A NEW OR IMPROVED MILK CONDENSING APPARATUS
Year: 1872

page_text: LETTERS PATENT to Robert Berriman Stephens, of Langrish, in the
Parish of Eastmeon, in the County of Hants, for the Invention
of "A NEW OR IMPROVED MILK CONDENSING APPARATUS.”
Sealed the 29th October 1872, and dated the 3rd May 1872.
PROVISIONAL SPECIFICATION left by the said Robert Berriman
Stephens at the Office of the Commissioners of Patents, with his
Petition, on the 3rd May 1872.
I, ROBERT BERRIMAN STEPHENS, of Langrish, in the Parish of
Eastmeon, in the County of Hants, do hereby declare the nature of the
said Invention for "A NEW OR IMPROVED MILE CONDENSING APPARATUus,” to
be as follows:-
I first place twenty-four pans (made as herein-after stated), lowered
eight inches or thereabouts below each other, beginning at the top, one
not placed over each other entirely, but only to overlap each other two
inches or thereabouts at the ends. The pans are made as follows, viz.,
of galvanized iron, tin, copper, or any other metal. I may find more

page_text: suitable each pan to be eight feet (or thereabouts) long, and the highest
or top pan to be three feet (or thereabouts) wide, the next to be two feet
eleven inches (or thereabouts) wide, and each succeeding one to be one
inch, or thereabouts, less than its predecessor, down to the bottom one
which will be 1 foot 1 inch, or thereabout, wide, each pan to have a
reservoir at the bottom, about four inches deep to contain water to bo
heated by a steam coil pipe entering at the exit end of pan, or otherwise,
containing a jet of steam of about 175 degrees Fahrenheit derived from
an adjacent steam boiler, the part of the pan forming the top of the
reservoir for water, and the bottom on which the milk rests during the
process of condensation to be serrated across the whole breadth, each
indentation to be four inches or thereabouts from apex to apex, and to
be half an inch or thereabouts deep midway between the two apex, the
sides to project one and a half inch or thereabout above the points of
serrated bottom, the ends to be allowed open to permit of the milk
passing freely from the top pan to each one consecutively until it has
passed from the bottom one to be there cooled by any process deemed
most advisable during the process of condensation. The whole of the
pans are to be kept oscillating gently by any motive power, each alternate
pan to be level or nearly so when the next alternate one are raised
about eight inches in its whole length from the level. The milk is to
pass from the cistern slowly into the first or top pan, a sufficient quantity
is allowed to pass out during one oscillation of the pan to about half fill
the first serrated space in the pan, the next oscillation carries that
quantity to the next serrated space, during which time the first serrated
space has again received its proper quantity of milk from the cistern to
be condensed. By successively passing over the whole of the serrated
spaces of each pan the milk will be reduced to one quarter or thereabouts
of the bulk of pure new milk. I use sugar in various quantities, or not,
according to requirements.
The steam pipe used for the coil in the pans is required to be about
three-quarters of an inch in diameter, and to enter at the side about
three inches from the exit end of pan or otherwise, and be carried
across (and fixed to the bottom of the pan) to within two inches of the
opposite side, there to be turned in a semicircle of six inches, and again
brought back to the side at which it enters, there again to be turned in
a semicircle of six inches to the opposite side, and so repeated until it
reaches the top end at which the milk enters, it then passes from the

page_text: inside of the water reservoir to the outside and there terminates in a
small tap or cock to enable superfluous water to be blown off by the
steam from the boiler if necessary. A steam pipe passes horizontally
from the engine about four feet above the edge of the pans. Opposite
each pan at the centre is a pipe (connected with the horizontal pipe)
placed perpendicularly to within about eighteen inches of the steam pipe
coming from the pan, which is brought up from the end on the outside
of the pan to the centre of each pan and there turned up; it is there
attached to the pipe leading from the boiler by india-rubber pipes to
enable the pans to oscillate freely. Each pan is laid on a wooden or any
other frame the same length as the pan. Each frame has a bearing on
which to allow it to oscillate. The bearing is carried from the frame up
to a level of the surface, on which the milk moves to diminish the
distance, the end of the steam pipe which enters the pans would
otherwise traverse. Each pan is to be furnished with a pipe, the inside
of which diameter must be about three-quarters of an inch, in which is
to be placed a thermometer to at all times indicate the temperature of
cach pan; the said pipe is to communicate with the water contained in
each pan about midway, and not project more than about one inch or so
from the side of the pan. The pans are to oscillate lengthwise. The
egress end of the pan is to be sloped back towards the centre at an angle
of about 45 degrees from the bottom of the water reservoir, to enable
the milk to flow freely into the next pan, the ingress end to be per-
pendicular to the bottom, and be raised about half an inch above the
serrated bottom. Each pan and frame will be supported about four feet
from the ground on an iron or some other more convenient stand, on
which it may oscillate. The oscillation will be imparted to the pans by
some of the well-known methods.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Third day of May, in the year of our
Lord One thousand eight hundred and seventy-two, in the thirty-fifth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Robert Berriman Stephens, Her special licence
that I, the said Robert Berriman Stephens, my executors, administrators,
and assigns, or such others as I, the said Robert Berriman Stephens,
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 for "A NEW OR IMPROVED
MILK CONDENSING Apparatus," upon the condition (amongst others) that I,
the said Robert Berriman Stephens, my executors or administrators, by
an instrument in writing under my, or their, or one of their hands and
seals, 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 I, the said Robert Berriman Stephens, do
hereby declare the nature of my said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
I first place twenty-four pans made as herein-after stated, lowered
eight inches or thereabouts below each other, beginning at the top, onc
not placed over each other entirely, but only to overlap each other two
inches or thereabouts at the ends. The pans are made as follows, viz.,
of galvanized iron, tin, copper, or any other metal. I may find more
suitable each pan to be eight feet or thereabouts long, the highest or
top pan to be three feet or thereabouts wide, the next to be two feet
eleven inches or thereabouts wide, and each succeeding one to be one
inch or thereabouts less in width than its predecessor, down to the
bottom one, which will be one foot one inch or thereabouts wide. Each
pan to have a reservoir at the bottom about four inches deep to contain
water to be heated by a steam coil pipe entering at the exit or end of
pan, or otherwise containing a jet of about 175 degrees or thereabouts
from an adjacent steam boiler, the part of the pan forming the top of the

