An Improved Pipe-joint or Coupling.
Year: 1892

page_text: Date of Application, 19th Dec., 1892
Complete Specification Left, 18th Sept., 1893-Accepted, 21st Oct., 1893
PROVISIONAL SPECIFICATION.
An Improved Pipe-joint or Coupling.
We, THOMAS HOLMES, of 1, Bellevue Road, Seacombe, in the County of
Chester, Engineer, and ROBERT WILLIAMS, of 25 Bellevue Road, Seacombe, in .
the County of Chester, Shorthand Writer, do hereby declare the nature of this
invention to be as follows :-
:-
This invention relates to the joints of or couplings for pipes or conduits, in
which flanges are employed and are bolted together by bolts and nuts or equivalent
means.
According to this invention, the inner surfaces of the flanges by which the
adjacent ends of pipes are connected together, are corrugated, the corrugations
being so arranged that the projecting part or parts of one flange fit within the
spaces or hollows between the projections of the other flange.
By this construction, pipes may be fastened together and adapted to convey
liquids under pressure without the necessity of employing insertions of rubber,
asbestos, or the like, a layer of red lead or the like being sufficient to make the
joint good.
This form of flange may be applied to different sorts of couplings or connections
for pipes, tubes, or conduits; and the corrugated surfaces may be in rough, or
tooled.
2
The flanges or coupling may be made of cast metal, with the corrugations cast
in; or they may be made of wrought metal with the corrugations stamped or forged
in same.
CHEESBROUGH & ROYSTON, Fels. Chart. Inst. P.A.,
15, Water Street, Liverpool, Applicants' Patent Agents.
COMPLETE SPECIFICATION.
An Improved Pipe-joint or Coupling.
We, THOMAS HOLMES, of 1, Bellevue Road, Seacombe, in the County of
Chester, Engineer, and ROBERT WILLIAMS, of 25, Bellevue Road, Seacombe, in
the County of Chester, Shorthand Writer, 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 the joints of or couplings for pipes or conduits, in
which flanges are employed and are bolted together by bolts and nuts or equivalent
means.
According to this invention, the inner surfaces of the flanges by which the
adjacent ends of pipes are connected together, are corrugated, the corrugations
being so arranged that the projecting part or parts of one flange fit within the
spaces or hollows between the projections of the other flange.
By this construction, pipes may be fastened together and adapted to convey
fluids under pressure without the necessity of employing insertions of rubber,
asbestos, or the like, a layer of red lead or the like being sufficient to make the
joint good.
This form of flange may be applied to different sorts of couplings or connections
for pipes, tubes, or conduits; and the corrugated surfaces may be in rough or
tooled.
The flanges or couplings may be made of cast metal with the corrugations cast

page_text: in; or they may be made of wrought metal with the corrugations stamped or forged
in same.
In the drawings illustrating this invention, we shew two modifications or
applications thereof.
Figure 1 is a section through a pipe joint or coupling, and Figure 2 is an end
view thereof, wherein the pipe ends are brazed or similarly fastened into the
flanges: and
Figure 3 is a sectional view shewing to an enlarged scale how the corrugations
of one flange fit within the spaces or hollows of the other flange.
the
Figure 4 is a section, and
Figure 5 is an end view illustrating a cast pipe-coupling into which the ends of
pipes are screwed.
Referring to the drawings, a¹ a² are the two flanges; and 61 63 are the two pipes.
care the annular ridges or projections of the flange a', and c² are those of the
flange a³, the ridges or projections of the one fitting or lying within the annular
grooves or recesses of the other. When a joint is "made," the spaces d between
the upper part of the ridges of the corrugations and the lower part of the grooves
or hollows (see Figure 3), become filled with red or white lead, or the like, upon
the flanges being screwed up "home"; and by the form or shape of the parts it
becomes locked in a highly compressed state between the points e, where the
metal ridges or projections of the two flanges touch. Thus a plurality of annular
and locked-in packings of compressed red or white lead, or the like, are provided in
one joint, and a coupling joint capable of resisting and keeping tight against high
pressure steam, and other fluids, is afforded.
One advantage and effect in particular afforded by this invention is, that by the
construction or form of corrugated joint herein described, a perfectly tight, sound,
and durable joint can. be made by these couplings by using only red lead or
equivalent plastic packing material between the flanges; that is, without any solid
or rigid material, in cases where high pressure steam is being used in and conveyed
by the pipes.
In the couplings shewn in the drawings, it will be seen that two ribs or projecting
parts or corrugations are provided in each flange.
In the examples shewn, the corrugated parts of the flanges a¹ a² are disposed or
confined within the annular space between the pipe, and the inner edge of the bolt-
holes; thus no part of the packed portion of the flanges are disturbed or interfered
with by the bolt holes or fastening bolts.
With reference to Figures 4 and 5 of the drawings, the same features and
characteristics set forth with reference to the coupling or joint shewn in Figures 1,
2, and 3 also exist in this coupling; and thus no special explanation of these figures
is necessary, more than to say that they merely illustrate such features or
characteristics applied to cast pipe-couplings or flanges.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
The herein described improved pipe joint or coupling, that is to say, a pipe joint
or coupling consisting of flanges provided on their jointing faces with annular
corrugations, the ridges or projecting rings of the one flange fitting within the
annular grooves or recesses of the other; substantially as herein described, and
as set forth with reference to the drawings hereto annexed, for the purposes
specified.
71
CHEESBROUGH & ROYSTON, Fels. Chart. Inst. P.A.,
15, Water Street, Liverpool Applicants' Patent Agents.