Improvements in Prepayment Wet Gas Meters.
Year: 1889

page_text: Date of Application, 21st Nov., 1889-Accepted, 28th Dec., 1889
COMPLETE SPECIFICATION.
Improvements in Prepayment Wet Gas Meters.
I, WILLIAM ANDREW MCINTOSH VALON of the Gas Works, Ramsgate, in the
County of Kent, Civil 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 :-
This invention has reference to impovements upon an invention for which Letters
Patent No. 10,598 dated July 1, 1889 were granted to me, and has the same object in
view, namely to so construct wet gas meters that immediately after a certain desired
quantity of gas has passed through the meter, the index, and consequently the meter
will stop, and the supply of gas to the fittings beyond will be cut off.
In order that the invention may be easily understood drawings are attached hereto,
Fig. 1 being a front elevation of the index with the case removed; and a part of the
meter with the front plate taken away. Fig. 2 is a side elevation of the same.
Fig. 3. is a plan of the index with a part of the train of wheels omitted in order to
allow of the levers and other parts being exhibited more distinctly, and Fig. 4 shows
an alternative arrangement in connection with the shaft, and as shown in Fig. 4 of
the drawings attached to my specification accompanying an application for Letters
Patent No. 14312 and dated Sep. 11, 1889. In each of the Figures relating to this
present specification similar letters refer to the same parts.
In Fig. 1 A is the drum shaft with its worm B which gears into the worm wheel ()
and drives the upright spindle D, with its worm E near the upper end. The worm E
gives motion to a wheel F and this through another wheel and pinion drives the shaft
or spindle G. This spindle which carries the registering pointer H has a projecting
pin I. A sleeve or short hollow spindle carries at its outer end the adjustable pointer J
and at its inner end a wheel to which a disc K is fixed, and this hollow spindle slides
over or encircles the spindle G. The disc K has a notch, shown in deep black in the
drawing, into which the pin I may enter when the shaft G has revolved sufficiently to
bring it opposite the notch. Up to this point the invention is very similar to that
described in my specification No. 10,598-89, but instead of there being a stop put
upon the upright spindle D I now apply the following contrivance, which has the
effect of stopping the drum more directly. At the back of the index plate LI fix a
forked boss or stud M, and to it 1 pivot a lever N, the pivot being marked O.
the end P of the lever N the end of the shaft G presses, and the opposite end of the
same lever is pivotted to an arm R. This arm is again pivotted to a crank S fixed
to an upright spindle T which descends within a sealed tube e into the front part of
the meter and rests in a step U. At the lower part of the spindle T there is a
projecting pin V fixed to it, and on the drum shaft in front of the worm there is
fastened a cam or piece of metal W. At the back between the index plate L and
the lever N there is attached a spring X its other extremity bearing against the lever
at the point Y.
At
The adjustable pointer is moved into any desired position much in the same way as
described in my previous specifications, by applying a key to the upper squared
end a of a shaft 6 carrying a worm c that engages with the teeth of the wheel fixed to
the sleeve or short hollow spindle, and to which the disc K is also fastened.
The action is as follows. Assuming that the pin I is in the notch, the key is applied
to the shaft at a and turned until the adjustable pointer is in the desired position. In
doing this the pin I will be drawn out of the notch and the end of the shaft G will
be thrust backwards against the lever N, the effect of which will be through the
medium of the arm R and crank S to place the pin V in the position shown in Fig. 1
so that the drum is free to revolve. When the meter has passed so much gas as will
bring the registering pointer H into a position coincident with the adjustable

page_text: pointer J, the pin I will be pressed by the spring X, through the intervention of the
lever N, acting upon the shaft G, into the notch in the disc K, and at the same time
the opposite end of the lever will operate upon the arm R and crank S so as to bring
the pin V at right angles to the situation it previously occupied, and intercept the
rotation of the cam W, and consequently the drum, when the meter will stop. When
the index is to be re-adjusted the operation of applying the key as before described is
to be repeated.
In Fig. 4 a modification of the previous arrangement is shown. In it the pin I will
be seen to be fixed to the disc, and a clutch d having in it a notch, is attached to the
shaft G. In action the result upon the shaft G is the same in both cases.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what 1
claim is,
1. The construction of wet gas meters with indices each having a boss or stud M,
a lever N, and spring X as herein described and shown on the drawings.
2. The construction of wet gas meters with an arm R, crank S, spindle T, pin V,
and cam or attachment W to the drum shaft, as herein described and shown on the
drawings, and
3. The combination of the arrangement shown in Fig. 4 with a wet gas meter index
.as herein described and shown on the drawings.
Dated this 21st day of November 1889.
W. H. BENNETT,
Agent for the Applicant.