Improvements in the Manufacture of Pipes.
Year: 1896

page_text: I, ALEXANDER STANLEY ELMORE, of Knostrop Old Hall, Leeds, in the County of
York, Electrical Engineer do hereby declare the nature of this invention to be as
follows:-
This invention has for its object the manufacture of pipes which shall be elastic
both in longitudinal aud transverse direction. For this purpose I form the pipe
with an outwardly projecting circular corrugation or several of these. In order to
form such corrugation I fix in the pipe at some distance apart two packed pistons.
Upou the outside of the pipe and immediately surrounding the space between the
pistons I fix a die made in halves having its inner surface shaped to the form of the
desired corrugation. Through one of the pistons I introduce fluid under pressure,
thus causing the pipe to bulge out and tako the form of the die. In order to avoid
too much stretching of the metal in forming the bulge, I prefer to apply to the pipe
some end pressure. In this manner, a corrugation may be formed at any part of the
length of the pipe. When desired, the pipe so corrugated may be fitted with a thin
internal liner pierced with a few small holes where the corrugation occurs.
Dated this 20th day of November 1896.
ABEL & IMRAY,
Agents for the Applicant.
Improvements in the Manufacture of Pipes.
I, ALEXANDER STANLEY ELMORE, of Knostrop Old Hall, Leeds, in the County of
York, Electrical Engineer, 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 has for its object the manufacture of pipes which shall be elastic
both in longitudinal and transverse direction. For this purpose I form the pipe
with an outwardly projecting circular corrugation or several of these employing
apparatus shewn in longitudinal section by Figure 1 and transverse section by
Figure 2 of the accompanying drawing. In order to form such a corrugation I fix
in the pipe T at some distance apart occupied by a block B two discs D, E, with
packings F. Upon the outside of the pipe and immediately surrounding the space
between the discs D, E, I fix a die C made in halves having its inner surface shaped to the
forin of the desired corrugation. By a pipe P through one of the discs D and the block B
I introduce fluid under pressure, thus causing the pipe T to bulge out and take the
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page_text: form of the die. In order to avoid too much stretching of the metal in forming the
bulge, I prefer to apply to the pipe some end pressure by nuts G screwing forward
end discs H. K. In this manner, a corrugation may be formed at any part of the
length of the pipe. When desired, the pipe so corrugated may be fitted with a thin
internal liner pierced with a few small holes, where the corrugation occurs. Figure 3
is a section of a bent pipe with a number of bulges and an internal liner L pierced
with small holes where the bulges occur.
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
1. The herein described method of forming a bulge or corrugation on a pipe by
forcing fluid under pressure into a packed space within, the pipe, which is then
enclosed in a die.
2. Apparatus for operating as above set forth, constructed substantially as
described, with reference to Figures 1 and 2.
3. A pipe with a number of bulges or corrugations and an internal perforated
liner, substantially as described with reference to Figure 3.
Dated this 13th day of August 1897.
ABEL & IMRAY,
Agents for the Applicant.