IMPROVEMENTS IN TREATING FATTY MATERIALS IN COMBINATION WITH VARIOUS KINDS OF PITCH, ALKALIES, AND OIL, ALSO IN THE TREATMENT OF ANIMAL, VEGETABLE, AND MINERAL OILS FOR LUBRICATING PURPOSES
Year: 1872

page_text: PROVISIONAL SPECIFICATION left by Robert Hornby at the Office
of the Commissiouers. of Patents, with his Petition, on the 19th
November 1872.
I, ROBERT HORNBY, of Marchmont Street, in the County of
Middlesex, Manufacturer, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN TREATING FATTY MATERIALS IN COMBINATION
WITH VARIOUS KINDS OF PITCH, ALKALIES, AND OIL, ALSO IN THE TREATMENT OF
ANIMAL, VEGETABLE, AND MINERAL OILS FOR LUBRICATING PURPOSES," to be as
follows:-
This Invention relates to the treating of fatty materials for producing
an antifriction grease or composition for lubricating purposes, applicable
to railway carriage and other axles. To make the composition I take
nine hundredweight of fat or oil, four hundredweight of alkali in
solution, either caustic or otherwise, and eight hundredweight of various
kinds of pitch; these ingredients I place in a pan, copper, boiler, or
other vessel on a fire, or I may use steam for heating the ingredients
until it arrives at the temperature of 212 Fahrenheit, gradually
increasing up to 330 degrees Fahrenheit, and at or near this point of

page_text: temperature I keep for about four hours or more the before named
ingredients. I may treat separately and afterwards amalgamate the
said ingredients best suited for lubricating purposes, as some of the
lubricants I shall make of a thin or soft substance, and others of a
thicker or hard substance; and I shall also make a composition adapted
for waggons, collieries, wire, ropes, cloth, leather, and for other purposes.
I shall take animal, vegetable, and mineral oils, fats, and various kinds
of pitch, lime, steatite, and fuller's earth, for making the said com-
position, with less regard to the lubricating properties the treatment will
be similar to that herein-before described; the lime, steatite, and fuller's
earth I shall reduce to a powder by means of slacking, washing,
grinding, or otherwise, previous to amalgamating them with the other
ingredients before named.
When treating of animal, vegetable, and mineral oils for lubricating
purposes, I shall take about equal quantities of the said oils and subject
the same to heat by placing the oils in a pan, copper, boiler, or other
suitable vessel, on or over a fire, or I may use steam, which I prefer for
heating the said oils, until the heat arrives at a temperature of one
hundred and eighty degrees Fahrenheit, gradually increasing up to
about two hundred degrees of heat; I then add four pounds of caustic
soda in a liquid form at about 13° Boune to about every four gallons of
the oil under treatment, the heat is then increased up to two hundred
and twelve degrees Fahrenheit; all scum or refuse being removed the
ingredients are allowed to subside, the oil is then drawn off and placed
in hair or other filtering bags for the purposes required.
The combination of materials and the treatment above described, will
produce good results, but I do not limit my Invention to the exact
proportions or the precise treatment. set forth.