A DISMEMBRATOR FOR FLOUR MILLS
Year: 1877

page_text: LETTERS PATENT to Carl Pieper, of Dresden and Berlin, for the Invention of
"A DISMEMBRATOR FOR FLOUR MILLS." A communication from August Nagel
and Reinhold Kaemp; of Hamburg, Germany.
Sealed the 24th April 1878, and dated the 5th November 1877.
PROVISIONAL SPECIFICATION left by the said Carl Pieper at the Office of the
Commissioners of Patents on the 5th November 1877.
CARL PIEPER, of Dresden and Berlin. "A DISMEMBRATOR FOR FLOUR MILLS." A
communication from August Nagel and Reinhold Kaemp, of Hamburg, Germany.
This Invention relates to a dismembrating apparatus, the object of which is to
separate from each other the particles of the ground products delivered by roller mills.
The same consists of two round and flat disks having concentric rows of short
studs or pins on one of their surfaces in a similar style as in the well-known
disintegrating mills. One of these disks is annular and is fixed to the inside of a
casing. The other disk is keyed on a shaft, rotating at its ends in bearings. The
studs on the face of the revolving disk are arranged to pass between and close to
the studs of the fixed disk. The bushes or brasses of the said bearings are made
very long, so as to present a large bearing surface and to prevent heating, and they
are turned spherical in the middle, where they are supported by a corresponding
plumber block or part of the framing, thereby insuring to them a perfectly true
self-adjustment to the shaft.
The driving pulley is keyed on the shaft between one of the bearings and the
said revolving disk. For the purpose of causing the driving strap to bear on a
larger part of the circumference of this pulley, and to stretch the strap properly, a
tension pulley presses on it from the outside. The axle of the latter pulley revolves
in bearings forming part of a bow-shaped bracket, which is attached to or cast
together with a ring screwed to the casing of the machine concentrically with the
shaft. The heads of the bolts by which the ring is secured slinde in a dovetailed or
otherwise suitably shaped circular groove on the outside of the casing, so that the

page_text: tension pulley may be shifted around in a circle and secured in any desired
position.
The ground products from the roller mill are fed into the machine from a hopper
by a slowly revolving feed roller, an adjustable slide or valve serving to regulate
the rate of feed. The casing of the machine is made tight around the shaft by a
sort of stuffing box, so that as long as there is any material in the hopper and the
outlet of the machine is connected with a proper receptacle or with the conduit to
the dressing machine no flour dust can escape.
1878.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Carl Pieper in the Great Seal Patent Office on the 27th April
CARL PIEPER, of Dresden and Berlin. "A DISMEMBRATOR FOR FLOUR MILLS."
A communication from August Nagel and Reinhold Kaemp, of Hamburg, Germany.
This Invention relates to a dismembrating apparatus, the object of which is to
separate from each other the ground or crushed products delivered by roller mills.
Whenever roller mills, provided with smooth rollers rotating at equal circum-
'ferential speed, are used for reducing corn, the products obtained from such mills
consist of lamina of flour, semolina, and bran, the particles of which adhere so firmly
to each other that they have to be submitted to an intermediate process before they
can with advantage be treated on dressing machines.
The machines heretofore applied for detaching the said particles from each other
have not satisfactorily answered their purpose, as they more or less comminuted the
bran, and thereby caused the flour to become brown, so as to paralyze the special
advantage of the roller mills, consisting in their but slight reduction of the shell of
the grain. Moreover these machines required a great driving power.
プラ
The object of the present Invention is now the design of a machine by which
the products obtained from roller mills may be finally reduced or "dismembrated
without any further material comminution of the bran, and with but moderate
expenditure of power.
On the annexed Sheet of Drawings this machine is represented in different views;
Fig. 1 being a ground plan; Fig. 2, a front elevation; Fig. 3, a transverse section
Fig. 4, a longitudinal section; and Fig. 5, a side view of the feeding apparatus.
a and d are two round and flat disks having concentric rows of short studs or
pins a¹ and d¹ respectively on one of their surfaces in a similar style as in the well-
known disintegrating mills. The disk d is annular and is fixed to the inside of a
casing c. The other disk a is keyed on a shaft b, rotating with its ends in bearings.
The studs a¹ on the face of the revolving disk a are arranged to pass between and
close to the studs d of the fixed disk d. The bushes or brasses e¹ and e2 of the said
bearings are made very long, so as to present a large bearing surface and to prevent
heating, and they are turned spherical in the middle, where they are supported by a

page_text: coresponding plume self-adjustment to the shaft; and thereby insuring to
corresponding plummer block or part of the framing f¹, f, thereby insuring to
adjust the shaft lengthwise. The cavities n, n, in the frame of the machine
are utilized as dripping dishes for collecting the oil dripping from the bearings of
shaft b.
The driving pulley i is keyed on the shaft b between the bearing e³ and the
revolving disc a. For the purpose of causing the driving strap to bear on a larger
part of the circumference of this pulley and of stretching the strap properly, a
tension or expanding pulley k presses on it from the outside. The axle of the
pulley revolves in bearings forming part of a bow-shaped bracket 7, which is
attached to or cast together with a ring 7, screwed to the casing of the machine.
The heads of the bolts by which the ring is secured slide in a dovetailed or other-
wise suitably shaped circular groove, or along a dovetail ledge on the outside of the
casing, so that the tension pulley k may be shifted around in a circle, and secured
in any desired position. By preference the said groove or ledge is made concentric
with the shaft b.
The products obtained from the roller mill are fed into the machine from a
hopper p by a slowly revolving feed roller o driven by a worm wheel gearing r
from a pulley y; an adjustable valve t serves to regulate the rate of feed. The
casing of the machine is made tight around the shaft b by the stuffing boxes h¹
and h, so that as long as there any material in the hopper and the outlet of the
machine is connected with a proper receptacle or with the conduit to the dressing
machine, no air can enter into the casing c from the outside or circulate within the
same. In consequence, the particles of flour are separated in a more advantageous
manner from the bran, and the quality of the flour finally obtained is improved.
Moreover the required driving power is thereby reduced and no flour dust can
escape.
The main advantage of the machine however consists in the efficient dismen-
bration of the products obtained from the roller mill even if the crushing operation
is carried out under great pressure; i.e., the coharing particles of these products are
completely detached from each other, so that they may be separated on a dressing
machine.
Finally, it may be observed that the arrangement of a single rotating disk keyed
on the middle of a shaft, having its bearings at either end, insures a greater
accuracy of motion than the arrangement with two rotating disks ordinarily
employed in disintegrating mills.
Having thus set forth the nature and object of the said Invention and the manner
in which it is or may be carried out into practice, I declare that I claim as new and
important features of the described dismembrating machine,-
1. In combination with the closed casing c, containing a fixed disk d and a
rotating disk a, the tension or expanding pulley k, revolving in bearings attached
to an adjustable ring ', substantially as and for the purpose specified.
2. In combination with the closed casing c, containing a fixed disc d and a
rotating disc a, the hopper p, feed roller o, valve t, and stuffing boxes h¹ and h³, as
described and for the purpose set forth.
In witness whereof, I, the said Carl Pieper, have hereunto set my hand and
seal, this Fourteenth day of April, in the year of our Lord One thousand
eight hundred and seventy-eight.