A Self-closing Draw-off Valve Nozzle for Water Pipes.
Year: 1892

page_text: Date of Application, 24.h Dec., 1892
Complete Specification Left, 12th Sept., 1893-Accepted, 14th Oct. 1893
PROVISIONAL SPECIFICATION
A Self-closing Draw-off Valve Nozzle for Water Pipes.
I, FRIEDRICH WILHELM HERMANN PALM, Manager of the Löwenbrauerei,
36, Bleicherstrasse, Hamburg, Germany, do hereby declare the nature of this
invention to be as follows:-
This invention relates to a self-closing draw-off valve nozzle primarily intended
to be applied to water pipes in cases where the water is so frequently required as
for the washing of industrial utensils or apparatus, that no trouble is taken to turn
the tap on and off and much waste ensues.
The device consists of a preferably bottle-shaped body portion or nozzle of
elastic material adapted to connect by a union or ferrule to the end of a pipe and
having an internal arched slitted diaphragm presenting its convex side towards the
water pressure so that the lips of the slit which may slightly project from the
couvex face are pressed tightly together by the water pressure but by compressing
the body portion or nozzle in the direction of the length of the slit the latter is
expanded to the form of an oval aperture and is caused by the elasticity of the
body portion to resume its normal closed position immediately the compression is
relaxed.
Dated this 24th day of December 1892
,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.
COMPLETE SPECIFICATION.
A Self-closing Draw-off Valve Nozzle for Water Pipes.
1 FRIEDRICH WILHELM HERMANN PALM, Manager of the Löwenbrauerei,
of 36 Bleicherstrasse, Hamburg, 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:
This invention relates to a self-closing draw-off valve-nozzle primarily intended
to be applied to water pipes in cases where the water is so frequently required (as
for the washing of industrial utensils or apparatus) that no trouble is taken to turn
the tap on and off and much waste ensues.
The device consists of a, preferably, bottle-shaped body portion or nozzle of
elastic material adapted to connect by a union or ferrule to the end of a pipe and
having an internal arched slitted diaphragm presenting its convex side towards the
water pressure so that the lips of the slit, which may slightly project from the
convex face, are pressed tightly together by the water pressure but are separated
by compressing the body portion or nozzle in the direction of the length of the
slit so that the latter is expanded to the form of an oval aperture, the lips being
caused by the elasticity of the body portion to resume their normal closed position
immediately the compression is relaxed.
The invention is illustrated in the accompanying drawings forming part of this
Specification, in which
Figure 1 is an elevation and Figure 2 a central vertical section of the device.
Figures 3 and 4 are cross sections of the device, respectively showing the slit in
the diaphragm closed and opened.
a is the body portion of the device formed in one with the internal arched
diaphragm slitted at d. b is a metal ferrule by which the nozzle is attached to the
ΓΗ

page_text: supply pipe. The convex surface of the diaphragm is presented to the water
pressure which tends to force the lips of the slit together and close the opening.
When the water is to be drawn off, the body of the nozzle is compressed by
applying pressure laterally to the body of the device upon the flat surface f
whereby the body of the nozzle at the point where it is compressed is brought to
the form shown in Figure 4, and the lips of the slit separated, also as shown, to
give passage to the water.
The size of the opening when the slit is expanded on which the flow of water
depends may be readily controlled by applying more or less pressure to the nozzle,
the slit closing automatically directly the nozzle is released to cut off the supply,
the pressure of the water on the diaphragm then holding the lips of the slit
tightly closed and thus preventing leakage.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed; I declare that what I
claim is..
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The herein described self-closing valve-nozzle, consisting of a hollow body
portion (adapted to be secured to a pipe) made of elastic material having an
internal arched and slitted diaphragm presenting its convex surface to the pressure
of the water, substantially as described.
Dotal thin 10th d
Cantomha. 1909
F. W. H. PALM,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.