Improvements in Machines for Cooling, Scouring, and Cleaning Malt.
Year: 1891

page_text: Date of Application, 27th Nov., 1891
Complete Specification Left. 26th Sept., 1892-Accepted, 29th Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Machines for Cooling, Scouring, and Cleaning
Malt.
1, EDWARD GRIFFITH Brewer of 33 Chancery Lane in the County of London,
and 30 East Parade, Leeds, in the County of York, Fel. Char. Inst. Patent
Agents, do hereby declare the nature of this invention (a communication to me
from abroad by Rudolph J. Behringer of Denver in the County of Arapahoe and
State of Colorado, in the United States of America) to be as follows:-
It is well known to those familiar with the handling of malt that if it is
stored immediately after leaving the kiln or while hot it will continue to dry in the
It is also
storage-chamber, and thereby diminish its value for brewing purposes.
well known that malt when it leaves the kiln is mingled with dirt, sprouts, and
foreign substances to a greater or less extent, the sprouts having fallen off of the
grain during the process of drying in the kiln. Hence to remove any sprouts
which may not have dropped off, as well as to separate foreign substances from
the kernels of grain, the malt should first be subjected to a scouring process.
Hence the object of this invention is the scouring, cleaning and cooling of the
malt after it leaves the kiln.
According to this invention I provide standards suitably connected at the top.
and bottom and constituting the main frame-work of the machine.
Centrally supported in the frame is a stationary cylindrical tank through the
longitudinal centre of which passes a rotating shaft, provided with arns rigidly
secured thereon. These arms are of such length as to reach nearly to the
shell of the cylinder and are arranged spirally on the shaft, so as to force the
material from any point therein toward one end thereof and out of a discharge-
opening thereat, as shaft revolves.
The tank is provided with an inlet-opening and a discharge-opening, the former
being located in the upper part of the tank near one extremity and the latter at
the opposite extremity close to the bottom. The top is provided with an opening
closed by a sliding cover. The tank shaft is provided at one extremity with a
bevel gear-wheel engaging a bevel-pinion rigidly secured to a transverse shaft,
extending across the end of the machine. The extremities of the transverse shaft
project beyond the frame on either side of the machine.
On one side the shaft has a pulley, while on the opposite side two pulleys are
located. Power may be applied to the mechanism from any suitable motor by
running a belt from the motor to the pulley on one side while one of the other
pulleys drives a shaft provided with fans rotating in a drum provided with air-
inlet conduits, one being located on each side of the drum, which is also provided
with a discharge-conduit. As the material leaves the tank through the opening.
therein it passes to a receptacle or box and falls upon an inclined plate and thence
to another plate, but oppositely inclined, whence it passes to the bottom of the
receptacle and through an opening into a suitable receptacle provided with a
triangular plate upon which the malt first drops, passing thence to an inclined
supported within the
screen forming the bottom of receptacle. This receptacle
frame-work and beneath the tank, by the use of suitable metal straps, which allow
the receptacle a swinging or oscillating movement under the influence of a rotating
shaft, provided with a double crank connected with one end of the receptacle by
a pitman and driven by pulley from a pulley on the transverse bevel pinion shaft.
The screen is centrally supported underneath by a trausverse bar to prevent it
from sagging downward in the centre, and to aid it in the performance of this
function the transverse bar is provided with a bow-shaped brace having its

page_text: extremities secured to the bar with a screw passing through its centre and bearing
upon the bar, but not entering the same. This screw is provided with a nut on
each side of the brace, and by the adjustment of these nuts the space between the
bar and the spring can be increased or diminished, as may be desired, and the
screen thus kept in proper position. The receptacle is provided with an opening
or chute through which the material after leaving the screen passes to the bottom
of a conduit being momentarily supported in,said conduit by the projections. The
conduit is open at the bottom, and is .connected with a conduit at the top and
through this with fan drum. The latter conduit projects downward a short
distance from its connection with the other conduit so as to form a receptacle
provided with a small door hinged at the top and free to open by pressure from
above. During the operation of the machine the suction produced by the air-blast
will normally maintain the door in the closed position. The object of receptacle
is to catch the dirt or foreign particles of matter which might fall thereinto. This
accumulation will after some time be such that its gravity will overcome the force
of the suction when the door will open and the material fall from the machine.
