A New or Improved Water-level Indicator.
Year: 1892

page_text: Date of Application, 14th Apr., 1892
Complete Specification Left, 16th Jan., 1893-Accepted, 14th Apr., 1893
PROVISIONAL SPECIFICATION.
A New or Improved Water-level Indicator.
1 GEORG EBERHARDT, of Erzsébet Körut 15, Budapest, Austro-Hungary,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to a new or improved water level indicator for steam
boilers, reservoirs and the like, and has for its object to check the level indicated
by glass water gauges.
My improved water level indicator consists of a float fixed at one end to a hori-
zontal connecting rod, the other end of which turns according to the fluctuations in
the height of the water a spindle arranged in the steam boiler, these fluctuations
in the position of the float or in the turns of the spindle being recorded by
means of levers or tooth gearing to a recording mechanism, the dial of which
is suitably divided so that the level of the water may be readily read thereon.
The spindle is provided at the end which extends in the boiler, with a collar
placed in the joint or fitting, so that the tightening may be automatically effected
as the pressure of the steam increases.
The advantages that my improved water level indicator has over the water
gauges hitherto used is that it is unbreakable, that it operates with the utmost
possible precision, and the fact of being easily able to connect the lever mechanism
or toothed gearing with a suitable bell or gong which may be operated by electricity
and give warning to the person in charge.
There is moreover provided with my improved water level indicator a con-
trivance whereby the freedom of motion of the float can be accurately tested.
This contrivance consists of a crank lever mounted underneath the connecting rod
and properly tightened in the boiler like the spindle aforesaid.
When the mobility of the float is required to be tested, it is sufficient to turn
the crank lever once in order to move the float with its connecting rod, when this
mobility will become apparent.
Dated this 14th day of April 1892.
HUGHES, SON & Co.,
38, Chancery Lane, London, Agents.
COMPLETE SPECIFICATION.
A New or Improved Water-level Indicator.
I, GEORG EBERHARDT, Engineer, of Erzsébet-körut No. 2, Budapest, in the
Kingdom of Hungary, 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 has for its object, to construct a water level indicator, which may
be applied to any boiler, which records (or may be adapted to record) the lowest
and the highest water level occurring within a given time, which can be easily
checked as regards its regular working, and is more sensitive than many of the
water level indicators hitherto known.
In the accompanying drawings:
Fig. 1 is a horizontal section of a water level indicator embodying my invention.
Fig. 2 is an elevation of the same.
The improved indicator chiefly comprises a float a mounted on an axle 6 and
adapted to operate an indicator hand or dial train.
In addition to the usual indicator hand c; it contains also a maximum and a
[Price 8d.1

page_text: minimum hand d, d, which are propelled by the ordinary pointer into their end
positions and remain there, until carried back by the attendant, so as to permanently
record the highest and the lowest water. level.
With this apparatus is combined a testing lever e, adapted to set in motion the
float and the indicator hand, in order to test, whether they are in proper working
condition, or whether the apparatus operates correctly.
To prevent leakage along the main axle f, the latter has a conical shoulder g,
and to reduce friction, the bearing for the outer extremity of the axle is formed by
the conical end or point of an adjustable screw.
These two devices serve to
increase the sensitiveness of the apparatus.
The arm or lever connecting the float with the main axle has a joint, and the
outer half of the said lever may be fixed to the other at the required angle by
means of a slotted arc ; and a set screw i. In this manner the virtual length of
the lever or the distance from the axis to the float may be regulated according to
the height of the water which it is desired to maintain.
This faculty of regulation facilitates the application of the same water level
indicator to a variety of boilers or water reservoirs by varying the ratio between
the motion of the float and that of the indicator hand.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is :-
:-
In water indicators having a float which controls an indicator hand or moveable
index;
1. A testing levere adapted to test the correct working of the apparatus;
2. An axle provided with a conical shoulder g and a counter screw or end
bearing h, for increasing the sensitiveness of the apparatus ;
The whole substantially as described and illustrated.
Dated this 14th day of January 1893.
FAIRFAX & WETTER,
433, Strand, London, Agents.