IMPROVEMENTS IN GRINDING OR PULVERIZING BONES
Year: 1854

page_text: LETTERS PATENT to William Aristides Vérel, of Macduff, in the County
of Banff, Scotland, Merchant, for the Invention of "IMPROVEMENTS IN
GRINDING OR PULVERIZING BONES."
Sealed the 13th February 1855, and dated the 23rd November 1854.
PROVISIONAL SPECIFICATION left by the said William Aristides Vércl at
the Office of the Commissioners of Patents, with his Petition, on the
23rd November 1854.
I, WILLIAM ARISTIDES VÉREL, of Macduff, in the County of Banff, Scotland,
Merchant, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN GRINDING OR PULVERIZING BOXES" to be as follows:-
My Invention consists in substituting grinding stones for the ordinary iron-
toothed rollers. The kind of stone which I prefer to use for the purpose is
granite, but other kinds of stone may be employed. The mode of operating
upon the bones is as follows:-The bones having been crushed by the ordinary
bone-mill cylinders, and reduced, so as to be capable of passing through a
quarter or half-inch riddle, are then supplied to the hopper of a mill, such as
is ordinarily used for grinding flour or meal, and in passing between the stones
become ground to a fine powder. The bones thus reduced are passed through
a fine wire sieve, in order to separate the remaining small thin particles of
bone from the powder.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Aristides Vérel in the Great Seal Patent Office on
the 3rd May 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ARISTIDES VÉREL, of Macduff, in the County of Banff, Scotland, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of November, in the year of our
Lord One thousand eight hundred and fifty-four, in the eighteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said William Aristides Vérel, Her special license that I, the said William
Aristides Vérel, my executors, administrators, and assigns, or such others as I,
the said William Aristides Vérel,. ny_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 "IM-
PROVEMENTS IN GRINDING OR PULVERIZING BONES," upon the condition (amongst
-others) that I, the said William Aristides Vérel, by an instrument in writing
under my 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 William Aristides Vérel, do hereby
declare the nature of my 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):-
My Invention of "Improvements in Grinding or Pulverizing Bones" consists
in substituting grinding stones for the ordinary iron-toothed rollers. The kind
of stone which I prefer to use for the purpose_is_granite, but other kinds of
stone may be employed. The mode of operating upon the bones is as follows:-
The bones having been crushed by the ordinary bone-mill cylinders, and
reduced, so as to be capable of passing through a quarter or half-inch riddle,
are then supplied to the hopper of a mill, such as is ordinarily used for grind-
ing flour or meal, and in passing between the stones become ground to a
fine powder. The bones thus reduced are passed through a fine wire sieve,
in order to separate the remaining small thin particles of bone from the
powder.

page_text: The revolving stone may be mounted on a vertical shaft, and driven by
means of bevil gear from a horizontal shaft, set in motion by any ordinary
prime mover, in the usual manner for grinding corn. I have found it con-
venient to use stones of about four feet one inch in diameter, and to drive the
revolving stone at a speed of about one hundred and ten revolutions per
minute; but I do not confine myself to such size for the stones, nor to such
speed. The admission of the pieces or portions of bones from the hopper to
the stones may be regulated by means of hinged valves or shutters fixed at the
lower part of the hopper.
I have not thought it necessary to describe the mechanism above referred
to more particularly, nor to represent it by a Drawing, as it is so well known
in its application to grinding corn; and my Invention does not relate to any
particular form or arrangement of mechanism.
Having thus described the nature of my Invention, and in what manner
the same is to be performed, I would have it understood that I do not
mean or intend to confine myself to any particular form of stone or arrange-
ment of mechanism combined therewith, in order to constitute a grinding
apparatus or mill; but what I claim as of my Invention is, the substitution
of grinding stones, by means of which bones can be reduced to a powder,
for the ordinary iron-toothed rollers, used in bone mills.
In witness whereof, I, the said William Aristides Vérel, have hereunto
set my hand and seal, this Twenty-seventh day of April, in the year of
our Lord One thousand eight hundred and fifty-five.
5 GEORGE RIDDELL,
Witness.
WILLIAM ARISTIDES (L.s.) VÉREL.