page_text: reservoir for water and the bottom on which the milk rests during the
process of condensation to be serrated across the whole breadth, each
indentation to be four inches or thereabouts from apex to apex, and to
be half an inch or thereabouts deep midway between the two apex, the
sides to project one and a half inch or thereabouts above the points of
serrated bottom, the ends to be allowed open to permit of the milk
passing freely from the top pan to each one consecutively until it has
passed from the bottom one to be there cooled by any process deemed
most advisable during the process of condensation. The whole of the pans
are to be be kept oscillating gently by any motive power, each alternate
pan to be level or nearly so when the next alternate ones are raised
about eight inches in its whole length from the level. The milk is to
pass from the cistern slowly into the first or top pan. A sufficient
quantity is allowed to pass out during one oscillation of the pan to about
half fill the first serrated space in the pan, the next oscillation carries
that quantity to the next serrated space, during which time the first
serrated space has again received its proper quantity of milk from the
cistern to be condensed. By successively passing over the whole of the
serrated spaces of each pan the milk will be reduced' to one quarter or
thereabouts of the bulk of pure new milk. I use sugar in various
quantities, or not, according to requirements.
The steam pipe used for the coil in the pans is required to be about
three-quarters of an inch in diameter, and to enter at the side about three
inches from the exit end of pan, or otherwise, and be carried across (and
› fixed to the bottom of the pan) to within two inches of the opposite side or
thereabouts, and again brought back to the side at which it enters, there
again to be turned in a semicircle of six inches or thereabouts to the
opposite side, and so repeated until it reaches the top end at which the
milk enters, it then passes from the inside of the water reservoir to the
outside and there terminates in a small tap or cock to enable superfluous
water to be blown off by the steam from the boiler if necessary. A
steam pipe passes horizontally from the engine about four feet above
the edge of the pans. Opposite each pan at the centre is a pipe (con-
nected with the horizontal pipe) placed perpendicularly to within about
eighteen inches of the steam pipe coming from the pan which is brought
up from the end on the outside of the pan to the centre of each pan and
there turned up, it is there attached to the pipe leading from the boiler
by india-rubber pipes to enable the pans to oscillate freely. Each
pan is laid on a wooden or any other frame the same length as the pan.

page_text: Each frame has a bearing on which to allow it to oscillate. The bearing
is carried from the frame up to a level of the surface on which the milk
moves to diminish the distance the end of the steam pipe which enters
the pans, would otherwise traverse. Each pan is to be furnished with
a pipe the inside of which diameter to be about three-quarters of an
inch, in which is to be placed a thermometer to at all times indicate the
temperature of each pan; the said pipe is to communicate with the water
contained in each pan about midway and not project more than about
one inch so as to form the side of the pan. The pans are to oscillate
lengthwise. The egress end of the pan is to be sloped back towards the 1
centre at an angle of about 45 degrees from the bottom of the water
reservoir to enable the milk to flow freely into the next pan, the egress
end to be perpendicular to the bottom and be raised about half an inch
above the serrated bottom. Each pan and frame will be supported
about four feet from the ground on an iron or some other more con- 1
venient stand on which it may oscillate. The oscillation will be imparted
to the pans by some of the well known methods.
In witness whereof, I, the said Robert Berriman Stephens have
hereunto set my hand and seal, this Second day of November,
in the year of our Lord One thousand eight hundred and seventy- 2
two.