The conduit which has been heretofore referred to, leads from the receptacle to
drum and is provided with a receptacle having a door hinged and adapted to
open by pressure from above. This mechanism has the same function as the
similar mechanism located on the opposite side of the machine.
From the foregoing description the operation of my improved machine will be
readily understood. Power having been communicated to the machine from any
suitable motor, the malt to be treated is fed to the cylindrical tank wherein it is
scoured by the action of arms and simultaneously it is discharged to the receptacle
which is connected with the movable receptacle. As soon as the malt passes out at
the tank it is acted upon by a current of air created by the suction mechanism,
this air-current removes a great deal of the dirt, sprouts & c., from the malt, which
dirt and foreign particles are carried upward by the air-blast and discharged
through the spout. It will be observed that the receptacle is provided with an
opening in its bottom, which from its location beneath inclined plate is so protected
that the material discharged from the tank cannot escape therethrough; yet permits
the free air supply for winnowing the malt. From this receptacle the material
passes to the plate whence under the influence of the shaking mechanism, it is
spread out and evenly distributed over the screen which separates therefrom the
finer and heavier particles of dirt, sand, &c., whence it passes to the bottom of the
conduit when it is again directly acted upon by the air-current produced by
the blast mechanism above. At this point the cleaning of the malt is completed
and the dirt is carried upward by the air and out through discharge spout-leading
from the drum.
It will be observed that the screen located in the bottom of receptacle may be
easily removed therefrom by simply removing a few screws, when the screen can be
taken out of the receptacle from underneath. This is a very important feature,
inasmuch as it may be often necessary or desirable to change the screen in the
machine and replace it by one of finer or coarser mesh, as the exigencies of the
case may require.
Dated this 27th day of November 1891:

page_text: COMPLETE SPECIFICATION.
Improvements in Machines for Cooling, Scouring, and Cleaning
Malt.
I, EDWARD GRIFFITH BREWER, of 33 Chancery Lanc, in the County of
London, and 30 East Parade, Leeds, in the County of York, Fel. Chart. Inst.
Patent Agents, do hereby declare the nature of this invention (a communication
to me from abroad by Rudolph J. Behringer, of Denver, in the County of
Arapahoe and State of Colorado in the United States of America) and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
It is well known to those familiar with the handling of malt, that if it is
stored immediately after leaving the kiln or while hot, it will continue to dry in the
storage chamber, and thereby diminish its value for brewing purposes. It is also
well known that malt when it leaves the kiln is mingled with dirt, sprouts, and
foreign substances to a greater or less extent, the sprouts having fallen off the
grain during the process of drying in the kiln. Hence to remove any sprouts
which may not have dropped off, as well as to separate foreign substances from
the kernels of grain, the malt should first be subjected to a scouring process.
Hence the object of this invention is the scouring, cleaning, and cooling of the
malt after it leaves the kiln.
In the accompanying drawings is illustrated an embodiment of the invention.
In the drawings,
Fig. 1 is an elevation of one side of the machine.
Fig. 2, a similar view of the opposite side.
Fig. 3 is an elevation of one end.
Fig. 4 an elevation of the opposite end.
Fig. 5, a longitudinal vertical section taken through the machine from the top
of stationary cylinder downward on the line y y Fig. 3.
Fig. 6 is horizontal section taken on the line z Fig. 5.
Fig. 7 is a vertical section taken on the line xa, Fig. 6.
Similar letters or numerals of reference refer to like parts in the various figures.
According to this invention, standards 10, 10 are provided, suitably connected
to the top and bottom and constituting the main framework of the machine.
