IMPROVEMENTS IN THE TREATMENT OF GUMS AND OF OILS SO AS TO RENDER THEM MORE SUITABLE FOR THE PRODUCTION OF VARNISHES.
Year: 1878

page_text: LETTERS PATENT to Frederick Settle Barff, of Kilburn, in the County of
Middlesex, Professor of Chemistry, for the Invention of "IMPROVEMENTS IN
THE TREATMENT OF GUMS AND OF OILS SO AS TO RENDER THEM MORE
SUITABLE FOR THE PRODUCTION OF VARNISHES.".
PROVISIONAL SPECIFICATION left by the said Frederick Settle Barff at the
Office of the Commissioners of Patents on the 16th April 1878.
FREDERICK SETTLE BARFF, of Kilburn, in the County of Middlesex, Professor
of Chemistry. "IMPROVEMENTS IN THE TREATMENT OF GUMS AND OF OILS So
AS TO RENDER THEM MORE SUITABLE FOR THE PRODUCTION OF VARNISHES.
This Invention relates to the treatment of gums and of oils so as to render them
more suitable for the production of varnishes, and consists in the employment for
the purposes of heating, melting, and incorporating of superheated steam at specific
temperatures, applied externally or by means of pipes or coils placed or circulating
in or amongst the gums or oils to be heated.
In carrying out this Invention, the gums or oils contained by preference in a
cast-iron vessel or pan, the exterior and interior of which has been previously sub-
mitted to the process known as Barff's process for the protection of iron surfaces
from corrosion, for which I obtained Letters Patent, dated the Twenty-ninth day of
February 1876, and numbered 862, are submitted to the action of superheated
steam in the manner before mentioned, and by reason of the employment of super-
heated steam, or of steam superheated to any desired point, the desired temperature
necessary to effect the heating, melting, or incorporating of the gums or oils may be
established and be maintained, so that a definite amount of heat may be applied,
and all those inconveniences arising from the employment of an open fire or other
sources of heat be avoided.

page_text: In order to determine and to regulate the degree or degrees of temperature which
are to be employed, I prefer to use either fusible alloys of metals, paraffin, or sul-
phuric acid, the employment of which will be dependent upon the temperature it is
desired to obtain.
Another part of my Invention consists in so arranging the heating or melting
vessel, pan, or apparatus upon a scalebeam or balance, in order that the original
and subsequent weight of the contents may be ascertained without removing the
apparatus to a weighing machine distant from the source of heat.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frederick Settle Barff in the Great Seal Patent Office on the 15th
October 1878.
FREDERICK SETTLE BARFF, of Kilburn, in the County of Middlesex, Professor
of Chemistry. "IMPROVEMENTS IN THE TREATMENT OF GUMS AND OF OILS SO
AS TO RENDER THEM MORE SUITABLE FOR THE PRODUCTION OF VARNISHES."
This Invention relates to the treatment of gums and of oils so as to render them
more suitable for the production of varnishes, and consists in the employment for
the purposes of heating, melting, and incorporating of superheated steam at specific
temperatures, applied either externally or by means of pipes or coils placed or
circulating in or amongst the gums or oils to be heated.
In carrying out this Invention, the gums or oils contained by preference in a
cast-iron vessel or pan, the exterior and interior of which has been previously sub-
mitted to the process known as Barff's process for the protection of iron from
corrosion, for which I obtained Letters Patent, dated the Twenty-ninth day of Feb-
ruary, One thousand eight hundred and seventy-six, are submitted to the action of
superheated steam in the manner before mentioned, and by reason of the employ-
ment of superheated steam, or of steam superheated to any desired point, the desired
temperature necessary to effect the heating, melting, or incorporating of the gums or
oils may be established and be maintained, so that a definite amount of heat may
,be applied, and all those inconveniences arising from the employment of an open
fire or other sources of heat be avoided.
In order to determine and to regulate the degree or degrees of temperature which
are to be employed, I prefer to use either fusible alloys of metals, paraffine, or sul-
phuric acid, the employment of either of which will be dependent upon the tempe-
rature it is desired to obtain.
Another part of my Invention consists in so arranging the heating or melting pan
or apparatus upon or in connection with a scale or balance, in order that the original
and subsequent weight of the contents may be ascertained without removing the
apparatus to a weighing machine distant either from the source of or application of
heat.
Having now described and particularly ascertained the nature of my said
Invention, and the manner in which the same is or may be used or carried into

page_text: effect, I would observe in conclusion that what I consider to be novel and
original, and therefore claim as the Invention secured to me by the herein-before
in part recited Letters Patent is,―
First. The application of superheated steam for the purposes herein-before
mentioned, together with the mode or means of determining and regulating the
temperature to be employed for such purposes, as herein-before described.
Second. The arranging the apparatus to be employed for the purposes herein-
before mentioned upon or in connection with a balance, substantially in the manner
herein-before described.
In witness whereof, I, the said Frederick Settle Barff, have to this my Speci-
fication set my hand and seal, this Fourteenth day of October, One thousand
eight hundred and seventy-eight.
FRED. S. BARFF. (L.S.)