Improvements in Hydraulic and Steam Packing for Stuffing Boxes of Steam Engines, Pumps, and other Mechanical Appliances.
Year: 1896

page_text: Date of Application, 28th Sept., 1896
Complete Specification Left, 19th June, 1897-Accepted, 31st July, 1897
PROVISIONAL SPECIFICATION.
Improvements in Hydraulic and Steam Packing for Stuffing Boxes
of Steam Engines, Pumps, and other Mechanical Appliances.
LEWIS THUCK Llandaff Road Cardiff in the County of Glamorgan Analytical
Chemist do hereby declare the nature of this invention to be as follows:-
This improved Hydraulic and Steam Packing for stuffing Boxes of Steam Engines,
Pumps, and other Mechanical Appliances has for its object the enabling of any
Mineral or Vegetable Fibre to withstand a very high degree of heat, and a very
high degree of pressure without causing an undue amount of friction when used as a
packing for stuffing boxes for either steam water or any liquid and keeping the
glands perfectly tight without undue pressure on the packing and to be at all times
elastic and compressable. This is effected or caused by the Method of Manufacturing
of the packing and the composition with which the fibre is mixed nearly any fibre
can be used by preference Asbestos, Rhea Flax or Jute either separate or one or.
more combined to suit different purposes for steam Asbestos or Rhea fibre either'
separate or the two combined is preferred.
If the Packing is made as follows the suitable fibre is spun into small strands or
yarns, it is then coated with antifriction and protective composition by first passing
it through the composition and then passing it through a compressing Machine so
as to force the composition well into the fibre. The antifriction and protective
composition is made as follows the proportions of the different materials can be
varied to suit different purposes they are of the following Manganese Sulphur, Carbon
soda Potash and carbonate of Ammonia made into a thick solution by being well
mixed with oil or water. After the fibre is thoroughly coated with the antifriction
and protective composition it is Braded or woven into a Tape or cloth of suitable
width and thickness or the Tape or Cloth can be cut or folded to the width and
thickness required. It is then coated with an Adhesive and elastic composition
such as a Mixture of Rosin, Sulphur, Carbon Manganese and India Rubber, made
into a thick solution by Bisulphate of Carbon or Naptha, after the adhesive and
elastic composition is placed thickly on each side of the braid or cloth it is placed
in several layers one on the other to make it nearly of a square form, there is then
placed on one side or between the first and second thin layers a strip of vulcanised
India Rubber, the several layers with the India rubber is then pegged on stitched
tightly together. They are then placed in a suitable mold and tightly pressed to
size and shape required after being pressed it is subjected to a high degree of heat
for a time to harden it. It is then coated with a varnish or Solution of Rosin and
Naptha.
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page_text: Improvements in Hydraulic and Steam Packing for Stuffing Boxes
of Steam Engines, Pumps, and other Mechanical Appliances.
LEWIS THUCK "Tekoa" Queen's Hill, Newport (Mon.) late of Llandaff Road,
Cardiff Glamorgan Analytical Chemist do hereby declare the nature of this invention
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:-
An improved Hydraulic and Steam Packing for stuffing boxes of Steam Engines,
Pumps and other mechanical appliances, having for its object the enabling of any
mineral or vegetable fibre to withstand a very high degree of heat and a very high
degree of pressure without causing an undue amount of friction when used as a
Packing for stuffing-boxes for either Steam, Water or any liquid, keeping the glands
perfectly tight without undue pressure on the Packing, and being at all times elastic
and compressible. This is effected or caused, by the method of manufacturing the
Packing and the composition with which the fibre is mixed. Nearly any fibre can
be used but by preference Asbestos, Rhea, Flax or Jute, either separate or one or
more combined to suit different purposes for steam;-Asbestos or Rhea fibre,
either separate or the two combined, being preferable.
The Packing is made as follbws:-
The suitable fibre is spun into small strands or yarns, to which can be added one
or more metal wires to strengthen the fibrous strands or yarns if so required. It is
then thickly coated with an anti-friction and protective composition by first passing
it through the composition and then passing it through a compressing machine so
as to force the composition well into the fibre.
The anti-friction and protective composition is made as follows the proportions of
the different materials being variable to suit different purposes-Manganese, Silicite
of Magnesia, Sulphur, Carbon, Soda, Potash and Carbonate of Ammonia made into
a thick solution by being well mixed with oil or water. After the fibrous strands
or yarns are thoroughly coated with the anti-friction and protective composition,
and have been thoroughly pressed, they are braided or woven into a Tape or Cloth
of suitable width and thickness, or the Tape or Cloth may be cut or folded to the
width and thickness required. It is then coated with an adhesive and elastic.
composition such as a mixture of Resin, Sulphur, Carbon, Silicite of Magnesia, and
India Rubber, made into a thick solution by Bisulphide of Carbon or Naphtha. After
the adhesive and elastic composition has been placed thickly on each side of the
Braid or Cloth it is placed in several layers one on the other to make it nearly of a
square formation. There is then placed on one side or between the first and second
thin layers a strip of vulcanised India Rubber. The several layers, with the India
Rubber, are then pegged or stitched together and placed in a suitable mould or
press and tightly pressed to size and shape required. After being pressed it is
subjected to high degree of heat for a time to harden it. It is then coated with a
varnish or solution of Resin and Naphtha.
The proportions in which the materials in the anti-friction and protective compo-
sition are used are as follows:-
Silicite of Magnesia 47 parts, Manganese 2 parts, Sulphur 6 parts, Carbon 16 parts,
Soda 20 parts, Potash 3 parts, Carbonate of Ammonia 6 parts. Any of these
proportions can be varied or some of the materials left out to suit different purposes
as may be required for either Steam or Wator.
The Packing is made either in continuous or definite lengths of varied size, shape
or thickness and is cut to the proper length for the stuffing box when required to
be used.

page_text: The object of my invention is to produce a much more durable and efficient
Packing to withstand a high degree of heat and pressure without an undue amount
of friction. The Packing is placed in the stuffing box so that several layers of the
different materials are parallel with the rod or stuffing box which allows of its being
at all times elastic and compressible.
Having now particularly described and ascertained the nature of my said Inven-
tion and iu what manner the same is to be performed I declare that what I
claim is :-
(1) The coating of the fibrous strands or yarns, with or without the metal wires,
with the Anti-friction and protective composition and the passing of the same
through a compressing machine so as to force the composition well into the fibre
before it is braided or woven. Substantially as and for the purpose herein
described.
(2) The braiding or weaving of the fibrous strands or yarns, with or without the
metal wires, after they are coated with the anti-friction and protective composition,
into a wide thin tape or cloth. Substantially as and for the purpose herein
described.
(3) The coating of the Tape or Cloth with the Elastic and adhesive composition
and placing them in layers one on the other, then pegging or stitching them
together and afterwards pressing tightly with a suitable press. Substantially as
and for the purpose herein described.
(4) The general arrangement of the placing of the several layers of fibrous tapes
or cloths in the form described. Substantially as and for the purpose herein
described.
(5) The folding of the cloth or braid after it has been coated with the compositions
so that it will form layers one upon the other, then pressing them into the shape
required. Substantially as and for the purpose herein described.
Dated this Eighteenth day of June 1897.
LEWIS THUCK,
Per J. B. Burrell, his Attorney.