Improvements in Pipe Couplings.
Year: 1898

page_text: Date of Application, 21st July, 1898-Accepted, 3rd Sept., 1898
Improvements in Pipe Couplings.
I, VILHELM AUGUST JENSEN, residing at Frederiksborgvej 17, Copenhagen L,
Kingdom of Denmark, Marine Engineer, do hereby declare the nature of this in-
vention, 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 means for coupling small pipes, and the object thereof is
to provide improved devices for this purpose, whereby the abutting ends of pipes may
be quickly and easily connected, the opposite ends of which are attached or connected
so that a coupling nut cannot be slipped thereover; and with this and other objects
in view the invention consists in the construction, combination and arrangement of
parts hereinafter described and claimed.
The invention is fully disclosed in the following specification of which the
accompanying drawing forms a part, in which the separate parts of my improve-
ment are designated by the same numerals of reference in each of the views, and
in which;-
Fig. 1, is a perspective view of a coupling nut which
composed of two parts;
employ, said nut being
Fig. 2, a side view of the abutting ends of two parts or sections of pipes coupled
according to my invention;
Fig. 3, a longitudinal section on the line 3, of Fig. 1; and,
Fig. 4, a side view of the separate parts of my improved coupling nut disconnected.
The usual method of connecting the ends of small pipes is by employing a coupling
nut, but through wear and tear and often through carelessness, by not having the two
parts of the pipe in a horizontal line, when attempting to couple the same, the threads
on the nut are stripped off and a new nut is required, which in most cases necessitates
the cutting off the collar or flange at the end of one of the sections of the pipe, and after
the new nut has been placed on, said collar or flange must be brazed on to the end
of the pipe from which it was cut, and this is a very difficult task, especially at sea
where many engineers have only a limited knowledge of the operation of brazing.
In the drawing forming part of this specification I have shown at 5 and 6 the
abutting ends of two pipes, and one of these pipes is provided with a cylindrical
screw threaded head 7 and the other with a collar or flange 8, and in the practice of
my invention I provide a coupling nut which consists of two parts 9 and 10 and these
parts are similar in form, and each is also semi-circular in cross section, and each is
provided with a transverse groove 11 and with interlocking shoulders or projections 12
and said parts are adapted to be put together as shown in Fig. 1, and when thus
placed together, they form a complete nut.
It will be understood that the separate parts of this nut may be placed on the
pipe 5 and inter-locked as clearly shown in Fig. 2, and then screwed onto the screw
threaded head 7 so as to clamp the two pipes together, said nut being provided with
an annular inwardly directed flange or rim 13 which is partly on one of the parts
thereof and partly on the other, and which operates in connection with the flange, rim
or collar. 8.

page_text: When the separate parts of the nut have been placed on the pipe, and connected
as described, it may be screwed into position as clearly shown in Figs. 2, and 3, and
said nut may also be screwed off the coupling head 7 whenever desired, and the
separate parts thereof may be disconnected and removed from the pipe when
necessary.
It will be understood that the separate parts of the nuts are locked together, as
soon as the nut begins to pass on to the cylindrical head 7, the threads on said head
and on the interior of the separate parts of the nut operating to produce this result,
and if at any time the threads in the nut become destroyed, a new nut may be placed
upon the pipe without cutting off the flange, rim or collar 8, on the section 5
thereof.
It will thus be seen that I accomplish the object of my invention by means of a
simple and effective construction and my improvements may be used wherever
couplings of this class are required.
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
1. The herein described means for coupling pipes, said means consisting of a nut
composed of two parts which are adapted to be interlocked, and said nut being also
provided at one end with an inwardly directed flange or rim, substantially as
shown and described.
2. A nut for use in coupling pipes, said nut being composed of two parts which
are adapted to be be inter-locked and said nut being also provided at one end with an
inwardly directed flange or rim, substantially as shown and described.
3. The combination with two pipes, one of which is provided at one end with
a cylindrical screw threaded head, and the other with a flange, rim or collar, of
a coupling nut which is composed of two inter-locking parts said nut being provided
at one end with an inwardly directed flange or rim, substantially as shown and
described.
Dated this 21st day of July 1898
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.