IMPROVED MACHINERY FOR HULLING GRAIN
Year: 1869

page_text: LETTERS PATENT to Gustav Adolph Buchholz, of Regent's Park, in
the County of Middlesex, Gentleman, for the Invention of "IMPROVED
MACHINERY FOR HULLING GRAIN."
Sealed the 18th January 1870, and dated the 11th November 1869.
PROVISIONAL SPECIFICATION left by the said Gustav Adolph Buchholz
at the Office of the Commissioners of Patents, with his Petition,
on the 11th November 1869.
I, GUSTAV ADOLPH BUCHHOLZ, of Regent's Park, in the County of
Middlesex, Gentleman, do hereby declare the nature of the said Invention
for "IMPROVED MACHINERY FOR HULLING GRAIN," to be as follows:-
This Invention relates to improvements on the horizontal or longi.
tudinal hulling machine for which I obtained Letters Patent, dated
5th January 1865, No. 38, the object being to reduce the cost of its
construction and increase its efficiency.
Instead of making the outer case and the drum which it contains
conical as heretofore I make both cylindrical, and the central shaft
which carries the drum and supports the case in position I mount so
that it may receive any desired inclination towards the delivery end of

page_text: the machine. To this end I mount the bearing for one end of the shaft
in a frame fitted with trunnions which are free to rock in a fixed frame
or standard, and the bearing for the other end of the shaft I mount
in a vertical frame which is capable of receiving a vertical adjustment
through a regulating screw working in a fixed part of the framing. The
cylindrical case I cast by preference in flanged sections and bolt the
same together. Each of these sections will be cast with two, three, or
more rectangular openings in their sides to receive either panels of wire
gauze or perforated metal for admitting air into and allowing of the
discharge of bran from the case; or the openings may be filled with steel
blades fitted according to my Patent, dated August 12th 1868, No. 2526,
or they may receive alternately (in the circumference of the case) ven-
tilating surfaces and blades. Between these panels in the inner periphery
of the case I fit ribs or blocks of vulcanized india-rubber or its equi-
valent as friction surfaces, the protrusion of which I regulate by means
of radial screws, access to the heads of which is obtained outside the
case. The drum is cast also in sections, and with annular ribs on its
periphery to receive steel blades with which it is covered from end to
end. These sections are strung on the central shaft and keyed thereto,
and they are connected together by screwed rods running through all
the sections. One end of the shaft is fitted with a driving pulley through
which a rapid rotary motion is imparted to the drum, and a slow rotary
motion in the opposite direction is given to the case. The pulley for
driving the case is carried by an end plate made fast to the case. This
end plate is cast with a hollow boss through which the feed is delivered
to the case. A fixed central feed plate is fitted to this boss, and through
an opening in this plate the feed is delivered to the machine from a
delivery pipe or hopper. When the machine is in action the delivery
end (that opposite to the feed end) is depressed and the grain will then
take a helical course through the machine. The greater the depression
of the central shaft the quicker will be the delivery. When therefore
the action of the machine upon the grain is required to be increased the
shaft will have to be brought nearer to the horizontal, and vice versa..
The machine may be run until the efficiency of the blades has appre-
ciably deteriorated by wear, when they will require to be changed.
Slight wear will show no depreciation, and considerable wear may be
met by increasing the supply of grain.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent;
filed by the said Gustav Adolph Buchholz in the Great Seal Patent
Office on the 11th May 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GUSTAV
ADOLPH BUCHHOLZ, of Regent's Park, in the County of Middlesex;
Gentleman, send greeting.
-3
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eleventh day of November, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Gustav Adolph Buchholz, Her special licence
that I, the said Gustav Adolph Buchholz, my executors, administrators,
and assigns, or such others as I, the said Gustav Adolph Buchholz, 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 Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVED MACHINERY
FOR HULLING GRAIN," upon the condition (amongst others) that I, the said
Gustav Adolph Buchholz, my executors or administrators, by an instru-
ment in writing under my, or their, or one of their hands and seals,
should particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the same
to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Gustav Adolph Buchholz, do hereby,
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in
and by the following statement, reference being had to the Drawings,
hereunto annexed, and to the letters and figures marked thereon (that
is to say):-
This Invention relates to improvements on the horizontal or longi.
tudinal hulling machine for which I obtained Letters Patent, dated Fifth
January One thousand eight hundred and sixty-five, No. 38, the object
being to reduce the cost of its construction and increase its efficiency....:
Instead of making the outer case and the drum which it contains
conical as heretofore I make both cylindrical, and the central shaft

