IMPROVEMENTS IN THE CONSTRUCTION OF AMERICAN CORN MILLS
Year: 1884

page_text: I EMIL CAPITAINE of 89 Chancery Lane in the County of Middlesex, Engineer
of the firm of Capitaine & von Hertling, do hereby declare the nature of the said
invention for IMPROVEMENTS IN THE CONSTRUCTION OF AMERICAN CORN MILLS to
be as follows:-
My invention relates chiefly to a new arrangement for the regulation of the two
cylinders in American Corn mills and secondly to an improved lubricator. This
new arrangement may be applied on mills with two cylinders the one being upon
another or the one being beside the other.
1. The one cylinder upon another. The lower parts of the bearing-boxes of the
lower cylinder or roller are radially on both sides connected with the frame of the
mill by screws giving the necessary support to this cylinder as the latter is
standing on them. The lower parts of the bearing-boxes of the other cylinder are
mounted on levers forming one part with these boxes, which levers have their
fulcrum underneath but before the boxes in consequence of which the cylinders
may move freely up and down.
On the other end of the levers are fixed vertical spiral-springs made of flat steel,
which springs may be voluntarily regulated on a vertical axis, the latter having a
handwheel on the top end and a worm on the lower part.
In the extremities of the said levers rotate worm wheels with inside thread
moving freely up and down on the worm of the said axis by turning the
handwheels. As the wheels rotate to the right or left the levers must necessarily
receive an upward or downward motion and hereby the pressure on the rollers of
the mill will be increased to almost any extent independent of the pressure
produced by the upper cylinder. This pressure being necessarily transfered to the
pivots, the latter are provided with rotating discs which run with their lower parts
in oil. The oil adheres to the disc and transfers it to the pivots. A continuous
circulation of oil is caused by this arrangement, and the heating of the bearings
entirely prevented.
2. The one cylinder beside the other. Here the bearing-boxes of the foremost
cylinder is stationary mounted in the frame of the mill. The other cylinder is free

page_text: to move in the direction of this stationary cylinder; the bearing-boxes being in
connection with levers on which a splint can be moved by means of a worm on the
axis of a worm wheel which may be rotated by a suitable handwheel. By this
cylinder the required pressure is received and it has less velocity than the
stationary. As soon as the grain comes between the two rollers the moveable
cylinder is pressed downwards with a force corresponding to the difference of the
velocities.
3. The regulating gear is equal in construction to both machines. The axis the
worm of which moves the worm wheels on the axis of the springs in the first
construction (or the worm wheels of the splint-axis of the second) has on the
one end a handwheel and its worm on a wheel conically mounted while the
wormwheel of the other end is secured by a splint to this axis.
If the top-screw in the conical end of the axis is disengaged or forced against
the cone the wheel of the spring-axis (or splint-axis) on this end will revolve
more or less and the bearing of the cylinder is lifted or let down on this side as
the case may be.
By this means the two rollers will always be brought in a strictly parallel
position to each other.

