IMPROVEMENTS IN APPARATUS FOR GRINDING CORN OR GRAIN AND FOR SIFTING AND SEPARATING THE MEAL
Year: 1884

page_text: WO PATRICK GILLEN, Millwright, and JOHN WHITTIER THROOP, Mill Furnisher,
both of Corn Exchange Chambers, London, in the County of Middlesex, do hereby
declare the nature of our invention for "IMPROVEMENTS IN APPARATUS FOR
GRINDING CORN OR GRAIN AND FOR SIFTING AND SEPARATING THE MEAL to be
as follows:-
Our Invention relates to the combination of an improved meal separating and
sifting apparatus with a Roller Mill, or other grinding apparatus, to an improved
arrangement of the rolls in relation to the sifting apparatus, and to an improvement
in the driving gear.
In constructing a combined reduction roller mill we propose to place the rolls
outside of the frame enclosing the sifting and separating apparatus, supporting these
rolls upon brackets attached to the said frame, or in any convenient manner.
Within the frame we fit a cylinder or Reel of Silk, wire gauze, or other suitable
screening material. The end of this reel furthest from the first pair of rolls we furnish
with what we term an Elevator, which may be a circle or ring of any suitable
material having formed in or attached to it recesses, cups, or concave compartments,
extending beyond the diameter of the Reel, with which it will revolve; the open
sides or faces of these recesses, cups or concave compartments revolving almost in
contact with the periphery of a fixed disc which will keep the contents of these
compartments from escaping until required.
A suitable conduit or hopper will lead from the first pair of Rolls into the Reel,
and another conduit at the opposite end of the Reel will lead into the second pair
of Rolls at its other end, placed outside the frame and at about the same height as
the first pair.
In this combined Roller Mill and sifting and separating apparatus we propose to
transmit power to the Rolls by belting from two countershafts at the base, having
spur wheels giving them differential speed, and only one first motion pulley on
machine, which may be driven from any convenient source in a mill.
The meal passing from the first pair of Rolls into the Reel there undergoes a first
sifting and Separation, the fine flour and middlings passing through the silk and
ID 31

page_text: the remainder of the meal travelling to the opposite end of the Reel, where it falls
into the recesses or receivers of our Elevator, which carries it up and delivers it
into the conduit leading to the second pair of Rolls, and so on from one set of
Rolls and Reels to another throughout the Mill.
By the use of our elevator the height of a combined Roller Mill having Silk
dressing apparatus may be greatly decreased, and our method of carrying the Rolls
outside of the frame of the sifting and separating apparatus renders them easy of
access and of removal when required.
We have described our Invention as applied to a Roller Mill, but with slight
modifications our improved sifting and separating apparatus may be applied to
other Mills for grinding grain.

page_text: wire-gauze or other dresser and the remainder of the meal traveling to the opposite
end of the reel where it passes into the collector G¹ of the fixed disc G from whence
it falls into the cups F of the elevator E, which carries it up and deliveres it
through the opening G into the hopper L from whence it passes into the second
pair of rolls B and so on from one set of Rolls and Reels to another throughout
the Mill.
We are aware that prior to our Invention Elevators have been placed at the end
of sifting or separating Reels operating in conjunction with Roller Mills.
We therefore do not claim such a combination broadly but by the use of our
Elevator the height of a combined Roller Mill having silk or other dressing
apparatus, may be greatly decreased and our method of carrying the Rolls outside
of the frame of the sifting or separating apparatus renders them easy of access and
of removal when required.
Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed We declare that what
We claim is -
J
1. A combined Reduction Roller Mill or apparatus for grinding corn or grain and
separating the meal, constructed combined, and arranged to operate substantially
as herein before described and shown on the accompanying Drawings.
2. The circular revolving Elevator E provided, with cups F, opening directly
towards the axis: of said Elevator, in combination with the fixed disc G, its rim
covering the mouths of said cups and having openings at bottom and top through
which the material to be elevated passes respectively, into and out of said cups.
3. The two pairs of Rollers A and B in combination with an interposed dresser,
a circular elevator at its lower end, and a driving shaft common to both substantially
as described.
4. The two pairs of Rollers A and B, an interposed dresser, and a circular
elevator at its lower end upon its shaft of rotation, in combination with a worm K
for conveying the grain within the end of said dresser.
Dated this twenty ninth day of October 1801.
For the Applicants,
W. E. GEDGE,
Agent.