Improvements in Disconnectable Couplings for Pipes, Hose, and the like.
Year: 1893

page_text: Date of Application, 23rd Dec., 1893-Accepted, 3rd Feb., 1894
COMPLETE SPECIFICATION.
Improvements in Disconnectable Couplings for Pipes, Hose, and
the like.
We, AUGUST HONIG, of 20 Appelhof Platz, Cologne on the Rhine, Germany,
Fire Engine Manufacturer, and MAURICE SCHWAB of 96, Deansgate, Manchester,
in the County of Lancaster, Gas Engineer, 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:-
Our invention relates to disconnectable couplings for pipes, tubes, hose, and the
like, as for example for steam, water, gas, vacuum pipes, or tubes such as railway
brake tubes, and the like; the object being to produce a simple, unbreakable, ant
inexpensive coupling adapted to be instantly connected and disconnected, but
ensuring a firm air and water-tight joint.
According to our invention we provide a pair of interlocking connecting pieces
or sections, which may be castings of brass, gun-metal, iron, steel, or other suitable
metal or material, such as vulcanised rubber for said pipes and so forth. The
outer ends are provided with the ordinary external circumferential grooves, threads,
or suitable provision for securing the pipe or hose; the meeting and jointing faces
are in every respect identical.
On the face of each casting are formed two or more equidistant projections and
two or more equidistant bored lumps or eyes; when two projections are used
they are at right angles to the lumps or eyes. In one side of each eye is a groove
or passage adapted to admit, receive, and hold the corresponding projections which
rest in the eyes when the coupling is united.
To ensure a tight joint internal rings of rubber are provided and held in position
by internal metallic rings or ferrules. The said rubber rings are made of suitable
forms for withstanding either pressure or vacuum as required.
We will now fully describe our invention in reference to the accompanying
drawing, in which
Fig. 1 is an elevation of the face of one part or section of a coupling having
two projections and two eyes:
Fig. 2 is a back elevation of one section and a front elevation of the other as they
appear when placed together ready for coupling up, but not united;
Fig. 3 is a plan showing the same coupling united;
Fig. 4 is a longitudinal section of same; and
Figs. 5 and 6 are cross-sections showing forms of rubber rings and metallic fixing
rings or ferrules for pressure and vacuum respectively.
AA are the two sections of the coupling prepared as stated to receive on the
outer and exterior ends aa the sections of pipe or hose to be jointed. The meeting
faces are identically the same, each being illustrated as having two opposite
projections SS and two opposite lumps H H, each of the latter being bored with
an eye E, and having a side groove or passage N. It is to be understood that we
do not confine ourselves to the use of two projections and two corresponding eyes
only, as any desired number may be used as required for the varying diameter of
pipes, etc. In longitudinal section these lumps are of the forms shown best in
Fig. 4, slightly bevelled off where required to fit the corresponding projections S S,
and facilitate motion, entry, and fitting.
In the body of each section is formed an annular groove g for the receptacle of
the rubber rings G-G; these are formed of such shapes as are shown in Fig. 5
for withstanding pressure from within, and in Fig. 6 from without as in the case of
a vacuum pipe, as will be readily understood. FF are the internal metal rings or

page_text: ferrules recessed into the body of each section and projecting over the ring
recesses q. g. for fixing and maintaining the rubber rings G in their positions.
To make the coupling the two sections A A¹ are put together as in Fig. 2, then
by giving a one-eighth part of a revolution to the right (in the direction of the
arrow) all the four projections S. S., S. S., of the two pieces A A' enter through the
grooves N. N., N. N., into the four corresponding ſumps H. H., H. H., of both
sections, the coupling being thus securely held at four equidistant points round its
periphery. The action forces together the internal rubber rings G G and the
coupling is united. To disconnect, a reverse motion is to be performed.
Having now particularly described and ascertained the nature of this inven-
tion and in what mauner the same is to be performed we declare that what we
claim is :-
1. A disconnectable coupling for pipes, hose, and the like, consisting of a pair of
interlocking connecting pieces or sections A A' (to which the pipe sections are
secured), with jointing faces identically constructed, each having on its jointing
face two or more equidistant projections such as S. S., and a corresponding number
of equidistant lumps or eyes H. H. each formed with a side groove N, in combina-
tion with rubber joint rings G G fixed by metallic rings FF, all substantially as
.set forth.
2. The disconnectable coupling for pipes, hose, etc. constructed and arranged as
above described and illustrated.