Centrally supported in the frame is a stationary cylindrical tank 11, through
the longitudinal centre of which passes a rotating shaft 12, provided with arms 13
rigidly secured to collars 14, surrounding the shaft and adjustable thereon. These
arms are of such length as to reach nearly to the shell of the cylinder and are
arranged spirally on the shaft, so as to force the material from any point therein
toward one end thereof and out of a discharge-opening thereat as shaft 12
revolves. The tank 11 is provided with an inlet-opening 15 and a discharge
opening 16, the former being located in the upper part of the tank near one
extremity and the latter at the opposite extremity close to the botton. The
top is provided with an opening 17, closed by a sliding cover 18. This opening
gives access to the interior of the tank when for any reason it may be necessary,
as for repairing purposes. The tank shaft 12 is provided at one extremity with a
bevel gear-wheel 19, located outside of the tank and adapted to engage a bevel
pinion 20, rigidly secured to a transverse shaft 21, extending across the end of
the machine and journalled in suitable boxes 22, 22, secured to two of the
standards or posts 10, 10, of the framework. The extremities of the transverse
shaft 21 project beyond post 10 on either side of the machine, these extensions
being provided with pulleys. On one side of the machine a pulley 23 is located,
while on the opposite side two pulleys 24 and 25 are located. Power may be
applied to the mechanism from any suitable motor by running a belt from the
motor to pulley 23. Pulley 25 on the opposite end of the shaft is connected by

page_text: means of a belt 26 with a pulley 27, made fast to one extremity of a shaft 28,
journalled by means of boxes 30, 30, in top cross beams 29, 29 connecting the
main standards 10. Shaft 27 is provided with fans 31 rotating in a drum 32
provided with air-inlet conduits 33 and 34, one being located on each side of the
drum, which is also provided with a discharge conduit 35. As the material leaves
the tank through opening 16, it passes to an outlet chamber or box 36 and falls upon
an inclined plate 37, and thence to another plate 38, but oppositely inclined, whence
it passes to the bottom of the receptacle and through an opening 39 into a suitable
receptacle 40, provided with a triangular plate 41, upon which the malt first
drops, passing thence to an inclined screen 42, forming the bottom of a reciprocating
receptacle 40. This receptacle is supported within the framework and beneath the
tank 11 by metal straps 43, 44, 45, and 46. These straps are secured to the frame-
work of the machine at one extremity and to the ends of the receptacle at the
opposite extremity. These straps allow the receptacle a swinging or oscillating
movement under the influence of a rotating shaft 48, provided with a double
crank 19; connected with one end of the receptacle by a pitman 50. The shaft 48
is supported upon uprights 10 by means of suitable boxes 51, and is provided at
one extremity with a pulley connected with a pulley 24 by means of a belt 53.
The screen 42 is centrally supported underneath by a transverse bar 54. The
object of this bar is to prevent the screen from sagging or bending downward, in
the centre and to aid it in the performance of this function the transverse bar is
provided with a bow shaped brace 56, having its extremities secured to the bar
with a screw 57 passing through its centre and bearing upon the bar, but not
entering the same. This screw is provided with a nut on each side of the brace,
and by the adjustment of these nuts the space between the bar and the spring can
be increased or diminished, as may be desired, and the screen thus kept in proper
position. The receptacle 40 is provided with an opening or chut 58, through
which the material after leaving the screen passes to the bottom of a conduit 59,
being momentarily supported in said conduit by the projections 60. Conduit 59 is
open at the bottom, and is connected with conduit 33 at the top, and through this
with fan drum 32. The latter conduit 33 projects downwards a short distance
from its connection with the other conduit 59, so as to form a receptacle 70,
provided with a small door 61, hinged at the top and free to open by pressure from
above. During the operation of the machine the suction produced by the air-blast
will normally maintain the door in the closed position. The object of receptacle 70
is to catch the dirt or foreign particles of matter which might fall thereinto.
