Improvements in Apparatus for Screening Malt.
Year: 1891

page_text: Date of Application, 20th Feb., 1891
Complete Specification Left, 19th Nov., 1891-Accepted, 19th Dec., 1891
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Screening Malt.
ALFRED CLARK of Hatton Gardens Newark in the County of Nottingham-
shire Engineer do hereby declare the nature of this invention to be as follows:-
The object of my invention is to provide means for more thoroughly screening
malt and performing this duty in much larger quantities than hitherto, without
adding materially to the size of the apparatus, which in this invention is constructed
as light as possible consistent with due strength, so that it may easily be moved
about for use, by one man.
Hitherto malt screens have been made with one bed only, and in my invention I
construct two beds, one fixed and one loose upon a spindle."
The main frame of the apparatus is made preferably of wood, the sides being
about six inches deep. The hopper is mounted at the top in the usual way and is
formed with a wood frame preferably covered with sheet iron, but instead of being
fed from the front, it is fed from an opening in the back, this hopper is provided
with a feed slot which is regulated by one or two small hand wheels and screws or
other suitable means inside the frame in front of the apparatus. This hopper
delivers the grain at the top part of the upper bed which is made with the usual
perforated bars, this bed is mounted in a strong wood frame about three feet long
and is supported by a spindle running through, across its centre, which acts as a
pivot in main frame working in metal bushes; the bed frame being pressed up, by
springs at its upper end, the proper distance from the delivery slot of the hopper.
The top end of this frame is provided with a handle which projects at the back, and
the object of this pivotted frame, is for freeing the grain should it get clogged, by
depressing it through the handle and letting it spring back to its normal position,
thus increasing the distance, between the frame and the feed slot, and shaking up
the grain upon the bed, so as to start it again on its downward course. This loose
bed extends to about the centre of the apparatus and is set at a sufficient angle to
cause the grain to run down freely, at the bottom of this bed a vertical breaker is
fixed across from side to side of the main frame of the apparatus, this breaker
extends down and over the second perforated wire bed which is fixed, the lower
part of the breaker over the lower bed being adjustable by hand wheels and screws
or other suitable means; this breaker is preferably constructed of wire of square
mesh instead of wire bars as in the beds, so that it turns the grain over more before
falling upon the lower fixed bed. This lower bed is made similar to the upper bed,
but is fixed instead of pivotted, and is set at a steeper angle, so as to thoroughly rub
off all the shives and comb which have not been taken off by the top bed and
breaker. The back part of the apparatus is made about four feet in height and
slopes to the front to a foot board about one foot high so as to leave plenty of room
in front for the malt to fall without choking up the lower part of the apparatus..
The foot board and back support may be hinged so as to fold up for convenience in
stowing away, and the space between these when the apparatus is in use, receives
the dust, shives and comb from the malt in screening.
Various modifications may be made and any suitable materials used always
preserving the essential features of my invention.
DOL 1
CL1001
H. T. TALLACK,
28, Hatton Garden, London, E.C., Agent for Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Screening Malt.
ALFRED CLARK Hatton Gardens Newark Nottinghamshire do hereby declare
the nature of this invention and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:-
The object of my invention is to provide means for more thoroughly screening
malt, and performing this duty in much larger quantities than hitherto, without
adding materially to the size of the apparatus, which in this invention is constructed
as light as possible consistent with due strength, so that it may easily be moved
about for use by one man. Hitherto malt screens have been made with one bed
only, and in my invention I construct. two beds, one fixed, and one loose upon a
spindle. The main frame of the apparatus is made preferably of wood, the sides
being about six inches deep. The hopper is mounted at the top in the usual way,
and is formed with a wood frame preferably covered with sheet iron, but instead of
being fed from the front, it is fed from an opening in the back; this hopper is
provided with a feed slot, which is regulated by one, or two small hand wheels, and
screws, or other suitable means inside the frame in front of the apparatus. This
hopper delivers the grain at the top part of the upper bed, which is made with the
usual perforated bars; this bed is mounted in a strong wood frame about three feet
long, and is supported by a spindle running through, across its centre, which acts
as a pivot in main frame working in metal bushes, the bed frame being pressed up
by springs at its upper end the proper distance from the delivery slot of the hopper.
The top end of this frame is provided with a handle, which projects at the back,
or side, and the object of this pivotted frame is for freeing the grain should it get
clogged by depressing it through the handle, and letting it spring back to its
normal position; thus increasing the distance between the frame, and the feed slot,
and shaking up the grain upon the bed, so as to start it again on its downward
course. This loose bed extends to about the centre of the apparatus, and is set at
a-sufficient angle to cause the grain to run down freely; at the bottom of this bed
a vertical breaker is fixed across from side to side of the main frame of the
apparatus; this breaker extends down, and over the second perforated wire bed
which is fixed, the lower part of the breaker over the lower bed being adjustable
by hand wheels, and screws, or other suitable means; this breaker is preferably
constructed of wire of square mesh instead of wire bars as in the beds, so that it
turns the grain over more before falling upon the lower fixed bed. This lower
bed is made similar to the upper bed, but is fixed instead of pivotted, and is set at a
steeper angle, so as to thoroughly rub off all the shives, and comb which have not
-been taken off by the top bed, and breaker. The back part of the apparatus is
made about four feet in height, and slopes to the front to a foot board about one
foot high so as to leave plenty of room in front for the malt to fall without choking
up the lower part of the apparatus. The foot board, and back support may be
hinged, so as to fold up for convenience in stowing away, and the space between
these when the apparatus is in use receives the dust, shives, and comb from the
malt in screening. Various modifications may be made, and any suitable materials
used, always preserving the essential features of my invention.
In the accompanying drawings,
Fig. 1 represents a perspective view of my apparatus, and Fig. 2 a longitudinal
section.
Similar letters denote corresponding parts in both figures.
A, is the hopper; B, an adjusting arrangement for regulating the supply of malt
to the upper bed; C, is the upper bed pivotted at D; E, is the spring which keeps
the bed raised to position; F, is the handle passing through the side of the frame
from the upper bed, by which the bed is vibrated, when required by rotating
handle, thus bringing cam piece attached to its spindle in contact with roller on bed

page_text: frame; G, is the vertical breaker with adjustment at H; I, is the lower fixed bed;
J, the front board, and K, folding legs to support back part of screen.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1. The use in combination with apparatus for screening malt of double beds,
screens, or sieves, arranged so that the malt to be screened falls from a hopper, and
passes over the two beds in succession.
2. The use in combination with double bedded malt screens of a breaker placed
vertically, or nearly so, so that the malt after passing over the upper bed falls
against the breaker, and is thereby turned over.
3. The use in combination with apparatus for screening malt of a pivotted bed,
provided with means for shaking the malt upon it when necessary.
4. The construction in apparatus for screening malt of the hopper, which delivers
the grain at the back instead of the front.
5. The improved apparatus for screening malt substantially as described, and
illustrated in the accompanying drawings.
Dated this 19th day of November 1891.
H. T. TALLACK,
28, Hatton Garden, London, E.C., Agent for Applicant.