IMPROVEMENTS IN APPARATUS FOR CHOPPING OR MINCING ANIMAL, VEGETABLE, AND OTHER SUBSTANCES.”
Year: 1870

page_text: LETTERS PATENT to William Francis Dearlove, of No. 4, Judd
Street, Brunswick Square, in the County of Middlesex, for the
Invention of "IMPROVEMENTS IN APPARATUS FOR CHOPPING OR MINCING
ANIMAL, VEGETABLE, AND OTHER SUBSTANCES.”
PROVISIONAL SPECIFICATION left by the said William Francis Dear-
.
love at the Office of the Commissioners of Patents, with his
Petition, on the 26th January 1870.
"
I, WILLIAM FRANOIS DEARLOVE, of No. 4, Judd Street, Brunswick
Square, in the County of Middlesex, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN APPARATUS FOR CHOPPING OR MINCING
ANIMAL, VEGETABLE, AND OTHER SUBSTANCES," to be as follows:-
The apparatus which forms the subject of this Invention consists of a
semicircular board or block of wood, at the centre of the straight side
of which is placed a vertical metallic pin or pillar, which is arranged so
as to be capable of rotating in a suitable bearing attached to the board
and having a slot in it for the end of the knife, as herein-after mentioned.

page_text: A frame or vertical rim of metal either with or without a lid or lids and
by preference of the form of a segment of a circle is fixed to and under
the bars herein-after mentioned, and is capable upon the pin or piller
being rotated of being moved with the same over and upon the surface
of the board, the pin or pillar acting as a centre. Two metallic bars
with an aperture between the same of sufficient width to admit the knife
herein-after mentioned are fixed in the pin or pillar and across the
metallic frame in a radial direction towards the circular part of the
board. A mincing or chopping knife having a slot at one end is pivoted
at such end in the slot in the pin or pillar, and when down on the board
and inside the frame projects a little behind and beyond the pin or pillar.
The knife is provided at the other end with a suitable handle, and is so
placed as to work upwards and downwards through the before mentioned
aperture between the bars. The handle end of the knife is formed of an
acute angular shape with its cutting edge, this angular end upon the
knife being pressed downwards catching on to and working upon the
inside end of the bars, which are of a bevilled form, so as to have a
slanting and sliding cutting motion towards the pin or pillar. The other
end of the knife when down on the board and inside the frame projects
behind and beyond the pin or pillar and is acted upon so as to be forced
forwards and upward in the upward motion of the knife by a volute or
other suitable spring, which is placed at the back of the pin or pillar,
and at the back of the before-mentioned slot in the knife or end of the
knife.
SPECIFICATION in pursuance of the conditions of the Letters Patent, 2
filed by the said William Francis Dearlove in the Great Seal Patent
Office on the 26th July 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
FRANCIS DEARLOVE, of No. 1, Judd Street, Brunswick Square, in the
County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of January, in the year of
our Lord One thousand eight hundred and seventy, in the thirty-third
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said William Francis Dearlove, Her special licence
3

page_text: beyond the pin or pillar. The knife is provided at the other end with
a suitable handle, and is so placed as to be capable of working upwards
and downwards through the before-mentioned aperture or space between
the bars. The handle end of the knife forms an acute angle to the
cutting edge; this angular end upon the knife being pressed downwards 5
striking on to and working upon the bars at the end of the aperture or
space between the same (the junction of the bars being made of a
bevilled form) so as to have a slanting and sliding cutting motion
towards the pin or pillar. The other end of the knife when down on
the board and inside the frame projects behind and beyond the pin or 1
pillar, and is acted upon so as to be forced forwards and upwards in
the upward motion of the knife by a volute or other suitable spring
which is fixed on the top of the pin or pillar and at the back of the
before-mentioned slot in the end of the knife.
I will now proceed to refer to the annexed Drawing, from which the 1
nature of my said Invention will be more clearly understood. A is
the board or block; B is the vertical frame or rim; C is the knife;
a, a, are the bars with the aperture or space between; D is the pin or
pillar; b is the spring, and c is the slot in the end of the knife, and
⚫ the form of which greatly facilitates the action of the spring in sending 2
the knife upwards when relieved from pressure on the handle, thus
making it to some extent self-acting in its upward motion.
It is obvious that instead of employing two bars as before mentioned
one bar having a suitable slot formed therein may be used. The appa-
ratus may be secured to a table or other horizontal surface by means of 2
a clamp, as shewn in the Drawing, or by any other suitable means.
The apparatus which forms the subject of my said Invention possesses
many advantages, as when in action the articles operated upon are
prevented by the vertical frame from being scattered, whilst by the
movement of the latter over the surface of the board or block the 80
substance under treatment is stirred and every portion thereof readily
subjected to the action of the knife. The lids with which the apparatus
may be furnished afford a convenient means of preventing the escape
of effluvia given off by such articles as onions when being chopped. It
should be observed that the blade of the knife is constantly cleansed 3
and freed from the materials under treatment by its passage between
the bars.

page_text: that I, the said William Francis Dearlove, my executors, administrators,
and assigns, or such others as I, the said William Francis Dearlove, 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 ana
Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN APPARATUS FOR CHOPPING OR MINCING ANIMAL, VEGETABLE, AND
OTHER SUBSTANCES," upon the condition (amongst others) that I, the said
William Francis Dearlove, my executors or administrators, by an instru-
ment 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 William Francis Dearlove, do hereby
declare the nature of my said Invention, and in what manner the
samo is to be performed, to be particularly described and ascertained in
and by the following statement, reference being had to the Drawing.
hereunto annexed and to the letters marked thereon, that is to say :-
The apparatus which forms the subject of my said Invention consists
of a semicircular board or block of wood, at the centre of the straight
side of which is placed a vertical metallic pin or pillar, the same being
so arranged as to be capable of rotating in a suitable bearing attached to
the board or block, and having a slot therein to receive the end of the knifo
herein-after mentioned. A frame or vertical rim of metal either with or
without a lid or lids, and by preference of the form of a segment of a
circle, is fixed to and under the bars herein-after mentioned, and is capable
upon the pin or pillar being rotated of being moved with the same over
and upon the surface of the board or block, the pin or pillar acting as a
centre for such motion. Two metallic bars with an aperturo or space
between the same of sufficient width to admit the knife herein-after men-
tioned are fixed in or attached to the pin or pillar, and across the metallic
frame or rim in a radial direction towards the circular edge of the board
or block. A mincing or chopping knife having an inclined slot at one
end is pivoted at such end in the slot in the pin or pillar, and when
down on the board and inside the frame projects a little behind and

page_text: Having thus declared and ascertained the nature of my said Inven-
tion, and in what manner the same is to be performed, I would observe
in conclusion that what I consider novel and original, and therefore
claim as being the Invention secured to me by the said herein-before
in part recited Letters Patent is, the combination and arrangement of
parts and mechanism substantially as and for the purposes herein-
before described and set forth, or any mere modifications thereof.
In witness whereof, I, the said William Francis Dearlove, have
hereunto set my hand and seal, this Twenty-sixth day of July,
in the year of our Lord One thousand eight hundred and
seventy.
WILL". F. DEARLOVE. (L.S.)