IMPROVEMENTS IN THE METHOD AND CONSTRUCTION OF PACKING, CHIEFLY APPLICABLE TO STUFFING BOXES AND OTHER LIKE PURPOSES, AND FOR FORMING THE JOINTS OF STEAM, WATER, OR GAS PIPES
Year: 1877

page_text: LETTERS PATENT to John Robinson, Gentleman, and Frederick John Robinson,
Merchant and Manufacturer, both of Bradford, in the County of York, for the
Invention of "IMPROVEMENTS IN THE METHOD AND CONSTRUCTION OF PACKING,
CHIEFLY APPLICABLE TO STUFFING BOXES AND OTHER LIKE PURPOSES, AND FOR
FORMING THE JOINTS OF STEAM, WATER, OR GAS PIPES."
Sealed the 29th December 1877, and dated the 11th July 1877.
PROVISIONAL SPECIFICATION left by the said John Robinson and Frederick
John Robinson at the Office of the Commissioners of Patents on the 11th
July 1877.
JOHN ROBINSON, Gentleman, and FREDERICK JOHN ROBINSON, Merchant and
Manufacturer, both of Bradford, in the County of York. "IMPROVEMENTS IN THE
METHOD AND CONSTRUCTION OF PACKING, CHIEFLY APPLICABLE TO STUFFING
BOXES AND OTHER LIKE PURPOSES, AND FOR FORMING THE JOINTS OF STEAM,
WATER, OR GAS PIPES."
Our Invention relates to new and improved construction of lubricating packing
material for use in stuffing boxes of piston rods and valve rods of steam engines
and pumps, and for other like purposes, combining an elastic base with a soft, fibrous,
and absorbent body; also in constructing packing for joints of steam, water, or gras
piping.
For this purpose we employ the pure waste of silk or noils, which we cause to be
condensed and spun, and made into ropes of any suitable size; the interstices of
the rope are filled with condensed noils, or with yarn or threads made of pure silk
waste or noils, and an outer textile covering made of silk noils is fixed over the
rope, and secured by india-rubber solution to cement the textile covering together;
and we prefer employing lubricants of animal or vegetable oils, and no mineral oils.
By these means we produce a packing which is not ignitible or combustible, giving
unimpaired absorbent properties, capable of holding oil, grease, or other lubricant;
and maintaining constant its lubricating functions.
We also construct stuffing box packing. of condensed silk noils, or of yarn or
threads made of pure silk waste or noils, laid in suitable thicknesses lengthways,

page_text: and covered with a silk noil textile outer covering, the joint being cemented by
india-rubber solution, or any other suitable solution.
We may also steep the silk noils in a-solution of liquid asbestos to prevent latent
heat when in contact with the bodies which rub the packing.
In making packing for steam, water, or gas joints, we form thin sheets of silk
noils, the noils being reduced to pulp and mixed with chalk and tallow; these thin
sheets are placed one over the other, in suitable thicknesses, and pressed solidly
together; the sheets of packing thus formed are cut into the form of a flat ring, or
square, or of any suitable size or shape, producing joint packing for steam, water, or
gas piping, which is soft and pliant, ensuring great durability, and cheap, compared
to packing commonly employed.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Robinson and Frederick John Robinson in the Great Seal
Patent Office on the 5th January 1878.
JOHN ROBINSON, Gentleman, and FREDERICK JOHN ROBINSON, Merchant and
Manufacturer, both of Bradford, in the County of York. “IMPROVEMENTS IN THE
METHOD AND CONSTRUCTION OF PACKING, CHIEFLY APPLICABLE TO STUFFING
BOXES AND OTHER LIKE PURPOSES, AND FOR FORMING THE JOINTS OF STEAM,
WATER, OR GAS PIPES."
The said Invention relates to new and improved construction of lubricating packing
material for use in stuffing boxes of piston rods and valve rods of steam engines
and pumps, and for other like purposes, combining an elastic base with a soft,
fibrous, and absorbent body; also in constructing packing for joints of steam, water,
or gas piping.
For this purpose we employ the pure waste of silk or noils, which we cause to be
condensed and spun, and made into ropes of any suitable size; the interstices of the
rope are filled with condensed noils, or with yarn or threads made of pure silk
waste or noils, and an outer textile covering made of silk noils is fixed over the
rope, and secured by india-rubber solution to cement the textile coverings together;
or we employ the pure silk waste or noils condensed and spun, which is woven and
wound in a rope, and we prefer employing lubricants of animal or vegetable oils.
and no mineral oils. By these means we produce a packing which is not
ignitible or combustible, giving unimpaired absorbent properties, capable of
holding oil, grease, or other lubricant, and maintaining constant its lubricating
functions.
We also construct our stuffing box packing of condensed silk noils, or of yarn or
threads made of pure silk waste or noils, laid in suitable thicknesses lengthways, and
covered with a silk noil textile outer covering, the joint being connected by india-
rubber solution, or any other suitable solution.
We may also steep the silk noils in a solution of liquid asbestos to prevent latent
heat when in contact with the bodies which rub the packing.
In making packing for steam, water, or gas joints, we form thin sheets of silk
noils, the noils being reduced to pulp, and mixed with chalk and tallow; these thin
sheets are placed one over the other, in suitable thicknesses, and pressed solidly
together; the sheets of packing thus formed are cut into the form of a flat ring, or

page_text: square, or of any suitable size or shape, producing joint packing for steam, water, or
gas piping, which is soft and pliant, ensuring great durability and cheapness in
comparison with the packing now commonly employed.
Having thus described our improvements, and the best means we are acquainted
with for carrying the same into effect, what we claim is,—
The construction of packing, chiefly applicable to stuffing boxes and other like
purposes, and for forming the joints of steam, water, or gas pipes, substantially as
described.
In witness whereof, I, the said Frederick John Robinson, for and on behalf of
myself and the said John Robinson, have hereto set my hand and seal,
this Fourth day of January, in the year of our Lord One thousand eight
hundred and seventy-eight.
FREDERICK JOHN ROBINSON. (L. S.)
Witness,
WALTER JAS. TURNER, C.E.,
Patent Agent,
Bradford.