A NEW OR IMPROVED MODE OF CLEANING GRAIN, AND IN THE APPARATUS EMPLOYED THEREFOR.
Year: 1878

page_text: LETTERS PATENT to Gottlob Schaeffer, of Goeppingen, Wurtemberg, Germany,
for the Invention of "A NEW OR IMPROVED MODE OF CLEANING GRAIN,
AND IN THE APPARATUS EMPLOYED THEREFOR.'
"
PROVISIONAL SPECIFICATION left by the said Gottlob Schaeffer at the
Office of the Commissioners of Patents on the 11th May 1878.
"A NEW OR
GOTTLOB SCHAEFFER, of Goeppingen, Wurtemberg, Germany.
IMPROVED MODE OF CLEANING GRAIN, AND IN THE APPARATUS EMPLOYED
THEREFOR."
This Invention relates to a new or improved method of removing screws, wiro
tacks, shoe pins, or other pieces of iron which find their way amongst corn or other
grain during the process of thrashing or other treatment, and which it is impossible
to remove either by sieves or winnowing machines, the consequence being that mill
rolls and millstones are often damaged thereby.
The Invention consists in removing these pieces of iron from the corn or grain by
the attractive force of magnetism applied in the form of artificial magnets or by
galvanic battery.
In carrying out this Invention according to one plan two (or more) rows of steel
magnets are arranged in pairs extending across and between the two end cheeks or
brackets of a cast-iron frame, one row of these magnets being composed of south
poles and the opposite row of north poles; their lower ends are connected to a cast-
iron tie bar extending between the said end brackets so as in the aggregate to form
one magnet. Their poles or opposite ends project through a sloping board or plank,
and the corn or other grain being caused to pass slowly down this sloping board or
plank and over the projecting ends or poles of the magnets, the pieces of iron are

page_text: seized by the latter, and by stopping the supply of corn can be readily removed
therefrom; or the magnets may be arranged to hang over the sloping board or
plank, or in any other manner that may be found most suitable.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Gottlob Schaeffer in the Great Seal Patent Office on the 11th
November 1878.
GOTTLOB SCHAEFFER, of Goeppingen, Wurtemburg, Germany.
"A NEW OR
IMPROVED MODE OF CLEANING GRAIN, AND IN THE APPARATUS EMPLOYED
THEREFOR."
This Invention relates to a new or improved method of removing screws, wire
tacks, shoe pins, or other pieces of iron which find their way amongst corn or other
grain during the process of thrashing or other treatment, and which it is impossible
to remove either by sieves or winnowing machines, the consequence being that mill
rolls and millstones are often damaged thereby.
The Invention consists in removing these pieces of iron from the corn or grain by
the attractive force of magnetism applied either in the form of artificial magnets or
by galvanic battery.
And in order that my said Invention may be well understood I shall now pro-
ceed more particularly to describe the same, and for that purpose shall refer to the
Figures on the accompanying Drawing, liko letters of reference indicating corre-
sponding parts in all the Figures.
Figure 1 is a front view of one form of apparatus employed for carrying out the
Invention; Fig. 2, a plan thereof; Fig. 3, a section on line A, B, in Fig. 1 ; Fig. 4,
a section on line C, D, in Fig. 3; and Figs. 5, 6, and 7, detail views of parts of
Fig. 1.
Extending across between the two end cheeks or brackets a, a, of a cast-iron
frame arc arranged in pairs parallel rows of steel magnets b, b, c, c, one row of
which b, b, are composed of south poles, and the other row c, c, of north poles. The
lower ends of these magnets are screwed or otherwise connected to a tie bar d of
cast iron or other suitable material extending between the said end cheeks or
brackets so as in the aggregate to form one magnet. Their poles or opposite ends
project through a sloping board or plank f down which the corn or grain is caused
slowly to pass, and in so doing passes over the projecting ends or poles of the
magnets b, b, c, c, which seize upon or attract the pieces of iron contained in the
grain, and which can then be readily removed by stopping the supply of the corn or
grain; or the magnets b, b, c, c, may be arranged to hang over the sloping board or
plank f, or in any other manner that may be found most advantageous.
Having now described and particularly ascertained the nature of my said
Invention and the manner in which the same is or may be used or carried into

page_text: effect, I would observe in conclusion that what I consider novel and original, and
thereform claim as my Invention secured to me by the herein-before in part recited
Letters Patent is, removing pieces of iron from corn or other grain by the attractive
force of magnetism employed in combination with apparatus, substantially as herein-
before described, and illustrated by the accompanying Drawing.
In witness whereof, I, the said Gottlob Schaeffer, have hereunto set my
hand and seal, the First day of November, in the year of our Lord One
thousand eight hundred and seventy-eight.