IMPROVEMENTS IN THE MANUFACTURE OF PACKING FOR GLANDS
Year: 1877

page_text: LETTERS PATENT to William Terrell, of the Firm of William Terrell & Sons,
of No. 6, Welsh Back, & Edward Turner, of No. 3, Canou's Marsh, both in
the City & County of Bristol, for the Invention of IMPROVEMENTS IN THE
MANUFACTURE OF PACKING FOR GLANDS."
PROVISIONAL SPECIFICATION left by the said William Terrell and Edward
Turner at the Office of the Commissioners of Patcuts on the 20th June 1877.
WILLIAM TERRELL, of the Firm of William Terrell & Sons, of No. 6, Welsh Back,
& EDWARD TURNER, of No. 3, Canon's Marsh, both in the City & County of
Bristol. "IMPROVEMENTS IN THE MANUFACTURE OF PACKING FOR GLANDS."
This Invention has for its object improvements in the manufacture of packing for
glands.
For manufacturing packing we employ a mixture of esparto fibre and linden
fibre. We work the two fibres together, and produce compound yarns, from which
we make a rope or plait suitable for filling glands, packing pistons, and the like.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Terrell and Edward Turner in the Great Seal Patent Office
on the 20th December 1877.
WILLIAM TERRELL, of the Firm of William Terrell & Sons, of No. 6, Welsh Back,
and EDWARD TURNER, of No. 3, Canou's Marsh,, both in the City and County of
Bristol. "IMPROVEMENTS IN THE MANUFACTURE OF PACKING FOR GLANDS."
This Invention has for its object improvements in the manufacture of packing for
glands.
For manufacturing packing we employ a mixture of esparto fibre and linden
fibre. We work the two fibres together and produce compound yarns, from which
we make a rope or plait suitable for filling glands, packing pistons, and the like.
The linden fibre is boiled by preference in a solution of caustic soda for about
four hours, and then washed in water until perfectly clean. The esparto fibre is
also boiled in a solution of caustic soda for about eight hours, and is then washed
and thoroughly cleaned from all gummy and resinous matters by boiling in a
solution of soda or soda ash for four hours longer. Both are then dried and prepared
for carding. In this process both fibres are mixed together in the proportion of
12 of esparto to 7 of linden fibre, and made into a sliver, which is then spun into
yarn and afterwards formed into a rope by twisting several threads together,
suitable for stuffing boxes of all sizes, and other parts of machinery requiring to be
similarly packed. This rope is then saturated with oil, tallow, or other lubricating
compounds, and may be used in the same manner as flax or hemp is at present
employed.
Having thus described the nature of our said Invention and the manner of
performing the same, we would have it understood that we claim, the manufacture
of packing for glands from a mixture of esparto fibre and linden fibre formed into
a rope or plait and suitably prepared, substantially as herein described.
In witness whereof, I, the said William Terrell, have hereunto set my hand
and seal, this 19th day of December, in the year of our Lord One thousand
eight hundred and seventy-seven.
Signed in the presence of
CHARLES ROBERTSON,
6, Welsh Back,
Bristol.
WILLIAM TERRELL.
LAD.)