IMPROVEMENTS IN METERS FOR MEASURING LIQUIDS
Year: 1877

page_text: LETTERS PATENT to Gerard Wenzeslaus von Nawrocki, of the Firm of J.
Brandt and G. W. v. Nawrocki, of Berlin, Germany, Patent Agents, for the
Invention of "IMPROVEMENTS IN METERS FOR MEASURING LIQUIDS." A com-
munication from Louis Brièse, of Charlottenburg, near Berlin, Germany.
PROVISIONAL SPECIFICATION left by the said Gerard Wenzeslaus von
Nawrocki at the Office of the Commissioners of Patents on the 10th November
1877.
GERARD WENZESLAUS VON NAWROCKI, of the Firm of J. Brandt and G. W. v.
Nawrocki, of Berlin, Germany, Patent Agents. "IMPROVEMENTS IN METERS FOR
MEASURING LIQUIDS." (A communication from Louis Brièse, of Charlottenburg,
near Berlin, Germany.)
The object of this Invention is to construct apparatus for measuring off fluids in
definite quantities instead of using ordinary standard measures, thus saving much
time and space, and affording greater cleanliness.
This Invention is based upon the fact that no liquid flows out of a syphon, or
that the flow will be interrupted when air is introduced at the bend of the syphon,
and is as follows:-A cylinder is provided capable of holding any suitable undefined
quantity of liquid; it is fitted with gauge glass and scale. A pipe leads from the
bottom of the cylinder to a two-way cock on a measuring vessel placed below the
cylinder, and gauged to contain a certain measure; a pipe leads from the tramway cock
into the measuring vessel from below, rising to a syphon bend, the bottom aperture
of which is close to the bottom of the measuring vessel. At the knee or bend of
the syphon a fine bent air pipe is inserted, so that it can be turned and set from
without by means of a lever; this pipe has a saucer-shaped washer, which can turn
Prine fd71

page_text: against a washer with a ground surface on the syphon bend. A socket spanner fits
on a square on the air pipe, and passes out through a stuffing box in the wall of
the measuring vessel, being fitted with a spiral spring for ensuring a gentle pressure
of the spanner against the air pipe. The lever is by a joint connected to the spanner,
and serves to regulate the desired quantity of liquid.
There is also an air inlet and outlet pipe at the highest part of the measuring
vessel; it is outside of the latter, provided with an enlarged glass cylinder containing
a light ball, say of cork or hollow metal, so as to float on the liquid; it passes along
the supply cylinder containing the liquid, and is open at the top.
The action of this apparatus is as follows:-The two-way cock being closed, the
liquid flows from the supply cylinder through the cock, and the syphon pipe filling
the measuring vessel rising into the fine air pipe, floating the ball float therein, and
causing it to close and prevent further egress of the liquid. If now the cock is
opened, the communication between the supply vessel and the measuring vessel is
interrupted; then the whole contents of the latter would run out by way of the
syphon. By adjustment of the lever, and consequently of the small air pipe, the
quantity of liquid escaping can be regulated, as according to the elevation of the
air pipe over the bottom of the measuring vessel the syphon draws air sooner or
later, and the flow is interrupted.
There is a scale with slots for resting the lever in, according to the quantity
desired to be measured. This scale may be of metal, and is fastened to the stand,
enclosing the measuring vessel. By closing the cock the latter fills automatically.
A plumb bob, suspended from the side of the supply vessel, serves to place the
apparatus in level.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Gerard Wenzeslaus von Nawrocki in the Great Seal Patent Office
on the 10th May 1878.
GERARD WENZESLAUS VON NAWROCKI, of the Firm of J. Brandt and G. W. v.
Nawrocki, of Berlin, Germany, Patent Agents. "IMPROVEMENTS IN METERS FOR
MEASURING LIQUIDS." (A communication from Louis Brièse, of Charlottenburg,
near Berlin, Germany.)
The object of this Invention is to construct apparatus for measuring off fluids in
definite quantities instead of using ordinary standard measures, thus saving much
time and space, and affording greater cleanliness.
Figure 1 of the accompanying Drawings is a front view partly in section of
apparatus constructed according to this Invention.
Figure 2, a longitudinal section; Figure 3, a plan section on
Figure 1.
line A, B,
Figure 4, front elevation of bottom, box, or stand; and Figures 5, 6, 7, and 8,
detail views.
This Invention is based upon the fact that no liquid flows out of a syphon, or
that the flow will be interrupted when air is introduced at the bend of the syphon,
and is as follows: -A cylinder A is provided capable of holding any suitable
undefined quantity of liquid; it is fitted with gauge glass a and scale F; a pipe b
leads from the bottom of the cylinder to a two-way cock c on a measuring vessel B
placed below the cylinder, and gauged to contain a certain measure; a pipe i leads
from the two-way cock into the measuring vessel from below, rising to a syphon
bend, the bottom aperture of which is closed to the bottom of the measuring vessel B.
At the knee or bend of the syphon i a fine bent air pipe m is inserted, so that it
can be turned and set from without by means of a lever k.
Figures 6 and 7 shew the mode of attaching this pipe m; it has a saucer-shaped
washer n, which can turn against a washer n¹ with a ground surface on the syphon
bend. A socket spanner o fits on a square o' on the air pipe m, and passes out
through a stuffing box D in the wall of the measuring vessel B, being fitted with a
spiral spring p for ensuring a gentle pressure of the spanner against the air pipe i.
The lever is by a joint p' connected to the spanner o, and serves to regulate the
desired quantity of liquid.
There is also an air inlet and outlet pipe q at the highest part of the measuring
vessel B; it is outside the latter provided with an enlarged glass cylinder r con-
taining a light ball, say, of cork or hollow metal, so as to float in the liquid; it
passes along the supply cylinder containing the liquid, and is open at the top.
The action of this apparatus is as follows:-The two-way cock c being closed,
the liquid flows from the supply cylinder through the pipe b and cock c, shewn at
Figure 8, and the syphon pipe filling the measuring vessel, rising into the fine air
pipe m, floating the ball float in the part r of same, and causing it to close and
prevent further egress of the liquid. The measuring vessel is now filled with the
exact quantity of liquid required. If now the cock c is opened, the communication
between the supply vessel A and the measuring vessel B is interrupted; then the
whole contents of the latter would run out by way of the syphon i. By adjustment
of the lever K, and consequently of the small air pipe m, the quantity of liquid escaping
can be regulated, as according to the elevation of the air pipe m over the bottom
of the measuring vessel B the syphon i draws air sooner or later, and the flow is
interrupted.
There is a scale F with slots for resting the lever K in, according to the quantity
desired to be measured. This scale may be of metal, and is fastened to the stand
H, enclosing the measuring vessel B. By closing the cock c the latter fills
automatically.
A plumb bob L, suspended from the side of the supply vessel, serves to place the
apparatus in level.

page_text: And having thus described the nature of this Invention, and one mode of
carrying the same into effect, I declare that I claim as the Invention communicated
to me,-
Firstly. The mode herein described of introducing air into the bend of a syphon i
by means of an adjustable pipe m arranged therewith, for the purpose of
interrupting the outflow at will.
Secondly. Connecting a supply vessel A with a measuring vessel B by means of
a pipe b and a two-way cock c.
Thirdly. The application of a small air pipe q with ball float w, and,―
Fourthly. The combination of the parts claimed in the preceding claims.
In witness whereof, I, the said Gerard Wenzeslaus von Nawrocki, have
hereunto set my hand and seal, this Seventh day of May, in the year of
our Lord One thousand eight hundred and seventy-eight.
1412
ROCKT