AN IMPROVED HEAT RESISTING PACKING FOR THE STUFFING BOXES OF PISTON RODS, PUMP RODS, VALVE SPINDLES, AND RAMS
Year: 1872

page_text: LETTERS PATENT to John Fletcher, of No. 6, Bridgewater Street,
Broughton Road, Salford, in the County of Lancaster, Engineer
and Packing Manufacturer, for the Invention of "AN IMPROVED
HEAT RESISTING PACKING FOR THE STUFFING BOXES OF PISTON RODS, PUMP
RODS, VALVE SPINDLES, AND RAMS."
Sealed the 16th August 1872, and dated the 20th February 1872.
PROVISIONAL SPECIFICATION left by the said John Fletcher at the
Office of the Commissioners of Patents, with his Petition, on the
20th February 1872.
I, JOHN FLETCHER, of No. 6, Bridgewater Street, Broughton Road,
Salford, in the County of Lancaster, Engineer and Packing Manufacturer,
do hereby declare the nature of the said Invention for "AN IMPROVED
HEAT RESISTING PACKING FOR THE STUFFING BOXES OF PISTON RODS, PUMP RODS,
VALVE SPINDLES, AND RAMS," to be as follows:-
My Invention consists essentially in constructing a durable packing
for the stuffing boxes of piston rods, pump rods, valve spindles, rams,
the buckets of air and water pumps, and other similar purposes, and

page_text: consists in the use of a chain, band, or elastic flat band made from
copper wire and asbestos combined, or other metallic wire, such as brass,
iron, or steel. This wire is woven into a flat chain band of any length
or breadth required, and the asbestos is woven in and combined during
the process of manufacture.
I do not confine myself to a flat band as it will be apparent it can
be made round or square.
This chain band of wire and asbestos packing is applied in the fol-
lowing manner, that is, by lapping it round the piston rod in a sufficient
number of folds to fill the stuffing box belonging thereto. I also use it
as banding or webbing for the backing of wire gauze packing rings,
and for other similar purposes.
I also manufacture a packing ring of wire gauze and asbestos com-
bined, by introducing asbestos between the folds of wire gauze before it
is folded and flattened, I then coil it round a mandril to form the packing
ring.
This Invention is invaluable for the steam engines of vessels, and all
other engines where superheated steam is used, as it will resist any heat
used for such purposes.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Fletcher in the Great Seal Patent Office
on the 20th August 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
FLETCHER, of No. 6, Bridgewater Street, Broughton Road, Salford, in
the County of Lancaster, Engineer and Packing Manufacturer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria by Her Letters
Patent, bearing date the Twentieth day of February, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-fifth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said John Fletcher, Her special licence that I,
the said John Fletcher, my executors, administrators, and assigns, or
such others as I, the said John Fletcher, 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,

page_text: 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 HEAT RESISTING PACKING
FOR THE STUFFING BOXES OF PISTON RODS, PUMP RODS, VALVE SPINDLES, AND
RAMS," upon the condition (amongst others) that I, the said John
Fletcher, 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
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said John Fletcher, 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 essentially in constructing a durable packing
for the stuffing boxes of piston rods, pump rods, valve spindles, rams,
the buckets of air and water pumps, and other similar purposes, and
consists in the use of a chain band or elastic flat band made from
copper wire and asbestos combined, or other metallic wire, such as brass,
iron, or steel. This wire is woven into a flat chain band of any length
or breadth required, and the asbestos is woven in and combined during
the
process of manufacture.
I do not confine myself to a flat band as it will be apparent it can bo
made round or square.
This chain band of wire and asbestos packing is applied in the fol-
lowing manner, that is, by lapping it round the piston rod in a sufficient
number of folds to fill the stuffing box belonging thereto. I also use it
as banding or webbing for the backing of wire gauze packing rings, and
for other similar purposes.
I also manufacture a packing ring of wire gauze and asbestos com-
bined, by introducing asbestos between the folds of wire gauze before it
is folded and flattened, I then coil it round a mandril to form the packing
ring.
This Invention is invaluable for the steam engines of vessels, and all
other engines where superheated steam is used, as it will resist any heat
used for such purposes.

page_text: Having now described the nature of my said Invention, and the manner
in which the same is or may be used and carried into effect, I would
observe in conclusion that what I consider to be novel and original, and
therefore claim as the Invention secured to me by the herein-before in
part recited Letters Patent is,--
First. The construction and application of compound packing com-
posed of a chain band or elastic flat band made from copper wire and
asbestos combined or other suitable elastic material.
Secondly. The manufacture of a packing ring of wire gauze and
asbestos combined, by introducing asbestos between the folds of wire
gauze before it is folded and flattened for coiling round the mandril.
Thirdly. The use of the compound packing herein-before described as
a banding or webbing for the backing of wire gauze packing rings or
for other similar purposes.
In witness whereof, I, the said John Fletcher, have hereunto set
my hand and seal, this Tenth day of August, in the year of our
Lord One thousand eight hundred and seventy-two.
Signed, sealed, and delivered by the
before-named John Fletcher, in
the presence of
G. SEPTIMUS HUGHES,
Patent Agent,
Manchester.
JOHN FLETCHER. (L.S.)