Improvements in Elevators Specially Applicable to Stone Breaking and Ore Crushing Machines and in the Screens thereof.CHI
Year: 1885

page_text: Improvements in Elevators Specially Applicable to Stone
Breaking and Ore Crushing Machines and in the Screens
thereof.
"
I WILLIAM HENRY BAXTER, of 12, Albion Street, Leeds, in the County of
York, Engineer, do hereby declare the nature of my said invention for IMPROVE-
MENTS IN ELEVATORS SPECIALLY APPLICABLE TO STONE BREAKING AND ORE
CRUSHING MACHINES AND IN THE SCREENS THEREOF
to be as follows:-
"
The object of this invention is the construction of elevators for purpose afore-
said in such a manner as to greatly facilitate the operation to be performed by
the elevator and to reduce the wear 'and power of working elevators for raising
mineral specially in the form of macadam and to improved construction of screen.
In lieu of arranging the buckets of the elevator on the outside of the belt or
endless carrier I arrange the buckets on the inside-The width of the belt is in
excess of the width of the buckets the protruding edges and parts of the belt wider
than the bucket run over flanged guide pulleys arranged on their carrying shafts
at such a distance apart as will admit of the passage of the buckets between the
side pulleys whilst the overhanging or part of the belt protruding beyond the
buckets is received and works on the side pulleys.
It will be seen that the buckets in passing between the pair of pulleys that the
bottom of the elevator is brought into a concave line, affording great facility for
feeding or supplying the buckets with material which will be carried upwards and
may be discharged to shoot preferably slightly beyond the axial line of the upper
pulley..
Where it is required to discharge and elevate large quantities of material the
speed of travel of the belt and buckets may be increased in due ratio and in order
to give time for the buckets to discharge I use two upper pulleys parallel or
otherwise to each other and at a distance apart and between which pulleys the
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page_text: buckets will discharge-When used in connection with stone breakers I arrange
the driving wheel and pinion at the outer end of the screen instead of at the inner
end as heretofore thereby to secure the advantage of a longer driving belt and
the working parts are further removed from the dust.
The screen I construct of two cylindrical cones of different relative diameters
that is to say from the feed end, the screen will taper a certain degree for part of
its length beyond which to its delivery end it will also taper but in a less degree
to the taper from the feed end-The shaft of the screen so made will be worked
on the horizontal position and not necessarily inclined as generally heretofore.
Dated this 23rd day of December 1885

page_text: Ímprovements in Elevators Specially Applicable to Stone
Breaking and Ore Crushing Machines and in the Screens
thereof.
I, WILLIAM HENRY BAXTER of 12 Albion Street, Leeds, in the County of
York, Engineer do hereby declare the nature of my invention for "IMPROVEMENTS
IN ELEVATORS SPECIALLY APPLICABLE TO STONE BREAKING AND ORE CRUSHING
MACHINES, AND IN THE SCREENS THEREOF," 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 this invention is the construction of elevators for purpose afore-
said in such a manner as to greatly facilitate the operation to be performed by the
elevator and to reduce the wear and power required for working elevators for
raising mineral, specially in the form of macadam and to improved construction of.
screen.
The screen I construct of two cylindrical cones of different relative diameters-
that is to say from the feed end the screen will taper a certain degree for part
of its length, beyond which to its delivery end it will also taper, but in a less degree
to the taper from the feed end.
Such being the nature and object of my said Invention, the following is a complete
description of same, reference being had to the accompanying drawings forming
a part of this Specification in which Fig. 1 is a sectional elevation of my screening
and delivery apparatus.
Fig. 2 is an end view of same. The views on sheet 3 are details of the elevating
apparatus.
According to this my invention in lieu of arranging the buckets 1 of the elevator
on the outside of the belt or endless carrier 2, I arrange the buckets on the inside
of the said belt 2, the width of the belt is in excess or wider than the width
of the buckets, the protruding edges 3. 3, run over flanged guide pulleys 4. 4,
and 5, 5, arranged each pair side by side on their carrying shafts 6, 7, and at
such distances apart as shall leave sufficient room or width for the buckets 1 to
pass between the said flanged guide pulleys, whilst the overhanging or protruding
part 3 of the belt 2 runs on the guide pulleys 4. 4, and 5, 5, as above stated.
It will be seen that the buckets 1 in passing between the pair of pulleys 4, 4,
and 5, 5, that the lower part 8 of the elevator is brought into a concave line, thus
affording greater facility for feeding or supplying the buckets 1 with material
from the lower or feed screen 9, the material is carried upwards and discharged
into the shoot 10, preferably slightly beyond the axial line 7 of the upper pair of
pulleys 5, 5.
Where it is required to discharge and elevate large quantities of material, the
speed of travel of the belt 1 and buckets 2 may be increased in due ratio, and in
order to give time for the buckets 1 to discharge I use two upper pulleys or pair
of pulleys parallel or otherwise to each other, and at a distance apart and between
which pulleys the buckets will discharge. When used in connection with a stone

page_text: breaking or ore crushing machine I arrange the driving wheels 11, 12 and
pinions 13. 14 at the outer end of the screen instead of at the inner as heretofore,
thereby to secure the advantage of a longer driving belt 15, also being removed
further from the dust.
The screens 9 and 17 are so made that the shafts 6 and 7 can be worked on the
horizontal position and not necessarily inclined as generally heretofore.
This I effect by constructing the screens of two or more different taper relative
diameters 16. 17, 16, 17 that is to say-from the feed end 17 the screens will
taper a certain degree for part of their length, beyond which to its delivery end 16
it will also taper but in a less degree.
When the screening and elevating apparatus is used in connection with a stone
breaking machine, the stone is fed in by way of the feed platform 18 into the
jaws of the crusher 15, whence it is conveyed by means of the shoot 20 to the
lower screen 9 and the stone or ore not crushed or broken small enough is shot
forward into the concave part 8 and is then carried upwards by means of the
buckets 1 to the shoot 10 and thus into the upper screen 16 from whence it rolls
down the inclined shoot 21 into a cart or other receptacle or passes down the
inclined shoot 22. into the crushing: jaws of the stone breaking machine when the
operation is repeated.
The belt and buckets are operated by pinion wheels 13. 14, and pulley 12.driven
by belt 15, from the main driving shaft 23.
my
Having now particularly described and ascertained the nature of Baid
Invention, and in what manner the same is to be performed I declare that what
I claim is,
Firstly: The guide pulleys 4. 4 and 5, 5 belt 2, and buckets 1 and shoot 10
all in combination, and as described in the specification and 'drawings annexed.
Secondly. The screens constructed of two or more different taper diameters as
herein described.
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