CERTAIN IMPROVEMENTS IN THE MILLS USED FOR GRINDING COFFEE, MALT, AND OTHER ARTICLES
Year: 1815

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ARCHIBALD
KENRICK, of West Bromwich,. in the County of Stafford, Founder, send
greeting.
WHEREAS His most Excellent Majesty King George the Third did, by
His Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Twenty-third day of
May, in the fifty-fifth year of His reign, give and grant unto me, the
said Archibald Kenrick, my exors, admors, and assigns, His especial licence,
full power, sole privilege and authority, that I, the said Archibald Kenrick,
my exors, admors, and assigns, during the term of years therein mentioned,
should and lawfully might make, use, exercise, and vend, within England,
Wales, and the Town of Berwick-upon-Tweed, my Invention of "CERTAIN
IMPROVEMENTS IN THE MILLS USED FOR GRINDING COFFEE, MALT, AND OTHER
ARTICLES;" in which said Letters Patent there is contained a proviso that if
I, the said Archibald Kenrick, shall not particularly describe and ascertain
the nature of my said Invention, and in what manner the same is to be
performed, by an instrument in writing under my hand and seal, and cause
the same to be inrolled in His Majesty's High Court of Chancery within six
calendar months next and immediately after the date of the said Letters
Patent, that then the said Letters. Patent, and all liberties and priviledges
whatsoever thereby granted, should utterly cease, determine, and become

page_text: void, as in and by the same (relation being thereunto had) will more fully and
at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Archibald Kenrick, do hereby describe and ascertain my said improvements as
follows:-
They are applicable to those kind of mills which act by a revolving conical
cutter, having oblique teeth cut upon its external surface, and moving within
a stationary conical box, case, or barrel, which is cut with oblique teeth upon
its internal surface, the conical cutter being turned round by means of its
axle, and the coffee, malt, or other article being introduced into the box will
be cut and ground between the oblique teeth of the moving cutter and those
of the stationary box... ..
My first improvement is the means of fixing the box of the mill firmly
against a post, wall, or other support, by forming a flaunch or flat surface.pro-
jecting from the box or case at the end thereof in such manner that the
spindle of the cutter will be perpendicular to the said flat surface or flaunch,
which can be nailed, screwed, or otherwise fastened against a post, wall, table,
bench, or other fixed support, and firmly sustain the whole mill.
Secondly, the box of the mill may be supported or attached to a post, wall,
or table, by means of, à flaunch at the end of a stem or pillar projecting from
the side of the box in a direction perpendicular to the axis of the mill, and
therefore the flat surface of the said flaunch will be parellel to the said axis;
this stem or pillar to be formed of the same solid piece of metal as the box;
the flaunch may also be formed of the same solid piece or be united thereto
by screwing or otherwise."
: .
Thirdly, in the socket or collar for supporting the axis of the revolving
cutter. at the small end of the cone. This socket I make in the same solid
piece of metal with the box.
The Drawings hereunto annexed represent four different mills made
according to my improvements.
ין
In the first, Figures 1 and 2, A is the hopper, into which the matter to be
ground is introduced; B is the conical box, case, or barrel cut with teeth in
the inside; D, the spout, through which the coffee or malt runs when ground;
E is the spindle of the cutter with the handle F fixed upon the end of it;
the spindle passes thro' a socket formed in one piece of metal with the end
G. of the box, which is fastened in its place by two screws r, r.
Figure 3 is the cutter, shewn separately. K, Figure 1, is the regulating
screw, tapped thro' the end G of the box; its point bears against the large
end of the cutter and regulates the fineness to which the mill will grind by

page_text: making the cutter to enter more or less into the barrel or box. My improve-
ments are the flaunch H, H, formed out of the same piece of metal with the
box B, and by means whereof the mill can be attached to a firm support:
Another improvement is in the small end of the box B, which contains
the socket or collar for the support of the pivot a, Figure 3, at the small end
of the cutter; this end is formed in one piece with the said barrel or box...
Figure 4 is a section of what is called a box mill, to which my third
improvement is applied; viz, the socket 'R, at the large end of the box or
barrel B, B, for the support of the spindle, is formed in the same solid piece
of metal with the box or barrel; the socket or barrel in the cross bar at the
lower end I make both to receive the lower end of the axle of the mill, and
to contain by my regulating screw, by raising or falling, which the mill is
adjusted to grind finer or coarser. This cross bar is fixed in the usual way by
the two screws r, r. The external box or case M of the mill, together with
the drawer N and the bason A, may be made of cast iron or of wood, as usual.
Figure 5 and 6 shew two other views of my improvements. The mill in
Figure 5 has a bracket or frame P projecting from the side of the box
B, being made in the same solid piece of metal therewith and formed
with cross braces, or in any other form, at pleasure. The flaunch H, at
the end of the bracket, is either to fasten against the wall or support
the mill. Figure 6 has a stem or pillar S, which may be either hollow
or solid. Or mills made in the form of Figure 5 or 6 may be fixed upon
a table, bench, or counter, the flaunch of the bracket or pillar being fixed
thereupon. In this case the hopper must, of course, be placed to the
opposite side of the box B to that from which the bracket or pillar pro-
jects, and the spout must come out sideways or downwards; or the stem S,
Figure 6, if made hollow, may serve as a spout to convey the ground article
down into a drawer placed beneath. The handle F of the mill may be made
to fix on the spindle at the large end of the cutter, as in Figures 1, 2, 3,
and 5, or it may be made to fix on at the small end of the cutter, as in
Figure 4 and 6, in which cases my regulating screw K will be more conve-
nient to act at the end of the pivot, as before described in Figure 4, than
upon the end of the cutter. These mills may be made of wrought iron and
case-hardened, or they may be made of steel; but what I prefer is, to make
the whole of cast metal or cast iron.
In witness whereof, I, the said Archibald Kenrick, have hereunto set
my hand and seal, this Fourteenth day of November, in the year of
our Lord One thousand eight hundred and fifteen.
ARCH KENRICK. (L.S.)

page_text: AND BE IT REMEMBERED, that on the Fourteenth day of November,
in the year of our Lord 1815, the aforesaid Archibald Kenrick came before
our said Lord the King in His Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stampt according to
the tenor of the Statute made for that purpose.
Inrolled the Fourteenth day of November, in the year of our Lord
One thousand eight hundred and fifteen.