IMPROVEMENTS IN SCREENS FOR SEPARATING AND CLEANING GRAIN AND ROD ATHED DIIDDOSES PROVISIONAL SPECIFICATION
Year: 1882

page_text: LETTERS PATENT to Henry Septimus Coleman and Alfred George Edwin
Morton, both of Chelmsford in the County of Essex and Thomas Frederick
Stidolph of Woodbridge in the County of Suffolk for an invention of
IMPROVEMENTS IN SCREENS FOR SEPARATING AND CLEANING GRAIN AND
ROD ATHED DIIDDOSES
PROVISIONAL SPECIFICATION left by the said Henry Septimus Coleman,
Alfred Georgo Edwin Morton, and Thomas Frederick Stidolph at the Office
of the Commissioners of Patents on the 29th November 1882.
HENRY SEPTIMUS COLEMAN and ALFRED GEORGE EDWIN MORTON both of
Chelmsford in the County of Essex, and THOMAS FREDERICK STIDOLPH of Wood-
bridge in the County of Suffolk, IMPROVEMENTS IN SCREENS FOR SEPARATING
AND CLEANING GRAIN, AND FOR OTHER PURPOSES."
"
Our Invention relates to improvements in screens having a reciprocal or vibratory
action for separating thin kernels from the best corn and also for cleaning grain
and for other purposes.
"
The Invention consists in constructing such screens with a series of screening
beds or surfaces made of parallel wires of triangular or other suitable section or
otherwise constructed and arranged step wise in a frame which has a considerable
slope whilst the screening surfaces or beds themselves are nearly horizontal or are
at a different angle to the frame in which they are fixed, the screen being mounted
to reciprocate in such a direction that the screening beds or surfaces move each in
its own plane. To this end the screen may be supported by runners on suitable
ways in a fixed frame, and a cleaning brush may be fixed beneath and applied
against the underside of each screening bed to keep it clear. Or instead of brushes
the several screening beds or surfaces may be directly supported on rollers situated
immediately beneath them so that as the screen travels to and fro upon the rollers
they will answer the double purpose of carrying the weight of the screen and of
pressing upwards any matters that may lodge between the wires.
The Invention consists further in intersecting the channels or grooves of the
screening bed with circular openings to allow seeds of the same diameter as the
grain to pass through, while the grain itself being of a greater length than the
diameter of said openings, will slide along the grooves or channels to the delivery
point. In the case of a screening bed-composed of parallel wires of triangular or
other section these circular openings are formed by notching the edges or sides of
the wires at intervals, the notches of adjacent wires corresponding in position so as
together to form the openings desired.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Henry Septimus Coleman, Alfred George Edwin Morton, and
Thomas Frederick Stidolph in the Great Seal Patent Office on the 29th May
1883.
HENRY SEPTIMUS COLEMAN and ALFRED GEORGE EDWIN MORTON both of
Chelmsford in the County of Essex, and THOMAS FREDERICK STIDOLPH of Wood-
bridge in the County of Suffolk "IMPROVEMENTS IN SCREENS FOR SEPARATING
AND CLEANING GRAIN, AND FOR OTHER PURPOSES
"
Our Invention relates to improvements in screens having a reciprocal or vibratory
action for separating thin kernels from the best corn, and also for cleaning grain
and for other purposes.
The Invention consists in constructing such screens with a series of screening
beds or surfaces made of parallel wires of triangular or other suitable section or
otherwise constructed and arranged step wise in a frame which has a considerable
slope, whilst the screening surfaces or beds themselves are nearly horizontal or are
at a different angle to the frame in which they are fixed, the screen being mounted
to reciprocate in such a direction that the screening beds or surfaces move each in
its own plane. To this end the screen may be supported by runners on suitable
ways in a fixed frame, and a cleaning brush may be fixed beneath and applied
against the underside of each screening bed to keep it clear. Or instead of brushes
the several screening beds or surfaces may be directly supported on rollers situated
immediately beneath them, so that as the screen travels to and fro upon the rollers,
they will answer the double purpose of carrying the weight of the screen, and
of pressing upwards any matters that may lodge between the wire.
The Invention consists further in intersecting the channels or grooves of the
screening bed with circular openings to allow seeds of the same diameter as the
grain to pass through, while the grain itself being of a greater length than the
diameter of said openings, will slide along the grooves or channels to the delivery
point. In the case of a screening bed composed of parallel wires of triangular or
other section, these circular openings are formed by notching the edges or sides of
the wires at intervals, the notches of adjacent wires corresponding in position so as
together to form the openings desired

page_text: run, are fixed parallel to the screening beds, so that the beds all move in their own
planes. D (Figure 3) is a brush extending across the whole 'width of the screen,
there being one beneath each screening bed C, the fibres projecting upwards more
or less between the wires, the ends of the brush stock being fixed adjustably to the
frames B. Reciprocating motion is imparted to the frame A by crank and
connecting rod in the usual way.
Referring to Figure 4, the rollers a extend across the whole width of the screen,
one being placed beneath each screening bed to serve as supports and also as clearers
in lieu of brushes. In this case the screen frame A is shaped step wise on its
under edge to correspond to the planes of the screening beds, and the rollers a are
journalled in bearings a¹ fixed on the frame B. The screening beds rest directly
on the rollers a which are padded or covered with indiarubber tube and support
entirely the weight of the screen.
Figure 5 shows part of a screening bed made of wires of triangular or other
suitable section. È are the wires and e are notches of nearly half round form made
in the adjacent edges or sides of the wire and coming opposite one another, so as
with the intervening space to give passage to round seeds without allowing the
grain to pass through. These notches are made in the wire at intervals, the notches
at opposite sides alternating with one another to avoid unduly weakening it. The
notches are drilled after the sections of screening bed have been put together, the
wires being kept in position in a grooved plate specially prepared for the purpose.
Having described the nature of our Invention and the manner of performing the
same, we would observe that we do not claim a step like form of screening surface
per se, but what we do claim as our Invention to be protected by the hereinbefore
in part recited Letters Patent is.
1. A vibrating screen having a screening surface constructed of step like form
and receiving reciprocating motion in such direction that each section of the
screening surface moves in its own plane, substantially as shown and described.
2nd. The construction of reciprocating screens with screening beds or surfaces
arranged step wise and in parallel planes making angles with the general plane
of the frame in which they are fixed, substantially as shown and described.
3rd. The combination with the screen of step like form reciprocating in the
direction described, of stationary brushes fixed beneath the respective sections of
the screen, substantially as and for the purpose specified.
4th. The combination with a reciprocating screen whether of step like or any
other form, of covered or padded rollers mounted beneath the respective sections of
the screen, and upon which the said sections rest and travel, the said rollers serving
the double purpose of supporting the screen and of clearing the interstices of the
screening surfaces, substantially as described and shown in Figure 4 of the drawings.
5th. A screening bed or surface composed of parallel wires having half round
notches made at intervals in their adjacent sides or edges, the notches of adjacent
wires coming opposite one another to form orifices intersecting the grooves or
channels between the wires, substantially as shown and described for the purpose
specified.
In witness whereof we the said Henry Septimus Coleman and Alfred George
Edwin Morton, for ourselves and on behalf of the said Thomas Frederick
HS. COLEMAN
(L.S.)
A. G. E. MORTON. (L.S.)

page_text: B