AN IMPROVED RUBBER COMPOUND FOR STEAM PACKING AND OTHER PURPOSES." FOR STEAM PACKING AND OTHER PURPOSES." PROALATION
Year: 1871

page_text: LETTERS PATENT to Mosher A. Sutherland, of Passaic, in the County
of Passaic, and State of New Jersey, United States of America,
Manufacturer, for the Invention of “AN IMPROVED RUBBER COMPOUND
FOR STEAM PACKING AND OTHER PURPOSES."
FOR STEAM PACKING AND OTHER PURPOSES."
PROVISIONAL SPECIFICATION left by the said Mosher A. Sutherland
at the Office of the Commissioners of Patents, with his Petition,
on the 10th March 1871.
I, MOSHER A. SUTHERLAND, of Passaic, in the County of Passaic,
and State of New Jersey, United States of America, Manufacturer,
do hereby declare the nature of the said Invention for "AN IMPROVED
RUBBER COMPOUND FOR STEAM PACKING AND OTHER PURPOSES," to be as
follows:-
My Invention consists in the use of massive steatite or foliated or
fibrous silicates or bisilicates (particularly the substance known as
asbestos), either of which I mix in suitable proportions herein-after
stated, with India-rubber or caoutchouc and sulphur, or other vulcanizing

page_text: For making hose, belting, and other like articles; I cover canvas or
other fabric with the above mixture, and vulcanize it. A core of fibrous
asbetos (not disintegrated) may be covered with this rubber-coated
fabric, whereby another form of steam packing is produced.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Mosher A. Sutherland in the Great Seal Patent
Office on the 8th September 1871.
.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MOSHER
A. SUTHERLAND, of Passaic, in the County of Passaic, and State of New
Jersey, United States of America, Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty. Queen Victoria, by Her.
Letters Patent, bearing date the Tenth day of March, in the year of
our Lord One thousand eight hundred and seventy-one, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Mosher A. Sutherland, Her special
licence that I, the said Mosher A. Sutherland, my executors, admi-
nistrators, and assigns, or such others as I, the said Mosher A. Sutherland,
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 "AN
IMPROVED RUBBER COMPOUND FOR STEAM PACKING AND OTHER PURPOSES," upon
the condition (amongst others) that I, the said Mosher A. Sutherland
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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Mosher A. Sutherland, 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 (that is to say) :-
My Invention consists in the use of foliated or fibrous silicates or
massive steatite (preferably the material or substance known as asbestos)

page_text: compounded in suitable proportions, as herein-after stated, with caout-
chouc or india-rubber and sulphur, or other vulcanizing material, and
vulcanized in the ordinary manner, whereby I produce a vulcanized
compound which is a very poor conductor of heat, not easily decomposed,
disintegrated, softened, or otherwise injured or destroyed by steam or
other agents which it may be or become necessary to subject it to the
action of. The compound is therefore well adapted for use as steam
packing, hose, belting, or for other similar purposes.
To produce a compound of sufficient hardness and durability to
answer under a great variety of conditions, as steam packing, I find
that the following proportions of the ingredients named will answer,
to wit,-

page_text: As the proportion of these last-mentioned substances in the compound
in increased or diminished, the resulting product is made harder or less
hard. I do not therefore limit myself to any particular proportions of
the several ingredients, nor to the manner of mixing them together, nor
to the pressure of steam or degree of heat used for vulcanizing the
compound.
For making hose, belting, or similar articles I cover canvas or other
fabric with the compound and vulcanize it, and by coating or covering
a core of fibrous asbestos (not disintegrated) with this rubber-coated
fabric I produce another form of steam packing.
Having thus fully described my Invention and the manner in which
it is to be employed I claim,-
First. The use of asbestos or other fibrous or foliated silicates or
bisilicates or massive steatite in combination with caoutchouc and
sulphur or other vulcanizing agent for the purpose and substantially in
the manner herein-before set forth.
Secondly. In combination with the compound thus produced canvas
or other fabric for the purpose specified.
Thirdly. In combination with the compound thus produced fibrous
asbestos (not disintegrated) for the purpose herein-before set forth.
In witness whereof, I, the said Mosher A. Sutherland have here-
unto set my hand and seal, this Twenty-second day of July,
A.D. 1871.