IMPROVEMENTS IN Centrifugal Apparatus
Year: 1875

page_text: LETTERS PATENT to Frederick James Britten and William Samuel
Barron, both of 21, Buttesland Street, in the County of Middlesex,
for the Invention of IMPROVEMENTS IN Centrifugal Apparatus,"
Sealed the 21st May 1875, and dated the 12th January 1875.
Britten and William Samuel Barron at the Office of the Com-
missioners of Patents, with their Petition, on the 12th January
1875.
We, FREDERICK JAMES BRITTEN and WILLIAM SAMUEL BARRON,
both. of 21, Buttesland Street, in the County of Middlesex, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN CENTRI-
FUGAL APPARATUS," to be as follows:-

page_text: frame we mount in a vertical position a tubular axis. This axis has
upon it a belt pulley to receive the belt by which the machine is driven.
At the upper end of the tubular axis a hemispherical cup is formed.
The basket of the machine is fixed upon an axis which extends up
through the interior of the tubular axis already mentioned, and is secured
at its upper end to a ball or hemisphere which rests in the cup already
mentioned. In this way the basket with its axis are suspended, and the
adhesion of the ball or hemisphere within the cup causes the basket to
rotate when the hollow or tubular axis is driven, and there being no
contact between the parts, except within the cup, the vibrations of the
basket will not be transmitted or at least will only be transmitted very
partially to the frame of the machine.
When it is desired to stop the basket it with its axis is lifted by means
of a fork furnished with friction pulleys, which are brought to bear upon
a disc secured upon the axis of the basket over the ball or hemisphere,
which is thus lifted out of the driving cup. The upper surface of the
disc when it is raised is brought into contact with a fixed surface of
wood or other material, and the friction against this face soon brings the
basket to rest.
SPECIFICATION in pursuance of the conditions of the Letters Patent, 2
filed by the said Frederick James Britten and William Samuel
Barron in the Great Seal Patent Office on the 30th June 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, FREDERICK
JAMES BRITTEN and WILLIAM SAMUEL BARRON, both of 21, Buttes-
land Street, in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twelfth day of January, in the year of our
Lord One thousand eight hundred and seventy-five, in the thirty-eighth
year of Her reign, did for Herself, Her heirs and successors, give and
grant unto us, the said Frederick James Britten and William Samuel a
Barron, Her special license that we, the said Frederick James Britten
and William Samuel Barron, our executors, administrators, and assigns,
or such others as we, the said Frederick James Britten and William
Samuel Barron, our executors, administrators, and assigns, should at.

page_text: any time agree with, and no others, from time to time and at all times
thereafter, during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an
Invention for " IMPROVEMENTS IN CENTRIFUGAL APPARATUS," upon the
condition (amongst others) that we, the said Frederick James Britten
and William Samuel Barron, our executors or administrators, by an
instrument in writing under our or their hands and seals, or under the
hand and seal of one of us or them should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Frederick James Britten and
William Samuel Barron, do hereby declare the nature of the said
Invention, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement
thereof, that is to say :-
This Invention has for its object improvements in centrifugal
apparatus.
We mount and drive the revolving baskets of centrifugal apparatus in
the following manner :-)
-In suitable fixed bearings on a standard or
frame we mount in a vertical position a tubular axis. This axis has
upon it a belt pulley to receive the belt by which the machine is driven.
At the upper end of the tubular axis a hemispherical cup is formed.
The basket of the machine is fixed upon an axis, which extends up
through the interior of the tubular axis already mentioned, and is
secured at its upper end to a ball or hemisphere, which rests in the cup
already mentioned. In this way the basket with its axis are suspended,
and the adhesion of the ball or hemisphere within the cup causes the
basket to rotate when the hollow or tubular axis is driven, and there
being no contact between the parts, except within the cup, the vibrations
of the basket will not be transmitted or at least will only be transmitted
very partially to the frame of the machine.
When it is desired to stop the basket it with its axis is lifted by means
of a fork furnished with friction pulleys, which are brought to bear
upon a disc secured upon the axis of the basket over the ball or

page_text: hemisphere, which is thus lifted out of the driving cup. The upper
surface of the disc when it is raised is brought into contact with a fixed
surface of wood or other material, and the friction against this face
soon brings the basket to rest.
In order that our said Invention may be most fully understood, and 5
readily carried into effect, we will proceed to describe the Drawings
hereunto annexed.
fugal machine constructed according to our Invention.
a, a, is the frame of the machine carrying in bearings a¹, a', the hollow
axis b, which at its upper end has a cup b¹ formed upon it. The hollow
axis also has formed upon it the belt pulley 62 to receive the belt by
which the machine is driven. c is the basket of the machine; it is
mounted on an axis & passing up freely through the hollow axis b, and
carrying near its upper end the hemisphere d¹. The hemisphere rests
in the cup so long as the basket is driven, and the frictional contact
between the cup and the hemisphere causes the basket to revolve. We
prefer that the bearing surface of the hemisphere should be of wood. d³
is a disc fixed on the axis d, and e is a forked lever carrying friction
rollers, which when it is desired to stop the rotation of the basket are
made to bear on the under surface of the disc, so as to lift it together
with the axis d, and the basket thereon. A further lift brings the upper
surface of the disc into frictional contact with the fixed surface e¹, and
the basket is thus rapidly brought to rest.
If preferred the disc d may be below the bearings a³, and a surface e
is then provided upon the frame a; c', c¹, are slides in the bottom of the
basket, which are withdrawn to discharge the contents, which then falls
into the truck f; y is a casing to collect the liquid thrown off from the
material under treatment.

page_text: We also claim the construction of centrifugal, machines, substantially
as described and shown in the Drawings hereunto annexed.
In witness whereof, we, the said Frederick James Britten and
William Samuel Barron, have hereunto set our hands and seals,
this Fifteenth day of June, in the year of our Lord One thousand'
eight hundred and seventy-five.
F. J. BRITTEN.
(L.S.)
WM. SAM BARRON. (L.s.)