page_text: COMPLETE
SPECIFICATION.
I, EMIL CAPITAINE of 89 Chancery Lane in the County of Middlesex, Engineer,
do hereby declare the nature of the said invention for "IMPROVEMENTS IN THE
CONSTRUCTION OF AMERICAN CORN MILLS" a communication to me from abroad
by T. M. Simon of Strasburg in the Alsace, in the German Empire, and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
These improvements relate to arrangements for regulating the relative position
of the two cylinders or rolls in American Corn mills, and to an improved method
of lubricating the bearings of the same. They may be applied to mills of which
the rolls are mounted one above the other or to mills in which the rolls are
mounted side by side.
Referring to the accompanying sheet of illustrative drawings:
:-
Figs 1 and 2 shew a corn mill with one roll above another, to which these
improvements are applied, Fig 1 being a front elevation partly in section and with
a portion of the outer casing removed, and Fig 2 an end elevation with the driving
pulley removed.
Figs 3 and 4 are similar views shewing a corn mill with one roll by the side of
another.
Fig 5 is a detail view of a portion of the regulating mechanism drawn to
a larger scale.
In the whole of the aforesaid figures, similar letters of reference indicate like
parts.
a is the outer casing; a¹ the hopper; b stationary roll; c adjustable roll;
d bottom bearing boxes; e top bearing boxes; f rotating lubricating discs; g friction
levers rigidly connected to or in one piece with the lower part of the upper bearing.
boxes; g levers or arms similarly connected, (Figs 3 and 4); % fulcra of the
levers g and gl; i spiral plate springs for communicating the desired pressure to
the peripheries of the rolls; screw threaded rods for regulating the force of the
springs i; wedge formed part for raising and lowering the adjustable roll c;
Z band wheel working on the rod k; m worm wheels provided with an inner thread
for taking on to the screw thread of the rods ; n hand wheel for operating
worms o; p screw and nut for fixing the hand wheel on the shaft q.
Referring to Figs 1 and 2:-
I
The bearing boxes d of the bottom roll bare supported at their lower part by
screws which pass radially through a part projecting from the casing a.
The
bearing boxes e of the top roll care at their lower part rigidly mounted or in one
piece with the levers 7 (one on each side of the mill) which have their fulcra
underneath but away from the vertical line of the bearing boxes, thus allowing of
the free up and down movement of the roll c. On the outer ends of the levers g
are mounted the vertical spiral plate springs i made of flat steel, which springs
may be regulated as desired along their vertical axis by means of the hand wheels b
(only one of which is shown in the drawing) and screws and worm wheels m
and o (Fig 5) the levers being tightened up between the worm wheels m and

page_text: springs (one at each side of the mill) The worm wheels m are operated by the
hand wheel n in conjunction with the screws o. When the worm wheels m are
rotate to the right or left the levers g (one on each side of the mill) necessarily
receive an upward or downward motion the pressure between the two rolls being
thereby increased or diminished to almost any extent independently of the pressure
produced by the weight of the top roll. Such pressure is obviously transferred to
the roll shafts on which are fixed lubricating discs f running with their lower part
in oil. The oil adheres to the discs and is by them distributed on to the bearings,
thus provision is made for a continuous circulation of the oil and heating of the
bearings prevented.
Referring to Figs 3 and 4:-b is the stationary roll and c the adjustable roll the
bearings boxes e¹ (on both sides of the mill) of this latter being connected to the
oscillating levers or arms g¹ which have their fulcra at h. The adjustable roller c
is displaced by means of the wedge pieces sliding on a projection on the inain
frame alongside lever g an engaging underneath the bearing boxes c¹ on both
sides of the mill, which wedge pieces are moved to and fro by means of screw and
worm wheel mechanism similar to that already described, the adjustable roll c
moving with the levers g' in the arc of a circle on the fulcra h. The adjustable
roll runs at a less velocity than the stationary roll from which peculiarity
advantage is derived, as when the grain to be ground falls down from the hopper
between the two rolls the adjustable roll is pressed downwards with a force
corresponding to the difference of the velocities. In this arrangement the springs i
are dispensed with.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
1. In mills of the kind described with reference to Figs 1 and 2 of the drawings
-the-arrangement-of-two-levers-g-fixed-to-or-in-one-piece-with-the-bearing-boxes-e-
on each side of the mill, having their fulcra in close proximity to the vertical
centre line of the rolls, in combination with the springs i and the regulating
mechanism which allows of the adjustable cylinder being adjusted at both ends
simultaneously or one end at a time substantially as described and illustrated.
2. In corn mills of the kind described with reference to Figs 3 and 4 of the
drawings the arrangement of oscillating levers gl fixed to or in one piece with the
bearing boxes c¹ on each side of the mill in combination with the regulating
mechanism substantially as described and illustrated.
3. The method of lubricating the roll shafts by means of lubricating discs
substantially as described and illustrated.
Dated this 3rd day of January 1885.