An Improved Elevator for Raising Products of Flour or other Mills or Works.
Year: 1899

page_text: Date of Application, 3rd Feb., 1899
Complete Specification Left, 3rd Nov., 1899-Accepted, 3rd Mar., 1900
PROVISIONAL SPECIFICATION.
An Improved Elevator for Raising Products of Flour or other Mills or
Works.
We, GEORGE THOMAS SMITH, and WILLIAM GARDNER, Milling Engineers, of
Bristol Road, Gloucester, in the County of Gloucester, do hereby declare the
nature of this invention to be as follows;-
-
The elevator is designed to carry the products of a flour or other mill or works
in which it is desired to handle ground products more gently and with less abra-
sion or wear than is possible with the type of elevator hitherto employed.
Elevators are usually made to stand perpendicular or nearly so, in which
case a high speed must be given to the carrying cups or buckets in order to
make them empty or discharge their contents at the elevator top.
This high
speed throws the material carried up, with force against the bottom of the dis-
charge or delivery spout, causing dust to be made, and the rapid motion of the
cup or bucket striking into the meal at the elevator bottom or at a point where
the meal enters the elevator, also abrades the meal or semolina, or other ground
product.
By the use of the ordinary elevator a percentage of the meal is carried back
down the back legs of the elevator, as owing to the speed the time allowed for
the discharge of the contents at the delivery point is often not sufficient to
enable them to discharge entirely, (especially when it is a question of ground
products), thus also making dust which deteriorates the quality of the flour (or
other finished product) and reducing the quantity of the semolina.
The
This elevator is designed to travel the lifting cups or buckets very slowly up
or along the incline of angle given. The upper part causes the cup to discharge
all the meal and it is not carried over and down the back leg or side of the
elevator box as is the case in the ordinary type of perpendicular elevator.
gentle motion dips up the meal with much less damage to it, and 'the slow
motion of the belt and cups makes it possible to place the cups closer together
which increases its capacity, and which cannot be done in the ordinary perpen-
dicular elevator, as one cup would prevent the other from discharging its
contents.
This elevator can be used to carry a portion of its length perpendicularly and
then curve in a horizontal or inclined direction. When used to feed dressing
machines the trunk may be placed some distance from the machine thus giving
convenient room for a passage, and at the same time the spout can be placed
close to the opening for delivery into the dressing machine, thus avoiding the
necessity of long spouts which also causes wear of the meal, thereby tending
to produce impalpable dust.
According to my invention I make the elevator with a single leg instead of
two as hitherto, and at both the top and bottom of same I arrange a wheel or
roller over which passes an endless chain or belt carrying the cups or buckets,
one of such wheels being suitably actuated so as to cause the belt or chain to

page_text: travel and raise the product from the bottom to the top of the elevator, where
it is discharged through a suitable short spout either at a point from whence
it can be removed as desired, or to any desired machine for further treatment.
The upper part of the elevator.box or leg can be curved or inclined--to any
desired angle, and such curved or inclined part is provided with guides (prefer-
ably metal and secured in position in any suitable manner) upon which run
lugs or projections secured to the cups or buckets so as to support and keep same
in place.
One of the wheels or rollers is preferably made adjustable so as to permit of
the chain or belt being tightened as required.
ALLISON BROS.,
Agents for the, Applicants.
An Improved Elevator for Raising Products of Flour or other Mills or
Works.
We, GEORGE THOMAS SMITH and WILLIAM GARDNER, Milling Engineers, of
Bristol Road, Gloucester, in the County of Gloucester, 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 elevator is designed to carry the products of a flour or other mill or works
in which it is desired to handle ground products more gently and with less abra
sion or wear than is possible with the type of elevator hitherto employed.
"
Elevators are usually made to stand perpendicular or nearly so, in which
case a high speed must be given to the carrying cups or buckets in order to
make them empty or discharge their contents at the elevator top. This high
speed throws the material carried up with force against the bottom of the dis-
charge or delivery spout, causing dust to be made, and the rapid motion of the
cup or bucket striking into the meal at the elevator bottom or at a point where
the meal enters the elevator, also abrades the meal or semolina, or other ground'
product.
By the use of the ordinary elevator a percentage of the meal is carried back
down the back legs of the elevator, as owing to the speed the time allowed for
the discharge of the contents at the delivery point is often not sufficient to
enable them to discharge entirely (especially when it is a question of ground
products), thus also making dust which deteriorates the quality of the flour (or
other finished product) and reducing the quantity of the semolina.
This elevator is designed to travel the lifting cups or buckets very slowly up
or along the incline of angle given. The upper part causes the cup to discharge
all the meal and it is not carried over and down the back leg or side of the
elevator box as is the case in the ordinary type of perpendicular elevator. The
gentle motion dips up the meal with much less damage to it, and the slow
motion of the belt and cups makes it possible to place the cups closer, together,
which increases its capacity, and which cannot be done in the ordinary perpen-
dicular elevator, as one cup would prevent the other from discharging its
contents.
This elevator can be used to carry a portion of its. length perpendicularly and
then curve in a horizontal or inclined direction. When used to feed dressing
machines the trunk may be placed some distance from the machine thus giving

page_text: convenient room for a passage, and at the same time the spout can be placed
close to the opening for delivery into the dressing machine, thus avoiding the
necessity of long spouts which also causes wear of the meal, thereby tending
to produce impalpable dust.
But in order that this invention may be fully understood we will now proceed
to describe same by the aid of the accompanying sheet of drawings, in which..
Fig. 1 is a vertical section of the improved elevator.
Fig. 2 a transverse section, partly in elevation, and
Fig. 3 a horizontal section of same on the line a-a of Fig. 1.
Fig. 4 is a side elevation showing the arrangement for adjusting the bottom
roller over which the travelling chain carrying the cups or buckets passes.
According to this invention the elevator is made with a single leg 1 instead
of two as hitherto, and at both the top and bottom of same a wheel or roller 2, 3,
is arranged, over which passes an endless chain or belt 4 carrying the cups or
buckets 5, one of such wheels being suitably actuated so as to cause the belt r
chain to travel and raise the product from the bottom to the top of the elevator,
where it is discharged through a suitable short spout 6, either at a point from
whence it can be removed as desired, or to any desired machine for further
treatment.
The upper part of the elevator box or leg can be curved or inclined to any
desired angle, as shown at 7, and such curved or inclined part is provided with
guides 8 (preferably metal and secured in position in any suitable manner) upon
which run lugs or projections 9 secured to the cups or buckets 5 so as to sup-
port and keep same in place.
One of the wheels or rollers is preferably made adjustable so as to permit of
the chain or belt 4 being tightened as required, a suitable arrangement for
such purpose being shown as applied to the lower wheel or roller 3, the axis 10
of which has its bearings in blocks 11, 12, adjustable within slides 13, 14, by
means of the adjusting screws 15, 16, and 17, 18.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
1. The improved elevator consisting in an endless chain carrying cups or
buckets and passing over a top and a bottom roller enclosed in a box formed with
a single leg, substantially as and for the purpose specified.
2. The improved elevator consisting in an endless chain carrying cups or
buckets and passing over a top and a bottom roller enclosed in a box formed
with a single leg, such leg being curved or inclined at top, at which part it
is provided with guides upon which run lugs or projections on the cups or buckets
carried by the travelling endless chain, substantially as and for the purpose
specified.
Doted this 3rd dor of November 1890
ALLISON BROS.,
Agents for the Applicants.