This accumulation will after some time be such that its gravity will overcome
the force of the suction, when the door 61 will open, and the material fall from
the machine. The conduit 34, which has been heretofore referred to leads from
outlet chamber 36 to drum 32, and is provided with a receptacle 62, having a
door 63, hinged and adapted to open by pressure from above. This mechanism
has the same function as the similar mechanism located on the opposite side of the
machine.
From the foregoing description the operation of this improved machine will be
readily understood. Power having been communicated to the machine from any
suitable motor, the malt to be treated is fed to the cylindrical tank through
opening 15 wherein it is scoured by the action of arms 13 and simultaneously
carried toward the opening 16, whence it is discharged to the receptacle 36, which
is connected with the moveable receptacle 40. As soon as the malt passes out of
the tank, it is acted upon by a current of air created by the suction mechanism
located at the top of the machine and connected with receptacle 36: this air
current removes a great deal of the dirt, sprouts, etc. from the malt, which dirt
and foreign particles are carried upward by the air-blast and discharged through
the spout 35, leading from the drum 32. It will be observed that the outlet
chamber 36 is provided with an opening 66 in its bottom, which from its location
beneath inclined plate 38 is so protected, that the material discharged from the
tank cannot escape therethrough, yet permits the free air supply for winnowing.

page_text: the malt. From this receptacle 36 the material passes to the plate 41, whence
under the influence of the shaking mechanism it is spread out and evenly
distributed over the screen 42, which separates therefrom the finer and heavier
particles of dirt, sand, etc.; whence it passes to the bottom of the conduit 59,
when it is again directly acted upon by the air current produced by the blast
mechanism above. At this point the cleaning of the malt is completed and the
dirt is carried upward by the air and out through discharge spout 35, leading from
the drum. It will thus be observed that this improved machine thoroughly scours
the malt and separates therefrom all particles of dirt and foreign material, and
yet at the same time it does not break or in any manner injure the malt, but leaves
it in as good condition as when it receives it, so far as the kernels or berries of
the grain are concerned, the malt being discharged from the machine at the
bottom of conduit 59 in a perfectly clean condition, being at the same time cooled
and fit for storing. It may be carried from the bottom of receptacle 59 to the
storage bin by suitable elevating mechanism not herein shewn and forming no part
of this invention, the object of which is to thoroughly prepare the malt for
storing.
It will be observed that my screen 42, located in the bottom of reciprocating
receptacle 40, may be easily removed therefrom by simply removing a few screws,
when the screen can be taken out of the receptacle from underneath.
This is a
very important feature inasmuch as it may be often necessary or desirable to
change the screen in the machine and replace it by one of finer or coarser mesh,
as the exigencies of the case may require.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
1. The combination of a cylinder having revolving blades therein, a reciprocating
frame located beneath the said cylinder, a receptacle 36, connecting the said frame
and cylinder, a triangular distributing plate within the sail frame, a screen located
below the said plate, a fan-casing, a flue connecting the said casing and receptacle,
and a flue having an open lower end connected with the said frame and with the
said casing, as described.
2. A screener consisting of a vibratory frame having a triangular distributing
plate therein, and having a screen below the said plate as described.
3. The combination, with a cylinder, of revolving blades therein, a reciprocating
screen located beneath the said cylinder, a receptacle having an apertured bottom,
a plate located in the said receptacle above the said aperture, a discharge for the
said screen, a suction mechanism, and flues connected with the receptacle and with
the discharge, both of the said flues communicating with the suction mechanism,
substantially as described.
4. The combination, with a cylinder having revolving blades therein, of a
framework carrying the said cylinder, a frame swung from the said framework
below the said cylinder, a receptacle having an apertured base mounted on the
said framework, and connecting the said cylinder and frame, a plate over the
aperture in the base of the said receptacle, an air-flue rising from the top of
the receptacle, a triangular distributing plate contained in the said frame, a screen
below the said plate, an uptake communicating with the said frame and into which
the said frame projects, and a casing mounted on the said framework and con-
nected with the said uptake and air-flue, substantially as described.
Dated this 26th day of Cantambon 1900
BREWER & SON,
33, Chancery Lane, London, Agents for Applicant.