Year: 1887

page_text: Date of Application, 8th Dec., 1887
Complete Specification Left. 8th Sept., 1889
Complete Specification Accepted, 26th Oct., 1888
I, GEORGE HARRY NASH, of Tower Street, Birmingham, in the County of Warwick,
Stamper and Piercer, do hereby declare the nature of this invention to be as
follows
My invention relates to an improved gauge for ascertaining the depth or quantity of
liquid contained in tanks, casks or other vessels such depth or quantity being indicated
upon a graduated dial by means of a hand or pointer.
My improved gauge comprises a spiral or twisted rod which is adapted to be
rotated by means of a nut or its equivalent sliding longitudinally thereon and which
is prevented from rotating. This nut is operated by a suitable float to which it is
advantageously attached and which is guided by a tube forming a kind of case for the
instrument. An index, finger or pointer is in some cases attached directly to the head
of the spiral rod and adapted to move over a dial secured to the adjacent end of the
said tube. Or the dial and hand may be detached from the tube, and the motion of
the said rod be communicated to the said hand by any suitable means.
My improved gauge may be permanently fixed or it may be made portable, for
instance it may be perunanently applied to lamp reservoirs for preventing the over-
filling of the same and for indicating when they are empty, or to tanks for indicating
the quantity of water contained therein. When in a portable form the instrument
may be used for gauging the contents of barrels or casks, it being, preferably, in this
case, provided with several graduated scales corresponding to the different sizes of
casks which it is designed to ascertain the contents.
The Qih da. of Daawnboy 1987
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.

page_text: I, GEORGE HARRY NASH, of Tower Street, Birmingham, in the County of Warwick,
Stamper and Piercer, 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 :-
My invention relates to an improved gauge for ascertaining the depth or quantity
of liquid contained in tanks, casks, or other vessels, such depth or quantity being
indicated upon a graduated dial by means of a hand or pointer.
My improved gauge preferably comprises a spiral or twisted rod which is adapted
to be rotated by means of a nut or its equivalent sliding longitudinally thereon. This
nut is operated by a suitable float to which it is advantageously attached and which
is guided by a tube forming a kind of case for the instrument. An index, finger, or
pointer is, in some cases, attached directly to the head of the spiral rod and adapted
to move over a dial secured to the adjacent end of the said tube. Or the dial and hand
may be detached from the tube and the motion of the said rod be communicated to
the said hand by any suitable means.
In order that my invention may be clearly understood, I will describe how the same
can be advantageously carried into practice by reference to the accompanying drawing,
in which
Figure 1 is a front elevation of a gauge constructed according to my invention,
and
Figure 2 is a plan of the same.
Figure 3 is a longitudinal vertical section of the instrument in a position at right
angles to that shown in figure 1, and
Figure 4 is a section on the line a, a, figure 3.
a is the tube or case of the gauge and bis a spiral or twisted rod which is supported
in bearings in the end plates c, d inserted in the said tube.
e is a float located within the said tube and adapted to slide longitudinally therein
and is a nut having a thread corresponding to that of the spiral rod and attached to
the said float. The said nut is provided with a projection, or a pin g is inserted into
the float which projection or pin enters a slot in the case, so that the nut will be
prevented from turning as it is raised by the float.
i is a dial which is attached to the upper end of the tube a and which may be
graduated for depth or quantity as desired; and j is an index, finger, or pointer
which is secured to the upper end of the spiral rod and designed to move over the
dial.
k is a cap which can be secured upon the dial end of the tube a to protect the dial
and hand.
The operation of my improved gauge is as follows, that is to say, suppose the gauge
to be fixed in a vessel such as, for instance, the reservoir of a lamp. If now a liquid
is introduced into the said vessel the float will rise as the depth of the liquid increases;

page_text: as, however, the float or the nut thereon is in engagement with the spiral rod and
cannot turn thereon owing to the pin g which slides in the slot h, the said rod is itself
caused to turn and thus impart motion to the hand. The amount of this movement
is indicated upon the dial which is graduated according to the length of the spiral
rod and the twist thereof.
It is obvious that my improved gauge may be readily applied for indicating the
depth of water in tanks or other similar vessels, and that instead of being fixed as
herein before described, it may be made portable. In the latter case it can be very
advantageously used for ascertaining the quantity of liquid in barrels or other vessels
in which a given depth of liquid corresponds to a known quantity thereof.
In this case in order to adapt the instrument for gauging the contents of barrels of
several different sizes, I mark the dial with several concentric rings of graduations
each of which rings of graduations corresponds to the quantity of liquid contained by
barrels of one size.
Although I have described the index finger as being directly applied to the twisted
rod it is to be understood that the said finger may be arranged upon a separate shaft
to which motion is communicated from the twisted rod in any suitable manner: also
that the float may be adapted to work in spiral grooves in the case of the instrument,
in which arrangement the float on rising would turn, and turn with it the rod carrying
the hand.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The improved liquid gauge constructed as described with reference to the accom-
panying drawing, and operating as, setforth.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.