An Improved Pipe Coupling.
Year: 1896

page_text: Date of Application, 12th May, 1896-Accepted, 13th June, 1896
COMPLETE SPECIFICATION.
An Improved Pipe Coupling.
I, ARIE WILLEM FREDERIK BENNIK of Apeldoorn, in the Kingdom of The
Netherlands, Manufacturer, do hereby declare the nature of this invention and in
what manner the same js to be performed to be particularly described and
ascertained in and by the following statement:-
This invention relates to a pipe coupling which consists essentially of a divided
or split nut adapted to be slipped over the adjacent ends of the two lengths of pipe
to be joined together and of a strap or sleeve adapted to hold the two parts of the
divided nut together.
The improved coupling is illustrated in the accompanying drawing which
illustrate this invention:-
Figures 1, 2 and 3 are views showing one form the invention may assume.
Figures 4 and 5 are views showing another form the invention may assume.
Figure 6 is a view of another modification.
Figures 7 and 8 are views showing another modification, and
Figures 9 and 10 are views showing a further modification.
Throughout the views similar parts are marked with like letters of reference.
Referring to Figures 1, 2 and 3 the improved coupling consists of a nut formed
in two parts c and d and adapted to be placed around or over the ends of the two
lengths of pipe ab which are provided with oppositely directed screw-threads, and
which may have a packing ring f between them. In this arrangement the nut c d
has the form of a polygon (such for instance as a hexagon). Over or around this
nut there is slipped a strap or sleeve e so that the two parts of the nut are firmly
held together. The fundamental shape of the strap in this modification is annular,
and in the interior of the strap there are formed incisions or notches into which the
corresponding corners of the two parts c and d engage, so as to prevent rotation of
the parts.
The modification illustrated in Figures 4 and 5 differs from the preceding
arrangement in that the two halves c and d of the nut (which is of annular shape in
this case) are provided with projections c and d which take into notches e' in the
strap which is also of annular form.
The modification shown in plan by Figure 6, differs from the preceding
arrangement only by the angular form of the strap e which is shaped to coincide
with the exterior shape of the divided nut c d.
In the modification illustrated by Figures 7 and 8 the ends of the two lengths of
pipe a and b are provided with similarly directed screw-threads and the divided
nut cd engages with the end of one length of pipe only, the other end of the divided
nut being recessed to receive an auxiliary divided nut n m.
In the modification illustrated in Figures 9 and 10 the auxiliary nut n m is
dispensed with and the end of the one length of pipe is provided with a flanged or
turned-over edge which engages with a shoulder on the divided nut c d.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
(1.) The improved pipe coupling, substantially as hereinbefore described and
illustrated by the accompanying drawing.
(2.) A pipe coupling consisting essentially of a divided nut adapted to be placed

page_text: over or around the ends of the two lengths of pipe to be coupled together, and of a
strap or sleeve adapted to be placed over the divided nut, as set forth.
(3.) A modification of the improved coupling as claimed by the preceding claim
in which the ends of the two lengths of pipe are provided with oppositely directed
screw-threads as shown by Figures 1, 2, 3, 4, 5 and 6.
(4.) A modification of the improved coupling as claimed by the second claim in
which one of the two ends of the two lengths of pipe (which are provided with
similarly directed screw-threads) is surrounded by an auxiliary divided nut which
is contained within a recess in the main divided nut as shown by Figures 7 and 8.
(5.) A modification of the improved coupling as claimed by the second claim in
which the end of one length of pipe is provided with a flanged or turned-over edge
with which a flange or shoulder on the divided nut engages as shown by
Figures 9 and 10.
Dated this 19th de..
2000
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Associate Agent.