Year: 1886

page_text: Date of Application, 2nd Oct., 1886.
Complete Left, 28th June, 1887.
Complete Accepted, 9th Aug., 1887.
RESERVE
I, HERMAN KELLERMAN of Vienna, in the Empire of Austria, Gentleman, do
hereby declare the nature of this invention to be as follows:-
This invention relates to the manufacture of conical or cylindrical pipes or tubes of
any required diameter and length and having walls of any desired thickness.
The improved pipes or tubes are made by helically coiling a strip or strips of
corrugated sheet-metal around a mandril so that the corrugations will form continuous
screw-threads, the edges of the strip or strips being connected together by means of
solder or in any other desirable manner. Pipes or tubes thus formed possess great
strength and rigidity, and are of more pleasing appearance than other pipes or tubes.
Pipes or tubes of this kind may be made by coiling one strip of corrugated sheet-
metal; or by coiling two strips. In the latter case the coils of one of the said strips
are of larger diameter than the coils of the other strip by the thickness of the
material.
The strips of sheet-metal used for the manufacture of such tubes may be passed
through dies to corrugate them immediately previous to being coiled upon a mandril.
Tubes of the described kind possess a very high resistance against thrust and
breaking-strain, and they may be used to advantage in many cases, for instance for
conveying steam, or water, and as gutter-pipes, lamp-posts, telegraph-poles, etc.
Tubes of this shape may be connected together by screwing the end of one tube
into the end of the other tube, one tube acting as the male screw and the other as
the female.
Tad thin and Antahan 1886
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.

page_text: Improvements in the Manufacture of Pipes or Tubes of
Sheet Metal.
I, HERMAN KELLERMAN, of Vienna, in the Empire of Austria, Gentleman, 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 manufacture of conical or cylindrical pipes or tubes of
any required diameter and length and having walls of any desired thickness.
The improved pipes or tubes are made by helically coiling strips of corrugated
sheet-metal, so that the corrugations will form continuous screw threads. The edges
of the strips are connected together by solder or any other desirable means. Pipes
or tubes thus formed possess great strength and rigidity, and are of more pleasing
appearance than other pipes or tubes.
Pipe tubes of this kind may be made by coiling one strip of corrugated sheet metal,
or by coiling two strips. In the latter the coils formed by one of the said strips must
be of larger diameter than the coils of the other strip by the thickness of the
material. The strips of sheet metal used for the manufacture of such tubes may be
flat and then passed through dies for corrugating them immediately previous to being
coiled upon a mandrel.
The accompanying drawing shows partly in side elevation and partly in longitudinal
section a tube made of a strip of corrugated sheet metal.
To make a cylindrical pipe or tube a strip A of corrugated sheet metal is helically
wound on a cylindrical mandril its edges a being caused to overlap one another to a
certain extent, for instance as indicated at a said overlapping portions. being designed
to be soldered together.
In making conical tubes I use a plate the sides of which converge towards a point,
the said plate being wound upon a conical mandrel and its edges caused to overlap as
herein before described.
Tubes of the described kind possess a very high resistance against thrust and
breaking-strain and they may be used to advantage in many cases, for instance for
conveying steam, or water, as gutter-pipes, as lamp-posts, telegraph-poles etc. It will
be seen that tubes of this shape may be connected together by screwing the end of
one tube into the end of the other tube, one tube acting as the male screw and the
other as the female.

page_text: The sheet metal strips may be made of any suitable metal and they may be plated
or coated with tin, zinc, copper or nickel.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed, I declare that what I claim is :-
Conical or cylindrical pipes or tubes made by helically coiling corrugated sheet
metal strips around suitable mandrels, the said strips, if desired, being plated or
coated with tin, zinc, copper or nickel or other suitable coating.