Improvements in Centrifugal Curing Machines.
Year: 1893

page_text: Date of Application, 17th May, 1893
Complete Specification Left, 8th Feb., 1894 --Accepted, 14th Apr., 1894
.
PROVISIONAL SPECIFICATION.
Improvements in Centrifugal Curing Machines.
WILLIAM PRICE ABELL Whitworth Scholar, Engineer, Tooley Park
Hinckley England, and, L'Union House in the County of Essequebo British
Guiana, do hereby declare the nature of this invention to be as follows:-
This invention consists in the construction of centrifugal machines for separating
solid substances from fluids, or semi-fluids, the particular feature of these machines
according to the present invention being that they may with greater facility dry
close grained, or partly non-porous substances such as gummy masse-cuite, low
grained sugars &c...
In centrifugal machines as hithertoo known the masse-cuite has been spun_in_
baskets with straight longitudinal sides with their tops, and bottoms terminating in
perforated discs, these offer a very small drying surface and their relatively large
flat longitudinal surfaces allow the accumulation & retention of the liquids which
are found in practice to collect on the inner side through their low specific gravity.
The new feature of this invention consists in having a casing, or additional lining,
that can be inserted inside the ordinary plane circular centrifugal basket, this
casing has a deep undulating, or corrugated lining in such a manner that there is a
large perforated surface exposed to the masse-cuite, furthermore this said filtering
surface projects right through the wall of masse-cuite in such a way that it passes.
through the various zones or layers of the wall of masse-cuite, thus facilitating the
exit of the liquids which through the non-porousness of the said masse-cuite is forced
towards the centre through its low specific gravity.
This invention furthermore consists in the various modifications for the easy
insertion, and removal of the false, or corrugated lining, and also for the construction
of baskets having deep continuous corrugated sides.
Having described the object of my invention I will briefly describe the way in
which I accomplish this.
Inside an ordinary centrifugal basket I fit a perforated lining having deep
corrugations; these corrugations can be either vertical or horizontal, longitudinal,
or circumferential; this said lining is made in segments to facilitate its removal or
insertion, from, or into the ordinary centrifugal baskets, these said segments are
Instead of making
secured together with bolts, hinges, or other suitable means.
these corrugated linings in segments I can make them removable, by making the
top of the ordinary centrifugal basket removable by replacing the rivets with some
portable fastenings such as screws, whereby the said top can be easily removed, to
this said top is secured the corrugated lining thus enabling the ordinary basket-top
to be replaced by a top to which a corrugated lining is fastened, and which said
top can be easily secured to the ordinary basket sides. I do not bind myself to
having the top and false casing connected, but can have them separate when so
desired. By this means the basket can be used as usual with plane sides for curing
free sugars, and when it is desired to cure sticky masse-cuite, the corrugated lining
can be removed by removing the top of the ordinary centrifugal basket. Further-
more I do not confine myself to linings only, but when desireable can make the
centrifugal baskets with either longitudinal, or circumferential continuous undula-
tions, projecting through, or nearly through the wall of masse-cuite to facilitate the
exit of the liquor from the solids.

