Improvements in Apparatus for Cleansing Sugar in Centrifugal Machines.
Year: 1885

page_text: Improvements in Apparatus for Cleansing Sugar in Centrifugal
Machines.
We, CHARLES LYLE and JOHN LYLE of No 37 Mincing Lane in the City of
London, Sugar Refiners do hereby declare the nature of our invention for
"IMPROVEMENTS IN APPARATUS FOR CLEANSING SUGAR IN CENTRIFUGAL MACHINES
to be as follows:-
"
This invention has for its object improvements in apparatus for cleansing sugar.
The cleansing of the sugar is effected as at present in the centrifugal machine by
incans of steam. A perforated pipe is fixed in the basket of the machine, it has at
one end a central mouth, either immediately above or immediately below the
basket according as the basket is supported and driven from above or below-
Steam is blown into the mouth of the pipe by a jet at the end of a stationary
steam pipe. The pipe may have two or more similar branches within the basket
and each passes from the centre towards the periphery-The pipe in each of its
branches is led vertically or nearly vertically upwards near the periphery of the
basket just within the wall of sugar which the basket when loaded will contain.
The pipe is perforated on one side only namely, on the side facing the axis, the end
passes upwards and out' through the cover or top of the basket.
From this construction it follows that when the basket is running any water
which may enter the pipe with the steam does not reach the perforations but
passes along on the other side of the pipe and is delivered at the further end by a
Sinall orifice outside the basket-The dry steam meanwhile escapes from the pipe
by the perforations into the basket and serves to cleanse the sugar.
.
Qa
. 1
CARPMAEL & Co.,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Cleansing Sugar in Centrifugal
Machines.
We CHARLES LYLE and JOHN LYLE of N° 37 Mincing Lane in the City of
London Sugar Refiners 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 has for its object improvements in apparatus for cleansing sugar.
The cleansing of the sugar is effected as at present in the centrifugal machine by
means of steam. A perforated pipe is fixed in the basket of the machine, it has at
one end a central mouth, either immediately above or immediately below the
basket according as the basket is supported and driven from above or below.
Steam is blown into the mouth of the pipe by a jet at the end of a stationary
steam pipe.
The pipe may have two or more similar branches within the basket
and each passes from the centre towards the periphery. The pipe in each of its
branches is led vertically or nearly vertically upwards near the periphery of the
basket just within the wall of sugar which the basket when loaded will contain.
The pipe is perforated on one side only namely, on the side facing the axis, the end
passes upwards and out through the cover or top of the basket.
From this construction it follows that when the basket is running any water
which may enter the pipe with the steam does not reach the perforations but
passes along on the other side of the pipe and is delivered at the further end by a
sinal orifice outside the basket. The dry steam meanwhile escapes from the pipe
by the perforations into the basket and serves to cleanse the sugar.
In order that our said invention may be fully understood and readily carried
into effect we will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a vertical section and Figure 2 is a horizontal section of a centrifugal
machine with cleansing apparatus arranged in accordance with our invention; this
machine is driven from above. Figures 3 and 4 are like views showing similar
cleansing apparatus applied to a machine driven from below. In each of these
figures, a is the axis the basket with a cover b and c the casing; these parts
are of the ordinary description. d is a pipe fixed in the basket it bas a mouth d
which receives steam from a jet e. The steam supplied to this jet should be as
dry as possible and preferably a trap to intercept water is provided upon the
steam pipe. The steam passes from the mouth into the nearly vertical
branches d²d which are perforated on the inner side. Any water condensed in
the pipes is carried to the outer side of the branch pipes d d where they are
imperforated and the water escapes at the top outside the basket by the
apertures d³ d³.
The sugar is filled into the basket in the usual way and the speed of rotation
causes it to form a wall against the perforated periphery of the basket to a thick-
ness such as to extend out nearly to the branch pipes d³.

page_text: Any liquid discharged through the sides of the basket or by the apertures d³
passes out of the casing by the passage c¹ to a receiver. Or the branch pipes d²,
may be continued above the top of the basket and their ends curved and directod
outwards. Thus by this apparatus the sugar is treated with moist steam issuing
from the branch pipes d' whilst the sugar is effectually protected from contact with
water condensed in the pipes.
We would remark that we are aware of the Patent granted to Hugh William
Walker and Thomas Law Patterson No 2924 in the year 1877.
We do not claim the arrangements there described which differ essentially from
ours in that the steam admitted at the centre of the basket is at once allowed to
pass away radially in all directions. Whereas in our apparatus pipes are provided
within the basket by which the steam is retained until it is applied by allowing
it to issue from perforations on the inner side of nearly vertical branches of these
pipes.
This means of separating water from the steam is simpler than that described in
the Specification of the said prior Patent.
Also when charging tho basket the parts for the distribution of the steam do not
require to be lifted out of it.
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.) Apparatus for cleansing sugar in centrifugal machines consisting of pipes
fixed within the basket and communicating with a mouth to which steam is
supplied; such pipes having vertical or nearly vertical branches perforated on the
inner side and having outlets at their extremities for the escape of water outside
the basket substantially as described.
(2.) Apparatus for cleansing sugar substantially as described and represented by
the annexed drawings.