IMPROVEMENTS IN MILLS OR MACHINERY FOR GRINDING OR. CUTTING BONES, WOOD, OR OTHER LIKE SUBSTANCES
Year: 1854

page_text: LETTERS PATENT to John Parry the younger, of Liverpool, in the County
of Lancaster, for the Invention of "IMPROVEMENTS IN MILLS OR MACHINERY
FOR GRINDING OR. CUTTING BONES, WOOD, OR OTHER LIKE SUBSTANCES."-A
communication.
Sealed the 22nd August 1854, and dated the 2nd March 1854.
PROVISIONAL SPECIFICATION left by the said John Parry at the Office
of the Commissioners of Patents, with his Petition, on the 2nd March
1854.
I, JOHN PARRY the younger, of Liverpool, in the County of Lancaster, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN MILLS OR
MACHINERY FOR GRINDING OR CUTTING BONES, WOOD, OR OTHER LIKE SUBSTANCES"
to be as follows:-
This Invention consists of an upright rotating shaft or spindle, upon which a
barrel is formed by a series of circular plates or wheels keyed thereto (say
eight, of two inches thickness and fourteen inches diameter); on the edge of
the disks recesses are formed (say four in each section), into which a number
of saws or cutters (say sixteen in each) are laid horizontally to the upright
shaft, and there securely fastened in such a way that they can be taken out to
sharpen or repair, and when reduced in width they can be backed up, so as to
attain the required projection from the face of the cylinder. The barrel is
enclosed by an exterior cover or hopper, which flanges outwards from the
bottom thereof to a convenient distance upwards; this hopper or outer covering
is divided internally by strong perpendicular partitions or plates, extending

page_text: nearly to the face of the cylinder, the object of which is to prevent the bones
(or other articles to be reduced by the action of the saws or cutters revolving
against them) passing round with the barrel.
The bones or other articles to be reduced are placed in the hopper, and by
their own gravity fall down the inclined side of the hopper against the saws or
cutters of the revolving barrel, and when ground will fall below the drum into
suitable receptacles. The motive power for working the mill is applied to the
upright shaft or spindle.
This Invention is not confined to the proportions or dimensions given in the
foregoing description.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Parry in the Great Seal Patent Office on the 31st
August 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
PARRY the younger, of Liverpool, in the County of Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of March, in the year of our Lord One
thousand eight hundred and fifty-four, in the seventeenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
John Parry, Her special license that I, the said John Parry, my executors,
administrators, and assigns, or such others as I, the said John Parry, 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 and Ireland, the Channel Islands, and
Isle of Man, an Invention for "IMPROVEMENTS IN MILLS OR MACHINERY FOR
GRINDING OR CUTTING BONES, WOOD, OR OTHER LIKE SUBSTANCES," being a com-
munication from abroad, upon the condition (among others) that I, the said
John Parry, 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said John Parry, 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,

page_text: reference being had to the accompanying Drawings, and the letters and
figures marked thereon (that is to say):-
To construct a mill or machine according to the said Invention, I make use
of an upright rotating shaft or spindle, upon which is formed a barrel by a
series of circular plates or wheels keyed thereto (say eight of each, two inches
in thickness and fourteen inches diameter); on the edge of the disks recesses
are formed (say four in each section), into which a number of saws or cutters
(say sixteen in each) are laid horizontally to the upright shaft, and there
securely fastened, but in such a way that they can be taken out to sharpen or
repair, and when reduced in width, they can be backed up so as to attain the
required projection from the face of the cylinder.
The barrel is enclosed by an exterior cover or hopper, which flanges outwards
from the bottom thereof to a convenient distance upwards. This hopper or
outward covering is divided internally by strong perpendicular plates, extending
-nearly to the face of the cylinder, the object of which is to prevent the bones
or other articles which are to be reduced by the action of the saws or cutters
revolving against them passing round with the barrel.
The bones or other substances to be reduced are thrown into the hopper, and
by their own gravity fall down the inclined sides of the hopper against the saw
cutters of the revolving barrel, and when ground will fall below the drum into
suitable receptacles. The motive power required to work the mill is applied
to the upright shaft or spindle.
That this Invention may be the more readily seen and understood, I have
hereunto annexed Drawings of a machine constructed according to the said
Invention. Like letters refer to similar parts.
Figure 1 shows an elevation of the machine, with a portion of the hopper
removed, to expose to view the barrel and
(Section of hopper taken at A, A, Figure 2.)
and Figure 3 is a section of one of the disks
the recesses for the saw cutters.
cutters, and the dividing plates.
Figure 2 is an horizontal view,
forming the barrel, and showing
B, hopper, bolted together at C, flanges, between which are bolted D, the
dividing plates. E, shaft or spindle, upon which the sections forming the
barrel are mounted. F, saw-toothed cutters, secured in the recess formed
in the edges of the disks. G, (Figure 2 and 3,) a key, by which the sections
forming the barrels are securely held upon the shaft. H, stays or supports
of the dividing plates D. K, wedges used to secure saw cutters firmly in
the recesses of the barrel segments. In conclusion, I wish it to be understood
that this Invention is not confined to the exact dimentions or detail as herein-
before described.

page_text: Having now described the said Invention, and in what mode the same may
be performed, as communicated to me by my foreign correspondent residing
abroad, what I claim is,-
First, the combination of the various parts of the machinery, as herein-before
described, for grinding or cutting bones, wood, or other like substances.
Secondly, the use of cutters formed with saw-shaped teeth for grinding or
reducing bone, wood, or other like substances, as herein-before described.
In witness whereof; I, the said John Parry the younger, have hereunto
set my hand and seal, this Thirtieth day of August, in the year of
our Lord One thousand eight hundred and fifty-four..
Witness,
WILLIAM WALKER.
JOHN (L.S.) PARRY, JUN'.