Improvements in Elevating, Trimming, and Conveying Apparatus for Grain and other Cereals.
Year: 1897

page_text: Date of Application, 6th July, 1897
Complete Specification Left, 6th Apr., 1898-Accepted, 2nd July, 1898
PROVISIONAL SPECIFICATION.
Improvements in Elevating, Trimming, and Conveying Apparatus for
Grain and other Cereals.
ROBERT VICTOR BROODBANK, 20, Warren Road, Leyton, E., Grain Manager,
and EDWARD STAMFORD HOUGII, 2, Adelaide Road, Brockley, Kent, Engineer,
do hereby declare the nature of this invention to be as follows:-
Our invention relates to a means of elevating bulk grain and other cereals
by means of an improved form of spiral screw also of trimming the grain &c.
to the foot of the elevator and disposing of the bulk when elevated to the required
height by improved spiral trimmers and conveyors-and we accomplish this
object by the following means:-In all former spiral screw elevators when the
least wear has taken place the grain has been damaged by working between the
edge of the screw thread and the enclosing tube or pipe-to prevent this we form
a groove or its equivalent upon the edge of the thread which is kept smaller in
diameter than the inside of the tube in which it works-into this groove we fit
a long brush made of wire or bristles--or we may fit a packing piece of any
suitable material so that what ever is employed may be easily renewed and kept
up to its work or in the case of the brush edge being employed this would give
way and allow the grain &c. to pass back rather than crush it.
Trimming. At the foot of the elevator we attach suitable gearing so as to
drive one or more horizontal shafts to which are fixed universal or differential
motion joints these are coupled on to trimming worms in suitable lengths and
universally jointed so that the trimming worms may be led about around corners
or for instance in a ships hold around stanchions &c. so that these trimming
worms all being driven from the central vertical elevating screw are continuously
gathering in the bulk material ready to be lifted-these trimming worms may
be used with longitudinal bars of any width either of flat shape or the segment
of a circle supported from the worm shafts so as to form an easy run for the
material being trimmed and prevent the screw throwing the material away from
itself instead of being carried along in a proper manner the trimming worms
may be provided with brush edges (as before described) or may be plain the
trimming screws may be supported where necessary by tackle.
Conveying. The outlet from the top of the clevator leads into a pipe and the
bulk material would in some cases run by gravity to the desired position of outlet
but where the pipe has to be in a horizontal position, or any degree above a
horizontal position, then a spiral screw conveyor would have to be employed and
as the same crushing effect with the plain screw would take place (as in the
elevator) we prefer to employ the same form of screw as before described for
elevating.
Dated this 5th dow of T₁1, 1807
EDWARD S. HOUGH.
R. V. BROODBANK.

page_text: Improvements in Elevating, Trimming, and Conveying Apparatus for
Grain and other Cereals.
We, ROBERT VICTOR BROODBANK, of 20, Warren Road, Leyton, in the County
of Essex, Grain Manager, and EDWARD STAMFORD HOUGH, of 2, Adelaide Road,
Brockley, in the County of Kent, Engineer, 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:-
This invention relates to improvements in screw elevators for elevating bulk
grain, and other cereals and also in apparatus for trimming the grain or the like
to the elevator and disposing of the bulk when elevated to the required height.
In spiral screw elevators as hitherto usually made, when the slightest wear
has taken place in the screw portion thereof, the grain is damaged by working
between the edge of the said screw thread and the enclosing tube or pipe.
Now it is the object of this invention to obviate this disadvantage and to this
end we form a groove, recess or the like along the edge or periphery of the screw
thread, which said thread is made smaller in outside diameter than the internal
diameter of the tube enclosing it. Into this groove or recess we fit a brush made
of wire, bristles or other suitable material or we may provide the said groove with
a packing piece of any suitable material. With this arrangement the grain or
the like, instead of being crushed between the surfaces of the enclosing pipe and
the screw thread, is enabled to pass between the said edges and the brush or
packing piece can easily be removed and renewed when wear takes place.
.
For trimming the grain or other cereal to the foot of the elevator, we provide
a number of elevator sections of the spiral screw type, the said sections being
secured together by universal joints so that they may be laid in any direction,
for instance, around corners or around stanchions, etc., in a ship's hold. The
conveyor shafts
are adapted to be driven from gearing to which they
are connected by universal joints and which is advantageously driven
from the elevator shaft. The conveyor sections are advantageously pro-
vided with guides or guards of any suitable shape which are supported upon their
shafts so as to form an easy run for the material being trimmed and to prevent
the said material being thrown out from the conveyors, and the spiral threads of
the said conveyor sections, can, if desired, be formed with recessed peripheries
provided with the brush or packing piece as herein before described.
The grain which has been conveyed to the top of the elevator can be discharged
into an inclined shoot; or where it has to be conveyed in a horizontal direction
on being discharged from the elevator, we advantageously provide spiral screw
conveyors which may be furnished with plain screws or with screws having
grooved packed edges of the kind hereinbefore described.
To enable the invention to be fully understood we will. describe it by reference
to the accompanying drawing, in which :-
-
Figure 1 is a sectional elevation of combined apparatus for trimming elevating
and delivering grain or the like, constructed according to our invention:
Figure 2 is a section on the line 2-2 Figure 1 drawn to a larger scale:
Figure 3 is a section drawn to a larger scale shewing the construction of our
screw:
Figure 4 is a plan drawn to a larger scale of a bevel gear box containing gear
for driving the trimmers; and,
Figure 5 is an elevation thereof.
a.is the tube or pipe forming the jacket around the elevator, and
is the screw