page_text: Improvements in Centrifugal Curing Machines.
I WILLIAM PRICE ABELL a subject of the Queen of Great Britain residing
at L'Union Essequebo British Guiana and Tooley Park, Hinckley, England,
Whitworth Scholar, Associate Member of the Institute of Civil Engineers,
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 centrifugal machines for separating solid substances
from fluids or semi-fluids, the object of the invention being to construct a machine
which will dry with greater facility and more perfectly than hitherto close grained
non-porous or partly non-porous substances such as gummy masse-cuite, low graded
sugar and the like."
In centrifugal machines as hitherto known the masse cuite
has been treated in centrifugal baskets with vertical sides, terminated at the top
and bottom by perforated discs, these parts offer however, a very small drying
surface and their large flat surfaces allow the accumulation and retention of the
liquids which are found in practice to collect on the inner sides of the material
being dried through their low specific gravity.
According to my invention I provide within the ordinary plane centrifugal
basket a lining having deep undulations or corrugations arranged circumferentially
or longitudinally whereby a great filtering surface is presented to the masse cuite,
which filtering surface by being formed as described projects at intervals through
or nearly through the various zones of the wall of masse cuite and into the
imprisoned liquid herein before described whereby the latter can escape through
the perforations presented to it.
may
In order that the lining may be placed within the ordinary centrifugal basket
through the opening in the top of the latter I construct the said lining in segments
secured together by bolts hinges or other suitable means.
Or in some cases
remove the top of the basket to allow of the introduction of the lining another
similar top being then placed to the basket and secured to the lining screws or
other means being employed to fix the top to the basket, whereby the said top and
lining can be easily removed. By this latter arrangement the basket can be used
with its plane sides for curing free sugars, and when it is desired to cure sticky
masse cuite the corrugated lining together with its top can be secured to the
basket.
Instead of a lining as herein before described I may sometimes form the wall of
the basket with the undulations or corrugations.
To enable my invention to be fully understood I will describe how it can be
carried into practice by reference to the accompanying drawings, in which,
Figure 1 is a vertical section of an ordinary centrifugal basket provided with a
segmental lining according to my invention and having circumferential undulations
or corrugations.
Figure 2 is a plan of the same partly in section on the line 2-2, Figure 1...
Figure 3 is an elevation illustrating the manner of jointing the segments of the
lining shewn in Figures 1 and 2.
Figure 4 is a similar view to Figure 1 shewing the lining with longitudinal
undulations or corrugations the manner of jointing being modified.
Figure 5 is a plan of the same partly in section on the line 5-5, Figure 4.
Figure 6 illustrates the manner in which the segments of the lining shewn in
Figures 4 and 5, is folded so as to enable it to be withdrawn from the centrifugal
basket.
Figure 6 illustrates a method of securing the segments of the lining together
with bolts.

page_text: Figure 7 is a similar view to Figures 1 and 4 but shewing the lining connected
to and adapted to be removed with the basket, and,
Figure 8 is a vertical section of a centrifugal basket with its wall formed with
undulations or corrugations.
Similar letters of reference indicate similar or corresponding parts throughout
the drawings.
a is the ordinary basket provided with the top b.
c is the lining having the undulations or corrugations d, d and adapted to fit
within the basket a as shewn in Figures 1, 2, 4, 5 and 7, or the wall of the basket
may be formed with the undulations or corrugations as in Figure 8.
The undulations or corrugations may be circumferential as shewn in Figures 1,
2, 7 and 8, or longitudinal as shewn in Figures 4 and 5, and of the shape shewn or
of other convenient shape.
c, c, are the segments into which the lining is divided in order that it may be
placed within the basket the segments being passed separately through the opening
in the top of the said basket, and connected together by bolts e, e as shewn in
Figures 1, 2 and 3. Each segment is advantageously formed with a projecting
portion adapted to fit into a corresponding recess in the next adjacent segment
as shewn in Figure 3.
Instead of the segments being passed into the basket separately they may be
joined or hinged together on pins h, has shewn in Figures 4 to 6. By removing
one of the binge pins and folding the segments into the position shewn in Figure 6,
the lining can be passed through the hole in the top of the basket and then opened
out to fit the basket, the two segments having free ends being then connected
together by the pin previously removed.
b
Figure 7 shews the lining adapted to be placed within or removed bodily from
the basket, the top 6 being connected to the said lining by rivetting or otherwise,
and to the wall of the basket by screws or bolts i, i.
Figure 8 shews the undulations or corrugations d, d formed in the wall of the
basket.
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 combination with a centrifugal basket of a corrugated lining made in
segments so that the said lining can be easily placed within or removed from the
basket, substantially as described.
2. The combination with a centrifugal basket of a corrugated lining made in
segments hinged or otherwise secured together so that they can be elosed up in
order to pass through the top cover of the centrifugal basket, substantially as
described.
3. A centrifugal basket, the top of which is removeable and connected with a
corrugated lining, substantially as and for the purpose described.
Dated this 6th day of February 1894.
Witnesses:
WILLIAM HENRY ELLIS.
JAMES GRANT STUART.
WILLIAM PRICE ABELL,
Inventor.