IM- PROVEMENTS IN WHEAT CLEANING MACHINERY, ALSO APPLICABLE TO THE CLEANING OF OTHER GRAIN
Year: 1877

page_text: LETTERS PATENT to James Robinson, of Carlisle, for the Invention of " IM-
PROVEMENTS IN WHEAT CLEANING MACHINERY, ALSO APPLICABLE TO THE
CLEANING OF OTHER GRAIN." A communication from abroad by Mads Petersen,
of Hobro, Denmark.
PROVISIONAL SPECIFICATION left by the said James Robinson at the Office
of the Commissioners of Patents on the 13th February 1877.
JAMES ROBINSON, of Carlisle. "IMPROVEMENTS IN WHEAT CLEANING MACHINERY,
ALSO APPLICABLE TO THE CLEANING OF OTHER GRAIN." A communication from
abroad by Mads Petersen, of Hobro, Denmark.
This Invention relates to apparatus for cleaning or scouring wheat, barley, and
other grain, the object being to perform this operation more effectually, and with
simple and durable machinery.
A wooden framing is constructed within suitable brick or stone foundation work,
the upper portion of said framing being formed as a chamber, and the lower portion
of uprights and cross piece, carrying the footstep of a central vertical shaft which
runs through stuffing boxes in the upper framework, and carries a scouring stone,.
which works within a boxing constructed in the chamber formed by the upper
portion of the framing. The scouring stone very nearly fits the boxing within
which it works, and has fixed upon its under side ribs or feathers, so placed as in
working to drive the scoured grain outward from the centre of the stone to its
periphery, and the sides of the boxing is formed of perforated and pierced or holed
plates, the under side of the boxing being also formed of perforated metal plates,
and the upper side is provided with a suitable close cover. Above the box and leading
thereto is fixed a hopper for supplying the grain to be scoured to the scouring stone,
on to which it is discharged and scoured between the said stone and sides of the
boxing, and after being sufficiently treated it escapes through openings in the sides
of the boxing, and is conveyed directly or by a shoot to sacks or other receptacles.
The dust and light particles scoured or removed from the grain escapes through the

page_text: perforated under side of the boxing or its perforated side plates, assisted by the
current of air or "wind" caused by the rotation of the stone.
The central vertical shaft has keyed thereto at its upper end a driving pulley for
a band, or may be driven in any well known or desired manner.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Robinson in the Great Seal Patent Office on the 13th August
1877.
1.
JAMES ROBINSON, of Carlisle. "IMPROVEMENTS IN WHEAT CLEANING MACHINERY,
ALSO APPLICABLE TO THE CLEANING OF OTHER GRAIN." A communication from
abroad by Mads Peterson, of Hobro, Denmark.
This Invention relates to apparatus for cleaning or scouring wheat, barley, and
other grain, the object being to perform this operation. more effectually, and with
simple and durable machinery.
A wooden framing is constructed within suitable brick or stone foundation work,
the upper portion of said framing being formed, as a chamber, and the lower portion
of uprights and cross piece, carrying the footstep of a central vertical shaft, which
runs through stuffing boxes in the upper framework, and carries a scouring stone
which works within a boxing constructed in the chamber formed by the upper
portion of the framing.
And in order that the said Invention may be fully understood, I shall now
proceed more particularly to describe the same, and for that purpose shall refer to
the several Figures on the accompanying Drawing, the same letters of reference
indicating corresponding parts in all the Figures.
Fig. 1 is a sectional elevation of the improved wheat and grain cleaning machine;
Fig. 2, a sectional plan showing the scouring-stone.and boxing of the same; Fig. 3,
a plan of the under side of the scouring stone; and Fig. 4, a corresponding view of
the under side of the boxing containing the scouring stone.
.
A, A¹, represents a wooden framing built within, and resting upon, the stone (or
brick) foundation B; the upper portion A is formed as a chamber, and the lower
portion A¹ of uprights and a cross piece A², carrying the footstep C of a central
vertical shaft D which runs through a stuffing, box fixed on the upper portion A
of the framework, and carrys near its lower end a scouring stone F, which revolves
within a boxing G mounted on the floor of the upper portion A of the framework,
and very nearly fits the interior of the said boxing, as shewn. The surrounding
side or periphery of the boxing G, as also its under side, are formed of perforated
metal or other plates a, b (Figs. 1 and 4), whilst its upper side or top is made with
a close cover c. The scouring stone F has fixed upon its under side ribs or
feathers d of spring steel or other material (Fig. 3), so placed that when the stone
revolves a constant draught is thereby maintained, and the scoured grain is driven
outwards from the centre of the stone to its periphery. Adjoining the said ribs or
feathers furrows or grooves are formed in the stone to assist in causing draught.
Above and leading to the boxing G is fixed a hopper H for supplying the grain to
be scoured to the scouring stone F on which it falls, and is scoured between it and
the surrounding side or periphery and the under side of the boxing G. After being
sufficiently treated in this manner it escapes through an opening or openings e in
the surrounding side of the boxing G, whence it is conveyed directly or by a shoot
into sacks or other receptacles. The dust and light particles scoured or removed
from the grain escape through the perforated under side of the boxing G, and
through its perforated surrounding side plates, assisted by the current of air or wind
caused by the rotation of the stone.
The central vertical shaft D is driven or caused to revolve by a pulley I keyed at
its upper end, as shewn, and driven by belt, or by means of bevil gear underneath

page_text: the scouring stone F; or the shaft & may be driven in any other desirable or well
known manner. A riddle or sieve is placed on the top of the hopper H to prevent
foreign matter from entering with the grain.
Having now described the nature of the said Invention, and the manner in which
the same is or may be used or carried into effect, I would observe in conclusion that
what I claim as the Invention secured to me by the herein-before in part recited
Letters Patent is, the improvements in wheat and grain cleaning machines, sub-
stantially as herein-before described and illustrated by the accompanying Drawing.
In witness whereof, I, the said James Robinson, have hereunto set my hand
and seal, this Seventh day of August, in the year of our Lord One thousand
eight hundred and seventy-seven.
JAMES ROBINSON. (L.S.)