A COMPOSITION FOR COATING METALS AND OTHER SUBSTANCES FOR VARIOUS PURPOSES
Year: 1859

page_text: LETTERS PATENT to Jonathan Harrington Green, of Christiansburg, in
the County of Wapello and State of Iowa, in the United States of
America, for the Invention of "A COMPOSITION FOR COATING METALS AND
OTHER SUBSTANCES FOR VARIOUS PURPOSES."
Sealed the 20th April 1860, and dated the 21st October 1859.
PROVISIONAL SPECIFICATION left by the said Jonathan Harrington
Green at the Office of the Commissioners of Patents, with his Petition,
on the 21st October 1859. .
I, JONATHAN HARRINGTON GREEN, of Christiansburg, in the County of
Wapello and State of lowa, in the United States of America, do hereby
declare the nature of the said Invention for "A COMPOSITION FOR COATING
METALS AND OTHER SUBSTANCES FOR VARIOUS PURPOSES," to be as follows:-
This composition is made by combining vegetable oil, a solution of india-
rubber or gutta percha, an absorbent or earthy matter, and a gritty or silicious
substance,either with or without the addition of other gums than thoseabove
named, and subjecting the same to a sufficient heat to cure and harden it
properly for use. The proportions of the ingredients used are nearly or quite as
follows:-Six ounces of flour of emery, four ounces of finely-pulverized pumice
stone, two ounces of corundum, two ounces of Paris white, two ounces of mag-
nesia, and one ounce of lamp black are thoroughly incorporated by grinding or
otherwise with three ounces of india-rubber or gutta percha cement such as is
Price 8d1

page_text: usually used for joining articles of india-rubber or gutta percha; one pint of
linseed oil, half a pint of oil of turpentine, and one-fourth of a pint of the slow
varnish very commonly used by japanners in their operations. The mixture
thus prepared is applied to the articles to be coated and dried or cured
upon them, by a continued heat of about two hundred degrees (Fahrenheit)
till it becomes hard and firm.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Jonathan Harrington Green in the Great Seal Patent
Office on the 20th April 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JONATHAN
HARRINGTON GREEN, of Christiansburg, in the County of Wapello and State
of Iowa, in the United States of America, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-first day of October, in the year of our Lord
One thousand eight hundred and fifty-nine, in the twenty-third year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Jonathan Harrington Green, Her special licence that I, the said
Jonathan Harrington Green, my executors, administrators, and. assigns, or
such others as I, the said Jonathan Harrington Green, 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, au Invention for "A COMPOSITION FOR COATING METALS AND
OTHER SUBSTANCES FOR VARIOUS PURPOSES," upon the condition (amongst others),
that I, the said Jonathan Harrington Green, my executors or administrators,
by an instrument in writing under iny 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 Jonathan Harrington Green, 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 :-
My said Invention consists in an improved elastic composition for covering

page_text: metals, hard wood, or any other substances which from their nature are
capable of receiving it, and which may also be used for coating the inside of
vessels and water pipes, and for luting in chemical experiments, &c. This
composition is made as follows:-I take six ounces of emery, four ounces of
pumice stone, two ounces of corundum, two ounces of Paris white, one ounce
of lamp black, two ounces of magnesia, three ounces of india-rubber cement
or gutta percha cement, consisting of a saturated solution of india-rubber in
camphine, or a solution of gutta percha of similar strength in any substance
which will properly dissolve it, one pint of linseed oil, one-half pint of tur-
pentine, and one gill of slow japanner's varnish. I grind all these together in
one body so as to bring them to the consistence of oil paint. Should the
composition, when mixed up and ground, be too thick, I add so much spirits
of turpentine as will be necessary to bring it to the desired consistence. I
have found the foregoing proportions, however, to answer very well for a thin
coat. This composition, when so prepared, may be applied by submergence or
otherwise to the surface of any substance capable of receiving it, and when so
applied, I subject it to the influence of a sufficient degree of heat to dry it,
varying from one hundred and forty to three hundred degrees Fahrenheit,
although I am not certain that exposure to the solar rays would not effect the
same purpose. The hardness and elasticity of this composition (qualities
which are not combined in any other varnish or enamel, at least not to the
same degree) render it capable of being applied to many purposes to which
varnish or enamel cannot be applied so as to produce the same useful effect,
among which may be enumerated the following:-1st. If applied to the
surfaces of a thin sheet of metal, say iron or copper, it renders the metal
capable of being used as a school slate, its peculiar hardness causing it to act
effectively on a common slate pencil; if the metallic sheet be large enough,
it may be used as a black board. 2nd. If a coating of it be applied to the
inside of a vessel composed of different pieces put together, say, for instance,
a common tin can, it is an effectual preventive of leakage. 3rd. If the lid of
the same vessel be placed in position, and luted with this composition, it
renders the vessel perfectly air-tight, thereby furnishing a desideratum in
forming air-tight cans for the preservation of meats for long sea voyages,
without resorting to the tedious and very often inefectual process of soldering.
4th. Its toughness and elasticity are such that when applied to the surface of
a thin metallic plate, the plate may be bent and straightened many times in
successior without separating in the smallest degree the parts of the compo-
sition. 5th. Its insolubility in water renders it peculiarlyapplicable for coating
the inside of lead or iron water pipes, thereby preventing the water from

page_text: getting into contact with the metal, by which means the chemical action of
the former upon the latter is rendered impossible, and the water is preserved
in a state of purity. 6th. It is the most perfect lute yet discovered for uniting
the different portions of chemical apparatus. 7th. It is not acted upon by
acids, and will not be affected by any degree of heat short of that which would
be required to vitrify it. Sth. Its toughness makes it a peculiarly proper
substance for coating the backs of large maps or drawings, thereby doing away
with the necessity of mounting them on linen. The composition, when made
as described above, is a full black; but should other colors be desired, as they
may be for various purposes, the lamp black may be omitted, and any proper
pigment to give the required tint, and that will not change in the process of
baking, on may be substituted. I claim the composition described.
In witness whereof, I, the said Jonathan Harrington Green, have here-
unto set my hand and seal, the Twenty-third day of March, One
thousand eight hundred and sixty.
JONATHAN HARRINGTON GREEN. (L.S.)