IMPROVEMENTS IN THE MANUFACTURE OF PACKING FOR STEAM ENGINES AND OTHER MACHINERY
Year: 1868

page_text: LETTERS PATENT to Ivon Bruce Miller, of Hackney Road, in the
County of Middlesex, for the Invention of "IMPROVEMENTS IN THE
MANUFACTURE OF PACKING FOR STEAM ENGINES AND OTHER MACHINERY."-
Partly a communication from abroad by William Hartley Miller, of
Philadelphia, Pennsylvania, United States of America.
Sealed the 20th November 1868, and dated the 26th May 1868.
PROVISIONAL SPECIFICATION left by the said Ivon Bruce Miller
at the Office of the Commissioners of Patents, with his Petition,
on the 26th May 1868.
I, IVON BRUCE MILLER, of Hackney Road, in the County of Middlesex,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN THE MANUFACTURE OF PACKING FOR STEAM ENGINES AND OTHER MACHINERY,"
(partly a communication to me from abroad by William Hartley Miller,
of Philadelphia, Pennsylvania, United States of America;) to be as
follows:-
This Invention relates to the manufacture of packing for the stuffing
boxes and pistons of steam and other engines and pumps and for other
machinery, and consists principally in the employment of superposed

page_text: tubes of fibrous and metallic tissue, or a combination of these kinds of
tubes, with the interposition or impregnation of any suitable lubricating
material.
Figure 1 in the annexed Drawing represents the inner tube or core a
of plaited fibrous material (or of metal if preferred); Figure 2 represents
this primary tube a covered with a second plaited tube or sheath b;
Figure 3 represents an inner tube a of woven or plaited metal covered
with a second tube of plaited fibrous material; Figures 4 and 5 repre-
sent in cross section and side view a packing composed of several series
of concentric tubes a, b, c, d, e, f, g, with the interposition of layers
of lubricating material h. These tubes as before described are com-
posed of threads of fibrous material or metallic wire woven, knitted,
plaited, or braided by means of an ordinary braiding (or other suitable)
machine. The primary tube or core a having been formed is saturated
or impregnated with the lubricating material, and in this state is passed
a second time through the braiding machine, where it is covered with the
second tube b, this second tube being then saturated with the lubricating
material, in the same manner is in its turn covered with a third tubular
casing, and so on until the packing has acquired the requisite diameter.
The tubes are thus successively compressed so that the packing when
finished forms a compact flexible and elastic cord. The fibrous tubes
should (by preference) be formed of hemp, flax, or cotton, and the metallic
ones of brass wire. In some cases (if preferred) mixed tubes may be used
formed of metallic wire and fibrous material woven or braided together in
various proportions according to circumstances. For the lubrication of
the tubes I prefer to use paraffine and a substance called "calcimine,"
but other substances may be employed, such as wax, suet, oil, tale,
steatite, graphite, and other organic or inorganic lubricating matters.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Ivon Bruce Miller in the Great Seal Patent 3
Office on the 26th November 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, IVON
BRUCE MILLER, of Hackney Road, in the County of Middlesex, send
greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-sixth day of May, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
first year of Her reign, did, for Herself, Her heirs and successors,
give and grant, unto me, the said Ivon Bruce Miller, Her special
licence that I, the said Ivon Bruce Miller, my executors, adminis-
trators, and assigns, or such others as I, the said Ivon Bruce Miller, 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 "IMPROVE-
MENTS IN THE MANUFACTURE OF PACKING FOR STEAM ENGINES AND OTHER
MACHINERY," (of part thereof I am the true and first Inventor, and
the other part thereof has been communicated to me from abroad
by William Hartley Miller, of Philadelphia, Pennsylvania, United
States of America, upon the condition (amongst others) that I, the
said Ivon Bruce Miller, my executors or administrators, by an instru-
ment 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 immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Ivon Bruce Miller, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement in writing, and on reference being had
to the accompanying Sheet of Drawings, that is to say :-
This Invention relates to the manufacture of packing for the stuffing
boxes and pistons of steam and other engines and pumps and for other
machinery, and consists principally in the employment of superposed
tubes of fibrous and metallic tissue, or a combination of these kinds of
tubes, with the interposition or impregnation of any suitable lubricating
material.
Such being the nature and object of my said Invention for " "Improve-
ments in the Manufacture of Packing for Steam Engines and other
Machinery," I will now proceed to describe more in detail the manner

page_text: in which the same is to be or may be performed or carried into practical
effect, and in order that the same may be distinctly understood I have
annexed hereunto a Sheet of Drawings illustrative thereof, and have
marked the same with figures and letters of reference corresponding with
those in the following explanation thereof, that is to say:-
Figure 1 in the annexed Drawing represents the inner tube or core a
of plaited fibrous material (or of metal if preferred); Figure 2 represents
this primary tube a covered with a second plaited tube or sheath b;
Figure 3 represents an inner tube a of woven or plaited metal covered
with a second tube b of plaited fibrous material; Figures 4 and 5 repre-
sent in cross section and side view a packing composed of several series
of concentric tubes a, b, c, d, e, f, g, with the interposition of layers of
lubricating material h. These tubes as before described are composed
of threads of fibrous material or metallic wire, woven, knitted, plaited, or
braided by means of an ordinary braiding (or other suitable machine).
The primary tube or core a having been formed is saturated or impreg
nated with the lubricating material, and in this state is passed a second
time through the braiding machine, where it is covered with the second
tube b. This second tube being then saturated with the lubricating
material in the same manner is in its turn covered with a third tubular
casing, and so on until the packing has acquired the requisite diameter.
The tubes are thus successively compressed, so that the packing when
finished forms a compact flexible and elastic cord. The fibrous tubes
should (by preference) be formed of hemp, flax, or cotton, and the metallic
ones of brass wire. In some cases if preferred mixed tubes may be used
formed of metallic wire and fibrous material woven or braided together
in various proportions according to circumstances. For the lubrication
of the tubes I prefer to use paraffine and a substance called "calcimine,"
but other substances may be employed, such as wax, suet, oil, talc,
steatite, graphite, and other organic or inorganic lubricating matters.
Having now described the nature and object of my said Invention for
"Improvements in the Manufacture of Packing for Steam Engines and
other Machinery," together with the manner in which the same is to be
or may be performed or carried into practical effect, I would remark in
conclusion that I do not intend to confine myself to the details of
manufacture above described, which may obviously be varied or modified
according to circumstances, and on the other hand I do not desire to
claim as new the simple application of woven or plaited fabrics for the

page_text: manufacture of packing for steam engines and other machinery, but
what I claim and desire to secure by the above in part recited Letters
Patent is, the formation of packing by the superposition of tubes of
ibrous or metallic fabric (or fibrous and metallic fabric) with the inter-
position or impregnation of a suitable lubricating substance, substantially
as above described and represented in the Drawings annexed.
In witness whereof, I, the said Ivon Bruce Miller, have hereunto
set my hand and seal, this Twenty-first day of November, in the
year of our Lord One thousand eight hundred and sixty-eight.
IVON BRUCE MILLER. (L.S.)