An Improved Joint-making Packing for Steam, Water, Gas, and other Liquids or Fluids.
Year: 1893

page_text: Date of Application, 23rd Mar., 1893
Complete Specification Left. 22nd Dec., 1893-Accepted, 3rd Feb., 1894
PROVISIONAL SPECIFICATION.
An Improved Joint-making Packing for Steam, Water, Gas, and
other Liquids or Fluids.
I, CLAUDE KENNEDY MILLS, of 23 Southampton Buildings in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention, a com-
munication to me from Alphonse Costadau, of 14 Rue Basse-Combalot, Lyons in
the Republic of France, Manufacturer, to be as follows, reference being had to the
accompanying drawings and to the figures and letters marked thereon :-
The new joint consists in principle of a body of compressible material such as
cardboard, or asbestos fibre, rubber, cork, felt &c. covered with one or more layers
of more or less malleable metal, such as copper, lead, German silver, aluminium &c.
These joints are made in the form of washers or in any other form convenient for
and are used in a dry state by simply placing them between the two parts to
be united, which are tightened up in the usual manner; further they can be used a
great number of times.
use,
The accompanying drawings show the more ordinary forms at Figures 1 to 5.
The metallic envelope may be in a single piece cut out according to the shape
of the joint, the inner edge a of which is first raised as shown at Figure 1 and then
turned down onto the compressible body c to form the joint shown at Figure 2.
In this form the compressible material is exposed on the outer circumference or
periphery and the body may be formed of a cut out washer or of fibres wound
round the interior of the groove or gullet formed by the metal when bent into the
form shown at Figure 2.
Figure 3 shows an analogous form of joint obtained by raising and bending
inwards the outer edge of the metal, the body being exposed on the inner edge.
In the two forms shown at Figures 2 and 3 the body can be completely
envelloped by binding over the same the inner or outer edges as shown at Figures 4
and 5.
In Figure 6, the compressible material having the form of the joint to be
produced, a washer for example is placed between two copper washers the one a
of which has its inner edge raised and then bent over onto the second washer a¹
which is flat. This enclosure of the washer a' within the turned back inner edge of
the washer a is sufficient to hold solidly the interior material.
In Figure 7 the same result is obtained by bending a ring b over onto the inner
edges of two flat washers a a¹ between which is placed the compressible material.
This form allows an inferior metal to be used for the washers which do not require
to be bent by stamping.
In Figure 8 the compressible material is completely covered by the metal of
which one of the plates a has its inner and outer sides raised and then bent down
over the other plate a¹. There is thus obtained with a very thin metal a very solid
joint from which the compressible material cannot escape.
Sheet asbestos or asbestos fibre is used by preference as the interior material, and
copper for the exterior envelope, but other materials capable of fulfilling the
conditions required in each particular case may be employed.
Dated Mouch 22-11902

page_text: COMPLETE SPECIFICATION.
An Improved Joint-making Packing for Steam, Water, Gas, and
other Liquids or Fluids.
1, CLAUDE KENNEDY MILLS of 23 Southampton Buildings in the County of
Middlesex, Patent Agent do hereby declare the nature of this invention a com-
munication to me from Alphonse Costadau of 14 Rue Basse-Combalot, Lyons in
the Republic of France, Manufacturer, and in what manner the same is to be
performed to be particularly described. and ascertained in and by the following
statement, reference being had to the drawings accompanying my Provisional
Specification and to the figures and letters marked thereon:-
The new joint-making packing consists in principle of a body of compressible
material such as card-board, or asbestos fibre, rubber, cork, felt & c. covered with
one or more layers of more or less malleable metal, such as copper, lead, German
silver aluminium &c.
These joints are made in the form of washers or in any other form convenient for
use, and are used in a dry state, by simply placing them between the two parts to
be united, which are tightened up in the usual manner; further they can be used a
great number of times.
The drawings accompanying my Provisional Specification show the more ordinary
forms at Figures 1 to 5.
The metallic envelope may be in a single piece cut out according to the shape of
the joint, the inner edge a of which is first raised as shown at Figure 1 and then
turned down onto the compressible body c to form the joint shown at Figure 2.
In this form the compressible material is exposed on the outer circumference, or
periphery and the body may be formed of a cut out washer or of fibres wounds
round the interior of the groove or gullet formed by the metal when bent into the
form shown at Figure 2.
Figure 3 shows an analogous form of joint obtained by raising and bending
inwards the outer edge of the metal, the body being exposed on the inner edge. In
the two forms shown at Figures 2 and 3 the body can be completely enveloped by:
bending over the same the inner or outer edges as shown at Figures 4 and 5.
In Figure 6 the compressible material having the form of the joint to be
produced, a washer for example, is placed between two copper washers the one a of
which has its inner edge raised and then bent over onto the second washer a¹ which
is flat.
This enclosure of the washer a¹ within the turned back inner edge of the
washer a is sufficient to hold solidly the interior material.
In Figure 7 the same result is obtained by bending a ring over onto the inner
edges of two flat washers a a¹ between which is placed the compressible material.
This form allows an inferior metal to be used for the washers which do not require
to be bent by stamping..
In Figure 8 the compressible material is completely covered by the metal of which
one of the plates a has its inner and outer sides raised and then bent down over the
other plate a'. There is thus obtained with a very thin metal a very solid joint
from which the compressible material cannot escape.
Sheet asbestos or asbestos fibre is used by preference as the interior material, and
copper for the exterior envelope, but other materials capable of fulfilling the
conditions required in each particular case may be employed.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what!
claim is :-
1. A new or improved joint-making packing for steam, water, gas &c. formed

page_text: of a body of asbestos or other suitable compressible material, wholly or partially
covered with one or more layers of copper or other malleable metal substantially as
herein before described.
2. A new or improved joint-making packing for steam, water, gas &c. formed
of a body of asbestos or other suitable compressible material wholly or partially
covered with one or more layers of copper or other malleable metal, by means,
substantially as or analogous to those hereinbefore described.
C. K. MILLS,
By Harris & Mills,
23, Southampton Buildings, W.C., Agents.