IMPROVEMENTS IN THE MEANS OR APPARATUS FOR FEEDING THE ROLLERS AND PURIFIERS EMPLOYED IN THE MANUFACTURE OF FLOUR"
Year: 1883

page_text: LETTERS PATENT to Sidney Leetham of the City and County of York for an
Invention of "IMPROVEMENTS IN THE MEANS OR APPARATUS FOR FEEDING THE
ROLLERS AND PURIFIERS EMPLOYED IN THE MANUFACTURE OF FLOUR"
PROVISIONAL SPECIFICATION left by the said Sidney Leetham at the
Office of the Commissioners of Patents on the 13th August 1883.
SIDNEY LEETHAM of the City and County of York.
" IMPROVEMENTS IN THE
MEANS OR APPARATUS FOR FEEDING THE ROLLERS AND PURIFIERS EMPLOYED IN
THE MANUFACTURE OF FLOUR
..
My invention is for the purpose of regulating the feed of the material to the
rollers used in the manufacture of flour also for regulating the feed to the purifiers
used in the same manufacture.
I provide for the above purpose a hopper having a feed roller provided at the
bottom thereof. The hopper is divided at or near the centre by a plate preferably
in a vertical position such plate being suspended on a hinge or swivel, the lower
end thereof being in close contact with the feed roller, so that no material can pass
or escape between it and such roller until the supply or weight of the material
fed is sufficient to raise the plate. The amount of power or weight required to
raise such plate is regulated by a spiral spring or its equivalent attached to the
hopper or any other convenient part of the machine and in connection with the
herein before mentioned swing plate.

page_text: -
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Sidney Leethamn in the Patent Office on the 12th February
1884.
"
SIDNEY LEETHAM of the City and County of York IMPROVEMENTS IN THE
MEANS OR APPARATUS FOR FEEDING THE ROLLERS AND PURIFIERS EMPLOYED IN
THE MANUFACTURE OF FLOUR
"
My Invention is for the purpose of regulating the feed of the material to the
rollers used in the manufacture of flour also for regulating the feed to the purifiers
used in the same manufacture
I provide for the above purpose a hopper having a feed roller provided at the
bottom thereof. The hopper is divided at or near the centre by a plate preferably
in a vertical position such plate being suspended on a hinge or swivel, the lower
end thereof being in close contact with the feed roller so that no material can pass
or escape between it and such roller until the supply or weight of the material fed
is sufficient to raise the plate. The amount of power or weight required to raise
such plate is regulated by a spiral spring or its equivalent attached to the hopper
or any other convenient part of the machine and in connection with the hereinbefore-
mentioned swing plate
And in Order that my Invention may be more readily understood reference is
given to the accompanying drawings and to the letters and marks thereon
DESCRIPTION OF DRAWINGS
Fig 1 is a longitudinal section and Fig 2 a cross section through A B Fig 1
shewing my Improvements
In my Improvements the hopper a and roller b may be of ordinary construction
used in the manufacture of flour
'
The hopper a has provided within it a plate c preferably of metal, though not
necessarily so such plate being suspended on a hinge or swivel d when preferred in
a vertical direction and the lower end e thereof being in close contact with the
feed roller b; but I find in practice that a better effect is produced by having the
plate c slightly inclined from the vertical position as shewn in Fig 2.
The material to be operated upon is passed into the hopper in the direction
shewn by the arrow but cannot escape until sufficient weight of such material has
passed between the side a¹ of the hopper and the hinged plate c to cause the
lower end e¹ of the hinged plate to leave the roller b so that an opening or passage
is at once provided for the material to be conducted by the feed roller to be operated
upon by the machinery
The amount of power or weight required to raise the plate e from the roller b is
regulated by a spiral spring for its equivalent attached to the hopper a at g or to
the framework h (which is passed into the hopper into the position shewn and
on which the plate a is suspeuded) and to the hinged plate c at any convenient
point
Although I have shewn the framework h within the hopper a and prefer using
such framework as a more convenient way of applying my Improvements, this
may be dispensed with and the plate c hinged or suspended in the sides of the
hopper a.
Other parts of the apparatus not specially described may be of ordinary
construction,

page_text: Although I have described my Improvements as applicable for feeding the rollers
and purifiers employed in the manufacture of flour it will be readily understood
that these Improvements may be applied to other machines employed in the
manufacture of flour in which a similar feed is required.
Having now described the nature of my said Invention and shewn by the aid
of drawings how the same may be carried into practice I would have it understood
that I do not limit myself to the precise details or configuration of the parts I have
described and shewn as the same may be varied or modified without in any way
departing from the nature of my said Invention but what I do claim is:
The arrangement construction and application of the plate c suspended or hinged
in the hopper a and parts connected therewith for feeding the rollers and puritiers
employed in the manufacture of flour substantially as herein set forth
In Witness whereof I the said Sidney Leetham have hereunto set my
hand and seal this twenty third day of October in the year of Our Lord one
thousand eight hundred and eighty three.