IMPROVE- MENTS IN COMPENSATING WET GAS METERS
Year: 1874

page_text: LETTERS PATENT to Alfred Willmer Pocock, of Church Street, in
the City of Westminster, Engineer, for the Invention of "IMPROVE-
MENTS IN COMPENSATING WET GAS METERS."
Sealed the 12th March 1875, and dated the 15th September 1874.
PROVISIONAL SPECIFICATION left by the said Alfred Willmer Pocock
at the Office of the Commissioners of Patents, with his Petition,
on the 15th September 1874.
I, ALFRED WILLMER Pocock, of Church Street, in the City of West-
minster, Engineer, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN COMPENSATING WET GAS METERS," to be as follows:-
This Invention relates to improvements in compensating wet gas
meters, whereby the cam upon the index spindle is dispensed with for
actuating the dip spoon, undue friction avoided in the rotation of the
index spindle, and a greater certainty of action of the whole mechanism
obtained than in compensating. wet gas meters at present in use.
According to my Invention I crank the index spindle just above the
worm wheel, and I work the dip spoon through the intermediation of a

page_text: rod or bar, the outer end of which is gimballed to a link of the dip
spoon lever to enable the crank motion and the to-and-fro motion to
be had without imparting a jerk or jump at any part of its movement.
In place of the crank an excentric or disc can be fitted upon the
index spindle to actuate the rod.
In the case of using a disc I propose to place it horizontally upon the
spindle, and to form a cam surface upon its periphery, in which case
the rod would rest upon the disc and take a to-and-fro movement from
the edge face of it.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
.
filed by the said Alfred Willmer Pocock in the Great Seal Patent
Office on the 15th March 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALFRED
WILLMER Pocock, of Church Street, in the City of Westminster,
Engineer, send grecting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifteenth day of September, in the year
of our Lord One thousand eight hundred and seventy-four, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Alfred Willmer Pocock, Her special
licence that I, the said Alfred Willmer Pocock, my executors, admini-
strators, and assigns, or such others as I, the said Alfred Willmer
Pocock, my executors, administrators, and assigns, should at any time
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 COMPENSATING WET GAS METERS," upon the condition
(amongst others) that I, the said Alfred Willmer Pocock, 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
Scal Patent Office within six calendar months next and immediately
after the date of tho said Letters Patent.

page_text: NOW KNOW YE, that I, the said Alfred Willmer Pocock, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say :—
This Invention relates to improvements in compensating wet gas
meters, whereby the cam upon the index spindle is dispersed with
for actuating the dip spoon, undue friction avoided in the rotation
of the index spindle, and a greater certainty of action of the whole
mechanism obtained than in compensating wet gas meters at present
in use.
According to my Invention, which will be clearly understood by
reference to the accompanying Sheet of Drawings, Figures 1 and 2,
I crank the index spindle a just above the worm wheel b, and I work
the dip spoon c through the intermediation of a rod or bar d, the outer
ende of which is gimballed to a tail piece f of the dip spoon lever or
arm g, to enable the crank motion and the to-and-fro motion to be had
without imparting a jerk or jump at any part of its movement.
The apparatus constituting my Invention is shown in the position it
occupies in a drum or casing h, and with the worm i on the drum axle j,
in gear with the the worm wheel b; k, is the float, whose stem carries the
valve for shutting off the passage of gas from the main supply nozzle 1,
when the water from any cause gets below the proper level, which level
is indicated by the dotted line m. The dip spoon c works in a chamber n,
and at each rotation of the drum and of the index spindle a through
the worm gearing a quantity of water is lifted from the chamber or
reservoir ", which runs down to the joint end and flows into the
chamber, and also into the body of the meter, both being in communi-
cation to maintain the water level.
The casing cannot be overcharged, because any water supplied to the
casing by the spoon, beyond what may be required to maintain the
proper level, flows over the screen q back into the chamber n, the
mechanism chamber » being in direct communication with the interior
of the casing by the connection holes in the usual manner.
In place of the crank herein-before mentioned, an excentric or cam
disco can be fitted horizontally upon the index spindle a, as in Figure 3,
to actuate the dip spoon through its rod d, which would take a to-and-fro
movement from the edge face of it.

page_text: And having now described the nature of my said Invention, and in
what manner the same the same is to be performed, I declare that I
claim,―
The improvements in compensating wet gas meters as set forth and
substantially as shown.
Secondly. Cranking or otherwise arranging the index spindles of
wet gas meters, and actuating the dip spoon therefrom through the
intermediation of gimballed or universal joint, link, and connection, as
set forth and shown, whereby, while the drum is travelling, a com-
pensating action or supply of liquid is effected automatically (as
described) to the casing.
In witness whereof, I, the said Alfred Willmer Pocock, have here-
unto set my hand and seal, this Fifteenth day of March, One
thousand eight hundred and seventy-five.
ALF. WILLMER POCOCK. (L.S.)