Improvements in Centrifugal Machines.
Year: 1895

page_text: Date of Application, 3rd May, 1895
Complete Specification Left, 1st Feb., 1896-Accepted, 7th Mar., 1896
PROVISIONAL SPECIFICATION.
Improvements in Centrifugal Machines.
I, JOHN LAIDLAW, of the Firm of Watson Laidlaw & Company, of 98 Dundas
Street, South, in the County of the City of Glasgow, North Britain, Engineers,
do hereby declare the nature of this invention to be as follows :-
This invention relates to that class of centrifugal machines or hydro extractors
which are driven from above and wherein the dried material is discharged through
an annular opening in the bottom of the basket.
The object of this invention is to dispense with the valve or cover which is
ordinarily employed in such machines, and which requires to be raised in order to
discharge the sugar or other solid material.
In Specification No. 4498 of 1894 I have described one method of dispensing
with the valve or cover by providing a cone or disc fixed upon the spindle
upon which the sugar falls and is thrown by centrifugal force to the sides of the
basket.
According to my present invention I dispense with the cone or disc attached to
the spindle and I provide an inclined or vertical pipe or open shoot for feeding the
sugar into the machine. This pipe or shoot is constructed so as to discharge the
sugar or other material in a direction towards the shell of the basket. The sugar
or other material falls from some height down this vertical feed pipe, so that on
being discharged through the nozzle it has acquired sufficient velocity to carry it
out against the side of the basket.
Dated this 2nd day of May 1895.
BOTTOMLEY & LIDDLE,
154 St. Vincent Street, Glasgow, Applicant's Agents.
Improvements in Centrifugal Machines,
I, JOHN LAIDLAW, of the Firm of Watson, Laidlaw & Company, of 98, Dundas.
Street, South in the County of the City of Glasgow, North Britain, Engineers,
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 :-
My invention relates to that class of centrifugal machines or hydro extractors
which are driven from above and wherein the dried material is discharged through
an annular opening in the bottom of the basket.
The object of this invention is to dispense with the valve or cover which is
ordinarily employed in such machines and which requires to be raised in order to
discharge the sugar or other solid material.
In Specification No. 4498 of 1894 I have described one method of dispensing
with the valve or cover by providing a cone or disc fixed upon the spindle upon
which the sugar falls and is thrown by centrifugal force to the sides of the
basket.

page_text: According to my present invention I dispense with the cone or disc attached to
the spindle, and I provide an inclined or vertical pipe or open shoot for feeding the
sugar into the machine. This pipe or shoot is constructed so as to discharge the
sugar or other material in a direction towards the shell of the basket. The sugar
or other material falls from some height down this vertical feed pipe, so that on
being discharged through the nozzle it has acquired sufficient velocity to carry it
out against the side of the basket.
My invention is illustrated on the accompanying sheet of drawing, of which A is
the revolving basket: B is a pipe for feeding the sugar into the machine: B1 is
another pipe slightly larger than the pipe B, supported on a sleeve or bush C
attached to any convenient fixed part of the machine. The pipe B 1 can be slided
up on the outside of the pipe B in order to discharge the sugar on to the side of
the basket in a wall of uniform thickness. The sugar or other material is brought
down the pipe B from a sufficient height, so that on being discharged from the
opening it will have acquired sufficient velocity to carry it out against the side of
the basket. The basket is charged while revolving, and as soon as the sugar or
other material reaches the side it is carried round with 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 :-
The improvements, in that class of centrifugal machines which are suspended
and driven from above and have the dried material discharged through a central
opening in the bottom of the basket, consisting in the combination of a basket
without valve or cover in the bottom discharge opening and an adjustable pipe or
shoot for feeding the sugar or other material into the machine, substantially
as and for the purposes hereinbefore described and illustrated on the accompanying
sheet of drawings.
Dated this 31st day of January 1896
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.