Year: 1888

page_text: I, JOHN LAIDLAW of the firm of Watson Laidlaw and Company of 98 Dundas
Street, Kingston, Glasgow, in the Counties of Lanark and Renfrew, North Britain,
Engineer do hereby declare the nature of this invention to be as follows:-
This Invention, which relates to improvements in the construction of Weston's
centrifugal machines, relates to that class of such machines which are driven from
above, and wherein the dried material is discharged through an annular opening in
the bottom of the revolving basket. To enable this opening to be enlarged to a
diameter equal or almost equal to the diameter of the opening in the mouth of the
basket without interfering with the fixed position of the feeding spout, the lower part
of the spindle which carries the basket has upon it a boss whose upper part is
considerably larger than the diameter of the spindle. Thus the upper part of the
discharge valve in order to fit on this boss or enlargement is necessarily of a diameter
equal thereto, it follows that so soon as the said valve is lifted to discharge the
basket of its contents there is a sufficient amount of opening or space between it and
the spindle to enable the valve to be easily removed sideways and upwards past the
charging spout or other obstruction.
In place of employing an enlarged boss as hereinbefore described the spindle itself
may be enlarged at the part which would otherwise be occupied by the boss.
Tind this 17th day of November 1888.
ST. JOHN V. DAY,
115, St. Vincent Street, Glasgow,
Petitioner's Agent.

page_text: 1, JOHN LAIDLAW of 98 Dundas Street, Kingston, Glasgow, in the Counties of
Lanark and Renfrew, North Britain, 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:—
My Invention, which relates to improvements in the construction of Weston's
centrifugal machines, relates to that class of such machines which are driven from
above and wherein the dried material is discharged through an annular opening in the
bottom of the revolving basket. To onable this opening to be enlarged to a diameter
equal or almost equal to the diameter of opening in the mouth of the basket without
interfering with the fixed position of the feeding spout, the lower part of the spindle
which carries the basket has upon it a boss whose upper part is considerably larger
than the diameter of the spindle. Thus the upper part of the discharge valve in
order to fit on this boss or enlargement is necessarily of a diameter equal thereto, it
follows that so soon as the said valve is lifted to discharge the basket of its contents,
there is a sufficient amount of opening or space between it and the spindle to
enable the valve to be easily removed sideways and upwards past the charging spout
or other obstruction.
In place of employing an enlarged boss as hereinbefore described, the spindle
itself may be enlarged at the part which would otherwise be occupied by the boss.
In order that my said Invention may be properly understood and readily carried
into effect, I have hereunto appended one explanatory sheet of drawing which is a
vertical section of part of Westons centrifugal machine.
The spindle A, has a boss B, C, attached to it. The upper part B, of said boss is
of considerably larger diameter than that of the spindle. The discharge valve D, fits
on to this boss at its upper part. The diameter of the hole in this valve is thus
considerably larger than the diameter of the spindle. When it is desired to discharge
the contents of the basket, the valve is lifted up past the boss on the spindle. The
conical discharge valve can then be tilted as shown in dotted lines, so as to pass clear
of the charging spout instead of as previously fitting on the vertical spindle, and so
not admitting of being tilted as described..

page_text: Having now particularly described and ascertained the nature of my said Inven
tion and in what manner the same is to be carried into effect, I declare that what
I claim is :-
In Weston's centrifugal machines, the providing of an enlargement on the spindle
of the machine which allows of the hole in the valve being considerably larger
than the diameter of the spindle, for the purpose set forth and shewn on the annexed
drawing.