Improvements in Packing for Joints of Machinery and the like.
Year: 1893

page_text: Date of Application, 26th June, 1893
Complete Specification Left, 22nd Mar., 1894-Accepted, 25th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in Packing for Joints of Machinery and the like.
I JOHANN ZANKL, of 2ª Dreimühlenstrasse Munich in the Empire of Germany,
Manufacturer do hereby declare this invention to be as follows:-
--
This invention relates to a packing usually made for use in the form of a ring
and applicable to steam tight and other joints in boilers and machinery or apparatus
in general, as a cheap and practical replacement of the more expensive rubber or
asbestos and similar packings.
In manufacturing this improved ring a fine loose fibrous or cellular material
preferably of vegetable origin is used which readily absorbs water and as readily
separates therefrom and is intimately mixed with well cleaned or washed clay or
argillaceous earth (alumina), chalk and the like in proportion of 20 parts of clay or
the like to 80 parts of fibrous matter. This mixture is placed into tubular
envelopes of woven material made according to the required thickness of the ring
and sewn up, out of sufficiently broad strips of rough linen, cotton stuff or any
other suitable enveloping material which must be capable of easily absorbing water
and sufficiently resistent and strong.
The filled envelope, the length of which depends upon the diameter of the ring
desired is curved round so that its ends meet together and is sewn into a ring.
In order to adapt such rings to their uses they may be sufficiently flattened or
given any other desired form of cross section. Owing to their softness and
flexibility they can be used as packing not only for round flanges but for oval or
other more or less irregular shapes.
Immediately before using such packing it is placed for a short time in water and
then brought into position between the flanges or parts to be packed.
As the flanges or the like are pressed together, the water is almost entirely
driven out of the packing, the remaining portion of moisture allows a very intimate
adaptation of the packing to all uneven parts thereby giving an excellent packing
superior even to indiarubber.
The addition of clay (alumina) to the fibrous matter renders the fibrous material
and its envelope unaffected by heat and high pressure.
The packing may also be used without this addition of clay, particularly in cases
where it is not exposed to intense heat and high pressure.
However, as this addition of clay does not affect in any way the elasticity of the
packing but on the contrary materially increases its density, the packing provided
with addition of clay is of a superior value and affords moreover sufficient
guarantee of safety under high pressure and great heat.
This improved packing also resists the destroying effect of acids.
Dated this 26th day of June 1903
R. HADDAN,
Agent for Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Packing for Joints of Machinery and the like.
1 JOHANN ZANKL, of 2ª Dreimühlenstrasse Munich in the Empire of Germany,
Manufacturer, 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 :-
This invention relates to a packing usually made for use in the form of a ring
and applicable to steam tight and other joints in boilers and machinery or apparatus
in general, as a cheap and practical replacement of the more expensive rubber or
asbestos and similar packings.
In manufacturing this improved ring, a fine loose fibrous or cellular material
preferably of vegetable origin, is used, which readily absorbs water and as readily
separates therefrom. This material is intimately mixed with well cleaned or
washed clay or argillaceous earth (alumina) chalk and the like in proportion of
20 parts of clay or the like to 80 parts of fibrous matter. This mixture is placed
into tubular envelopes of woven material made according to the required thickness
of the ring and sewn up out of sufficiently broad strips of rough linen, cotton stuff,
or any other suitable enveloping material which must be capable of easily absorbing
water, and sufficiently resistent and strong. The filled envelopes, the length of
which depends upon the diameter of the ring desired, is curved round so that its
ends meet together and is sewn into a ring. In order to adapt such rings to their
uses, they may be sufficiently flattened or given any other desired form of cross
section. Owing to their softness and flexibility they can be used as packing not
only for round flanges but for oval or other more or less irregular shapes.
Immediately before using such packing, it is placed for a short time in water and
then brought into position between the flanges or parts to be packed etc., and as
the flanges or the like are pressed together, the water is almost entirely driven out
of the packing, the remaining portion of moisture allows a very intimate adaptation
of the packing to all uneven parts, thereby giving an excellent packing superior
even to india-rubber.
The addition of clay (alumina) to the fibrous matter renders the fibrous material
and its envelope unaffected by heat and high pressure.
The packing may also be used without this addition of clay, particularly in cases
where it is not exposed to intense heat and high pressure. However as this
addition of clay does not affect in any way the elasticity of the packing, but on the
contrary materially increases its density, the packing provided with addition_of
clay is of a superior value and affords moreover sufficient guarantee of safety under
high pressure and great heat. This improved packing also resists the destroying
effects of acids.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
Improved packing consisting of fibrous or cellular material with or without
addition of clay (alumina) or the like packed in an enveloping web of rough linen
or any other suitable covering material substantially as set forth.
Dated this 22nd day of March 1894
R. HADDAN,
Of the Firm of Herbert Haddan & Co.,
18, Buckingham Street, Strand, London, W.C., Agent to the Applicant.