IMPROVEMENTS IN THE MANUfacture OF. PACKING FOR THE GLANDS OF STEAM ENGINES AND OTHER PARTS of MACHINERY "
Year: 1883

page_text: LETTERS PATENT to Edward Turner of 3 Canons Marsh in the City and
County of Bristol for an Invention of "IMPROVEMENTS IN THE MANUfacture
OF. PACKING FOR THE GLANDS OF STEAM ENGINES AND OTHER PARTS of
MACHINERY
"
PROVISIONAL SPECIFICATION left, by the said Edward Turner at the Office
of the Commissioners of Patents on the 11th October 1883.
EDWARD TURNER of 3 Canons Marsh in the City and County of Bristol.
"IMPROVEMENTS IN THE MANUFACTURE OF PACKING FOR THE GLANDS OF STEAM
ENGINES AND OTHER PARTS. OF MACHINERY
"
This Invention has for its object improvements in the manufacture of packing
for the glands of steam engines and other parts of machinery.
For this purpose Linden bark has heretofore in some cases been employed the
bark being twisted or plaited into a rope or band. The bark is difficult to work
alone and a former Patent was granted to me and another N° 2397 in the year
1877 for the use of the bark together with esparto fibre. I then employed a
relatively small proportion of linden back. I am now able to produce a superior
packing by substituting hemp, flax, or jute for the esparto and by employing a
relatively large proportion of bark. The packing is prepared for use by saturating
it with tallow or other lubricant and French chalk I also employ. The packing
thus produced is more durable and in other respects better.
•
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page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Edward Turner in the Patent Office on the 9th April 1884.
EDWARD TURNER of 3 Canons Marsh in the City and County of Bristol
" IMPROVEMENTS IN THE MANUFACTURE OF PACKING FOR THE GLANDS OF STEAM
ENGINES AND OTHER PARTS OF MACHINERY
"
This invention has for its object improvements in the manufacture of packing
for the glands of steam engines and other parts of machinery.
For this purpose Linden Bark has heretofore in some cases been employed the
bark being twisted or plaited into a rope or band. The bark is difficult to work
alone and a former Patent was granted to me and another N° 2397 in the year
1877 for the use of the bark together with Esparto fibre I then employed a
relatively small proportion of Linden bark. I am now able to produce a superior
packing by substituting hemp, flax or jute for the esparto and by employing a
relatively large proportion of bark. The packing is prepared for use by saturating
it with tallow or other lubricant and French chalk I also employ. The packing
thus produced is more durable and in other respects better
The following is the manner in which I prefer to conduct the manufacture:-
I take the fibre of Linden bark and either hemp flax or jute (flax I use by
preference) and I card and draw these fibres together and spin them into a yarn.
A suitable proportion for the mixture of the fibres is 3 parts of Linden fibre to
one part of flax. The size of the yarn may be varied but a yarn weighing one
ounce per 7 yards will be suitable. The yarn should be twisted sufficiently to
give necessary strength but it should not be hard twisted.
From this yarn
I produce a strand or strands of the required size to form the core of the packing
and I saturate the core with tallow or other lubricant as is at present the
practice in making packings from other fibrous materials. I finish the packing by
producing a braided covering upon the core I pass the core downwards into the
braiding machine through a cup or dish filled with powdered French chalk and
having an opening in the bottom fitting the core. Through this opening the core
descends carrying down the powder with it to the point immediately below where
the braid is found upon it. The braided covering is by preference produced from
yarns of flax but hemp or other fibre may be employed.
Having thus described the nature of my said invention and the manner of
performing the same I would have it understood that I claim :-
My improvements in the manufacture of packing for the glands of steam engines
and other parts of machinery consisting in combining Linden fibre with hemp flax
or jute and therewith forming the core of the packing substantially as described.
In witness whereof I the said Edward Turner have hereunto set my hand and
seal this Eigth [sic] day of April in the year of our Lord One thousand eight
hundred and eighty four.