An Improved Grain Orushing Mill.
Year: 1889

page_text: Date of Application, 13th June, 1889
Complete Specification Left, 3rd Aug., 1889-Accepted, 12th Oct., 1889
PROVISIONAL SPECIFICATION.
An Improved Grain Orushing Mill.
I, JAMES CURTIS, of Moscow Mills, in the County of Lincoln and State of
Missouri, United States of America, Metal Worker, do hereby declare the nature of
this invention to be as follows :—
This my invention has reference to an improved grain crushing mill, by means
of which the grain is crushed in a more simple and efficacious manner than
heretofore.
.
This said invention consists essentially of a. circular trough, wherein are adapted
to rotate, two crushing-rolls. These said crushing-rolls approximate in shape, that of
a round pyramid, each of which revolves in the trough upon its side, with its vertex
pivoted in a revolving bearing. The base of each pyramid-shaped crushing roll is
formed with a journal, which revolves in a bearing formed in each arm of a voke
which revolves with a central shaft, through which the rotary motion is transmitted
to the crushing rolls. The grain to be crushed is supplied from feed boxes and
hoppers, which are pivotally mounted upon suitable arms provided for that purpose.
Dated this 13th day of June 1889.
HORN & SON,
Applicant's Agents.
COMPLETE
SPECIFICATION.
An Improved Grain Orushing Mill.
I JAMES CURTIS of Moscow Mills, in the county of Lincoln, and State of Missouri,
United States of America, Metal Worker, 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 :-
-
The special object of the invention is to produce a crushing mill in which grain
may be prepared for grinding, so as to allow of a more perfect removal of the bran
therefrom.
Reference is to be had to the accompanying drawings, and to the letters and figures
of reference marked thereon, which form a part of this specification.
Fig. 1 of the drawings is a plan view of my crushing-mill; Fig. 2, a side elevation
of the yoke with the parts attached thereto, the bed-plate and support being in section ;
and Fig. 3, a detail perspective view of the grain-feeder. Fig. 4, is a detail sectional
view of the feeder.
In the drawings, A represents any suitable support, having the central hole, a,
and B. a superposed bed-plate, having the corresponding hole, b. This roller-bed is
circular, made of cast-iron turned smooth on its upper face and surrounded by a
fender, c.
D, is a yoke attached to a vertical shaft, E, having at the lower end a journal, E³,
that turns in the central step-bearing, F, placed across the hole, a. On this yoke and
around the shaft I secure the grain-hopper G, having branch delivery-spouts g g,
discharging into the funnels h h of the grain-feeders H H.
I, I, are diametrically-opposite crushing-rolls journaled in the yoke-bearings d and
the shaft-bearings e, said rolls being trued on their working faces and inclined
gradually from the outer to the inner end.
.
J, is a fixed cross-bar passing through the shaft E, rotating with the same, extending
radially equal distances from the shaft on each side, and supported in bearings h¹ h¹ of

page_text: the scrapers K, attached to the feed-chambers H. The function of the scrapers K is
to push the crushed grain towards the holes a b, through which it descends to
subjacent receptacles and thence to crushing rolls.
L, L, are spring-braces fastened on the cross-bar J, so as to keep the feeders H and
scrapers K in position on the bed B. As the shaft E, is revolved by any suitable
mechanism, the cross bar J carries the feeders H always in advance of and at the same
distance from the rollers I. The feeders H in their movement carry the scrapers Kat
at the rear of the crushing-rolls. The feeders H carry projections 121, which fit
snugly under the rolls at each side, so as to prevent any lateral escapement of the
grain. As these feeders H are carried in advance of the rolls, they feed a thin
layer of grain through the bottom slot, , to the rolls, so that the crushing may
be done thoroughly and with uniformity. Over the rear sides of the rolls I, I
arrange the magnetized scrapers M on elastic arms M', so as to clear the surfaces
of the rolls of any adhering grain and yield to any obstruction.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is:
(1) A grain-crusher feed-box, H, constructed with the hopper h, bearing h¹,
concave projections ³, and opening h³, in combination with a grain-crushing roll, I,
as and for the purpose set forth.
(2) In a grain-crusher, an upright shaft, yoke, crushing-rolls, and arms J, mounted
on said upright shaft, in combination with the spring-braces, L, fastened to the arms J,
and feed boxes pivotally mounted on opposite ends of said arms J, as shown and
described.
Dated this 2nd daw of Anno 1000