Improvements in Machines for Cleaning Grain and Seeds.
Year: 1894

page_text: Date of Application, 8th Dec.. 1894
Complete Specification Left, 7th Sept., 1895-Accepted, 23rd Nov., 1895
PROVISIONAL SPECIFICATION.
Improvements in Machines for Cleaning Grain and Seeds.
I, JAMES STIRRAT COCHRAN of 29 Newstead Road Liverpool in the County
of Lancaster Engineer, do hereby declare the nature of this invention to be as
follows:-
-
My invention relates to certain improvements in the formation of the brush
surfaces of rotatable cylinders, drums or cones employed in machines for cleaning
grain & seeds which are sometimes formed of bristles or weed and sometimes of
steel wires. My said improvements relate to the construction of wire brushes and
consist in forming the same of wires of different lengths set in pairs in rows in a
strip of suitable flexible material or "backing" which is then wound spirally upon
the drum, cylinder or cone body and instead of attaching the same thereto by nails
or screws I pass the end of the said strips of backing through a notch at the end
of the said drum, cylinder or cone and attach same to a screw suitably placed for
the purpose of drawing in and tightening the said strip upon the cone or drum:
by this method of construction I form upon the surface of the said cylinder, drum
or cone a brush surface having one or more continuous spiral grooves running from
one end to the other.
I employ these brushes in combination with outer casings consisting of, or lined
with a suitable material for retarding the seed or grain being treated, and the
advantage of the formation of the said spiral groove upon the faces of such brushes
being that the flow of the material passing through the machine is thereby
regulated while at the same time the action of such a brush is more thorough than
is the case with brushes of ordinary type.
Dated this 7th day of December 1894.
GEORGE FREDERICK THOMPSON.
Improvements in Machines for Cleaning Grain and Seeds.
1 JAMES STIRRAT COCHRAN of 29 Newstead Road Liverpool in the County
of Lancaster Engineer 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:-
My invention relates to certain improvements in the formation of wire brush
surfaces of rotatable cylinders drums or cones employed in machines for cleaning
grain & seeds generally and consists in forming a spiral or helical groove or grooves
upon the surfaces of such brush cones or drums for the purpose of rendering such
brush surfaces the more efficient while at the same time providing a species of
screw thread for propelling the material or materials treated in a regular and even
stream through the machine.
My said improved brush surface is formed of lengths of steel or other metal wire
first bent into the form of staples having one limb slightly longer than the other,
these staples are set into a strip of suitable flexible material in pairs or sets of three
D

page_text: or more so as to form grooves in the resulting brush surface two or more wires in
width. The strip of brush so formed is then wound spirally or helically upon the
cone or drum and instead of being secured by nails or screws, the end of the said
strip of brush material is passed through a notch at the end of the cone or drum
and attached to a draw-screw for the purpose of tightening up the said strip and for
taking up from time to time the "slack" of the strip or band of brush as it becomes
elongated by use.
Fig. 1 upon the sheet of drawings appended hereunto represents the said wire
staple.
Fig. 2 is a cross section of the said strip of flexible material A with the aforesaid
wire staples B set in.
· Fig. 3 is an end view of a cone or drum shewing the strip of brush A and
draw-screw C.
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 :-
use,
1. In machines for cleaning grain and seeds and for other analagous purposes the
and formation upon the brush surfaces of the cones or drums employed therein,
of one or more continuous spiral or helical grooves of such width and depth as
may be most suitable for the purpose required, substantially as herein described.
2. The formation of a wire brush consisting of staples of metal wire having limbs
of different lengths set into a strip of flexible material, substantially as herein set
forth.
3. The formation of a spirally or helically grooved brush surface upon a cone or
drum by winding and tightening upon same a strip of flexible wire brush material
substantially as herein described.
Dated this 6th day of September 1895.
JAMES STIRRAT COCHRAN.