Improvements in Gas Regulating Valves for use with Steam-pressure Gauges.
Year: 1899

page_text: Date of Application, 30th Dec., 1899
Complete Specification Left, 28th Sept., 1900-Accepted, 1st Dec., 1900
PROVISIONAL SPECIFICATION.
Improvements in Gas Regulating Valves for use with Steam-pressure
Gauges.
I, FRANCIS KNOEFERL, of 39, Oseney Crescent, Kentish Town, London, N.W.
Engineer, do hereby declare the nature of this invention to be as follows:-
In combined steam-pressure & gas regulating gauges, there are two index hands
moving independently upon the same centre; the one indicating upon the dial
the pressure, & the other indicating the point at which such pressure shall be
maintained; the regulating movement being additional to, & independent of the
pressure gauge, and acting so as to control the pressure: For convenience, the
regulating apparatus is placed outside, & at the back of the gauge case, and con-
sists of a gas chamber having a boss or sleeve extending through the back of
gauge, in which, it acts as the pivot of such chamber, &, while forming the
bearing, for the spindle carrying the pressure index-hand and the valve or cut
off, itself carries the regulator index-hand: The gas chamber contains an inlet
& outlet port,
by the movement of the chamber round its axis, the port to be
acted upon by the valve or cut off, is moved nearer to, or further from, the action
of such valve, at will; and wherever both indicators arrive at the same point,
the gas supply cut off by the action of the valve. The subject of my invention,
is, an improved frictionless valve, or means of cutting off, or regulating the supply
of gas to a boiler-heater, thereby controlling the pressure generated in such boiler,
and acting in connection with a pressure gauge of any ordinary construction,
concentric or excentric. The valve is in the form of a drum or hollow cylinder
with one end open for the passage of gas, while the other is closed or solid, for
the purpose of being fitted to the spindle carrying the pressure index hand of.
a pressure gauge; a portion of the circular side or wall of this valve, to the
extent of about one half of the circumference, is cut away, also for the passage
of gas; the valve is set loosely on its spindle, and works freely in a gas chamber
placed at the back of the gauge, which chamber is so constructed as to form
a bearing for the spindle carrying the valve and the pressure index-hand, by
means of a boss or sleeve formed thereon, working in and projecting through
the back of the gauge, & forming the pivot of such chamber, and constructed
so as to carry an index-hand pointing to the same scale on the dial as the pressure
indicator: this chamber has two gas ports, acting as inlet and outlet inter-
changeably, the one at the back, or in line with the valve-spindle, and the other
at the side, or at right angles to such spindle-(or both ports may be made in
the circular side of such chamber);-The valve is so set on its spindle, that if
the chamber be revolved & set with such side port at any given point, when the
pressure shall act upon the spindle carrying the pressure indicator and the valve,
so as to cause the remaining wall of such valve as described, to reach such port,
the latter will be closed thereby; thus at whatever point on the scale upon the
dial, the indicator of the gas chamber shall be set, when the pressure indicator
reaches the same point, the gas supply will be cut off, or reduced; but as it is
requisite to keep up a certain supply of gas to the burner, the valve is made to

page_text: fit loosely in the chamber, with sufficient passage around it for such purpose, and
may be either carried by a square formed on the spindle, or by a carrier pin, &
may fit loosely thereon, thus in every way avoiding friction with the regulating
action; particularly when setting the regulator chamber.
Improvements in Gas Regulating Valves for use with Steam-pressure
Gauges.
I, FRANCIS KNOEFERL, of No. 39, Oseney Crescent, Kentish Town, London,
N.W., 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:―
It consists in a method of regulating and controlling the supply of gas to a
boiler heater, and it can be connected to any of the well known steam pressure
gauges.
In combined steam pressure and gas-regulating gauges, there are two index
hands moving independently upon the same centre; the one indicating upon the
dial the pressure, the other indicating the point at which such pressure shall
be maintained; the regulating movement being additional to and independent
of the gauge, and acting so as to control the supply of gas to the heater. For
convenience the regulating apparatus is placed outside at the back of the gauge
case, and consists of a gas chamber having a boss or sleeve extending through the
back of gauge, in which it acts as the pivot of such chamber, and while forming
the bearing for the spindle carrying the pressure indexhand and the valve, itself
carries the regulator indexhand. The gas chamber contains a gas inlet and an
outlet port and by the movement of the chamber round its axis, the port to be
acted upon by the valve is moved nearer to, or further from, the action
of such valve at will; and wherever both index-hands arrive at the same point,
the gas supply is cut off by the action of the valve.
The subject of my invention is an improved frictionless valve, which is not influ-
enced by the variable pressure of the gas supply, and is regulating said supply to
a boiler heater, thereby controlling the pressure generated in the boiler and acting
in connection with a pressure gauge of any construction, concentric or excentric.
The valve is in the form of a hollow cylinder with one end open for the passage
of gas, while the other end is solid for the purpose of being fitted to the spindle
carrying the pressure indexhand; a portion of the circular side of the valve, to the
extent of about one half of the circumference is cut away; also for the passage
of gas; the valve is set on the spindle and works freely in the gas chamber, which
chamber is so constructed as to form a bearing for the spindle, by means of a
boss or sleeve formed thereon, working in and projecting through the back of
the gauge and forming the pivot of such chamber, and also carrying the indexhand
pointing to the same scale on the dial as the pressure indexhand; the chamber has
two gas ports, acting as inlet and outlet, interchangeably, the one at the back
in line with the spindle, and the other at the side or at right angles to such
spindle; the valve is so set on its spindle, that if the chamber be revolved and
set with such sideport at any given point, when the pressure shall act upon the
spindle, so as to cause the remaining wall of the valve as described to reach
such port, the latter will be closed thereby; thus at whatever point on the scale
upon the dial, the indexhand carried by the gas chamber shall be set, when the
pressure indexband reaches the same point, the gas supply will be cut off or

page_text: reduced; but as it is requisite to keep up a certain supply of gas to the burner,
the valve is made to fit loosely in the chamber with sufficient passage around
it for such purpose; the valve is preferably carried by a square formed on the
spindle, and may fit loosely thereon, thus in every way avoiding friction with
the regulating action, particularly when setting the regulator indexhand, by
revolving the gas chamber.
This invention will be understood from the following description, reference
being had to the accompanying drawings, in which Fig. 1 is a longitudinal section,
and Fig. 2 is a sectional plan at line A, B, of Fig. 1. C is the case or chamber,
which extends through the back of gauge and carries the regulator indexhand
and also forms the bearing for the spindle I carrying the pressure indexhand;
E is the valve, which fits on the squared end of the spindle D; F is the cover,
which is screwed into the case C; G, G, are the gas ports, which act as inlet or
outlet either way; when the steam pressure acts upon and revolves the spindle D,
the valve E is carried round with it, and closes or partly closes the gas port G
in the side of chamber C; the said chamber C can be revolved and set at any
required point, at which such action shall take place.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
-
1. In gas regulating steam pressure gauges the combination of the chamber
containing a circular valve, which is acted upon by the central spindle, and gas
ports substantially as therein set forth and shewn by the accompanying drawings.
2.In apparatus for the purpose herein described the combination of various
parts as herein described.
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