Improvements in Apparatus for Testing whether Pipes or Tubes are Fluid Tight..
Year: 1898

page_text: Date of Application, 12th Oct., 1898
Complete Specification Left, 12th July, 1899-Accepted, 12th Aug., 1899
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Testing whether Pipes or Tubes
are Fluid Tight..
.I, OTTO FRANKL, of 1, Vincent Square, Westminster, in the County of Middlesex,
Inventor, do hereby declare the nature of this invention to be as follows:-
This invention relates to apparatus for testing whether pipes or tubes. are
fluid tight. The apparatus is simple in construction and in its method of opera-
tion.
The apparatus comprises a liquid reservoir or chamber having an inlet and an out-
let pipe the former provided with a shut off cock or valve. The reservoir or chamber
is filled with a liquid to the level of the inlet and outlet pipes, and a displacement
tube is fitted, by means of a gland and stuffing-box, in the reservoir or chamber
so that the lower end dips below the surface of the liquid. The inlet pipe is
fitted with suitable means to force or admit air under pressure or other gas there-
through and the outlet pipe is fitted with means for air tightly connecting it
to the pipe or tube to be tested.
When the apparatus is connected up, air under pressure or other suitable gas
is forced or admitted to the interior of the reservoir or chamber and its pressure
on the surface of the liquid therein displaces same and causes it to rise in the
displacement tube; the cock or valve in the inlet pipe is then shut off, and
any leakage in the pipe or tube being tested will be indicated by a fall of the
liquid in the displacement tube.
Datad this 19th dox of October 1808
F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicant.
Improvements in Apparatus for Testing whether Pipes or Tubes
are Fluid Tight.
I, OTTO FRANKL, of 1, Vincent Square, Westminster, in the County of Middlesex,
Inventor, 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 apparatus for testing whether pipes or tubes are
fluid tight. The apparatus is simple in construction and in its inethod of opera-
tion.
The accompanying drawing shows in part sectional elevation apparatus con-

page_text: structed according to this invention adapted for testing ordinary illuminating
gas pipes; the shape and arrangement of the parts however may be modified to
suit requirements.
The apparatus comprises a liquid reservoir or chamber A having an inlet pipe
B and an outlet pipe the former being provided with a shut off cock or valve B'.
The reservoir or chamber A is filled or partially filled with a liquid, and a
displacement tube D is fitted, by means of a gland E and stuffing box E' the
latter of which is provided with à screw cover E², in the reservoir or chamber A
so that the lower end of said tube D dips below the surface of the liquid. The
inlet pipe B is fitted with or attached to suitable means to force or admit air
under pressure or other gas therethrough and the outlet pipe C is fitted with an
union joint C or other means for air tightly connecting it to the pipe or tube F
to be tested, which pipe or tube is temporarily air tightly closed at its outer end.
When the apparatus is connected up, air under pressure or other suitable gas
is forced or admitted to the interior of the reservoir or chamber A and its pressure
on the surface of the liquid therein displaces same and causes it to rise in the
displacement tube D; the cock or valve B¹ in the inlet tube pipe B is then shut
off, and any leakage in the pipe or tube F being tested will be indicated by a fall
of the liquid in the displacement tube D.
The apparatus is adapted for testing a domestic or other service of gas or water
as well as for testing single pipes or a series of pipes closed at the further end as
before described. If it should be required to test, say, the gas supply pipes in
a building it is. only necessary to shut off all the supply cocks and connect some
part of the supply pipe to the outlet pipe C of the apparatus. The operation is
then as before described except that the compressed air or other gas admitted
acts first upon the illuminating gas in the pipes and compresses same and when
equilibrium is established between the pressure of the gas in the pipes and the
compressed air admitted to the chamber A, the water will then rise in the dis-
placement tube D.
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:-
Apparatus for testing pipes or tubes consisting of a liquid reservoir having
an inlet pipe fitted with a shut off cock or valve, an outlet fitted with an union
joint or other means for connecting the pipes to be tested, and a displacement
tube fitted tight in the top of the said liquid reservoir substantially as and for the
purpose hereinbefore described and illustrated in the accompanying drawings.
Hated hi 1941 la
T..1.. 1900
F. W. GOLBY,
36, Chancery Lane, London, W.C., Patent Agent for the Applicant.