An Improved Discharge Cock, especially applicable for Water Meters.
Year: 1890

page_text: ענענר UU
An Improved Discharge Cock, especially applicable for Water
Meters.
We, JOHANN DAVID HERING and Max Hugo HELBIG, of Chemnitz, in the
Empire of Germany, Manufacturers, 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 object of this invention is a discharge cock, in which the closing is
automatically and with the use of the conduit pressure so effected as to com-
pletely obviate any leaving open or dripping and allow the whole conduit to be
emptied in a most convenient way.
Referring to the accompanying drawing,
Fig. 1 is a vertical section, and
Fig. 2 a top view of the improved discharge cock.
In the body a of the cock a pinion is lodged, which is adapted to be turned by
a handle c and thereby to impart up or down movement to a rack bar d.
The latter carries at the bottom a tube e which is guided in a box i screwed into
the discharge aperture of the cock and packed with leather plate or ring k.
The tubee has firmly screwed into it a tube f which is bored through crosswise
at its top and near o and is closed by a screw the head of which bears on a
leather packing h.
The working of the improved discharge cock is easily understood from the
foregoing description.
By raising the handle e as far as indicated by dotted lines in Fig. 1, also the
tube is raised through rack and pinion db, and tube e, and the liquid is allowed
to flow out through the apertures o of tube f.
The handle, on being released, descends, thereby causing also the valve tube ƒ
to fall down and establish the closing of the cock.
The tight closing of the improved cock is ensured on the one hand by the weight
of handler, rack bar d and tube e, on the other hand-and principally-by the
pressure of the liquid, contained in the water or other pipe. The closing therefore
always takes place with uniform energy, and any dripping, leaving open, or too
firm closing is efficaciously prevented.
When the conduit is to be emptied in order, for instance, to obviate the freezing
of the water or liquid contained therein, the lower cock of the water meter is
opened. Thereby air suction into the cocks of the conduit is produced and con-
sequently the discharge valve tube frises and allows the liquid to flow off.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
A discharge cock for liquids especially applicable to water meters which is
always automatically and uniformly closed by the conduit pressure acting on a
downwardly closing valve tube fand by the joint weight of a tube e adapted to
raise and lower said valve tube, a rack bar and a handle c, by which a pinion b
can be actuated, said cock being also, when applied to water meters, capable of

page_text: opening automatically for emptying the conduit when the lower cock of the water
meter is opened, substantially as illustrated and described.
Dated this 10th day of September 1890.
JOHANN DAVID HERING,
MAX HUGO HELBIG.
By Huelser & Co.,
Temple Chambers, London, their Attorneys.