AN IMPROVED MODE OF AND APPARATUS FOR REMOVING THE CONTENTS FROM CENTRIFUGAL SUGAR MACHINES
Year: 1867

page_text: LETTERS PATENT to William Robert Lake, of the "International Patent
Office," No. 8, Southampton Buildings, Chancery Lane, in the County
of Middlesex, Consulting Engineer, for the Invention of "AN IMPROVED
MODE OF AND APPARATUS FOR REMOVING THE CONTENTS FROM CENTRIFUGAL
SUGAR MACHINES." -A communication from abroad by Helem Merrill, of
the City, County, and State of New York, United States of America.
Sealed the 15th October 1867, and dated the 23rd April 1867.
PROVISIONAL SPECIFICATION left by the said William Robert Lake at
the Office of the Commissioners of Patents, with his Petition, on the
23rd April 1867.
I, WILLIAM ROBERT LAKE, of the "International Patent Office," No: 8,
Southampton Buildings, Chancery Lane, in the County of Middlesex, Con-
sulting Engineer, do hereby declare the nature of the said Invention for "AN
IMPROVED MODE OF AND APPARATUS FOR REMOVING THE CONTENTS PROM CENTRIFUGAL
SUGAR MACHINES," a communication, to be as follows:-
When a centrifugal machine has performed its work on a charge of sugar
or other material, it has hitherto been necessary to stop its motion in order to
empty it by hand. The time involved in discharging is usually much greater
than that required for operating upon the charges, and the machines are more
injured by the violence to which they are generally subjected in hastily

page_text: shovelling the sugar from the interior of the sieve than by the natural opera-
tion of the machine when in motion. The object of my Invention is to avoid
this objectionable loss of time and rough handling.
The said Invention consists in the employment of a receptacle which may
be placed in the interior of the machine and supported by the stationary
outer case, so that it also remains stationary while the rotation of the sieve
around it causes the charge to be scraped off by projecting edges and deposited
within the receiver, with which it may be lifted from the machine without
requiring the stoppage of the latter. The receiver is made in sections which
are hung on pivots or hinges, so that their outer edges may be pressed upon
the revolving sugar and sieve in an angular direction opposite to that of the
motion, in such a manner that the sugar is scraped from the sieve and carried
within the receiver, where it remains until removed from the machine. The
said sections or scrapers are connected to a handle or lever, by which they
may all be pressed simultaneously upon the inner surface of the revolving
sieve, and they should be so hung that they will yield automatically in the
event of any undue strain caused, for instance, by the catching of an edge or
corner against a torn portion of the sieve. By using three sections or
scrapers at uniform distances apart the action of the strain upon the sieve will
be uniformly distributed. When the power is applied beneath the machine I
prefer to connect the sections and deposit and lift them together, but when
the power is applied above the machine the sections may be separated, so that
they work on each side. or between the frames. In some cases the receiver
may be made in the form of a single cylindrical vessel with scrapers projecting
through suitable slots, and bearing upon the charge and surface of the sieve in
an angular direction opposed to the motion of the same.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Robert Lake in the Great Seal Patent Office on the
22nd October 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the "International Patent Office," No. 8, Southampton
"Buildings, Chancery Lane, in the County of Middlesex, Consulting Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of April, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirtieth year of Her

page_text: reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said William Robert Lake, Her special licence that I, the said William
Robert Lake, my executors, administrators, and assigns, or such others as I,
the said William Robert Lake, my executors, administrators, and assigns,
should at 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 of "AN
IMPROVED MODE OF AND APPARATUS FOR REMOVING THE CONTENTS FROM CENTRI-
FUGAL SUGAR MACHINES," upon the condition (amongst others) that I, the said
William Robert Lake, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should par-
ticularly 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Robert Lake, 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, reference being had to the accompanying Sheet of
Drawings forming a part of this Specification:-
When a centrifugal machine has performed its work on a charge of sugar
or other material, it has hitherto been necessary to stop its motion in order to
empty it by hand. The time involved in discharging is usually much greater
than that required for operating upon the charges, and the machines are more
injured by the violence to which they are generally subjected in hastily
shovelling the sugar from the interior of the sieve than by the natural operation
of the machine while in motion. The object of my Invention is to avoid this
objectionable loss of time and rough handling.
The said Invention consists in the employment of a receptacle which may
be placed in the interior of the machine and supported by the stationary outer
case, so that it also remains stationary while the rotation of the sieve around it
causes the charge to be scraped off by projecting edges and deposited within
the receiver, with which it may be lifted from the machine without requiring
the stoppage of the latter. The receiver is made in sections which are hung
on pivots or hinges, so that their outer edges may be pressed upon the revolving
sugar and sieve in an angular direction opposite to that of the motion, in such
a manner that the sugar is scraped from the sieve and carried within the
receiver, where it remains until removed from the machine. The said sections

page_text: or scrapers are connected to a handle or lever, by which they may all be
pressed simultaneously upon the inner surface of the revolving sieve, and they
should be so hung that they will yield automatically in the event of any undue
strain caused, for instance, by the catching of an edge or corner against a torn
portion of the sieve. By using three sections or scrapers at uniform distances
apart the action of the strain upon the sieve will be uniformly distributed.
DESCRIPTION OF THE DRAWINGS.
Figure is a sectional elevation of a centrifugal machine, showing the
application of the said Invention or discharge in position for use; Figure 2 is
a plan of the same. The discharger is drawn with a single scraper or section
projecting from the central receptacle.
The receptacle a is placed within the sieve of the machine with its sup-
porting arms b resting between lugs upon the outer stationary case, and it is
furnished with an eye c or other suitable means by which it may be hoisted or
lifted out. The scraper or section d is hung by sliding hinges on the receptacle
'so that its outer edge may be projected in conformity with the angular action
of the levers connected with the handle e. When the central receptacle is pro-
vided with more than one scraper or section the levers by which they are
projected may be connected to work with one handle. The discharger is
placed in the machine without interfering with its motion, and when the
section or scraper is projected against the sugar it is scraped from the sieve,
and carried within the receptacle, with which it may be lifted from the
machine. The cutting edges of the scrapers should be of steel or other
durable material, and need not be brought in contact with the sieve, the last
remnant of the sugar being removed by a small scraper of horn operated in a
similar manner by a lever, which also causes it to move up and down as may
be desired as well as to project outwards. When the power is applied
beneath the machine I prefer to connect the sections and deposit and lift them
together, but when the power is applied above the machine the sections may
be separated so that they work on each side or between the frames. In some
cases the receiver may be made in the form of a single cylindrical vessel with
scrapers projecting through suitable slots and bearing upon the charge
and surface of the sieve in an angular direction opposed to the motion of the
same.
Having thus fully described the said Invention as communicated to me by my
foreign correspondent, and described the manner in which I prefer to carry
the said Invention into effect, I hereby state that I do not confine myself to
the details herein set forth as they may be varied to suit the different

page_text: patterns of centrifugal machines in use; but I claim the stationary and
removable scrapers and receptacles by which a centrifugal machine may be
discharged when in motion, substantially as described.
In witness whereof, I, the said William Robert Lake, have hereunto set
my hand and seal, this Twenty-second day of October, in the year of
our Lord One thousand eight hundred and sixty-seven.
WILLIAM ROBERT LAKE. (L.S.)
Witness,
THO³. N. PALMER,
Clerk to Messrs. Haseltine, Lake, & Co.,
8, Southampton Buildings, W.C.