Improvements in Water Gauges.
Year: 1889

page_text: Date of Application, 7th Dec., 1889-Accepted, 11th Jan., 1890
COMPLETE SPECIFICATION.
Improvements in Water Gauges.
I, FERDINAND HEinrich Theodor THOMSEN, of Bremerhaven (Lloydstrasse No. 22)
in the Empire of Germany, 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 :-
The object of this invention is a new or improved valve device for water gauges
with automatic closing.
Referring to the accompanying drawing,
Fig. 1 is a front view,
Figs. 2, 4 and 5 are vertical sections,
Fig. 3 is a horizontal section and
Fig. 6 represents details of the improved device.
The essential feature of the invention is the application of a ball valve provided in
the conic bore of the connecting muffles between a water gauge and a boiler and a
device for allowing of an instantaneous closing of the valve by hand.
The muffle A, adapted to be connected with the steam generator, and the muffle B,
serving to receive the glass of a water gauge, the axes of which muffles cross each
other, communicate through a horizontal cylinder C, within which a valve piston v is
actuated by means of a crank k.
The valve piston v, Fig. 6, is provided with a recess e for receiving the crank and
with cuts a serving to allow free movement to the flanges of the crank.
The front face of the valve piston v is provided with a soft metal packing placed in
a circular recess and, when pressed against the valve rim r establishing the closing.
That extremity of the crank shaft k, which projects through the stuffing box t, is fitted
with a handle g lying in the same plane with the crank.
.
The ball o contained in the muffle A is prevented from falling out by a pin s and
enters into the conic bore b when a difference of pressure is produced by rupture of
the glass or otherwise, thereby effecting an instantaneous closing. The bore b is of
such width as to allow part of the ball to extend into the hollow space of cylinder ().
On the valve piston being moved from right to left past the bore b by turning the
handle g and thereby the crank k, the ball is compelled to recede. The ball closing is
thereby suspended, but immediately afterwards the metal packing m is pressed against
the valve edger and cuts off the steam or water as the case may be, thus allowing the
glass to be replaced.
On blowing through, the handle g is placed in a vertical position, thereby causing
the valve piston v to assume its middle position, the ball o being consequently prevented
from closing the bore b. The little cocks h serves as passages for the tools used in
knocking off the incrustation.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed I declare that what I
claim is:
In water gauges closing automatically when a difference of pressure occurs,
1) The application of a ball valve, the conic bore 6 of which is so determined
as to allow the closing ball o to extend so far through the opening as to cause a
piston moved past said opening to displace the ball, thereby suspending the
closing, substantially as set forth.
2) The application, in the cylinder C connecting the muffles A and B, of a valve
piston having cuts a and recesses e for receiving the crank k, which actuates,

page_text: when turning the handle g, the valve piston, the metal packing of which presses
against the valve rim and forms a reliable closing owing to the steam pressure
produced on the piston, substantially as set forth.
Dated this 7th day of December 1889.
F. THOMSEN.
.Per Huelser & Co.,
Attorneys.