Improvements in or relating to Pipe Couplings with Automatio Closing Devices.
Year: 1896

page_text: Date of Application, 22nd Aug., 1896-Accepted, 31st Oct., 1896
COMPLETE SPECIFICATION.
Improvements in or relating to Pipe Couplings with Automatio
Closing Devices.
We, WILHELM PINOKERT, of Bollwerk 36, Stettin, Merchant, and CARL
PRUTZ, of Stargard in Pommern, Railway Porter, both in the Empire of
Germany, 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 :-
The improvement in this invention consists in the arrangement whereby on
disconnecting two pipe ends, two cocks which are arranged in the coupling boxes
are closed automatically. By coupling together the pipe ends tho cocks are again
opened automatically so as to free the passage for the liquid or gas in the pipe.
In the annexed drawing
Fig. 1 shows the coupling in longitudinal section.
Figs. 2 and 3 show the cock casings with the cock in plan view and in cross
section.
Figs. 4 to 6 show the upper cock and
Figs. 7 to 10 the under cock.
Fig. 11 is a section through the connecting place of the cocks.
The coupling boxes a bare fixed in the usual manner on the pipo cods and
provided with two grooved projections cd into which reach the projections e
The disconnecting is possible if the pipe ends are perpendicular to another. In the
boxes a bare the cock casings gh the revolution of which is prevented by the
pins i arranged on the box walls. In these casings are seated the cocks k 1,
the movement of the same is limited by pins m, which move in slots n of the
casings. Over tho cocks and cock casings are caps o which are screwed in corre-
sponding screw threaded openings of the boxes a b. The cocks kl are provided
with slots p which in the opened position of the cocks coiucide with the slots g of
the casings g h.
.
The cocks, Figs. 4-11, engage with one another by meaus of the collars r
and the tongues tu. The latter may be of any number.
When the coupling is loosened the cocks ghkl are closed and the pipe ends
stand at a right angle to one another. When the coupling is to be made the
boxes a bare placed one over the other so that the projections ef reach into the
grooved projections cd and that the cocks & lie over one another. The tongues!
Fig. 11, then engage into one another forming a closed ring, and the collars rs
lie one within the other. The tightening is completed by the angular tightening
rings v. In the present position the cocks klare connected in such a manner that
neither can turn as regards the other. If the pipe ends standing rectangularly to
one another are now turued so that they lie in one plane the boxes a bare fixed
solidly by the moving over one another of the projections c d e f: while the
cocks remain fixed. The cock casings g h however are turned simultaneously
with the coupling boxes so that the slots p q are brought into coincidence and the
cocks are opened.
Having now particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed we declare that what
we claim is
1. A pipe coupling having two coupling boxes ab which are connected by means

page_text: of grooved projections c d e f and in which are arranged cocks ghk which are
connected together by putting them over one another and which remain relatively
fixed during the coupling and the disconnecting whilst the casings g h connected
solidly with the sockets a bare turned with the latter and bring into or out of
coincidence the slots p q in the casings and the cocks.
2. In the pipe coupling described in the above claim the connection of the
cocks by means of collarss reaching over one another and studs tu engaging
with one another and composing a closed ring.
Dated this 22nd day of August 1896.
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, London, Agents for Applicants.