An Improved Valve for the Delivery of Hot and Cold Water.
Year: 1899

page_text: Date of Application, 10th Nov., 1899-Accepted, 13th Jan., 1800
CUMIDMTE SPECIFICATION.
An Improved Valve for the Delivery of Hot and Cold Water.
We, WILHELM ENGELKE, Manufacturor, and FRANZ MEYER, Engineer, both
of 25, 1, Vorsetzen, 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:-
.
"
The object of this invention is a valve, operated by means of a lever handle,
whereby cold as well as hot water can be drawn off from the corresponding cold.
water and steam pipes.
By way of example a mode of carrying out the object of the invention is
shown on the drawing annexed.
Fig. 1 is a longitudinal section of the valve when in the closed position.
Fig. 2 is a section of part of the same valve as it appears when cold water is
boing drawn off.
Fig. 3 is a section of part of the same valve as it appears when the hot water
is being drawn off.
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An
Fig. 4 is a cross-section of the valve arrangement as shown in the drawing.
There is in the cast-body or casing a of the valve a passage for the water, a
passage c for the steam and a mixing and outflow chamber d between these
passages. From the cold water passage ba large opening leads to the mixing
chamber d into which also projects a cylinder / which concentrically surrounds
the opening e. The cylinder is provided with bearings y which serve on the
one hand, to guide the valve body h, and on the other hand, to give the direction
to the water entering by the opening e. The directing of the water is rendered still
more efficacious by a cylindrical extension i at the lower side of the valve. The valve
is provided with an upward tubular extension? which passes through the stuffing
box and is provided with a head having an external square screw thread.
clastic washer is suitably fixed to the valve and held removably in place by
the nut on the lower end of the extension. This washer, which can be
easily replaced when worn, not only serves to make a tight closure but prevents
undue play. Through the valve-body / pusses a spindle m which is movable in
a perpendicular direction and whose head has the operating lever handle n
provided with a square cut inner thread fixed to it by means of the pin o. The
lower end of the spindle m has a conical valve p movably secured to it said valve
fitting into a small hole 7 filleted off at its upper end for the reception of the
valve. This valve controls the entrance of steam to the mixing chamber d.
Round the opening 9 is a cylindrical raised part which serves in conjunction
with the corresponding downward extension i of the valve h to direct the steain
entering from the passage c.
The modus operandi is as follows:-
The full force of the water which enters by the pipe b bears upon the face
of the valve h which face possesses a large surface whilst the spindle m and the
lever n fixed to it and whose inner thread works on the outer thread of the exten-
sion holds the valve in the closed position against the pressure.
If the crank handle n is turned from left to right the movement of the head
of the handle upon the screwed upper end of the extension serves, in con-

page_text: junction with the pressure of the water, to force the valvo open and this open-
ing movement, if the handle is still turned, will continue until the upper
end of the oxtension comes against the stuffing box (see Fig. 2). When
this takes place the cold water can run freely through from the passage & to
the chamber d and its outlet.
If it is desired to obtain hot water the handle n is turned still further round
with the result that the extension being unable to move down further the
head part of the handle must screw up upon the extension with the result that
the spindle m and valve are raised (see Fig. 3) so as to admit steam through
the holo 9. from the passage c into the chamber d where it mixes with the cold
water coming from the passage b. The steam unites intimately with the water
and is condensed so that heated water now flows out from the valvo. The
entrance of the steam to the chamber d, owing to the latter's peculiar construc-
tion, does not, even if it is under a high pressure, force back the cold water but
condenses and mixes with it.
With this valve cold water can be drawn off first, then moderately warm
water, and, in a short time thereafter, hot water; but steam is never allowed
to pass out.
The cranked handle can have an indicator and be moved over a scale ou
which the indications "cold," "tepid," "hot," are placed corresponding to the
elevation of the scrowed thread of the handle.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we consider novel and desire to claim is :—
A valve for the delivery of hot and cold water characterized by a casing (a)
having a cold water passage, a steam passage, a mixing and outlet chamber
provided with a large inlet opening (e) surrounded by a concentric conduit-
cylinder (), a small steam inlet (2) likewise surrounded by a concentric cylinder,
a valve (h) (provided with a cylindrical extension (i)) for opening and closing
the cold water inlet (e) and a spindle (m) provided with a valve (p) for opening
and closing the steam inlet (7) said valves being operated by the manipulation
of a handle (n) connected to the spindle (m) and working on a screwed extension
of the valve (h), substantially as hereinbefore described with reference to draw-
ings annexed.
Dated this Ath day of November 1890