Improvements in Hydrants and the like.
Year: 1896

page_text: Date of Application, 10th Mar., 1896
Complete Specification Left, 8th Dec., 1896-4ccepted, 20th Feb.. 1897
Date of Application, 10th Mar., 1896
Complete Specification Left, 8th Dec., 1896-4ccepted. 20th Feb.. 1897
PROVISIONAL SPECIFICATION.
Improvements in Hydrants and the like.
We, EMILE HOCHEDEZ, Mechanical Engineer, of 46 Rue Héricart, and
THEODORE FAIVRE, Mechanical Engineer, of 8 Rue Pelletier both in Paris, in
the Republic of France, do hereby declare the nature of this invention to be as
follows:-
This invention relates to devices for the supply of water and especially to
hydrants and is intended to preserve their contents from freezing.
This apparatus, being placed under the level of the ground at a convenient
depth, consists essentially of a chamber into the lower part of which enters a nozzle
similar to an injector nozzle in communication with the delivery pipe of the water
cock. The water escaping from the nozzle enters and rises in a pipe enlarged in
its lower part immediately in front of the extremity of the nozzle. This action
sucks up the water contained in the chamber and carries it, with the water
from the nozzle, along the said pipe to its delivery end at the extremity of the
pipe.
When the flow of the water from the nozzle is interrupted, the water in the pipe
falls back, thus emptying the said pipe into the chamber where it is at such depth
that it is protected against congelation.
The flow and the stoppage of the water are controlled from above the ground
by operating through a rod a spring puppet valve placed in the feed pipe passing
the water to the nozzle. A safety valve is provided in the upper part of
the chamber for the automatic evacuation of any surplus water or air in this
chamber.
Dated this 10th day of March 1896.
HERBERT HADDAN & Co.,
Agents to the Applicants.
We, EMILE HOCHEDEZ of 46 Rue Héricart Paris, Engineer and THEODORE
FAIVRE of 8 Rue Pelletier, Paris both in the Republic of France, Mechanical
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:-
This invention relates to devices for the supply of water and especially to
hydrants and is intended to preserve their contents from freezing.
The apparatus to be placed under the level of the ground, at a couvenient
depth, consists essentially of a chamber from which the water is sucked by that
which flows from a nozzle conveniently arranged, in such a manner that as soon as
[Price 8d.1

page_text: the out flow is stopped, the water which is in the upper conduct or delivery
pipe emerging above the ground, falls by means of its weight back into the
chamber. The latter being placed out of the reach of the frost, it is evident, that
the water contained therein cannot freeze.
In the annexed drawing:
Fig. 1 is a vertical section of the apparatus on line 1-2 of Fig. 2.
Fig. 2 is a horizontal section on the lines 3-4 and 5-6 of Fig. 1.
This apparatus has a chamber a in the under part of which ends a conical
nozzle b. The chamber a provided towards its upper part with a safety valve a
communicating with the free air, is arranged in an excavation of the ground at a
sufficient depth to be out of reach of frost.
In the axis of this chamber is a vertical tube c enlarged at its under part towards
the top of the nozzle b; this tube is prolonged by the delivery pipe d which
passes to the place where the water is required.
Upon the admission pipe e of the nozzle b are arranged first a valve operated
by means of a rod f' carrying at one of its extremities a button f to be operated
by hand. Second a union screw h intended to facilitate the fixing of this apparatus
considering of the possibility that it may be turned in any direction which
arrangement is well known.
OPERATION.
In order to cause the water to flow out the button f2 is pressed in order to open
the valve the water passes through the pipe e and the nozzle b and rises in the
tube e sucking up the water contained in the chamber a and carrying it into the
delivery pipe d from the end of which it flows out. This aspiration has also
the effect of removing the valve a', from its seat.
In order to stop the discharge the button is released the valve f closes again
and the water which then fills the delivery pipe d falls by means of its weight back
into the chamber a, the volume of which is sufficient for receiving it. This
chamber a being protected against frost this will evidently be the case also with
regard to the water which it contains.
By falling back into the chamber a the water drives the air past the valve a', but
if for any reason, a surplus of water flows into this chamber a, it would be retained
by the valve a' which being lifted by the current of water in which also it will weigh
less than in air would close the communication with the exterior. But as this will
happen very rarely the valve a' may be dispensed with without injuring in any way
the operation of the apparatus.
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
An improved apparatus for the supply of water, intended to preserve the same
from freezing and containing a chamber a protected against frost into the under
part of which enters a nozzle b from which the water rises in a vertical tube c d
enlarged at its lower end thus sucking up the water contained in the chamber a
which chamber the water remaining in the delivery tube d fills after the stoppage
of the apparatus thus emptying the part d of the pipe which is exposed to frost.
Dated this 8th day of December 1896.
HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, London, Agents to Applicants.