IMPROVEMENTS IN MEANS OR APPARATUS FOR EXTRACTING OR EXPRESSING OIL OR GREASE FROM THE GREASY WASTE OF FIBROUS SUBSTANCES, OR OTHER SUBSTANCES CONTAINING OIL OR GREASE
Year: 1865

page_text: LETTERS PATENT to William Teall, of Wakefield, in the County of
York, Ironfounder and Grease Manufacturer, and Abraham Naylor,
of Bradford, in the same County, Overlooker, for the Invention of
"IMPROVEMENTS IN MEANS OR APPARATUS FOR EXTRACTING OR EXPRESSING
OIL OR GREASE FROM THE GREASY WASTE OF FIBROUS SUBSTANCES, OR OTHER
SUBSTANCES CONTAINING OIL OR GREASE."
Sealed the 25th July 1865, and dated the 30th January 1865.
PROVISIONAL SPECIFICATION left by the said William Teall and
Abraham Naylor at the Office of the Commissioners of Patents, with
their Petition, on the 30th January 1865.
We, WILLIAM TEALL, of Wakefield, in the County of York, Ironfounder
and Grease Manufacturer, and ABRAHAM NAYLOR, of Bradford, in the same
County, Overlooker, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN MEANS OR APPARATUS FOR EXTRACTING OR EXPRESSING OIL OR
GREASE FROM THE GREASY WASTE OF FIBROUS SUBSTANCES, OR OTHER SUBSTANCES
CONTAINING OIL OR GREASE," to be as follows:-
This Invention relates to that kind of apparatus in which a perforated
cylindrical vessel is placed within another cylindrical vessel capable of holding
water or other liquids, and the substances or materials to be operated upon
are put into bags and placed in the perforated vessel, and a piston or ram is
caused to press thereon.
Now our improvements consist in constructing this perforated vessel. eithe:
of a cylindrical or other suitable form, and in two or more parts longitudinally,.

page_text: which parts are held together by belts or hoops placed around them. The
hoops are jointed in one or more places, and connected by cotters, wedges, or
other suitable means, so as to be made tight thereon, and readily disconnected
to allow the parts of the vessel to open or expand. We also employ within
this vessel another vessel of finer perforations, or with smaller holes, which is
lined within with finely perforated zinc, or other metal, or material, or wire
gauze, or woven fabric. The substances to be operated upon are placed in
this vessel (instead of being placed in bags as heretofore) and pressed by piston
or ram in the usual manner. And to prevent injury to the lining by the
action of the piston we place longitudinal rods or slips of iron or other
material at suitable distances apart on the face of the lining.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Teall and Abraham Naylor in the Great Seal Patent
Office on the 29th July 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
TEALL, of Wakefield, in the County of York, Ironfounder and Grease Manu-
facturer, and ABRAHAM NAYLOR, of Bradford, in the same County, Overlooker,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirtieth day of January, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-eighth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said William Teall and Abraham Naylor, Her special licence that we, the
said William Teall and Abraham Naylor, our executors, administrators, and
assigns, or such others as we, the said William Teall and Abraham Naylor, our
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 MEANS OR APPARATUS FOR EXTRACTING
OR EXPRESSING OIL OR GREASE FROM THE GREASY WASTE OF FIBROUS SUBSTANCES,
OR OTHER SUBSTANCES CONTAINING OIL OR GREASE," upon the condition (amongst
others) that we, the said William Teal and Abraham Naylor, our executors
or administrators, by an instrument in writing under our, or their, or one of
our or their hands and seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be

page_text: 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 we, the said William Teall and Abraham Naylor,
do hereby declare the nature of our 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):-
This Invention relates to that kind of apparatus in which a perforated
cylindrical vessel is placed within another cylindrical vessel capable of holding
water or other liquid, and the substances or materials to be operated upon are
put into bags and placed in the perforated vessel, and a piston or ram is caused
to press thereon.
Now our improvements consist in constructing this perforated vessel of
either cylindrical or other suitable form, and in two or more parts longi-
tudinally, which parts are held together by belts or hoops placed around them.
The hoops are jointed in one or more places, and connected by cotters, wedges,
or other suitable means, so as to be made tight thereon, and readily discon-
nected to allow the parts of the vessel to open or expand. We also employ
within this vessel another vessel of finer perforations, or with smaller holes
therein, which is also in two or more parts longitudinally, and lined within
with finely-perforated zinc, or other metal, or material, or wire gauze, or woven
fabric. The substances to be operated upon are placed in this vessel (instead
of being placed in bags as heretofore) and pressed by piston or ram on the
usual manner. And to prevent injury to the lining by the action of the piston
we place longitudinal rods or slips of iron or other material at suitable distances
apart on the face of the lining.
Heretofore the bags employed to retain the greasy waste, rags, or fabrics,
or fibrous substance containing oil or greasy matters, and placed in the
cylinder or press therewith were to act as strainers, and also as means for the
removal of the waste or fibrous substances after the oil or grease had been ex-
tracted, but the very great pressure required to be brought thereon burst the
bags open, and were thereby destroyed, so that new bags had to be used at
almost every fresh charge of the press, thus rendering bags a very costly item
of expenditure in the process of extracting these greasy matters. Also, the
removal of the waste or fibrous substances from the press by means of these
bags was both a tedious and very unpleasant part of the process of extracting
the oil or grease. To obviate these evils, we employ another or additional
cylinder more finely perforated, and made in two or more parts longitudinally,
which is placed within the ordinary perforated cylinder, and a lining of zinc or

page_text: other material still more finely perforated, or a lining of woven fabric of
suitable fineness or quality, and full size of the interior of the cylinder, is
placed within it. The greasy waste or other substances to be operated upon, or
the oil or grease therein to be extracted therefrom, are placed therein without
the bags, and pressure is applied by piston or ram as heretofore; the fine
perforations of this cylinder and its linings constituting a strainer of the oil or
grease. And in order to remove the waste materials or substances therefrom,
this additional perforated cylinder is lifted out from the ordinary cylinder with
its contents, which are caused to be held therein by means of a hoop or strap
temporarily placed around the said cylinder, and having a loose bottom therein,
or chains placed temporarily across the bottom, until the said cylinder is
entirely removed from the ordinary cylinder, when by a slackening of the
hoop, and removal of the loose bottom or chains, the contents will drop out at
the bottom of the said cylinder. And in order to the more easy lifting of this
cylinder and its contents, the ordinary cylinder may be made in two or more
parts longitudinally, and held together with belts which are jointed and cottered,
or otherwise held together during the operation, and which may be readily
loosened, so that the said cylinder may open a little at the joints to allow the
other cylinder to be more easily lifted out therefrom. However we find by
experiment that by the employment of a little more power this inner perforated
cylinder, with its contents, can be lifted out without the trouble of slackening
the belts of the outer perforated cylinder, hence we are enabled to dispense
with the use of belts or hoops, and consequently the constructing of the
ordinary perforated cylinder in two or more parts as herein set forth. Also
we find that in some cases we can dispense with the use of a lining of perforated
zinc or other material, or woven fabric.
In witness whereof, I, the said Abraham Naylor, for and on behalf of
myself and the said William Teall, have hereunto set my hand and
seal, this Twenty-seventh day of July, One thousand eight hundred
:
Signed, sealed, and delivered by
the. within-named Abraham
Naylor, in the presence of
WM. TASKER, Patent Agent,
Halifax.
ABRAHAM NAYLOR. (L.s.)