A NEW AND USEFUL IMPROVED STEAM AND WATER PACKING FOR USE IN PACKING STUFFING BOXES OF STEAM ENGINES, MAKING JOINTS, AND OTHER LIKE PURPOSES
Year: 1868

page_text: LETTERS PATENT to William Edwin Boardman, of 29, Boulevart St.
Martin, Paris, in the French Empire, and of 53, Chancery Lane,
London, for the Invention of "A NEW AND USEFUL IMPROVED STEAM
AND WATER PACKING FOR USE IN PACKING STUFFING BOXES OF STEAM
ENGINES, MAKING JOINTS, AND OTHER LIKE PURPOSES."-A communi-
cation by Mr. William C. Selden, Engineer, residing at Brooklyn,
King's County, State of New York.
Scaled the 18th September 1868, and dated the 2nd April 1868.
5
COMPLETE SPECIFICATION filed by the said William Edwin Boardman
at the Office of the Commissioners of Patents, with his Petition
and Declaration, on the 2nd April 1868, pursuant to the 9th
Section of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
EDWIN BOARDMAN, of 29, Boulevart St. Martin, Paris, in the French
Empire, and of 53, Chancery Lane, London, send greeting.
WHEREAS I am in possession of an Invention for "A NEW AND
USEFUL IMPROVED STEAM AND WATER PACKING FOR USE IN PACKING STUFFING

page_text: BOXES OF STEAM ENGINES, MAKING JOINTS, AND OTHER LIKE PURPOSES," and
have petitioned Her Majesty to grant unto me, my executors,
administrators, and assigns, Her Royal Letters Patent for the same,
and have made solemn Declaration that it was communicated to me
by Mr. William C. Selden, Engineer, a person residing at Brooklyn,
King's County, State of New York.
NOW KNOW YE, that I, the said William Edwin Boardman, do
hereby declare that the following Complete Specification, under my
hand and scal, fully describes and ascertains the nature of the said
Invention, and in what manner the same is to be performed, in and by
the following statement, that is to say :-
The Invention consists in the combination for the above purpose
of paper pulp or other like substanco with cloth loosely worm-like,
burlaps, or with manilla, or hemp, or rubber (caoutchouc), and other
substance answering the like purpose, and with soapstone or plumbago
(black lead), or sulphate of zinc or other like mineral substance, and
with tallow or other like oleaginous substance, or with any one or
more of the above-mentioned substances.
This improved packing may be fabricated in any of the following
ways or any other suitable manner: For stufliing boxes, paper cut
to suitable size may be immersed in a bath of scapstone or plumbago
or other mineral substance powdered and stirred in water, then spread
on cloth of about the same dimensions, or upon manilla or hemp, or
spread out upon a thin shect of rubber or other substance suitable,
then rolled up compactly together into cylindrical form, then coiled
around a metallic cylinder of the same size as the piston rod the
packing is designed to encircle, then thoroughly dried, then immersed
in hot tallow until saturated with it, then cooled, drained, and cut,
so as to have in. it rings (open) ready to place in the stuffing box.
Or, the paper may be saturated with the desired mineral substance
and placed in layers with cloth, hemp, or rubber, or other suitable
substance intermediate in alternate layers, the whole when the desired
thickness has been secured pressed solidly together and dried, saturated
with hot tallow and cut in rectangular strips of the requisite size
and coiled and cut for use. Or, the paper and cloth or other
substance prepared as first described may be rolled upon a small
core of rubber and then finished as described above, taking care not

page_text: to saturate the core. The core may be either a rectangular or round
strip of rubber or a common ratan or other flexible tough wooden rod.
For making joints the paper, the cloth, or hemp, or other fibrous
substance, the mineral substance and the tallow, or any two or more
of these substances may be combined, in form flat, and in thickness
sufficient, and in breadth cut to correspond with the joint to be made.
In every case nothing is required in packing a stuffing box or making
a joint but to place packing of suitable form and dimensions in
the box or in the joint, and screw down the cap of the box, or screw
the joint firmly. together, and for tightening the packing of either
box or joint it is only necessary to tighten the screws at any time
when it may be needful. The paper and cloth combined make a
cheap durable packing. The combination of soapstone or plumbago
with the cloth and paper make the packing self-lubricating. The
addition of sulphate of zinc, one part to eighten or twenty, makes
the packing to a great extent non-combustible. Tallow adds to the
self-lubricating quality of the packing, and by preventing the steam
from penetrating and disintegrating it preserves it and makes it
durable. The rubber, or ratan, or cork, or other porous fibrous wood
used as a core makes the packing more elastic and causes it to fill
the box more perfectly. The substances used are such as neither
wear away a piston rod by friction or corrode it, and the self-
lubricating quality of the packing saves the use of oil.
Having thus described the nature of this Invention, and the manner
in which the same is to be performed, I desire it to be distinctly
understood that I do not confine myself to the precise details herein
described, as such may be varied or modified without departing from
the principle of action thereof, but I claim as new and desire to
secure by Letters Patent,-
First. A combination of paper, or compound in which paper or
paper pulp is an element, with cloth or other fibrous material,
so as to form a packing for steam engines, pumps, and other like
purposes.
Second. A combination of paper, paper pulp, or compounds, in
which one or the other form an element with vulcanised india-rubber,
so as to form a packing for steam engines, pumps, and other like
purposes.

page_text: Third. The saturation of paper packing with tallow or other like
substance to accomplish the purpose specified.
In witness whereof, I, the said William Edwin Boardman, have
set my hand and seal, this Thirty-first day of March, in the
year of our Lord One thousand eight hundred and sixty-eight.