IMPROVEMENTS IN. GAS METERS
Year: 1860

page_text: LETTERS PATENT to Charles Lizars, of No. 36, Rue Lafayette, in Paris.
Manufacturer of Gas Meters,, for the Invention of "IMPROVEMENTS IN.
GAS METERS."
Sealed the 2nd April 1861, and dated. the 26th December 1860..
PROVISIONAL SPECIFICATION left by the said Charles Lizars at the
Office of the Commissioners of Patents, with his Petition, on the 26th
December 1860.
I, CHARLES LIZARS, of No. 36, Rue Lafayette, in Paris, Manufacturer of Gas
Meters, do hereby declare the nature of the Invention for "IMPROVEMENTS
IN GAS. METERS," to be as follows:-
This Invention has for its object improvements in gas meters. Heretofore in
gas meters various means have been employed for supplying water continuously
to the measuring compartment, so as to maintain the water at the proper
working level; and the apparatus for this purpose has been actuated by the
meter itself, the working of the meter thus producing a continuous supply of
water to the measuring compartment; such arrangements are, however,
objectionable, as the labor is thrown on the measuring parts of the meter
which should work as freely as possible. Now, according to this Invention,
the apparatus for supplying water to the measuring compartment. is actuated
by the cock by which the gas is turned on and off; there is a rod attached by
a screw to the plug of the said cock, and the rod descends into the water.

page_text: through a tube, which at its lower end is sealed by dipping into the water in
the meter. The rod gives motion to a lever, at the end of which is a curved
rack, this gears with a pinion, so that each time the cock is opened or closed
the pinion rotates; on its axis a scoop is fixed, which rotating with the pinion,
raises water from a reservoir and pours it into the measuring compartment.
The supply apparatus may be worked by hand if preferred.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Charles Lizars in the Great Seal Patent Office on the 25th
June 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
LIZARS, of No.-36, Rue Lafayette, in Paris, Manufacturer of Gas Meters,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of December, in the year of our
Lord One thousand-eight-hundred-and-sixty, in the twenty-fourth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Charles Lizars, Her special licence that 1, the said Charles Lizars, my
executors, administrators, and assigns, or such others as I, the said Charles
time
Lizars, my executors, administrators, and assigns, should at any agree
with, and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN GAS METERS,'
upon the condition (amongst others) that I, the said Charles Lizars, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same
was to be performed, and cause the same to be filed in the Great Seal
Patent Office within six calendar months next and immediately after the date
of the said Letters Patent.
"
NOW KNOW YE, that I, the said Charles Lizars, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:-
Heretofore
This Invention has for its object improvements in gas ineters.
in gas meters various means have been employed for supplying water con-

page_text: water in this reservoir, after passing out at the bottom of the pipe k the rod j
is bent upwards and rests against the under part of the lever 1, this lever is
carried by a frame m attached to the case of the meter, it is shewn separately
in plan at Figure 3, together with its frame and some of the parts in connection
therewith. n is the scoop, it is centred at n¹ to the frame m, and, as shown
in the Drawing, the end of the lever enters under a projection n² on the
under part of the scoop n, so that when the lever is moved up by turning
the cock a', it causes the scoop to assume the position shewn by red lines in
Figure 1.
The scoop n is a pipe opened near its lower end on its right-hand side
(as shewn in Figure 1), and as it is raised it lifts a quantity of water from
the reservoir f, this water escapes at the other end of the scoop and falls into
the chamber d, the end of the scoop being bent to direct it into this chamber.
Any excess of water raised flows out of the chamber d over the notch d', and
falls back again into the reservoir. It is evident that the lever m may have
a curved rack formed at its end, and that this may be made to gear with a
pinion on the axis of the scoop n, so as to produce a similar motion should
this arrangement be preferred to that which the Drawing shews; I prefer,
however, the arrangement shewn in the Drawing.
In witness whereof, I, the said Charles Lizars, have hereunto set my
hand and seal, this Eighteenth day of June, in the year of our Lord
One thousand eight hundred and sixty-one.
Witness,
J. BASSET,
14, Bd. Montmartre.
CHAS. LIZARS. (L.S.)