IMPROVEMENTS IN WET GAS METERS
Year: 1878

page_text: . LETTERS PATENT to Daniel Orme, of the Firm of George Orme and Company,
.
of Oldham, in the County of Lancaster, Gas Meter Manufacturers, for the
Invention of "IMPROVEMENTS IN WET GAS METERS."
PROVISIONAL SPECIFICATION left by the said Daniel Orme at the Office of
; the Commissioners of Patents on the 28th October 1878.
DANIEL ORME, of the Firm of George Orme and Company, of Oldham, in the
County of Lancaster, Gas Meter Manufacturers. "IMPROVEMENTS IN WET GAS
METERS."
My Invention relates to wet gas meters, and has for its object to secure a correct
registration of gas under varying pressures and rates of consumption. To attain
this end I use an ordinary float and valve at the inlet end or side of the meter, and
I place at the back of the meter a compensating float of a semi-cylindrical or hemi-
spherical form, which float will descend into the water as the latter evaporates, and
by so doing will maintain the water in the case at an uniform level, or nearly so..
I so construct the meter as that the inlet pressure of gas will be on the water both
in the front and in the back part of the meter. The gas passes from the inlet valve
into the body of the meter and into the measuring drum by the openings at the
back, and after being measured is conducted by a bent pipe extending from the
space within the cover of the drum to the outlet of. the meter.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Daniel Orme in the Great Seal Patent Office on the 26th April
1879.
DANIEL ORME, of the Firm of George Orme and Company, of Oldham, in the
County of Lancaster, Gas Meter Manufacturers. "IMPROVEMENTS IN WET GAS
METERS."
My Invention relates to wet gas meters, and has for its object to secure a correct
registration of gas under varying pressures and rates of consumption. To attain

page_text: this end I use an ordinary float and valve at the inlet end or side of the meter, and
Tplace at the front or back-of-the meter a compensating float of a semi-cylindrical
or hemispherical form, which float will descend into the water-as-the-latter
evaporates, and by so doing will maintain the water in the case at an uniform
-level, or nearly so. I so construct the meter as that the inlet pressure of gas will
be on the water both in the front and in the back part of the meter. The gas passes
-from the inlet valve into the body of the meter and into the measuring drum by
the openings at the back, and after being measured is. conducted by a bent pipe
extending from the space within the cover of the drum to the outlet of the meter.
And in order that my said Invention may be fully understood
have appended
hereunto a Sheet of Drawings marked with letters of reference, to which Drawings
I will now refer. Fig. 1 represents a front view of the meter with the front end
and waste-water box cover removed; and Fig. 2 represents a vertical section of the
meter. In the said Figs. A is the measuring drum; B is the compensating float;
and C is the float which closes the inlet when the water level falls below the fixed
minimum level. The gas is admitted through an inlet valve at d into the space
above the water. This space is open from front to back of the case so that there is
an equal pressure upon the water surface at all parts. The drum A has the reverse
action, that is to say, the gas flows through inlet openings at the back of the drum
at e and passes into a front chamber at f. A bent pipe g communicates by its lower
end with the interior of a waste-water box h, and by its upper end with the
chamber f. The gas taken in by the measuring drum flows through the pipe g into
the box , whence it flows through a pipe i to the delivery branch . The water
level is maintained by an overflow pipe which communicates by its lower end with
a compartment m of the waste-water box. The water flows below the bottom of a
partition n into a second compartment o, whence it passes over a partition p into
the compartment h, whence the surplus, if any, may be withdrawn through an
opening which is closed by means of a screw cap or plug .
Having now fully set forth and indicated the nature of my said Invention and
the manner in which I carry the same into practical effect, I would have it to be
understood in conclusion that I do not claim the parts marked A, B, and C
separately, but that I claim the combination of parts forming a complete meter,
substantially as set forth and indicated herein-before and in and by the accom-
panying Drawings.
In witness whereof, I, the said Daniel Orme, have hereunto set my hand and
+
seal, this Twenty-fifth day of April, in the year of our Lord One thousand
eight hundred and seventy-nine.
Signed and sealed by the
said Daniel Orme in
the
presence of
EDWARD K. DUTTON,
Agent to the Patentee,
St. Ann's Churchyard,
Manchester,
DANIEL ORME. (L.S.)