Improved Corrugated Pipes for Steam, Water, Gas, Air, and other Fluids.
Year: 1889

page_text: COMPLETE SPECIFICATION.
Improved Corrugated Pipes for Steam, Water, Gas, Air, and other
Fluids.
I, JOHN WILLIAM OLDROYD, of the Town of Grünberg, Silesia, in the German
Empire, Engineer, do hereby declare the nature of my said invention, and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
My invention relates to improved corrugated pipes for steam, water, gas, air and
other fluids which are so manufactured that the said pipes or tubes are provided with
corrugations running around or in transverse direction to the length of the same,
which said corrugation can be annular or of helical form. This corrugation of the
pipes or tubes has the important advantage that the diameter and weight of my
improved pipes or tubes can be considerably less than with straight walled tubes, even
when they are subjected to heavy exterior and interior pressure.
When applied as steam, hot water and similar service or supply pipes my improved
corrugated pipes or tubes can expand or contract without being liable to injure the
connections as is at present the case with smooth pipes or tubes; the corrugated form
also facilitates the production of water and air tight connections as the packing and
the like will be firmly held between the corrugations at the ends of the pipes or
tubes.
If such tubes are employed for drying or heating, or for cooling purposes the
action of the corrugated pipes is unproportionately larger than with smooth pipes or
tubes in consequence of the great increase in surface.
In the accompanying drawings, Figures 1 and 2 represent my improved corrugated
piping or tubing in longitudinal and cross section.
Figure 3 is the elevation of a piece of pipe or tubing with annular corrugations.
Figure 4 is a longitudinal section.
Figure 5 a cross section, and
Figure 6 the elevation of a piece of tubing with screw like corrugations transverse
to the longitudinal axis of the same.
The corrugations in the pipes or tubes of appropriate material, are produced by
rolling the said pipes or tubes by means of grooved rollers, or they may be cast in
suitable moulds.
The tube A, Figure 1 to 3, provided with annular corrugations transverse to the
longitudinal axis of the same, whilst the pipe or tube B, Figures 4 to 6, is provided
with inclined or helical corrugations running at a suitable incline to the longitudinal
axis of the pipe or tube.
The form of the corrugations and the number of the corrugations is a given
length of tubing are immaterial, and it is also unnecessary to describe any particular
method of manufacturing the said pipes or tubes as the present appliances can be
modified so as to suit the purpose.
Instead of making the corrugations transversely to the longitudinal axis, longi-
tudinal corrugations may be employed without departing from the nature of my
invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, what I claim is :-
Improved tubes or pipes for steam, water, gas compressed air and other purposes,
he walls of which are corrugated for the purpose of increasing their stability and

page_text: also increasing the surface of the same, substantially as and for the purpose set forth
in the foregoing specification, and illustrated on the accompanying drawings.
Date :
JM 1000
GEO. DOWNING,
Agent for Applicant.