AN IMPROVED PACKING FOR STEAM AND OTHER ENGINES OR MACHINES
Year: 1871

page_text: LETTERS PATENT to Michael John Haines, of Barton Street, in the
County of Gloucester, for the Invention of "AN IMPROVED PACKING
FOR STEAM AND OTHER ENGINES OR MACHINES."
Sealed the 23rd January 1872, and dated the 23rd September 1871.
PROVISIONAL SPECIFICATION left by the said Michael John Haines
at the Office of the Commissioners of Patents, with his Petition,
on the 23rd September 1871.
I, MICHAEL JOHN HAINES, of Barton Street, in the County of
Gloucester, do hereby declare the nature of the said Invention for "AN
IMPROVED PACKING FOR STEAM AND OTHER ENGINES OR MACHINES," to be as
follows:-
The Invention has for its object the manufacture of a self-lubricating
packing for steam and other engines or machines.
For this purpose I employ a rod of any suitable diameter; I then
take a strip of canvas, leather, or other suitable strong and porous

page_text: material of the required width, and wind it upon the rod from end to
end, so that each thickness of canvas or other suitable material may
overlap that previously wound upon the rod. Any suitable known
cement may be employed to bind the different thicknesses of canvas
or other suitable material firmly together. I next remove the canvas
or other suitable material, which now resembles a hollow rope, from the
aforesaid rod, and fill the hollow of said rope with melted tallow or
other suitable known lubricating material, and after such lubricating
material has cooled and become hardened, the packing is ready to be
used in the manner usually adopted in packing steam and other engines
or machines.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Michael John Haines in the Great Seal Patent
Office on the 22nd March 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MICHAEL
JOHN HAINES, of Barton Street, in the County of Gloucester, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of September, in the
year of our Lord One thousand eight hundred and seventy-one, in the
thirty-fifth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Michael John Haines, Her special
licence that I, the said Michael John Haines, my executors, adminis-
trators, and assigns, or such others as I, the said Michael John Haines,
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 PACKING FOR STEAM AND OTHER ENGINES OR MACHINES," upon
the condition (amongst others) that I, the said Michael John Haines,
my exccutors 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
.

page_text: 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 Michael John Haines, 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 thereof, reference being had to the Drawings
hereunto annexed, that is to say :-
The Invention has for its object the manufacture of an improved self-
lubricating packing for steam and other engines or machines.
For this purpose I employ a rod of any suitable material and diameter
to suit the size of the packing it is required to produce; I then take a
strip of canvas, leather, or other suitable strong and porous material of
the required width, and wind it upon the rod from end to end; so that
cach thickness or coil of canvas or other material employed may overlap
that previously wound upon the rod. Any suitable cement may be
applied by a brush to the canvas or other material employed to bind the
different thicknesses or coils thereof firmly together. I next remove the
canvas or other material employed, which now somewhat resembles a
hollow rope from the aforesaid rod, and fill the hollow of the said rope
with melted tallow or other suitable lubricating material, and after such
lubricating material has cooled and become hardened the packing is
ready to be used in the manner usually adopted for packing steam and
other engines or machines.
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г
At Figure 1 I have shown a side view, and at Figure 2 an end view of
a portion of a packing constructed as above described, of the diameter of
five-eighths of an inch. It will be seen that in this case the strip of
canvas or other material employed to form the packing is one inch and
a half in width, and that the thicknesses or coils thereof overlap each
other to the extent of one inch and an eighth. It is however evident
that these proportions may be varied as may be desired.
By this mode of constructing self-lubricating packing I am enabled to
employ any description of woven or other material that may be suitable
for the purpose, whilst the packing produced is better and cheaper than
that hitherto made.
Having thus described the nature of my said Invention and the
mode in which I carry the same into effect, I would have it understood.

page_text: that what I do claim is, the production of an improved self-lubricating
packing by winding a strip of canvas or other suitable material around a
rod or mandril, and cementing the coils or thicknesses thereof together,
in manner substantially as herein shown and described.
In witness whereof, I, the said Michael John Haines, have hereunto
.
set my hand and seal, this Eighteenth day of March, in the year
of our Lord One thousand eight hundred and seventy-two.