page_text: bevel
gear
0 is
spindle or shaft, the said shaft being here shewn driven from the shaft c by the
d, the shaft c being designed to be rotated by any suitable means.
the spiral thread forming the screw elevator which is coiled around the shaft b.
As above described and as shewn more clearly in the section, Figure 3, this screw e
is formed so as to provide a groove e along its periphery and the screw has an
outside diameter which is less than the inside diameter of the jacket or pipe a
which encloses it. f is the brush with which the screw e is provided, the said
brush being fitted into the peripheral groove e¹ and projecting beyond the peri-
phery of the screw thread so as to bear against the inside of the pipe a.
As above mentioned in lieu of the brush f we can employ any other suitable
packing, such, for instance, as rubber.
With this arrangement it will be obvious that when grain is being elevated
by our improved elevator, the grain, should it be forced between the outer edge
of the screw e and the inside of the enclosing pipe a, will not be crushed but
will be allowed to pass between the said surfaces and should the brush be worn.
so as to make a deficient contact with the inside of the enclosing pipe a, the
brush for other packing can be easily removed and replaced by a new one.
trimmers.
sections forming the
are
the
The drawing shews our improved elevator in combination with our improved
means for trimming the grain or other cereal to the foot of the said elevator.
It is to be understood, however, that our trimmers can be used in
combination with any other suitable form of elevator. 9. I
The said screws
screw conveyor
can be formed, if desired, with our improved peripheral packing device or they
may be plain and they are fitted to shafts h, the ends of which are adapted to be
secured to the ends of the adjacent sections by universal joints which may be
of any suitable construction. The conveyors forming the trimmers are, as above
mentioned, advantageously driven from the shaft b of the elevator through the
medium of suitable gear. The gear which we find suitable is shewn in Figures 1,
4 and 5 and comprises a box or casing j to which the bottom of the jacket or
pipe a is secured by bolts j', j¹ and into which the shaft b extends, the said shaft b
having at its lower end a bevel wheel b¹. This bevel wheel 61 gears with a number
of bevel wheels k, k which are arranged upon the ends of short spindles or shafts /
which pass through the casing j as clearly seen in the drawing. The number
of these bevel wheels k, k and shafts 7, 7 corresponds to the number of trimmers
to be employed and the outer ends of the said shafts 1, 1 are made so that they
can be connected by the universal joints i, with the ends of the said trimmers
as shewn in Figure 1.
With this arrangement of trimmers it will be obvious that the grain or other
cereal can be conveyed from any point to the foot of the elevator a as the universal
joints, enable the trimmers to lend themselves to irregularities in the path
along which the grain must be fed.
m, m are the guides or the like which are loosely mounted upon the shafts h
of the conveyor sections, the said guides m normally resting upon the ground,
as shewn in dotted lines in Figure 2, but assuming the horizontal position shewn
in full lines in the drawing when grain is being fed along by the conveyors.
They serve, as above mentioned, to guide the grain and also to prevent it being
thrown out from the screw conveyor.
When the grain has reached the upper end of the elevator a, it can drop down
the inclined shoot al as shewn in the drawing or it may be delivered into a suitable
screw conveyor which may be of ordinary construction or may be provided with
our peripheral packing.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
1. In screw elevators for grain and other cereals, making the screw of less
diameter than the enclosing pipe, recessing or grooving its peripheral edge and

page_text: fitting the said grooved or recessed edge with a brush or other suitable packing
piece, substantially as, and for the purpose, hereinbefore described.
2. The employment for trimming grain and other cereals of a number of screw
conveyor sections, the shafts of which can be connected together and to suitable
driving mechanism. by universal joints, substantially as, and for the purpose,
herein before described.
3. The trimmers for grain and other cereals consisting of the screw conveyor
sections the shafts of which are connected together by universal joints, as described
and illustrated in Figures 1 and 2 of the accompanying drawing.
4. The improved screw elevator for grain and other cereals hereinbefore described
and illustrated in Figures 1 and 3 of the accompanying drawing.
5. The combination and arrangement of parts forming the improved apparatus
for trimming, elevating and discharging grain or other cereals, hereinbefore de-.
scribed and illustrated in the accompanying drawing.
Dated the 6th day of April 1898.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants..