Sorting Grain, Seeds, and other Substances.
Year: 1885

page_text: Sorting Grain, Seeds, and other Substances.
We, HARRY SHIELD and WILLIAM NORRIS CROCKETT, of Nottingham in the
Town and County of Nottingham, Screen Manufacturers do hereby declare the
nature of our invention for IMPROVEMENTS IN ADJUSTABLE SCREENS FOR
SCREENING, SIFTING AND SORTING GRAIN, SEEDS AND OTHER SUBSTANCES to be
as follows:
The special object of this Invention is to make the construction of adjustable
Flat Screens simple and effective with great accuracy of adjustment from the finest
to the coarsest mesh.
The principle feature of our Invention is the form or shape of the bars, rods, or
wires forming the screening surface which are suitably corrugated for the purposes
of adjustment and mounted on a suitable number of bearings having slots or
recesses to receive them, and which are held in the said slots or recesses by bars
being placed on the top of said bearings and held in position by a suitable number
of rivets passing through them and also through the fixed half of the bars, rods, or
wires and also through the bearings: Other suitable means of fastening may be
employed. Every other bar, rod or wire is held fast in its place and the alternate
ones are attached by rivetting or otherwise to a bar which is drawn forward by a
screw and thus causing the moveable half of the bars, rods, or wires to pass down
between the fixed half, which movement alters the mesh or gauge of the Screen, at
the same time ensuring the greatest accuracy of gauge from the finest to the
coarsest mesh..
Screens of this construction may be made any length or width and are cleaned
by washers in the usual way."
We may also make adjustable Rotary Screen's with the bars, rods, or wires
corrugated in a similar manner.
20
1

page_text: Sorting Grain, Seeds, and other Substances.
We HARRY SHIELD and WILLIAM NORRIS CROCKETT of Nottingham in the
Town and County of Nottingham, Screen Manufacturers do hereby declare the
nature of our invention for IMPROVEMENTS IN ADJUSTABLE SCREENS FOR
SCREENING, SIFTING AND SORTING GRAIN, SEEDS AND OTHER SUBSTANCES and in
what manner the same is to be performed, to be particularly described and
ascortained in and by the following statement:-
The special object of this invention is to make the construction of adjustable
Flat Screens simple and effective with great accuracy of adjustment from the
finest to the coarsest mesh.
The principle feature of our invention is the form or shape of the bars, rods or
wires forming the screening surface which are suitably corrugated for the purposes
of adjustment and mounted on a suitable number of bearings, having slots or
recesses to receive them and which are held in the said slots or recesses by bars
being placed on the top of said bearings and held in position by a suitable number
of rivets passing through them and also through the fixed half of the bars, rods.or
wires and also through the bearings. (Other suitable means for fastening may be
employed). Every other bar, rod or wire is held fast in its place and the alternate
ones are attached by rivetting or otherwise to a bar which is drawn forward by a
screw and thus causing the moveable half of the bars, rods or wires to pass down
between the fixed half which movement alters the mesh or gauge of the Screen at
the same time ensuring the greatest accuracy of gauge from the finest to the
coarsest mesh.
Screens of this construction may be made any length or width and are cleaned
by washers in the usual way.
We may also make adjustable rotary Screens with the bars, rods or wires
-corrugated in a similar manner.
Having thus far described the nature of our Invention, we will now proceed
aided by the accompanying drawings, to further and particularly describe and
ascertain same,-that is to say,

page_text: Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed, we declare that
what we claim is
1. The corrugating of the bars, rods or wires into a suitable shape for the
purposes of adjustment as substantially set forth.
.
2. Alternate fast and loose corrugated bars, rods or wires working for he
purposes of adjustment between slotted bearings or guide bars as substantially as
set forth.
3. The general construction of the Screen as substantially set forth