page_text: which carries the drum and supports the case in position I mount so
that it may receive any desired inclination towards the delivery end of
the machine.
In the accompanying Drawings Fig. I shews my improved machine
in side elevation; Fig. 2 is a longitudinal section of the working parts of
the same; Fig. 3 is a transverse section of the machine taken in the
line 1, 2, of Fig. 1; and Fig. 4 is an elevation of the delivery end of the
machine..
A, A, are standards braced together at top and bottom and forming a
fixed frame within which is mounted a moveable frame B, B, carrying a
cylinder C and the mechanism connected therewith. The frame B is
fitted with trunnions at one end to allow it to rock in the fixed frame A,
the other end of the frame B is capable of receiving a vertical adjust-
ment through a regulating screw attached thereto and pendent from
the fixed framing. The cylindrical case I cast by preference in flanged
sections, as shewn in Fig. 2, and I connect the same together by means
of bolts and nuts. Each of these sections will be cast with two, three,
or more rectangular openings to receive at their inner peripheries either
panels of wire gauze or perforated metal for admitting air into and
allowing of the discharge of bran from the case; or the openings may
be filled with steel blades fitted according to my Patent, dated August.
Twelfth, One thousand eight hundred and sixty-eight, No. 2526; or they
may receive alternately ventilating surfaces and blades. Between these
panels and the inner periphery of the case I fit ribs or blocks of vul-
canized india-rubber d, d, or its equivalent as friction surfaces, the
protrusion of which I regulate by means of radial screws e, e, access to
the heads of the screws being obtained outside the case. Within this
cylinder C I mount a cylindrical drum D which is made fast to a longi-
tudinal shaft E having its bearings in the adjustable frame B. This
drum D is east in sections and with annular rebated ribs on its periphery
to receive steel blades with which it is covered from end to end. These
sections are strung on the central shaft and keyed thereto, and they are
connected together by screwed tie rods f,f, running through all the
sections. One end of the shaft is fitted with a driving pulley F through
which a rapid rotary motion is imparted to the drum by means of a
band from any prime mover. A slow rotary motion in the opposite
direction is also given to the case to increase the efficiency of the
machine. The pulley for driving the case is shewn at G, and it is carried

page_text: by an end plate G' made fast to the case. This end plate is cast with a
hollow boss through which the feed is delivered to the case. A fixed
central feed plate g is fitted to this boss, and through an opening in this
plate the feed is delivered to the machine from a delivery pipe or hopper
I. When the machine is in action the delivery end (that opposite to
the feed end) is depressed by turning the hand wheel H, which is fitted
to the vertical screw h by which the frame B is suspended at its adjust-
able end; on the depression of the central shaft the grain will then
take a helical course through the machine; the greater the depression
of the central shaft the quicker will be the delivery. When therefore
the action of the machine upon the grain is required to be increased the
shaft will have to be brought nearer to the horizontal, and vice versa.
The machine may be run until the efficiency of the blades has appre-
ciably deteriorated by wear, when they will require to be changed. Slight
wear will shew no depreciation, and considerable wear may be met by
increasing the supply of grain.
Having now set forth the nature of my Invention of improved
machinery for hulling grain, and explained the manner of carrying
the same into effect, I wish it to be understood that under the above in
part recited Letters Patent I claim,―
Firstly. Making the case and drum of hulling machines furnished
with my improved blades cylindrical, and mounting the same in an
adjustable horizontal frame, in the manner and for the purpose above
set forth.
Secondly. The application to the cylindrical case of adjustable friction
surfaces, as above described.
In witness whereof, I, the said Gustav Adolph Buchholz, have here-
unto set my hand and seal, the Tenth day of May, in the year of
our Lord One thousand eight hundred and seventy.
G. A. BUCHHOLZ. (L.S.)