IMPROVEMENTS IN MACHINERY OR APPARATUS FOR GRINDING CORN
Year: 1875

page_text: LETTERS PATENT to Joseph Bedford, of Leeds, in the County of
York, Engineer, for the Invention of "IMPROVEMENTS IN MACHINERY
OR APPARATUS FOR GRINDING CORN."
Sealed the 28th December 1875, and dated the 2nd July 1875.
PROVISIONAL SPECIFICATION left by the said Joseph Bedford at
the Office of the Commissioners of Patents, with his Petition, on
the 2nd July 1875.
I, JOSEPH BEDFORD, of Leeds, in the County of York, Engineer,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN MACHINERY OR APPARATUS FOR GRINDING CORN," to be as follows:-
This Invention relates to means to be employed for keeping the faces
of the stones parallel, and my improvements consist,―
Firstly. In mounting the shaft carrying the revolving stone in
moveable bearings, which bearings are also formed conical, and the
portions of the shaft in contact with the same are tapered, so that as the
bearings wear away they may be moved and the shaft lifted up to its
proper position.
Secondly. In mounting the non-revolving stone upon axes or pivots
placed at the periphery thereof, which axes rest in a ring encircling the

page_text: stone, the axes of which are placed at or about right angles to those of
the stone and rest in bearings within the outer case or cover of the
stones.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Joseph Bedford in the Great Seal Patent Office
on the 1st January 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPH
BEDFORD, of Leeds, in the County of York, Engineer, send grecting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Second day of July, in the year of 1
our Lord One thousand eight hundred and seventy-five, in the thirty-
ninth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Joseph Bedford, Her special licence
that I, the said Joseph Bedford, my executors, administrators, and
assigns, or such others as I, the said Joseph Bedford, 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 MACHINERY OR APPARATUS FOR GRINDING CORN," upon the condition
(amongst others) that I, the said Joseph Bedford, my executors or ad-
ministrators, by an instrument 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 2
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 Joseph Bedford, do hereby declare
the nature of my said Invention, and in what manner the same 3
is to be performed, to be particularly described and ascertained in
and by the following statement and accompanying Sheet of Drawings,
(that is to say):-
This Invention relates to means to be employed for keeping the faces

page_text: Firstly. In mounting the spindle carrying the revolving stone in
moveable bearings, which bearings are also formed conical, and the
portions of the spindle in contact with the same are tapered, so that as
the bearings wear (away they may be moved and the shaft drawn up to
its proper position.
Secondly. In mounting the non-revolving stone upon axes or pivots
placed at the periphery thereof, which axes rest in a ring encircling the
stone, the axes of which are placed at or about right angles to those of
the stone and rest in bearings within the outer case or cover of the
stones.
In order that this Invention may be more fully understood, I herein
give reference to the accompanying Sheet of Drawings illustrative
thereof.
Fig. 1 is a side elevation (partly in section) of grinding mill; and
Fig. 2 end elevation of same. I mount the spindle carrying the.
revolving stone A-in moveable bearings B, C, which are formed conical,
the portion of the spindle in contact therewith being tapered, so that
as the bearings wear away the spindle may be drawn up and tightened
by the set screws d. The non-revolving stone is mounted on axes or
pivots G which rest in a ring H encircling the stone, the ring being
mounted on axcs J resting in slots K in the outer casing L.
I do not confine myself to the precise details of construction herein
shewn, as the same may be varied, but I claim as my Invention,―
Firstly. The use of conical bearings and suitably formed spindle, as
and for the purpose herein shewn and described.
Secondly. The method, herein shewn and described, of mounting the
non-revolving stone, or any mere modification thereof.
r
In witness. whereof, I, the said Joseph Bedford, have hereunto
set my hand and scal, this Twenty-ninth day of December, in
the year of our Lord One thousand eight hundred and seventy-
five.