Machinery for Grinding Oatmeal.
Year: 1894

page_text: Date of Application, 3rd May, 1894-Accepted, 9th June, 1894
Machinery for Grinding Oatmeal.
I, EDWARD MATHER, of 121 Fountainbridge, Edinburgh, in the County of
Midlothian, North Britain, Engineer do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
This invention relates to Machinery for Grinding Oatmeal and has for its object
to produce all qualities or grades of meal.
Figure 1 of the accompanying drawings is a front elevation of a machine for
grinding oatmeal, constructed in accordance with my said invention.
Figure 2 is a side elevation.
Figure 3 is a plan.
The machine is carried upon a cast iron or other framing or stand A. The
spindle c of the grinding roll C is mounted in adjustable bearings B. The said roll
is preferably of chilled iron or steel having diagonal grooves of saw teeth shape or
other suitable shape. In front of the said roll is mounted the grooved breast
plate D supported on eccentric discs E carried on a spindle F which is mounted in
bearings A' in the framing of the machine. The spindle F with its eccentric discs
is capable of having a motion of partial rotation imparted to it from the band
wheel H through the medium of the worm G' and worm wheel G, when desired to
alter the position of the breast plate relatively with the roll. The lower end d of the
breast plate D is connected to the screw rod J through the medium of the links j so
that the said end of the breast plate, by means of the hand wheel K, may be set at
any required distance to and from the roll by the movement of the said rod J.
When the breast plate is set, the adjusting wheel K may be clamped up or locked
by the handle k. It will thus be seen that there are two motions for adjusting the
face of the breast plate relatively with the roll. The upper or eccentric motion is
such that the concave face of the breast plate, as seen in Figure 2, may be brought
to coincide with the contour of the roll, this being the case when the eccentric
is in the position shown in the said figure. When the eccentric is in an opposite
position, the extremity only of the breast plate approaches the roll.
In the
first case, a finer and more pulverized meal would be produced; in the latter
case the cut of the grain would be sharper, producing less pulverization. It will
thus be seen that a wide range of grade of meal can be produced; and a pointer g,
Figures 1 and 2 with a graduated scale upon the side of the worm wheel G may be
employed to ascertain the range.
The lower or horizontal adjustment of the breast plate is such that the distance
between the face of the breast plate and the face of the roll can be adjusted as
required.
L is the hopper which is provided with a feed roller and feed plate regulated
by the hand wheel and screw arrangement 1. The working parts of the machine
may be enclosed by the casing M.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The machinery for grinding oatmeal, substantially as hereinbefore described
and shown in the accompanying drawings.
2. The combination of the revolving roll and the adjustable breast plate,
substantially as hereinbefore described and shown in the accompanying drawings.

page_text: 3. The eccentric motion of the breast plate, or the mechanical equivalent of the
said motion, substantially as and for the purposes hereinbefore described and shown
in the accompanying drawings.
4. The combined eccentric and reciprocating movement of the breast plate,
substantially as and for the purposes hereinbefore described and shown in the
accompanying drawings.
1
1004
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.