IMPROVEMENTS IN MEANS FOR SEPARATING FLOUR OR MEAL FROM BRAN Плинен
Year: 1874

page_text: LETTERS PATENT to John Thomas McNally, of Brooklyn, in the
State of New York, United States of America, for the Invention
of "IMPROVEMENTS IN MEANS FOR SEPARATING FLOUR OR MEAL FROM BRAN
Плинен
"
Sealed the 18th September 1874, and dated the 30th April 1874.
PROVISIONAL SPECIFICATION left by the said John Thomas McNally
at the Office of the Commissioners of Patents, with his Petition,
on the 30th April 1874.
I, JOHN THOMAS MCNALLY, of Brooklyn, in the State of New York,
United States of America, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MEANS FOR SEPARATING FLOUR OR MEAL FROM
BRAN AND OTHER FOREIGN Matter," be as follows :-
:-
The fine particles or flour or meal adhering to bran are difficult to
separate; machines for effecting this object are usually called "bran.
dusters."

page_text: My present Invention is for effecting this separation in the most
rapid and perfect manner. A. cylinder is lined partially or entirely
with the "card clothing," similar to that used in carding machines,
and the bran is brought into contact with such points by a revolving
beater or brush within the cylinder. The numerous fine points formed
by the wires of that card clothing act to remove the particles of flour
or meal from the bran or other foreign substances with which it is
commingled, and these card clothing points are sufficiently yielding
to prevent the hull or bran being broken, and such points are very
durable.
The flour is conveyed away by a suction or current of atmospheric air
and the bran is retained by fine wire cloth or similar material and
delivered at the bottom of the machine.
It is generally preferable to alternate the sections of wire cloth and
card clothing in one cylinder, but the card clothing may be in one
cylinder and the wire cloth in a second cylinder, both having revolving
beaters or brushes.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Thomas M'Nally in the Great Seal Patent
Office on the 29th October 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
THOMAS MCNALLY, of Brooklyn, in the State of New York, United States
of America, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirtieth day of April, in the
year of our Lord One thousand eight hundred and seventy-four, in
the thirty-seventh year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said John Thomas McNally,
Her special licence that I, the said John Thomas McNally, my
executors, administrators, and assigns, or such others as I, the said
John Thomas McNally, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time
and at all times thereafter during the term therein expressed, should
and lawfully might make, use, exercise, and vend, within the United
'

page_text: cylinder and the wire cloth in a second cylinder, both having revolving
beaters or brushes.
b
In the Drawing Fig. 1 is a vertical section of the machine employed
for picking, scouring, or cleaning purposes, the same is composed of a
cylinder a lined with the card clothing at, within which is a brush or
blower 6 upon a vertical shaft c driven by competent power applied to
the drum or pulley e, and the material to be operated upon is supplied
through the hopper f, and as it descends it is thrown violently against
the points of the wires forming the card teeth and rubbed by the
action of the brush or blower b, and the material is delivered by the
chute g.
According to the character of the grain, meal, bran, or flour that is to
be operated upon, so the lining of the interior of the cylinder a will be
of card clothing, having coarser or finer wire teeth adapted to the given
use, and the arms of the blower or brush may be armed with the same
kind of card clothing. The material thus treated will not be assorted
unless a screen or screens are provided. In Figs. 2 and 3 the machine
is shown with vertical screens 1, l, in addition to the card clothing
a, as in Fig. 1, such card clothing being omitted where the screens are
applied, and these screens allow the finer particles of flour or meal to
pass through into the case a¹, from which it is delivered by the spout t,
while the bran is retained and delivered by the spout m. The screens
are sometimes circular and the cylinders of card clothing made in the
same shape so as to form alternate cleaning and separating rings one
above the other, as represented in Fig. 4.
By making two machines, one a picker or cleaner, Fig. 1, and the
other a separator or sieve and picker, the operation of cleaning flour
from bran or of separating the refuse is accomplished in the most perfect
manner.
First. The wire card clothing applied to the surface of the picker,
duster, or separator for bran or the products of cereals, in combination
with the revolving fan or brush to loosen the useful from the refuse
portion by contact with the points of the wire card clothing, sub-
stantially as set forth,

page_text: Second. The combination with such wire card clothing and fan or
brush of a screen or screens to separate the materials operated upon,
substantially as specified.
In witness whereof, I, the said John Thomas McNally, have here-
unto set my hand and seal, this Third day of September, A.D.
1871
JOHN T. MCNALLY. (L.S.)
Witnesses,
CHA. H. SMITH, 121, Nassau St., New York.
GEO. T. PINCKNEY,,,
"
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