An Improvement connected with Gas Pressure Recorders.
Year: 1897

page_text: An Improvement connected with Gas Pressure Recorders.
We, RICHARD THOMAS GLOVER and JOHN GEORGE GLOVER, of The Firm Thomas
Glover and Company, Limited, 214, to 222, St. John Street, Clerkenwell, London,
Gas Meter Manufacturers, and WILLIAM STAGG, of The Bristol Gas Company,
Canons Marsh, Bristol, Engineer, do hereby declare the nature of this invention
to be as follows:-
In apparatus hitherto constructed for registering and recording the pressure of
gas in gas works and other places a difficulty has existed in obtaining a true
register in consequence of the variation of the level of the water due to evaporation
and other causes and through the recording drum or other device being fixed
whereby the float carrying the marking instrument when the water lowers, records
a false register by reason of the marking instrument shifting its position with
regard to the markings on the recording drum to which it was set, thus necessi-
tating a calculation being made to obtain the proper register.
Now the object of this invention is to overconie this inconvenience and ensure a
true register at whatever height the water or other liquid is in the container and
for this purpose we connect the recording drum to a float or floats and so arrange
same in connection with the revolving and timing mechanism that it is able to
move up and down and at the same time revolve to be always in register with
the marking instrument, the floats of both the recording drum and the marking
instrument moving together when the water shifts its level in the container.
The float or floats may be fitted to the recording drum in any desired manner,
and may revolve with same should such be desired.
In the action of the apparatus the gas enters a bell carried by the marking
instrument float or floats, and according to the pressure so the marking instrument
is moved up and down the recording drum to record the pressure on same the
recording drum float remaining stationary.
An Improvement connected with Gas Fressure notor
We, RICHARD THOMAS GLOVER, and JOHN GEORGE GLOVER of The Firm Thomas
Glover and Company, Limited, 214, to 222, St. John Street, Clerkenwell, London,
Price 8d 1

page_text: Gas Meter Manufacturers, and WILLIAM STAGG, of The Bristol Gas Company,
Canons Marsh, Bristol, 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:-
In apparatus hitherto constructed for registering and recording the pressure of
gas in gas works and other places, a difficulty has existed in obtaining a true
register in consequence of the variation of the level of the water due to evaporation
and other causes and through the recording drum or other device being fixed,
whereby the float carrying the marking instrument when the water lowers, records
a false register by reason of the marking instrument shifting its position with
regard to the markings on the recording drum to which it was set, thus necessi-
tating a calculation being made to obtain the proper register.
Now the object of this invention, is to overcome this inconvenience and ensure a
true register at whatever height the water or other liquid is in the container, and
for this purpose we connect the recording druni to a float or floats and so arrange
same in connection with the revolving and timing mechanism that it is able to
move up and down, and at the same time, revolve, to be always in register with
the marking instrument, the floats of both the recording drum and the marking
instrument moving together when the water shifts its level in the container.
The float or floats may be fitted to the recording drum in any desired manner
and may revolve with same should such be desired.
In the action of the apparatus the gas enters a bell carried by the marking
instrument float or floats, and according to the pressure so the marking instrument
is moved up and down the recording drum to record the pressure on same, the
recording drum float remaining stationary.
Our invention will be clearly understood on reference to the annexed drawings.
Figure 1 face view partly in section. Figure 2 side elevation partly in section.
Figure 3 plan. Figure 4 plan of the lower portion or the apparatus through the
line (Figure 1).
A, casing. B, dome top thereto. C, half round pedestal with pillars D), D, for
supporting clock E. F, main float with open bottom dipping in water but has
a central drum G to ensure the requisite buoyancy of same. H, gas supply pipe
carried up within the float F above the water line for raising float 1 by gas
pressure.
I, pencil or scoring crayon on rod J projecting from above the float F and
passing through the dome B which serves as a guide for up and down motion of
the pencil I as the pressure of gas varies. K, band float surrounding the main
float F but free therefrom to rise and fall independently of the float F. The band
float K surmounted by rods L, L, passing through the dome B for guiding pur-
poses, are connected by cross bar M on which is a stepped pivot carrying a vertical
rod N with paper wrapped drum P, the upper end of said rod N being free to rise and
fall in a slot of the bar Q, the upper end of which carries a bevel wheel R operable
by the clock to rotate it and the paper wrapped drum P, the paper being ruled or
marked with hour divisions and horizontal minute lines as the recorder of variations
of gas pressure and a time recorder as the variations occur.
The paper wrapping is preferably renewable every 24 hours and dated for future
reference, or it may be at such other periods of time found necessary.
The band float has depending rods S, S, and ring T in connection with a
skeleton frame U with rollers V, V, bearing against guide bars W,W, on the
inside of the casing to steady the lower part of the band float K. X is a glass
gauge showing the height of water in the casing and which can be renewed
from time to time by a supply. poured through the aperture at Y.
In practice, the water being at a given height, the marking instrument is set
to, say, zero, on the drum, on gas pressure being admitted, the marking instrument
is raised accordingly, and as the drum is revolved, the markings become irregular
and thus show variations of pressure and the times by the rulings of the paper

page_text: in relation to the working of the clock, the markings being positive and permanent
for record purposes.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed we declare that what
we claim is:-
'
1. The improvements connected with gas pressure recorders as herein described
and as shown, the improvements consisting of two floats F, L, in a water vessel A,
each float having independent action, one dependent on gas pressure for recording
the variations thereof by marking on record sheet on rotatable drum P, and the
other for variations of water level and the consequent rise or fall of the drum P
on which the markings are effected in the manner and for the purposes set
forth.
2. The combination of gas float and a water float or buoyant bodies in the same
vessel, one float carrying the marking instrument, and the other the recording
drum by which gas pressure and the variations of same are duly registered and
recorded irrespective of the height of water in the vessel, as set forth.
The 19th day of July 1890.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Richard Thomas Glover,
John George Glover, and William Stagg.