IMPROVEMENTS IN THE MANUFACTURE OF PACKING FOR THE STUFFING OR PACKING BOXES OF STEAM ENGINES AND PUMPS, AND FOR OTHER JOINTS REQUIRING TO BE MADE STEAM, AIR, OR WATER TIGHT.” PROVISIONAL SPECIFICATION
Year: 1877

page_text: LETTERS PATENT to Jesse Kirkman, of Chorley, in the County of Lancaster,
for the Invention of "IMPROVEMENTS IN THE MANUFACTURE OF PACKING FOR
THE STUFFING OR PACKING BOXES OF STEAM ENGINES AND PUMPS, AND FOR
OTHER JOINTS REQUIRING TO BE MADE STEAM, AIR, OR WATER TIGHT.”
PROVISIONAL SPECIFICATION left by the said Jesse Kirkman at the Office
of the Commissioners of Patents on the 18th May 1877.
JESSE KIRKMAN, of Chorley, in the County of Lancaster.
"IMPROVEMENTS IN
THE MANUFACTURE OF PACKING FOR THE STUFFING OR PACKING BOXES OF STEAM
ENGINES AND PUMPS, AND FOR OTHER JOINTS REQUIRING TO BE MADE STEAM, AIR,
OR WATER TIGHT."
This Invention relates to improvements in the manufacture of the packing
described in the Specification of my former Letters Patent, dated May 30, A.D.
1874, No. 1896.
This packing, as described in the said former Specification, is formed of yarn or
strands of fibrous material, saturated, impregnated, or covered with a solution of
pure india-rubber or india-rubber compound, to which is added tale, soapstone, or
other mineral lubricant.
According to my present improvements 1 pass the said impregnated yarn or,
strands through a bath or over a wheel which revolves, partly immersed, in a bath
of paraffin wax, or other animal, vegetable, or mineral fatty or oily matter, and
twist, weave, or braid the same into a rope.
If the said packing is twisted I weave, coil, or braid a fibrous covering or
envelope upon the same, and before or after this covering or envelope is coiled,
woven, or braided upon the said rope, I prefer to pass the said rope through a bath.
containing paraffin wax, or other mineral, vegetable, or animal fatty or oily.
matter.
In some instances I make my improved packing with a core or central portion.
of fibrous material, saturated with paraffin wax, or other mineral, vegetable, or,
animal oily or fatty matter, and unimpregnated with the india-rubber compound..

page_text: This improved packing when used in the stuffing boxes of steam engine
piston rods and the like may be fitted therein, as described in the said former
Specification.
When the said improved packing, or packing made as described in the Specifi-
cation of my former Patent, No. 1896, is designed for the joints of man-hole lids of
steam boilers, and the like, I prefer to use iron or other wire to form a part of the
core or central portion of the same.
This packing may be applied to such joints by laying a coil of the same between
the surfaces of the joint or in any convenient manner.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Jesse Kirkman in the Great Seal Patent Office on the 15th November
1877.
JESSE KIRKMAN, of Chorley, in the County of Lancaster.
"IMPROVEMENTS IN
THE MANUFACTURE OF PACKING FOR THE STUFFING OR PACKING BOXES OF STEAM
ENGINES AND PUMPS, AND FOR OTHER JOINTS REQUIRING TO BE MADE STEAM, AIR,
OR WATER TIGHT."
This Invention relates to improvements in the manufacture of the packing
described in the Specification of my former Letters Patent, dated May 30, A.D.
1874, No. 1896.
This packing, as described in the said former Specification, is formed of yarn or
strands of fibrous material, saturated, impregnated, or covered with a solution of
pure india-rubber or india-rubber compound, to which is added talc, soapstone, or
other mineral lubricant.
I now pass the said impregnated or saturated yarn or strands through a bath
or over a wheel which revolves, partly immersed, in a bath of paraffin wax, or
other animal, vegetable, or mineral fatty or oily matter, and then twist, weave, or
braid the same into a rope.
If the said packing is twisted I weave, coil, or braid a fibrous covering or
envelope upon the same. This covering is preferably in soine instances formed of
fibrous material, impregnated or saturated with a compound of india-rubber and
soapstone. Before or after this covering or envelope is coiled, woven, or braided
upon the said rope, I prefer to pass the said rope through a bath containing paraffin
wax, or other mineral, vegetable, or animal fatty or oily matter.
In some instances I make my improved packing with a core or central portion
of fibrous material, saturated with paraflin wax, or other mineral, vegetable, or
animal oily or fatty matter, and unimpregnated with the india-rubber compound;
or, if desired, this central portion or core may be formed of fibrous material not
saturated with oily or fatty matter. When the packing is made with this fibrous
core or central portion it will be less liable to hardening or stiffening than it would
be without this central core, and will therefore be very advantageous in some cases;
for instance, for the stuffing boxes or stamper valves, and in other apparatus
wherein it is not subject to constant lubrication.
This improved packing when used in the stuffing boxes of steam engines,
piston rods, and the like, may be fitted therein, as described in the said former
Specification.
When the said improved packing, or packing made as described in the Specifi-

page_text: cation of my former Letters Patent, No. 1896, is designed for the joints of man-hole
lids of steam boilers, and the like, I prefer to use iron or other wire to form a part
of the core or central portion of the same. This wire core renders the packing
more convenient for bending it into any required shape, and retaining its shape
when bent.
I am aware that wire has been used with various kinds of packing, but to my
knowledge it has not been used in combination with packing made as above
described.
This packing may be applied to such joints by laying a coil of the same between
the surfaces of the joint, or in any convenient manner.
Having thus fully described my said Invention and the manner of performing
the same, I wish it understood that I claim,―
First. The packing composed of fibrous material saturated or impregnated with
india-rubber, and provided with a core or centre of fibrous material which may or
may not be saturated with oily or fatty matter, as above set forth.
Second. The packing composed of fibrous material impregnated or saturated
with india-rubber, with or without any of the other ingredients, and provided with
a wire core or centre, as above set set forth.
In witness whereof, I, the said Jesse Kirkman, have hereunto set my hand
and seal, this Thirteenth day of November, in the year of our Lord One
thousand eight hundred and seventy-seven.
JESSE KIRKMAN. (L.S.)