An Improvement in Cellular Grain Cleaning and Sorting Cylinders.
Year: 1895

page_text: Date of Application, 13th June, 1895-Accepted, 17th Aug., 1895
COMPLETE SPECIFICATION.
An Improvement in Cellular Grain Cleaning and Sorting Cylinders.
CHARLES EDWARD MUMFORD St. Andrews Iron Works Bury St. Edmunds
Suffolk 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 the apparatus for cleaning and sorting grain, wherein a
cylindrical shell having in its inner surface cells or pockets, revolves, while grain
occupying its lower part is tumbled. over and over, and thus the small or broken
grain, seeds or granules, and other impurities become collected in the cells and
being carried up above the level of the grain, fall out of the cells into a tray from
which they are discharged at the end of the machine.
The object of my invention is to prevent as much as possible the retention in the
cells of grain or substances slightly larger than the depth of the cells and which
are not intended to be lifted into the tray. For this purpose I use a novel
arrangement and construction of cleaners M, which in consequence of their shape
& interlocking or overflapping arrangement render it impossible that any of the
holes can escape being swept upon the top edges.
Figure 1 is a a transverse section and Figure 2 is a part longitudinal section of
cellular cylinder of the kind above referred to, with my invention applied to it.
Figure 3 is a section of a part of the circumference of cylinder shewing the cells
which are not necessarily of the shape shewn, but are sometimes indented straight
into the plate, the form of cell used being that most suited to the grain or substance
under treatment.
On this Figure 3 is shewn my invention of cleaner; A is the cylinder which
revolves in the direction of the arrow. The tray D is supported and attached to
the brackets C which is hung from the axis B, in this tray is mounted a worm
conveyor which conveys the smaller matters gathered & discharged from the cells
and lifted into the tray to the end of the said tray and discharges them out at the
end of the cylinders at L. The good grain, that is grain which has not been
gathered up by the indents & lifted into the tray, finally issues by the openings K.
My invention consists of a novel shape of cleaners as follows, that is to say.
A set of cleaners M constructed as follows-
Each alternate cleaner is somewhat longer than the one placed next to it & the
shorter cleaners that is the cleaners of less length from their axis to their cuter
edge are threaded or made to interlock with the longer cleaner placed next to it,
thus when the cylinder is at work both the long cleaner and the short rest the
portion fartherest from the axis on the inner surface of the cylinder and thus act as
cleaners or sweepers, though both cleaners are able to work freely and independent
of each other, all the cleaners being suspended free upon the rod which is attached
to the under part of the tray D.
The whole inner surface of the cylinders from end to end is thus completely
swept by means of these interlocking cleaners which are composed of pieces of rod
twisted into the required shape and threaded on to the rod P as before described.
Having now particularly described & ascertained the nature of my said inven-
tion & in what manner the same is to be performed I declare that what I
claim is
1. In combination with cellular cylinders & grain cleaning & sorting machines

page_text: & their internal tray. The interlocking scrapers M shaped fixed & arranged in the
manner described and arranged & operating substantially as & for the purpose
set forth.
Dated this Twelfth day of June 1895.
CHARLES EDWARD MUMFORD.