AN IMPROVED PACKING FOR STUFFING BOXES
Year: 1872

page_text: LETTERS PATENT to William Walker, of Gate Head Mill, Greetland,
in the Parish of Halifax, in the County of York, India-rubber
Manufacturer, for the Invention of "AN IMPROVED PACKING FOR
STUFFING BOXES."
Sealed the 23rd August 1872, and dated the 26th February 1872.
PROVISIONAL SPECIFICATION left by the said William Walker at the
Office of the Commissioners of Patents, with his Petition, on the
26th February 1872.
I, WILLIAM WALKER, of Gate Head Mill, Greetland, in the Parish of
Halifax, in the County of York, India-rubber Manufacturer, do hereby
declare the nature of the said Invention for "AN IMPROVED PACKING FOR
STUFFING BOXES," to be as follows:―
This Invention relates to improvements in the manufacture of packing
for stuffing boxes of steam and other motive power engines and pumps.
Heretofore packing for this purpose has consisted of linen, cotton, or
other fabric combined with strips of india-rubber enclosed within such

page_text: fabric, but it is found the oil or lubricant applied to the piston and
stuffing box decomposes and destroys the india-rubber and so the whole
packing must be renewed.
In constructing ring packing according to my Invention I employ
linen, cotton, or other fabric, within which I enclose strips or bands of
cork forming concentric rings of linen or fabric and of cork. The cork
gives great elasticity and is not injured by the oil or other lubricant
applied to the piston rod and stuffing box, and packing so made is not
only more durable but lighter and of greatly reduced cost of production.
The ordinary brass gauze is employed, or perforated sheet brass may be
applied as interior lining for the packing.
"Rope packing" is made in accordance with this Invention by
enclosing strips of cork within linen, cotton, or other fabric.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Walker in the Great Seal Patent Office
on the 26th August 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, William
WALKER, of Gate Head Mill, Greetland, in the Parish of Halifax, in the
County of York, India-rubber Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-sixth 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 William Walker, Her special licence
that I, the said William Walker, my executors, administrators, and
assigns, or such others as I, the said William Walker, 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 STUFFING BOXES," upon the condition (amongst others) that I, the
said William Walker, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should

page_text: 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 William Walker, 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, and accompanying Sheet of Drawings:-
This Invention relates to improvements in the manufacture of packing
for stuffing boxes of steam and other motive power engines and pumps.
Heretofore packing for this purpose has consisted of linen, cotton, or
other fabric, combined with strips of india-rubber enclosed within such
fabric, but it is found the oil or lubricant applied to the piston and
stuffing box decomposes and destroys the india-rubber and so the whole
packing must be renewed.
In constructing ring packing according to my Invention I employ
linen, cotton, or other fabric, within which I enclose strips or bands of
cork forming concentric rings of linen or fabric and of cork. The cork
gives great elasticity and is not injured by the oil or other lubricant
applied to the piston rod and stuffing box, and packing so made is not
only more durable but lighter and of greatly reduced cost of production.
The ordinary brass gauze is employed, or perforated sheet brass may be
applied as interior lining for the packing.
"
Rope packing " is made in accordance with this Invention by
enclosing strips of cork within linen, cotton, or other fabric.
Such being the nature and object of this my said Invention, I will now
proceed to describe the same in detail, and in order that the Invention
may be clearly understood I have hereunto annexed a Sheet of Drawings
illustrative thereof, and have marked the same with figures and letters
of reference, the same letter referring to the same part in the various
views or Figures.
Fig. 1 is a plan view of a packing ring constructed according to this
my Invention; Fig. 2 is a cross section of the same.
A is the linen or fabric within which the strips of cork B are enclosed;
C is the ordinary gauze of wire. The interior of the ring consists of a
number of coils of linen, cotton, or other fabric webbing, then the

page_text: ring of cork B is coiled round and followed by other coils of the linen or
fabric webbing until the ring is of the diameter or size required. Any
number of the rings of cork may be introduced as desired and the
whole is secured by means of the wood pegs D.
At Fig. 3 I have shewn the cork B enclosed between the layers of
linen. When employing this material for constructing packing it will
be necessary simply to cut the rings to the size or diameter required.
At Figs. 4 and 5 I have shewn the same materials, that is to say,
linen, cotton, or other fabric, and cork rolled for the construction of rope
packing.
Having thus fully described the nature and particulars of this my
Invention, together with the manner in which the same is to be or may
be performed, I would have it distinctly understood that I claim the
combination of cork with linen, cotton, or other fabric, to be employed
in the manufacture of packing either in the ring, sheet, or rope, as herein
fully described.
In witness whereof, I, the said William Walker, have hereunto
set my hand and seal, this Twenty-third day of August, in the
year of our Lord One thousand eight hundred and seventy-two.
Witness,
WALTER BRIERLEY,
(Tasker & Brierley),
Patent Agents,
WILLIAM WALKER.
(L.S.)
Halifax, Bradford, & Blackburn.