OILS," upon the condition (amongst others)
that I, the said James Thom, my executors or fadministrators, by an instru-
ment in writing under iny hand and seal, should particularly 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 James Thom, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, reference being had to the accompanying Drawings, and to the
letters and figures marked thereon, that is to say -
My said Invention relates to certain improvements upon the Invention for
which Letters Patent were granted to me bearing date the First of December,
One thousand eight hundred and sixty-three, No. 3018, whereby a considerable

page_text: saving in the wear and tear of bags is effected, and a larger quantity of oil is
expressed from the same amount of oil-yielding substance.
According to my present Invention I propose to make the raised or bevelled
sides cf my pressing plates or surfaces of such a width that when the bag is
bulged outwards laterally by the pressure thereon the edges of the plates will
by reason of their increased width have no tendency whatever to cut or injure
the bags.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe the same and for that purpose shall
refer to the several Figures on the annexed Sheet of Drawings, the same letters
of reference indicating corresponding parts in both Figures.
Figure 1 of my Drawings represents a plan of my improved pressing plate,
and Figure 2 is a corresponding transverse section of the same. In this
improved form of plate I make the raised or bevelled sides a, a, of sufficient
extra width to prevent the cutting of the bag by the edge of the plate when
bulged outwards. The dotted lines 1, 2, in my Drawings represent the
original width of the raised or bevelled sides, and show the extra width which
I have added thereto in order to prevent the bursting of the bags.
Having now described and particularly ascertained the nature of my said
Invention and the manner in which the same is or may be used or carried
into effect, I would observe in conclusion that what I consider to be novel
and original, and therefore claim as the Invention secured to me by the herein-
before in part recited Letters Patent is, the constructing of pressing plates
or surfaces for the purpose herein-before referred to with the raised or
bevelled sides thereof of such a width as to prevent any tendency to bursting
of the bags, as herein-before described and illustrated by my Drawings.
In witness whereof, I, the said James Thom, have to this my Specification,
set my hand and seal, this Sixth day of December, One thousand eight
hundred and sixty-seven.
JAMES THOM. (L.S.)