IMPROVE- MENTS IN THE MANUFACTURE OF LINSEED OIL, AND IN APPARATUS FOR THE SAME
Year: 1860

page_text: LETTERS PATENT to Richard Archibald Brooman, of 166, Fleet Street,
in the City of London,. Patent Agent, for the Invention of." IMPROVE-
MENTS IN THE MANUFACTURE OF LINSEED OIL, AND IN APPARATUS FOR THE
SAME." A communication from abroad by Joseph Poole Pirsson, of New
PROVISIONAL SPECIFICATION left by the said Richard Archibald
Brooman at the Office of the Commissioners of Patents, with his
Petition, on the 27th July 1860.
I, RICHARD ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of
London, Patent Agent, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN THE MANUFACTURE OF LINSEED OIL, AND IN APPARATUS
FOR THE SAME," (communicated to me from abroad by Joseph Poole Pirsson,
of New York,) to be as follows:-
This Invention consists of an improvement in the method of expressing the
oil from the meal, whereby a considerably increased product is obtained
without requiring any additional power, and with but a trifling increase in the
first cost of the apparatus employed for the purpose, and also of an improvement
in the apparatus employed for the purpose.
The most approved oil press as heretofore constructed consists of two
bydraulic rams operated alternately by one set of forcing pumps. One of

page_text: these rams is brought up and made to press upon a tier of bags, the pressure
being continued by continuing the action of the pump, say, for about six
minutes. The pressure is then allowed to run down, because the pump is to
be then employed bringing up and continuing the pressure of the other ram
for a like period.
The present improvement consists in a method of so operating the press
that the pressure is maintained on the first ram during the time that the second
is being brought up, as well as while the action of the pump,is continued on
that second ram, the time being as before, say, six minutes, and thus the meal
may be subjected to pressure through a period of, say, twelve minutes, while
yet the two tiers of bags are changed, and each ram worked as often as by the
old method of working. To effect this, a close fitting cock, such as a screwed
cone valve, is placed in the pipes leading from the pump to each of the rams,
and near the said rams, and this is in addition to the usual valves by which
those pipes communicate with the reservoir of the fluid employed and with the
pump. Now, when the pump has been in operation, say, for six minutes on
one of the rams, if the cone valve on the pipe to that ram is then screwed
down, the pressure will still be maintained, and the set of pumps may then be
employed in bringing up and maintaining the pressure on the other ram;
hence each parcel of meal is subjected to pressure for about twice the length
of time that it can be by the ordinary method of working, and it is found that
during this additional time a considerable quantity of oil is run off.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Archibald Brooman in the Great Seal Patent
Office on the 26th January 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
ARCHIBALD, BROOMAN, of 166, Fleet Street, in the City of London, Patent
Agent, send greeting...
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of July, in the year of our
Lord One. thousand eight hundred and sixty, in the twenty-fourth year of
Her reign, did, for. Herself, Her heirs and successors, give and grant unto
me, the said. Richard Archibald Brooman, Her special licence. that I, the
said Richard Archibald Brooman, my executors, administrators, and assigns,
or such others as I, the .said Richard Archibald Brooman,.my executors,
administrators, and assigns, should at any time, agree with, and no others,

page_text: 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 THE MANUFACTURE OF
LINSEED OIL, AND IN APPARATUS FOR THE SAME," (a communication from abroad
by Joseph Poole Pirsson, of New York), upon the condition (amongst others)
that I, the said Richard Archibald Brooman, my executors or administrators,
by an instrument in writing under my, or their, or one of their hands and seals,
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 Richard Archibald Brooman, 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, reference being had to the Drawings hereunto
annexed, that is to say :-
This Invention consists in an improvement in the method of expressing
the oil from the meal, whereby a considerably increased product is obtained
without requiring any additional power, and with but a trifling increase in the
first cost of the apparatus employed for the purpose, and also of an improve-
inent in the apparatus employed for the purpose.
The most approved oil press as heretofore constructed consists of two
hydraulic ramis operated alternately by one set of forcing pumps. One of
these rams is brought up and made to press upon a tier of bags, the pressure
being continued by continuing the action of the pumps, say, for about six
minutes.. The .pressure is then allowed to run down, because the .pump is
to be then employed in bringing up and continuing the pressure of the other
ram for a like period.
The present improvement consists in a method of so operating the press
that the pressure is maintained on the first ram during the time that the
second is being brought up, as well as while the action of the pump is con-
tinued on that second ram, the time being as before, say, six minutes, and
thus the meal may be subjected to pressure through a period of, say, twelve
minutes, while yet the two tiers of bags are changed, and each ram worked
as often as by the old method of working.
In the annexed Drawings the manner of arranging the connection between
the set of pumps and the two rams is shown. Figure 1 is an elevation (with
the front partly removed to shew the internal construction) of the box in

page_text: which the pipes and valves to effect the usual change are contained; Figure 2
is a horizontal section, the valves being removed. The box A is fitted upon
or forms part of the cover B of the reservoir of oil or other fluid employed to
operate the rams, and from which the set of: pumps draw it; c, c, are the
tubes leading from the pumps, and at d and e are cone valves of ordinary con-
struction geared together in pairs, by which the operations of the pump are
directed to either of the rams as desired, the pipes leading to those being
shown at f and g; h and i are the passages to the reservoir. The usual mode of
working has been after one tier of bags has been run up during a period of,
'say, six minutes to let that down again while the next was, being run up,
because the pumps alone maintain the pressure. I attach, however, to each
of the pipes ƒ and g which lead to the rams a close fitting valve or cock, and
when about to use the pump to bring up the second tier I close the valve
leading to that which has just been brought up, thus continuing steadily upon
the first tier the pressure during some additional minutes; hence each parcel
of meal is subjected to pressure during about twice the length of time that
it can be by the ordinary method of working, and it is found that during this
'additional time a considerable quantity of oil is run off, which otherwise would
remain in the oil cake.
And having now described the nature of the said Invention, and in what
manner the same is to be performed, I declare that I claim,-
First, the improved method of manufacturing linseed oil herein-before
described:
And, second, the employment of stop-cocks or valves in the pipes f and
manner and for the purpose herein-before described.
9,
in
In witness whereof, I, the said Richard Archibald Brooman, have here-
unto set my hand and seal, this Twenty-sixth day of January, One
thousand eight hundred and sixty-one.
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